Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and a pentapolymer of vinylidene fluoride (VDF), hexafluoropropylene (HFP), tetrafluoroethylene (TFE), perfluorinated methyl vinyl ether (PMVE) and ethylene (PE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.
An apparatus and method for internal corrosion prevention is used for carbon capture utilization and storage injection well tubing. The method is directed to control flow in an injection well tubing and preventing internal corrosion of the injection well tubing. The method comprises steps of injecting CO2 stream into a hydrocarbon bearing reservoir from an injection well; and using a flap valve at a bottom end of an injection well tubing that operates by responding to elevated injection pressures; and automatically closing upon injection cessation, effectively preventing a flow-back of formulation fluids into the injection well tubing.
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
E21B 41/02 - Lutte contre la corrosion sur place dans les trous de forage ou dans les puits
3.
TOE FLAP VALVE FOR INTERNAL CORROSION PREVENTION IN CCUS INJECTION WELL TUBING
An apparatus for internal corrosion prevention is used for carbon capture utilization and storage injection well tubing. The apparatus may comprise a flap valve at a bottom end of the injection well tubing that operates by responding to elevated injection pressures and automatically closes upon injection cessation, effectively preventing a flow-back of formulation fluids into the injection well tubing.
B65G 5/00 - Emmagasinage des fluides dans des excavations ou cavités naturelles ou artificielles souterraines
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
4.
Hydraulic control apparatus and method for a downhole tool
The present invention is a hydraulic control apparatus that activates and deactivates a downhole tool, such as a reamer, at a desired downhole location in a borehole. The apparatus includes a piston, a housing, a coil spring, and a guide pin. The piston has a cam portion with a continuous slotted groove. There is a slide member and a force member within the slotted groove so that the piston moves longitudinally and rotationally within the housing according to the guide pin within the slotted groove. At the desired downhole location, drilling fluid pressure passes a pressure threshold to move a front outlet of the piston to an opened position past an end of the housing, while rotating the piston according to the slide member and force member in the slotted groove. The apparatus alternately extends and retracts the reamer by opening and closing the front outlet by hydraulic control.
E21B 23/00 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage
E21B 10/32 - Trépans avec une partie pilote, c.-à-d. trépans comportant un organe coupant piloteTrépans pour élargir le trou de forage, p. ex. alésoirs à organes coupants expansibles
5.
COMPOSITION AND METHOD FOR IMPROVING THE PRODUCTION OF PETROLEUM HYDROCARBONS
A novel surfactant composition that comprises of two surfactant components, a solvent, and water. The surfactant composition is added to a fracturing fluid, which is then pumped downhole into a subterranean formation where the novel characteristics of the fracturing fluid lend to improved oil production over the fracturing fluid without the surfactant composition.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
C09K 8/66 - Compositions à base d'eau ou de solvants polaires
E21B 37/06 - Procédés ou appareils pour nettoyer les trous de forage ou les puits utilisant des moyens chimiques pour empêcher ou limiter le dépôt de paraffine ou de substances analogues
E21B 41/02 - Lutte contre la corrosion sur place dans les trous de forage ou dans les puits
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
6.
TREATMENT OF SUBTERRANEAN FORMATIONS WITH CROSSLINKED FLUIDS
Disclosed herein is a crosslinked HPG fluid system using a very low concentration of HPG polymer. The fluid system is able to be used at low HPG concentrations while maintaining stable viscosity for over two hours at elevated temperatures.
A dissolvable aluminum alloy can be used for components of a downhole tool. The dissolvable aluminum alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes from about 0.01 wt % to about 1.5 wt % gallium; from about 0.01 wt % to about 1.5 wt % indium; from about 0.01 wt % to about 1.5 wt % bismuth; and the balance of substantial aluminum so as to be dissolvable in KCl at about 2.1% by weight and about 93° C. with a dissolving rate in a range of from about 10 to about 100 mg/cm2/hr, yield strength in a range of from about 25 to about 45 ksi, ultimate tensile strength in a range of from about 35 to about 60 ksi, and elongation in a range of from about 4 to about 15% at room temperature.
C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
8.
HIGH TEMPERATURE DISSOLVABLE ALUMINUM FOR OIL AND GAS APPLICATIONS
A dissolvable aluminum alloy can be used for components of a downhole tool. The dissolvable aluminum alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes from about 0.01 wt % to about 1.5 wt % gallium; from about 0.01 wt % to about 1.5 wt % indium; from about 0.01 wt % to about 1.5 wt % bismuth; and the balance of substantial aluminum so as to be dissolvable in KCI at about 2.1% by weight and about 93 gC with a dissolving rate in a range of from about 10 to about 100 mg/cm2/hr, yield strength in a range of from about 25 to about 45 ksi, ultimate tensile strength in a range of from about 35 to about 60 ksi, and elongation in a range of from about 4 to about 15% at room temperature.
C22F 1/04 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid de l'aluminium ou de ses alliages
9.
LOW CONCENTRATION SYNTHETIC POLYMER FRACTURING FLUID WITH ASCORBIC ACID
A fracturing fluid for fracturing subterranean formations comprising ascorbic acid. The fracturing fluid can use ascorbic acid to delay increases in viscosity until desired. The viscosity increase can then be maintained over a period of time to perform fracturing operations.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/70 - Compositions pour la formation de crevasses ou de fractures caractérisées par leur forme ou par la forme de leurs composants, p. ex. mousses
C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond body. The diamond body comprises a first volume of diamond having a plurality of toughening agents dispersed in the diamond matrix constituted with diamond grains. The toughening agents have sizes ranging from about 100 nanometers to about 500 micrometers. The toughening agents have volume ratio of in the diamond body ranging from about 0.5% to about 40%. The toughening agents are at least one of tungsten, tantalum, molybdenum, niobium, iron, chromium, zirconium, titanium, platinum, iridium, hafnium, osmium, ruthenium, rhodium, vanadium, alloys, carbides/nitrides, metal oxides or ceramics containing thereof.
B24D 3/02 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond body. The diamond body comprises a first volume of diamond having a plurality of toughening agents dispersed in the diamond matrix constituted with diamond grains. The toughening agents have sizes ranging from about 100 nanometers to about 500 micrometers. The toughening agents have volume ratio of in the diamond body ranging from about 0.5% to about 40%. The toughening agents are at least one of tungsten, tantalum, molybdenum, niobium, iron, chromium, zirconium, titanium, platinum, iridium, hafnium, osmium, ruthenium, rhodium, vanadium, alloys, carbides/nitrides, metal oxides or ceramics containing thereof.
B24D 3/06 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques
B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond body and a metallic substrate. The diamond body comprises a first phase comprising a binderless intercrystalline diamond- to-diamond bonded matrix extending throughout the diamond body; and a second phase comprising a binder/catalyst within interstitial regions of intercrystalline bonded diamond matrix. The first phase is substantially free of the binder/catalyst material. The metallic substrate is in direct contact with the diamond body. The diamond body includes a first region comprising the catalyst/binder material and a second region is substantially free of the binder/catalyst. The second region may be positioned along a wear surface of the supcrabrasivc compact.
B24D 3/10 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques à structure poreuse ou alvéolaire, p. ex. pour utiliser avec des diamants en tant qu'abrasifs
B24D 3/06 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques
A low-end rheology modifier for adjusting rheological characteristics of water-based drilling fluid systems, particularly for high salt, high density drilling fluids in high temperature and high-pressure applications. The low end rheology modifier comprises a copolymer and laponite clay, the copolymer comprising tert-Butylacrylamidosulfonic acid (TBAS) and n-vinylpyrrolidone (NVP) crosslinked with N,N′-Methylenebis(acrylamide).
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond body and a metallic substrate. The diamond body comprises a first phase comprising a binderless intercrystalline diamond-to-diamond bonded matrix extending throughout the diamond body; and a second phase comprising a binder/catalyst within interstitial regions of intercrystalline bonded diamond matrix. The first phase is substantially free of the binder/catalyst material. The metallic substrate is in direct contact with the diamond body. The diamond body includes a first region comprising the catalyst/binder material and a second region is substantially free of the binder/catalyst. The second region may be positioned along a wear surface of the superabrasive compact.
B24D 3/10 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques à structure poreuse ou alvéolaire, p. ex. pour utiliser avec des diamants en tant qu'abrasifs
15.
HIGH RESILIENCE, LOW COMPRESSION SET, ABRASION RESISTANT HYDROGENATED NITRILE BUTADIENE RUBBER (HNBR) COMPOUND FOR HIGH TEMPERATURE HIGH PRESSURE O&G APPLICATIONS
The Patent Application discloses a hydrogenated nitrile rubber. The hydrogenated nitrile rubber may comprise 100 parts by weight of hydrogenated nitrile rubber having a bound acrylonitrile content of 17% or more, a Mooney viscosity ML1+4 (100° C.) of from about 20 to about 100 and no less than 140 parts by weight in sum total as a filler comprising carbon black.
A HIGH RESILIENCE, LOW COMPRESSION SET, ABRASION RESISTANT HYDROGENATED NITRILE BUTADIENE RUBBER (HNBR) COMPOUND FOR HIGH TEMPERATURE HIGH PRESSURE O&G APPLICATIONS
The patent application discloses a hydrogenated nitrile rubber. The hydrogenated nitrile rubber may comprise (100) parts by weight of hydrogenated nitrile rubber having a bound acrylonitrile content of 17% or more, a Mooney viscosity ML1 +4 (100° C.) of from about 20 to about 100 and no less than 140 parts by weight in sum total as a filler comprising carbon black.
The apparatus for anchoring a downhole tool to a casing includes a spiral threaded engagement and a raised spiral threaded engagement between a slip device and first and second cones. The first cone is moved closer to the second cone within the slip device to expand the slip device from an initial diameter in a run-in configuration to an extended diameter in a set configuration. The initial diameter corresponds to the spiral threaded engagement, and the extended diameter corresponds to the raised spiral threaded engagement. The spiral threaded engagement of the first cone is in the opposite spiral direction to the spiral threaded engagement of the second cone. There are multiple locking systems incorporated to prevent premature expansion and reverse rotating the cones from the slip device. The invention includes both the method of assembling the apparatus and the method of using the apparatus to anchor to a casing.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
E21B 47/09 - Localisation ou détermination de la position d'objets dans les trous de forage ou dans les puitsIdentification des parties libres ou bloquées des tubes
18.
EXPANDABLE SPIRAL THREADED APPARATUS AND METHOD FOR ANCHORING A DOWNHOLE TOOL TO A CASING, AND METHOD FOR ASSEMBLING THE APPARATUS
The apparatus (10) for anchoring a downhole tool to a casing includes a spiral threaded engagement and a raised spiral threaded engagement between a slip device (40) and first and second cones (20, 30). The first cone (20) is moved closer to the second cone (30) within the slip device (40) to expand the slip device (40) from an initial diameter in a run-in configuration to an extended diameter in a set configuration. The initial diameter corresponds to the spiral threaded engagement, and the extended diameter corresponds to the raised spiral threaded engagement. The spiral threaded engagement of the first cone (20) is in the opposite spiral direction to the spiral threaded engagement of the second cone (30). There are multiple locking systems (60, 54, 70, 80) incorporated to prevent premature expansion and reverse rotating the cones from the slip device. The invention includes both the method of assembling the apparatus and the method of using the apparatus to anchor to a casing.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 33/126 - PackersBouchons à cuvette ou jupe élastiques actionnées par pression d'un fluide
E21B 17/042 - AccouplementsJoints entre tige et trépan, ou entre tiges filetés
E21B 34/10 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par un fluide de commande provenant de l'extérieur du trou de forage
19.
MOLDED ARTICLES OF MODIFIED POLYGLYCOLIC ACID FOR DEGRADABLE DOWNHOLE TOOLS APPLICATION
The patent application discloses a degradable downhole tool member for hydrocarbon resource recovery. The downhole tool member comprises a shaped body comprising a degradable polymer matrix, wherein the downhole tool member, when held in downhole fluid at about 80°C., has an initial mass loss about about 14% for a holding period of about 2 days in a pressure holding test.
C08B 7/00 - Préparation d'esters cellulosiques d'acides organiques et inorganiques
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
E21B 33/10 - Étanchement ou bouchage des trous de forage ou des puits dans le trou de forage
The patent application discloses a method for nondestructively determining information of an element disposed within a polymer body comprising a cure system extending continuously throughout. The method comprises the steps of directing x-rays onto a surface of the body, wherein the x-rays are directed through the body, and wherein target atoms in the cure system of the polymer body emit x-ray fluorescence; and receiving the x-ray fluorescence and determining composition information of the cure system within the body.
G01N 23/223 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en mesurant l'émission secondaire de matériaux en irradiant l'échantillon avec des rayons X ou des rayons gamma et en mesurant la fluorescence X
21.
Molded articles of modified polyglycolic acid for degradable downhole tools application
The patent application discloses a degradable downhole tool member for hydrocarbon resource recovery. The downhole tool member comprises a shaped body comprising a degradable polymer matrix, wherein the downhole tool member, when held in downhole fluid at about 80° C., has an initial mass loss about 14% for a holding period of about 2 days in a pressure holding test.
The patent application discloses a method for nondestructively determining information of an element disposed within a polymer body comprising a cure system extending continuously throughout. The method comprises the steps of directing x-rays onto a surface of the body, wherein the x-rays are directed through the body, and wherein target atoms in the cure system of the polymer body emit x-ray fluorescence; and receiving the x-ray fluorescence and determining composition information of the cure system within the body.
G01N 23/02 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau
G01N 23/06 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et mesurant l'absorption
G01N 23/083 - Recherche ou analyse des matériaux par l'utilisation de rayonnement [ondes ou particules], p. ex. rayons X ou neutrons, non couvertes par les groupes , ou en transmettant la radiation à travers le matériau et mesurant l'absorption le rayonnement consistant en rayons X
23.
DEGRADABLE POLYMER COMPOSITION AND METHODS OF MANUFACTURING AND USING IN DOWNHOLE TOOLS
A chemical composition for a degradable polymeric material includes an isocyanate terminated polyester, polycarbonate, or polyether prepolymer, including prepolymer units as a main chain with a plurality of isocyanates at ends of the main chain, a catalyst additive, and a cross-linking agent. The composition degrades at a rate and at a delay depending on temperature. The composition is a dissolvable rubber material with a modulus and elongation suitable for a component of a downhole tool.
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
A hardened slip and a method of making the hardened slip are disclosed. A method of hard surfacing a slip component for a downhole tool is disclosed. The slip component may have a bearing surface and may be composed of a base material, the base material being metallic. The method may comprise steps of positioning at least the bearing surface of the slip component with a direct contact with a boron source; bonding an external layer at least on the bearing surface to form a metallurgical bond between boron from the boron source with the base material by boriding the base material; and maintaining a bulk temperature of the slip component below a melting point of the base material.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
KEMBL PETROLEUM TECHNOLOGY DEVELOPMENT CO. LTD (Chine)
Inventeur(s)
Dunne, Timothy Ryan
Zhao, Lei
Ren, Jiaxiang (jason)
Cheng, Peng
Abrégé
A hardened slip and a method of making the hardened slip are disclosed. A method of hard surfacing a slip component for a downhole tool is disclosed. The slip component may have a bearing surface and may be composed of a base material, the base material being metallic. The method may comprise steps of positioning at least the bearing surface of the slip component with a direct contact with a boron source; bonding an external layer at least on the bearing surface to form a metallurgical bond between boron from the boron source with the base material by boriding the base material; and maintaining a bulk temperature of the slip component below a melting point of the base material.
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
C22C 19/05 - Alliages à base de nickel ou de cobalt, seuls ou ensemble à base de nickel avec du chrome
C22C 30/00 - Alliages contenant moins de 50% en poids de chaque constituant
C23C 8/70 - Boruration de la couche superficielle de matériaux ferreux
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
26.
METHODS OF DELAYING THE DISSOLUTION RATE OF DISSOLVABLE RUBBERS
The patent application discloses an apparatus. The apparatus comprises a dissolvable polymeric substrate formed into a downhole tool; and a polymeric coating adhered to at least a portion of the polymeric substrate. The polymeric coating comprises a polymer having the formula:
The patent application discloses an apparatus. The apparatus comprises a dissolvable polymeric substrate formed into a downhole tool; and a polymeric coating adhered to at least a portion of the polymeric substrate. The polymeric coating comprises a polymer having the formula:
—[R(R1x)(R2y)]n—,
wherein R is aryl, or —C(R3p) (R4q)-aryl-C(R5r)(R6s), and n is an integer ranging from 10 to 50,000.
C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
27.
METHODS OF DELAYING THE DISSOLUTION RATE OF DISSOLVABLE RUBBERS
The patent application discloses an apparatus. The apparatus comprises a dissolvable polymeric substrate formed into a downhole tool; and a polymeric coating adhered to at least a portion of the polymeric substrate. The polymeric coating comprises a polymer having the formula: — [R(R1xx)(R2ynn—, wherein R is aryl, or — C(R3pp) (R4qq)-aryl-C(R5rr)(R6ss), and n is an integer ranging from 10 to 50,000.
C08J 7/043 - Amélioration de l'adhésivité des revêtements en soi, p. ex. par formation d'apprêts
C09D 165/00 - Compositions de revêtement à base de composés macromoléculaires obtenus par des réactions créant une liaison carbone-carbone dans la chaîne principaleCompositions de revêtement à base de dérivés de tels polymères
28.
FRAC PLUG DEVICE FOR HIGH EXPANSION AT THE SETTING POSITION
The frac plug device (10) is a wedge type or ramp type frac plug that can seal at a setting position in a large diameter portion of the borehole. The thickness, taper angle, and dimensions of components for passing through the narrowest portion of the borehole during deployment no longer limit the radial expansion. The frac plug device (10) includes a core cone (20), a segmented cone (30), a slip device (50), a segmented cap member (70), and a core cap member (90). A simplified setting action sets the high expansion of the slip device (10) by the core cone (20) and the segmented cone (30). The segmented cone (30) and the segmented cap member (70) increase expansion of the slip device (10), and the segmented cap member (70) and the core cap member (90) lock the slip device (10) around the core cone in the final expansion configuration at the maximum radial expansion for large diameter portions of the borehole.
E21B 33/14 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues pour la cimentation des tubes dans les trous de forage ou de sondage
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
29.
GALVANICALLY-ACTIVE IN SITU FORMED PARTICLES FOR CONTROLLED RATE DISSOLVING MAGNESIUM ALLOY
A dissolvable magnesium alloy can be used for components of a downhole tool. The dissolvable magnesium alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes nickel at 0.04-0.4% by weight and the balance of magnesium. The alloy is dissolvable in KCl at 2.1% by weight and 95° C. with a dissolving rate in a range of 10-100 mg/cm2/hr, yield strength in a range of 18-37 ksi, ultimate tensile strength in a range of 29-47 ksi, and elongation in a range of 8-40%.
The Patent Application discloses an in-situ swellable composition suitable for use in subterranean wells. The swellable composition may comprise a composite material. The composite material swells on contact with water due to chemical reaction of the composite material.
C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
E21B 23/02 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour verrouiller les outils ou autres éléments sur des supports ou dans des retraits entre sections adjacentes du tubage
E21B 33/124 - Unités à bouchons espacés longitudinalement pour isoler les espaces intermédiaires
31.
HTHP CORROSION RESISTANT COMPOSITE SEAL VIA RECRYSTALLIZATION OF REACTIVE COMPOSITE: FORMULATION AND DEPLOYMENT
The patent application discloses an in-situ swellable composition suitable for use in subterranean wells. The swellable composition may comprise a composite material. The composite material swells on contact with water due to chemical reaction of the composite material.
The drilling system (10) withstands downhole conditions at the bottom of the borehole and drilling conditions due to the constant movement and vibration. The drilling system (10) includes a drill bit (20) and a sensor system (40) with a system housing (30), a primary power supply (50) and interior sensor (70). The primary power supply (50) includes piezoelectric panels (52) for converting radial vibration into energy. The interior sensor (70) is locally powered by the primary power supply (50) at the remote downhole location at the bottom of the borehole. The interior sensor (70) collects data related to a downhole condition and is in communication with the primary power supply (50) to generate confirmed data based on the amount of energy generated by the primary power supply (50). The confirmed data is more accurate and reliable than the data collected by the interior sensor (70) and can be used to guide the path of the drill bit (20) through the rock formation in drilling operations.
The patent application discloses a plug useable for isolating sections of a wellbore. The in-situ dissolvable plug comprises a cylindrical body having a backup piece at least at one end of the cylindrical body, a tube and a cylindrical body. The tube may extend through the cylindrical body and backup piece. The cylindrical body may be made of dissolvable material comprising an external surface, and an inner bore surface formed around the tube. The cylindrical body is soft, moldable, and expandable vertical to the tube to form an in-situ plug at downhole.
E21B 33/13 - Procédés ou dispositifs de cimentation, de bouchage des trous, des fissures ou analogues
C09K 8/42 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits
C09K 8/44 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits contenant uniquement des liants organiques
34.
Sensor system with an interior sensor and a piezoelectric power supply
The drilling system withstands downhole conditions at the bottom of the borehole and drilling conditions due to the constant movement and vibration. The drilling system includes a drill bit and a sensor system with a system housing, a primary power supply and interior sensor. The primary power supply includes piezoelectric panels for converting radial vibration into energy. The interior sensor is locally powered by the primary power supply at the remote downhole location at the bottom of the borehole. The interior sensor collects data related to a downhole condition and is in communication with the primary power supply to generate confirmed data based on the amount of energy generated by the primary power supply. The confirmed data is more accurate and reliable than the data collected by the interior sensor and can be used to guide the path of the drill bit through the rock formation in drilling operations.
E21B 47/103 - Localisation des fuites, intrusions ou mouvements du fluide utilisant des mesures thermiques
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
E21B 47/013 - Dispositifs spécialement adaptés pour supporter des instruments de mesure sur des trépans de forage
H02N 2/18 - Machines électriques en général utilisant l'effet piézo-électrique, l'électrostriction ou la magnétostriction fournissant une sortie électrique à partir d'une entrée mécanique, p. ex. générateurs
35.
Frac plug device for high expansion at the setting position
The frac plug device is a wedge type or ramp type frac plug that can seal at a setting position in a large diameter portion of the borehole. The thickness, taper angle, and dimensions of components for passing through the narrowest portion of the borehole during deployment no longer limit the radial expansion. The frac plug device includes a core cone, a segmented cone, a slip device, a segmented cap member, and a core cap member. A simplified setting action sets the high expansion of the slip device by the core cone and the segmented cone. The segmented cone and the segmented cap member increase expansion of the slip device, and the segmented cap member and the core cap member lock the slip device around the core cone in the final expansion configuration at the maximum radial expansion for large diameter portions of the borehole.
An impregnated diamond cutter and a method of making the impregnated diamond cutter are disclosed. An impregnated diamond cutter may comprise a superabrasive volume. The superabrasive volume may have a plurality of diamond particles and a metal binder. The metal binder may comprise CoCuFeP.
B24D 3/10 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques à structure poreuse ou alvéolaire, p. ex. pour utiliser avec des diamants en tant qu'abrasifs
B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with catalytic materials from the substrate.
A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
A water-soluble polymer system for suspending proppant in a fracturing fluid is disclosed herein. The polymer system can be made with acrylamide, acrylic acid, a surfactant monomer, urea, a glycol ether, sodium hydroxide, and water and when mixed in a fracturing fluid with a proppant can form three-dimensional structures by hydrophobic association. The structures can also reduce frictional energy losses in the fracturing fluid system and can increase oil recovery after fracturing occurs.
C09K 8/12 - Compositions ne contenant pas d'argile contenant des composés organiques synthétiques macromoléculaires ou leurs précurseurs
C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
A fracturing fluid for fracturing subterranean formations comprising a proppant, water, a gelling agent, a stabilizer, a cross linking agent, and a pH adjuster. The stabilizer can be an ascorbic acid. The fracturing fluid can use ascorbic acid to delay increases in viscosity until desired by delaying cross-linking of the gelling agent with the cross-linking agent. The viscosity increase can then be maintained over a period of time to perform fracturing operations.
A fracturing fluid for fracturing subterranean formations comprising ascorbic acid. The fracturing fluid can use ascorbic acid to delay increases in viscosity until desired. The viscosity increase can then be maintained over a period of time to perform fracturing operations.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/70 - Compositions pour la formation de crevasses ou de fractures caractérisées par leur forme ou par la forme de leurs composants, p. ex. mousses
C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
This disclosure describes the composition and methods of use for a novel delayed polymer gelation system for high temperature and high salinity applications. This polymer gelation system includes a polymer of acrylamide, AMPS and 500-5000 ppm polyethylene glycol diacrylate in inverse emulsion form, and a polyethyleneimine (PEI) with a MW of 2,000-30,000 daltons as the crosslinking agent.
C07C 303/02 - Préparation d'esters ou d'amides d'acides sulfuriquesPréparation d'acides sulfoniques ou de leurs esters, halogénures, anhydrides ou amides d'acides sulfoniques ou de leurs halogénures
Some reservoirs have tight oil formations, such as the Changqing reservoir. The surfactant polymer flooding and low-tension gas flooding are two potential chemical flooding methods for use in tight oil formations. In these methods, an oil displacement agent, or surfactant, is added. Derivatives of nonionic surfactants with extended chains (by propylene oxide and ethylene oxide) from di-alkyl alcohols were developed and tested. A synergistic blend of surfactants was developed between the di-alkyl chain surfactants and a commercially available anionic surfactants that lowers interfacial tension and improves surfactant solubility in high salinity water and oil.
C11D 1/825 - Mélanges dont tous les composés sont non ioniques
C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
The multi-directional force modulation cartridge system (10) has a modular relationship the drill bit so that the cutting profile of a cutter (20) in the drill bit can be adjusted without requiring modification of the drill bit itself. The force modulation cartridge system (10) includes a cutter (20) and a cartridge (30). The cutter (20) can be independently replaced due to wear or replaced when the cartridge (30) is replaced. The cartridge (30) includes a holder (40), a seat (60), and a cartridge force member (80). The cartridge (30) can have different holders (40, 140, 240) and seats (60, 160, 260) adjusted for different formations and drilling conditions. The alignment of the holder and the seat is set by a holder sliding angle and a seat sliding angle with the holder sliding surface and the seat sliding surface being parallel and in sliding engagement. A seat post (68) supports the cartridge force member (80) to exert a restoring force according to the holder sliding angle and the seat sliding angle.
E21B 10/573 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines caractérisés par les détails du support, p. ex. la structure du substrat ou l'interface entre le substrat et l'élément de coupe
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
The multi-directional force modulation cartridge system has a modular relationship the drill bit so that the cutting profile of a cutter in the drill bit can be adjusted without requiring modification of the drill bit itself. The force modulation cartridge system includes a cutter and a cartridge. The cutter can be independently replaced due to wear or replaced when the cartridge is replaced. The cartridge includes a holder, a seat, and a cartridge force member. The cartridge can have different holders and seats adjusted for different formations and drilling conditions. The alignment of the holder and the seat is set by a holder sliding angle and a seat sliding angle with the holder sliding surface and the seat sliding surface being parallel and in sliding engagement. A seat post supports the cartridge force member to exert a restoring force according to the holder sliding angle and the seat sliding angle.
B23P 15/32 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe de forets
46.
Frac plug device with an anchor mandrel assembly for a locked set configuration
A ramp type frac plug device of the present invention is a simplified, short and compact frac plug device to both maintain seal to the borehole wall and prevent premature release from the borehole. The frac plug device includes a cone, an anchor assembly, a cap member, a slip device, and a sealing member. In a set configuration, the frac plug device has both the friction fit engagement of the cone and the slip device and a single direction rachet locked engagement of an anchor ring with a threaded ring portion and an anchor mandrel with an exterior threaded mandrel portion of the anchor assembly. The ratchet lock engagement between the anchor ring and the anchor mandrel prevents backward movement of the cone away from the anchor mandrel so that the cap member engaged with the anchor mandrel locks the slip device in position on the cone.
Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and a pentapolymer of vinylidene fluoride (VDF), hexafluoropropylene (HFP), tetrafluoroethylene (TFE), perfluorinated methyl vinyl ether (PMVE) and ethylene (PE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.
A ramp type frac plug device (10) of the present invention is a simplified, short and compact frac plug device to both maintain seal to the borehole wall and prevent premature release from the borehole. The frac plug device (10) includes a cone (20), an anchor assembly (30), a cap member (60), a slip device (70), and a sealing member (90). In a set configuration, the frac plug device (10) has both the friction fit engagement of the cone (20) and the slip device (70) and a single direction rachet locked engagement of an anchor ring (92) with a threaded ring portion (94) and an anchor mandrel (32) with an exterior threaded mandrel portion (38) of the anchor assembly (30). The ratchet lock engagement between the anchor ring (92) and the anchor mandrel (32) prevents backward movement of the cone (20) away from the anchor mandrel (32) so that the cap member (60) engaged with the anchor mandrel (32) locks the slip device (70) in position on the cone (20).
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
49.
FRAC PLUG DEVICE WITH AN ANCHOR MANDREL FOR A LOCKED SET CONFIGURATION
A ramp type frac plug device of the present invention is a simplified, short and compact frac plug device to both maintain seal to the borehole wall and prevent premature release from the borehole. The frac plug device includes a cone, an anchor mandrel, a cap member, a slip device, and a sealing member. In a set configuration, the frac plug device has both the friction fit engagement of the cone and the slip device and a single direction rachet locked engagement of the cone and an anchor mandrel. The cone has a threaded cone portion, and the anchor mandrel has an exterior threaded mandrel portion. The ratchet lock engagement between the cone and the anchor mandrel prevents backward movement of the cone away from the anchor mandrel so that the cap member engaged with the anchor mandrel locks the slip device in position on the cone.
A ramp type frac plug device (10) of the present invention is a simplified, short and compact frac plug device to both maintain seal to the borehole wall and prevent premature release from the borehole. The frac plug device (10) includes a cone (20), an anchor mandrel (32), a cap member (60), a slip device (70), and a sealing member (90). In a set configuration, the frac plug device has both the friction fit engagement of the cone and the slip device and a single direction rachet locked engagement of the cone and an anchor mandrel. The cone (20) has a threaded cone portion (30), and the anchor mandrel (32) has an exterior threaded mandrel portion (38). The ratchet lock engagement between the cone and the anchor mandrel prevents backward movement of the cone away from the anchor mandrel so that the cap member engaged with the anchor mandrel locks the slip device in position on the cone.
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 23/01 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour ancrer les outils ou similaires
51.
Packer system with load bypass to prevent premature expansion
The packer system includes a packer mandrel, an upper support or gage ring, a seal member, an upper slip device, an upper cone, a lower cone, a lower slip device, a setting sleeve, and a setting piston. The seal member has a run-in position and a set position. The set position seals against a borehole at a location in a borehole. The setting sleeve has a bypass position to transfer load of the setting piston away from the lower slip device and to the lower cone, the seal member, and the upper cone to set the seal member and upper slip device before the lower slip device. The setting sleeve has a released position to separate from the setting piston so that the load of the setting piston can finally be applied on the lower slip device for expansion of the lower slip device at the proper time and location.
A water-soluble polymer system for suspending proppant in a fracturing fluid is disclosed herein. The polymer system can be made with acrylamide, acrylic acid, a surfactant monomer, urea, a glycol ether, sodium hydroxide, and water and when mixed in a fracturing fluid with a proppant can form three-dimensional structures by hydrophobic association. The structures can also reduce frictional energy losses in the fracturing fluid system and can increase oil recovery after fracturing occurs.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
A water-soluble polymer system for suspending proppant in a fracturing fluid is disclosed herein. The polymer system can be made with acrylamide, acrylic acid, a surfactant monomer, urea, a glycol ether, sodium hydroxide, and water and when mixed in a fracturing fluid with a proppant can form three-dimensional structures by hydrophobic association. The structures can suspend a proppant for a period of days in comparison with traditional fracturing fluid systems with similar concentrations.
A water-soluble polymer system for suspending proppant in a fracturing fluid is disclosed herein. The polymer system can be made with acrylamide, acrylic acid, a surfactant monomer, urea, a glycol ether, sodium hydroxide, and water and when mixed in a fracturing fluid with a proppant can form three-dimensional structures by hydrophobic association. The structures can suspend a proppant for a period of days in comparison with traditional fracturing fluid systems with similar concentrations.
Nano- and micro-particles (NMP) can be formed from an oil/water emulsion. The emulsion is made by mixing a liquid solvent, at least one surfactant, a particle-forming compound, and at least curing agent. If desired, pH control agents and viscosity enhancers can be added to the liquid solvent. The particle-forming compound and the curing agents are mixed together and form the oil phase in the emulsion and after curing, the particles are formed. The nano- and micro-particles can be used as proppant to enhance the conductivity of nano- and microfractures and fluid-loss-control additive for hydraulic fracturing operations.
A hydraulic fracture fluid is provided. The fluid can include a liquid solvent, one or more surfactants, a proppant-forming compound, and one or more curing agents. The liquid reacts to form proppant in-situ under downhole conditions.
A packer system (10) includes a packer mandrel (20), an upper support or gage ring (30), a seal member (40), an upper slip device (50), an upper cone (60), a lower cone (70), a lower slip device (80), a setting sleeve (90), and a setting piston (100). The seal member (40) has a run-in position and a set position. The set position seals against a borehole at a location in a borehole. The setting sleeve (90) has a bypass position to transfer load of the setting piston (100) away from the lower slip device (80) and to the lower cone (70), the seal member (40), and the upper cone (60) to set the seal member (40) and upper slip device (50) before the lower slip device (80). The setting sleeve (90) has a released position to separate from the setting piston (100) so that the load of the setting piston (100) can finally be applied on the lower slip device for expansion of the lower slip device (80) at the proper time and location.
E21B 33/128 - PackersBouchons avec un organe dilaté radialement par pression axiale
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
The retrievable packer system (10) includes a packer mandrel (20), a lock ring (26), an upper cone (30), a lower cone (40), a slip device (60), a retrieval mandrel (70), and a slotted retrieval sleeve (80). The lock ring (26) is attached to the packer mandrel (20), followed by the upper cone (30), the slip device (60), the lower cone (40), and the retrieval mandrel (70). The upper connection sleeve (92) and the lower connection sleeve (94) cover the packer mandrel (20) so as to form a chamber in fluid connection with slip flow channels (65) of the slip device (60). The packer system (10) is run into the borehole with the slotted retrieval sleeve (80) in the first position relative to the lower cone (40) and the slip device (60) in the run-in position. The packer system (10) is set and can be locked at a location in the borehole. The slotted retrieval sleeve (80) can push the upper cone (30) to return the slip device (60) to the run-in position for retrieval of the packer system (10).
E21B 33/1295 - PackersBouchons à patins mécaniques pour accrochage dans le tubage actionnés par pression de fluide
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
59.
COMPOUND GREASE COATING FOR CONTROLLED DISSOLUTION OF A DISSOLVABLE COMPONENT OF A DOWNHOLE TOOL
A coating (10) protects a dissolvable component of a downhole tool, so that the dissolvable component can be deployed to a desired downhole location, perform under high stress for fracturing operations, and be efficiently dissolved after the fracturing operations are completed. The present invention elevates known greases for this functionality usually performed by complex factory fabricated polymer and metal coatings. The coating (10) includes an activation layer (20), a first grease layer (30), and a second grease layer (50). The first grease layer (30) and the second grease layer (50) have differential grease layer consistency ranges and thickness rages. The coating (10) includes non-uniform layers of manually applied greases onsite to control degradation of the component substrate as effectively as factory coatings pre- fabricated on the components.
B05D 7/00 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers
C09D 201/00 - Compositions de revêtement à base de composés macromoléculaires non spécifiés
E21B 34/14 - Aménagements des vannes pour les trous de forage ou pour les puits dans les puits actionnés par le mouvement des outils, p. ex. obturateurs à manchons actionnés par des pistons ou par des outils à câble
C10M 169/00 - Compositions lubrifiantes caractérisées en ce qu'elles contiennent comme constituants un mélange d'au moins deux types d'ingrédients, couverts par les groupes précédents, choisis parmi les matériaux de base, les épaississants ou les additifs, chacun de ces composés étant un composé essentiel
60.
Compound grease coating for controlled dissolution of a dissolvable component of a downhole tool
A coating protects a dissolvable component of a downhole tool, so that the dissolvable component can be deployed to a desired downhole location, perform under high stress for fracturing operations, and be efficiently dissolved after the fracturing operations are completed. The present invention elevates known greases for this functionality usually performed by complex factory fabricated polymer and metal coatings. The coating includes an activation layer, a first grease layer, and a second grease layer. The first grease layer and the second grease layer have differential grease layer consistency ranges and thickness rages. The coating includes non-uniform layers of manually applied greases onsite to control degradation of the component substrate as effectively as factory coatings pre-fabricated on the components.
C09K 8/40 - Compositions d'espacement dites "spacers", p. ex. compositions utilisées pour séparer les masses de forage et de cimentation
C10M 101/00 - Compositions lubrifiantes, caractérisées en ce que le matériau de base est une huile minérale ou une huile grasse
C10M 105/76 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé organique non macromoléculaire contenant du silicium
C10M 107/00 - Compositions lubrifiantes caractérisées en ce que le matériau de base est un composé macromoléculaire
Nano- and micro-particles (NMP) can be formed from an oil/water emulsion. The emulsion is made by mixing a liquid solvent, at least one surfactant, a particle-forming compound, and at least curing agent. If desired, pH control agents and viscosity enhancers can be added to the liquid solvent. The particle-forming compound and the curing agents are mixed together and form the oil phase in the emulsion and after curing, the particles are formed. The nano- and micro-particles can be used as proppant to enhance the conductivity of nano- and microfractures and fluid-loss-control additive for hydraulic fracturing operations.
A drill bit for cutting formation comprises a bit body, a plurality of cutters, and a plurality of blades with pockets to accommodate the cutters, respectively. Each of the plurality of cutters has a substrate, an ultra-hard layer, an inclined surface on the top of the ultra-hard layer, wherein the inclined surface slants downward from a cutting edge to a trailing edge. The cutter can improve cutting efficiency and service life.
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
E21B 10/43 - Trépans rotatifs du type racleur comportant des dents, des lames ou des organes de coupe similaires, p. ex. du type à fourche, en queue de poisson caractérisés par la disposition des dents ou des autres éléments coupants
63.
Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids
A method to determine the velocity of static proppant settling in fracturing fluids. The proppant carrying capability of different friction reducer products can be compared, so the appropriate friction reducer product can be selected for hydraulic fracturing operations. The effect of friction reducer concentrations in the fracturing fluids, the salinity and hardness of the fracturing fluids, and the proppant size on the velocity of static proppant settling can be studied to optimize the chemical structures of the friction reducers in the process of synthesis and optimize the hydraulic fracturing operation, e.g. to determine the proper concentration of friction reducers according to the salinity and proppant size.
A method to determine the velocity of static proppant settling in fracturing fluids. The proppant carrying capability of different friction reducer products can be compared, so the appropriate friction reducer product can be selected for hydraulic fracturing operations. The effect of friction reducer concentrations in the fracturing fluids, the salinity and hardness of the fracturing fluids, and the proppant size on the velocity of static proppant settling can be studied to optimize the chemical structures of the friction reducers in the process of synthesis and optimize the hydraulic fracturing operation, e.g. to determine the proper concentration of friction reducers according to the salinity and proppant size.
A low-end rheology modifier for adjusting rheological characteristics of water-based drilling fluid systems, particularly for high salt, high density drilling fluids in high temperature and high-pressure applications. The low end rheology modifier comprises a copolymer and laponite clay, the copolymer comprising tert-Butylacrylamidosulfonic acid (TBAS) and n-vinylpyrrolidone (NVP) crosslinked with N,N'-Methylenebis(acrylamide).
A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
A low-end rheology modifier for adjusting rheological characteristics of water-based drilling fluid systems, particularly for high salt, high density drilling fluids in high temperature and high-pressure applications. The low end rheology modifier comprises a copolymer and laponite clay, the copolymer comprising tert-Butylacrylamidosulfonic acid (TBAS) and n-vinylpyrrolidone (NVP) crosslinked with N,N′-Methylenebis(acrylamide).
The patent application discloses a degradable composite with coatings. The light metal workpiece with enhanced surface protection may comprise a light metal matrix having an exposed surface; a light metal oxide ceramic layer formed in at least a portion of the exposed surface; and a non-transparent metal alloy layer directly on the light metal oxide ceramic layer.
The retrievable packer system includes a packer mandrel, a lock ring, an upper cone, a lower cone, a slip device, a retrieval mandrel, and a slotted retrieval sleeve. The lock ring is attached to the packer mandrel, followed by the upper cone, the slip device, the lower cone, and the retrieval mandrel. The upper connection sleeve and the lower connection sleeve cover the packer mandrel so as to form a chamber in fluid connection with slip flow channels of the slip device. The packer system is run into the borehole with the slotted retrieval sleeve in the first position relative to the lower cone and the slip device in the run-in position. The packer system is set and can be locked at a location in the borehole. The slotted retrieval sleeve can push the upper cone to return the slip device to the run-in position for retrieval of the packer system.
E21B 33/129 - PackersBouchons à patins mécaniques pour accrochage dans le tubage
E21B 23/06 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage pour le montage des packers
A method for significantly reducing and/or preventing loss circulation in a well during drilling operations. The method includes pumping water-based drilling fluid comprising shape memory polymer particles into bore hole while drilling and exposing the drilling fluid to an activation temperature. The polymer particles change shape at activation temperature filling all or portion of fractures in the bore hole thus significantly reducing and/or preventing loss circulation in the well.
A method for significantly reducing and/or preventing loss circulation in a well during drilling operations. The method includes pumping water-based drilling fluid comprising shape memory polymer particles into bore hole while drilling and exposing the drilling fluid to an activation temperature. The polymer particles change shape at activation temperature filling all or portion of fractures in the bore hole thus significantly reducing and/or preventing loss circulation in the well. eodcmaster eodcmaster eodcmaster
The polyester based polymer composition includes a polyester, a metal oxide, and a metal hydroxide. The polymer composites contains the metal oxide and a metal hydroxide made from melting blending has good mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The reinforced polymer composites with glass fibers, and the metal oxide and metal hydroxide made from melting blending has higher mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The polymer composites made from melting blending have the required mechanical properties and the degradability so that the polymer composites can be used for degradable or dissolvable component of a downhole tool.
C08G 63/02 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés
C08G 63/12 - Polyesters dérivés soit d'acides hydroxycarboxyliques, soit d'acides polycarboxyliques et de composés polyhydroxylés dérivés d'acides polycarboxyliques et de composés polyhydroxylés
The polyester based polymer composition includes a polyester, a metal oxide, and a metal hydroxide. The polymer composites contains the metal oxide and a metal hydroxide made from melting blending has good mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The reinforced polymer composites with glass fibers, and the metal oxide and metal hydroxide made from melting blending has higher mechanical property as well as greater degradability after a required time in the higher temperatures and moisture of downhole conditions. The polymer composites made from melting blending have the required mechanical properties and the degradability so that the polymer composites can be used for degradable or dissolvable component of a downhole tool.
A dissolvable magnesium alloy can be used for components of a downhole tool. The dissolvable magnesium alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes nickel at 0.04-0.4% by weight and the balance of magnesium. The alloy is dissolvable in KCI at 2.1% by weight and 95 °C with a dissolving rate in a range of 10-100 mg/cm2/hr, yield strength in a range of 18-37 ksi, ultimate tensile strength in a range of 29-47 ksi, and elongation in a range of 8-40%.
A dissolvable magnesium alloy can be used for components of a downhole tool. The dissolvable magnesium alloy can be dissolved completely and controlled at a dissolving rate so as to be compatible with downhole operations, including hydraulic fracturing operations. The alloy includes nickel at 0.04-0.4% by weight and the balance of magnesium. The alloy is dissolvable in KCl at 2.1% by weight and 95 QC with a dissolving rate in a range of 10-100 mg/cm2/hr, yield strength in a range of 18-37 ksi, ultimate tensile strength in a range of 29-47 ksi, and elongation in a range of 8-40%.
C22C 1/02 - Fabrication des alliages non ferreux par fusion
C22F 1/06 - Modification de la structure physique des métaux ou alliages non ferreux par traitement thermique ou par travail à chaud ou à froid du magnésium ou de ses alliages
77.
FORMULATION AND PROCESSING OF DEGRADABLE HIGH Tg EPOXY COMPOSITE THAT CAN BE DEGRADABLE AT EXTREMELY LOW TEMPERATURE
The patent application discloses a degradable thermoset composite. The composite comprises a reaction product of an epoxy resin, a cross-linker, a catalyst. The epoxy resin mixture may comprise at least one cycloaliphatic epoxide. The reaction product may have a glass transition temperature greater than or equal to 140°C as measured by DMA.
C08G 59/18 - Macromolécules obtenues par polymérisation à partir de composés contenant plusieurs groupes époxyde par molécule en utilisant des agents de durcissement ou des catalyseurs qui réagissent avec les groupes époxyde
C08G 59/40 - Macromolécules obtenues par polymérisation à partir de composés contenant plusieurs groupes époxyde par molécule en utilisant des agents de durcissement ou des catalyseurs qui réagissent avec les groupes époxyde caractérisées par les agents de durcissement utilisés
C08G 59/42 - Acides polycarboxyliquesLeurs anhydrides, halogénures ou esters à bas poids moléculaire
C09K 5/02 - Substances qui subissent un changement d'état physique lors de leur utilisation
78.
Formulation and processing of degradable high Tg epoxy composite that can be degradable at extremely low temperature
The patent application discloses a degradable thermoset composite. The composite comprises a reaction product of an epoxy resin, a cross-linker, a catalyst. The epoxy resin mixture may comprise at least one cycloaliphatic epoxide. The reaction product may have a glass transition temperature greater than or equal to 140° C. as measured by DMA.
C08G 59/68 - Macromolécules obtenues par polymérisation à partir de composés contenant plusieurs groupes époxyde par molécule en utilisant des agents de durcissement ou des catalyseurs qui réagissent avec les groupes époxyde caractérisées par les catalyseurs utilisés
C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
Some reservoirs have tight oil formations, such as the Changqing reservoir. The surfactant polymer flooding and low-tension gas flooding are two potential chemical flooding methods for use in tight oil formations. In these methods, an oil displacement agent, or surfactant, is added. Derivatives of nonionic surfactants with extended chains (by propylene oxide and ethylene oxide) from di-alkyl alcohols were developed and tested. A synergistic blend of surfactants was developed between the di-alkyl chain surfactants and a commercially available anionic surfactants that lowers interfacial tension and improves surfactant solubility in high salinity water and oil.
C09K 23/42 - Éthers, p. ex. éthers polyglycoliques d'alcools ou de phénols
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
80.
A UNIQUE PDC MICROSTRUCTURE AND THE METHOD OF MAKING IT
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with a catalytic material from the substrate.
B24D 3/10 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques métalliques à structure poreuse ou alvéolaire, p. ex. pour utiliser avec des diamants en tant qu'abrasifs
B24D 3/02 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants
B24D 3/04 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement inorganiques
E21B 10/46 - Trépans caractérisés par des parties résistant à l'usure, p. ex. des diamants rapportés
81.
Unique PDC microstructure and the method of making it
A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a diamond table and a substrate. The diamond table may be attached to the substrate. The diamond table may include bonded diamond grains defining interstitial channels. The interstitial channels may be filled with non-catalytic binder materials in some regions. The interstitial channels in some other regions may be filled with a catalytic materials from the substrate.
This disclosure describes the composition and methods of use for a novel delayed polymer gelation system for high temperature and high salinity applications. This polymer gelation system includes a polymer of acrylamide, AMPS and 500-5000 ppm polyethylene glycol diacrylate in inverse emulsion form, and a polyethyleneimine (PEI) with a MW of 2,000-30,000 daltons as the crosslinking agent.
A hydraulic fracture fluid is provided. The fluid can include a liquid solvent, one or more surfactants, a proppant-forming compound, and one or more curing agents. The liquid reacts to form proppant in-situ under downhole conditions.
The patent application discloses a degradable polymers compounds. The polymer compounds comprises product of blends of polyglycolic acid and polylactic acid in a weight ratio of from about 99/1 to about 50/50 in mixture with a compatibilizer poly(lactic-co-glycolic acid), wherein the compounded product has a tensile strength of at least about 12,000 psi.
The disclosure includes a new test method of evaluating lost circulation prevention with expandable geopolymers. The expandable geopolymer is tested using a permeability plugging tester, slot disk, drilling fluid, and a piston to determine how much fluid is released from the test cell.
C09K 8/00 - Compositions pour le forage des puits ou des trous de forageCompositions pour le traitement des puits ou des trous de forage, p. ex. pour des opérations de complétion ou de réparation
C09K 8/487 - Additifs régulant les pertes de fluideAdditifs pour réduire ou empêcher la perte de circulation
G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
C09K 8/504 - Compositions à base d'eau ou de solvants polaires
C04B 28/00 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates
C04B 28/02 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates contenant des ciments hydrauliques autres que ceux de sulfate de calcium
86.
LOST CIRCULATION TEST METHOD FOR EXPANDABLE GEOPOLYMERS
The disclosure includes a new test method of evaluating lost circulation prevention with expandable geopolymers. The expandable geopolymer is tested using a permeability plugging tester, slot disk, drilling fluid, and a piston to determine how much fluid is released from the test cell.
E21B 49/08 - Prélèvement d'échantillons de fluides ou test des fluides dans les trous de forage ou dans les puits
C09K 8/487 - Additifs régulant les pertes de fluideAdditifs pour réduire ou empêcher la perte de circulation
C04B 28/00 - Compositions pour mortiers, béton ou pierre artificielle, contenant des liants inorganiques ou contenant le produit de réaction d'un liant inorganique et d'un liant organique, p. ex. contenant des ciments de polycarboxylates
87.
NOVEL COATING FOR CORROSION AND WEAR PROTECTION OF TEMPORARY DOWNHOLE ARTICLE DURING CONVEYANCE AND OPERATION
The patent application discloses a degradable composite with coatings. The light metal workpiece with enhanced surface protection may comprise a light metal matrix having an exposed surface; a light metal oxide ceramic layer formed in at least a portion of the exposed surface; and a non-transparent metal alloy layer directly on the light metal oxide ceramic layer.
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
B05D 5/00 - Procédés pour appliquer des liquides ou d'autres matériaux fluides aux surfaces pour obtenir des effets, finis ou des structures de surface particuliers
B05D 7/00 - Procédés, autres que le flocage, spécialement adaptés pour appliquer des liquides ou d'autres matériaux fluides, à des surfaces particulières, ou pour appliquer des liquides ou d'autres matériaux fluides particuliers
Co-cured blends of fluoroelastomers of tetrafluoroethylene-propylene copolymer with cure site monomer and terpolymers of Vinylidene fluoride (VDF), Hexafluoropropylene (HFP) and Tetrafluoroethylene (TFE) with peroxide as initiator and coagent TAIC as crosslinker show improved curing performance, improved mechanical properties and improved compression set as well. The co-cured fluoroelastomers show improved chemical resistance to the solvent aging systems and better retention of mechanical properties after aging at high temperature in the solvents system.
C08F 214/00 - Copolymères de composés contenant un ou plusieurs radicaux aliphatiques non saturés, chaque radical ne contenant qu'une seule liaison double carbone-carbone et l'un au moins étant terminé par un halogène
A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
Some reservoirs have tight oil formations, such as the Changqing reservoir. The surfactant polymer flooding and low tension gas flooding are two potential chemical flooding methods for use in tight oil formations. In these methods, an oil displacement agent, or surfactant, is added. Nonionic surfactants with extended chains (by propylene oxide and ethylene oxide) from dialkyl alcohols or dialkyl amines were tested. A synergistic blend of surfactants was developed between the nonionic surfactants and anionic surfactants that lowers interfacial tension and improves surfactant solubility in water and oil.
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
C09K 8/594 - Compositions utilisées en combinaison avec du gaz injecté
C09K 8/588 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de polymères spécifiques
The patent application discloses a degradable polymers compounds. The polymer compounds comprises product of blends of polyglycolic acid and polylactic acid in a weight ratio of from about 99/1 to about 50/50 in mixture with a compatibilizer poly(lactic-co-glycolic acid), wherein the compounded product has a tensile strength of at least about 12,000 psi.
A61L 27/18 - Matériaux macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.
C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
93.
Method for making nano- and micro-particles for use as a proppant and fluid-loss-control additive
Nano- and micro-particles (NMP) can be formed from an oil/water emulsion. The emulsion is made by mixing a liquid solvent, at least one surfactant, a particle-forming compound, and at least curing agent. If desired, pH control agents and viscosity enhancers can be added to the liquid solvent. The particle-forming compound and the curing agents are mixed together and form the oil phase in the emulsion and after curing, the particles are formed. The nano- and micro-particles can be used as proppant to enhance the conductivity of nano- and microfractures and fluid-loss-control additive for hydraulic fracturing operations.
The patent application discloses a degradable thermoset composite. The composite comprises a reaction product of an epoxy resin mixture, a cross-linker, a catalyst. The epoxy resin mixture may comprise at least one aromatic epoxy resins having a glass transition temperature greater than or equal to 150° C. The reaction product may have a glass transition temperature greater than or equal to 110° C. as measured by DSC or DMA.
A chemical composition for a degradable polymeric material includes an isocyanate terminated prepolymer, including prepolymer units as a main chain with a plurality of isocynanates at ends of the main chain, a catalyst additive, and a cross-linking agent. The isocyanate terminated prepolymer can be an isocyanate terminated polyester, polycarbonate or polyether prepolymer. The isocyanate terminated prepolymer has a structural formula as follows:
A chemical composition for a degradable polymeric material includes an isocyanate terminated prepolymer, including prepolymer units as a main chain with a plurality of isocynanates at ends of the main chain, a catalyst additive, and a cross-linking agent. The isocyanate terminated prepolymer can be an isocyanate terminated polyester, polycarbonate or polyether prepolymer. The isocyanate terminated prepolymer has a structural formula as follows:
ONC—R″—NH—[—CO—R—CO—O—R′—O—]n—NH—R″—CNO
A chemical composition for a degradable polymeric material includes an isocyanate terminated prepolymer, including prepolymer units as a main chain with a plurality of isocynanates at ends of the main chain, a catalyst additive, and a cross-linking agent. The isocyanate terminated prepolymer can be an isocyanate terminated polyester, polycarbonate or polyether prepolymer. The isocyanate terminated prepolymer has a structural formula as follows:
ONC—R″—NH—[—CO—R—CO—O—R′—O—]n—NH—R″—CNO
wherein R, R′ and R″ are an aryl group or alkyl group and wherein n is a number of prepolymer units corresponding to length of the main chain. The composition degrades at a rate and at a delay for failure between 8-72 hours. The composition is a dissolvable rubber material with a modulus and elongation suitable for a component of a downhole tool.
C08G 18/10 - Procédés mettant en œuvre un prépolymère impliquant la réaction d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs, dans une première étape réactionnelle
The method for forming cutters includes applying a protective layer on an O-ring so as to form a protected O-ring. The protected O-ring is placed around a cutter body having a substrate section and diamond section with a metallic binder. The method includes inserting the cutter body into the pod cavity and leaching the metallic binder through an end portion of the diamond section for at least one day at 60 degrees Celsius or higher so as to form a polycrystalline diamond compact cutter from the cutter body. The protected O-ring seals the substrate section during the step of leaching. The step of leaching forms an exposed O-ring from the protected O-ring with a hardness reduction and a modulus reduction that identifies a time window for maintaining a sealing force to protect the substrate, while achieving the target profile of the diamond table for a high quality and reliable cutter.
B23P 15/28 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'outils de coupe
F16J 15/3284 - Joints d'étanchéité entre deux surfaces mobiles l'une par rapport à l'autre par joints élastiques, p. ex. joints toriques caractérisés par leur structureEmploi des matériaux
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
97.
Composition and Method for Breaking Synthetic-Polymer-Type Stimulation Fluids
Disclosed herein are breaking additives and methods for use with synthetic polymer-type fracturing fluids. Compared with polysaccharide-type gelling agents, such as guar and guar derivatives, synthetic-polymers such as polyacrylamide-type gelling agents are more difficult to break using common oxidizing breakers because their backbones are composed of strong carbon-carbon bonds.
C09K 8/74 - Produits chimiques érosifs, p. ex. acides combinés avec des additifs ajoutés à des fins spécifiques
C09K 8/70 - Compositions pour la formation de crevasses ou de fractures caractérisées par leur forme ou par la forme de leurs composants, p. ex. mousses
C09K 8/72 - Produits chimiques érosifs, p. ex. acides
98.
Composition and method for improving the production of petroleum hydrocarbons
A novel surfactant composition that comprises of two surfactant components, a solvent, and water. The surfactant composition is added to a fracturing fluid, which is then pumped downhole into a subterranean formation where the novel characteristics of the fracturing fluid lend to improved oil production over the fracturing fluid without the surfactant composition.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/66 - Compositions à base d'eau ou de solvants polaires
C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
C09K 8/584 - Compositions pour les méthodes de récupération assistée pour l'extraction d'hydrocarbures, c.-à-d. pour améliorer la mobilité de l'huile, p. ex. fluides de déplacement caractérisées par l'utilisation de tensio-actifs spécifiques
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
E21B 41/02 - Lutte contre la corrosion sur place dans les trous de forage ou dans les puits
E21B 37/06 - Procédés ou appareils pour nettoyer les trous de forage ou les puits utilisant des moyens chimiques pour empêcher ou limiter le dépôt de paraffine ou de substances analogues
99.
Treatment of subterranean formations with crosslinked fluids
Disclosed herein is a crosslinked HPG fluid system using a very low concentration of HPG polymer. The fluid system is able to be used at low HPG concentrations while maintaining stable viscosity for over two hours at elevated temperatures.
A drill bit for cutting formation comprises a bit body, a plurality of cutters, and a plurality of blades with pockets to accommodate the cutters, respectively. In an embodiment, the plurality of cutters comprise a substrate, an ultra-hard layer, a concave surface on the top of the ultra-hard layer, wherein the concave surface comprises a plurality of planar and curved surfaces.
E21B 10/567 - Parties rapportées du type bouton comportant des éléments de coupe préformés montés sur un support distinct, p. ex. parties rapportées polycristallines
B23C 5/22 - Dispositifs pour la fixation des taillants ou des dents
brevets
