Techniques for adaptively performing an operation in a well system that include determining, using a control sub-system, an operation schedule that indicates control action steps in the operation; instructing, using the control sub-system, the well system to initiate a first control action step of the operation that transitions a first fluid valve from a first current valve state to a first target valve state; determining, using the control sub-system, whether an expedited performance parameter associated with the operation is set in the operation schedule; and in response to determining that the expedited performance parameter associated with the operation is set, instructing, using the control sub-system, the well system to initiate a second control action step of the operation that transitions a second fluid valve from a second current valve state to a second target valve state before the first fluid valve achieves the first target valve state.
A fluid transfer system includes a valve tree, the valve tree having a master valve having a flow axis and a header. The fluid transfer system further includes a coupler disposed between, connected to, and in fluid communication with, the valve tree and the header. The coupler has a fixed length and includes a coupler multi-path flow connector in fluid communication with the valve tree. The coupler also includes a flow control valve having a flow axis, the flow control valve directly coupled to the coupler multi-path flow connector and in fluid communication with the header.
F16K 11/22 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont plusieurs éléments de fermeture ne se déplacent pas comme un tout actionnés par des organes de commande distincts chacun étant propre à une soupape, p. ex. conjugués pour former clapet à voies multiples
E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p. ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
F16L 23/04 - Raccords à brides les brides étant raccordées par des organes tendus dans le plan radial
F16L 37/08 - Accouplements du type à action rapide dans lesquels l'assemblage entre les extrémités s'aboutant ou se chevauchant est maintenu par des organes de blocage
Techniques for implementing and/or operating a well system including a rotatable casing hanger and a rotatable running tool. The rotatable casing hanger includes a hanger body, which is to be secured to a casing string; a hanger sleeve secured circumferentially around the hanger body, in which the hanger sleeve is to be landed on another wellhead component; and a hanger bearing assembly disposed axially between the hanger body and the hanger sleeve. The rotatable running tool includes a tool body that defines a tool bore, in which the tool body is to be selectively secured to the hanger body; a tool sleeve secured circumferentially around the tool body to facilitate maintaining centralization of the tool body and, thus, the rotatable casing hanger; and a tool bearing assembly disposed between the tool body and the tool sleeve.
Techniques for coordinating performance of operations in a well system including receiving, using a central controller, a request to perform a next operation associated with a first operator that includes changing well system equipment from a current equipment state to a target equipment state from a first operator device, determining, using the central controller, whether completion confirmation of a preceding operation associated with a second operator has been received from a second operator device, in response to determining that the completion confirmation of the preceding operation associated with the second operator has not been received, blocking, using the central controller, the first operator from performing the next operation from the first operator device, and in response to determining that the completion confirmation of the preceding operation associated with the second operation has been received, permitting, using the central controller, performance of the next operation associated with the first operator.
A remote hydraulic system for controlling a valve of a wellhead or frac manifold includes a remote hydraulic skid, control skid, and power supply skid. The remote hydraulic skid includes a hydraulic reservoir, a hydraulic pump, an accumulator, a hydraulic manifold operatively coupled to the accumulator, and a hydraulic valve operatively coupled to the hydraulic manifold. The hydraulic valve is operatively coupled to the valve of the wellhead or frac manifold by a hydraulic line. The control skid includes an interface and is operatively coupled to the remote hydraulic skid. The power supply skid is coupled to the remote hydraulic skid to provide the power necessary to drive the hydraulic pump on the remote hydraulic skid. The remote hydraulic skid is positioned within a hazardous zone around the wellhead, while the control skid and power supply skid are positioned outside of the hazardous zone.
Techniques for coordinating performance of operations in a well system including receiving, using a central controller, a request to perform a next operation associated with a first operator that includes changing well system equipment from a current equipment state to a target equipment state from a first operator device, determining, using the central controller, whether completion confirmation of a preceding operation associated with a second operator has been received from a second operator device, in response to determining that the completion confirmation of the preceding operation associated with the second operator has not been received, blocking, using the central controller, the first operator from performing the next operation from the first operator device, and in response to determining that the completion confirmation of the preceding operation associated with the second operation has been received, permitting, using the central controller, performance of the next operation associated with the first operator.
A wellhead assembly includes a wellhead housing, the wellhead housing including a lock screw receptacle. The wellhead assembly includes an outer nested wellhead component positioned within the wellhead housing, the outer nested wellhead component including a lock screw aperture. The wellhead assembly includes an inner nested wellhead component, the inner nested wellhead component including an inner receptacle. The wellhead assembly includes a nested lock screw. The nested lock screw includes an outer sleeve, the outer sleeve having external threads formed on an outer surface thereof, the outer sleeve threadedly coupled to the lock screw receptacle of the wellhead housing. The nested lock screw includes an inner lock screw, the inner lock screw positioned within and threadedly coupled to the outer sleeve, the inner lock screw passing through the lock screw aperture and engaging the inner receptacle.
E21B 33/04 - Têtes de tubageSuspension des tubages ou des colonnes de production dans les têtes de 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 29/12 - Découpage ou destruction de tubes, packers, bouchons ou câbles, situés dans les trous de forage ou dans les puits, p. ex. découpage de tubes endommagés, de fenêtresDéformation des tubes dans les trous de forageRemise en état des tubages de puits sans les retirer du sol spécialement adapté aux installations sous-l'eau
E21B 33/00 - Étanchement ou bouchage des trous de forage ou des puits
F16L 19/00 - Raccords dans lesquels les surfaces d'étanchéité sont maintenues en contact par un organe, p. ex. un écrou à oreilles vissé dans, ou vissé sur une des parties du raccord
A fluid transfer system includes a valve tree, the valve tree having a master valve having a flow axis and a header. The fluid transfer system further includes a coupler disposed between, connected to, and in fluid communication with, the valve tree and the header. The coupler has a fixed length and includes a coupler multi-path flow connector in fluid communication with the valve tree. The coupler also includes a flow control valve having a flow axis, the flow control valve directly coupled to the coupler multi-path flow connector and in fluid communication with the header.
F16K 11/22 - Soupapes ou clapets à voies multiples, p. ex. clapets mélangeursRaccords de tuyauteries comportant de tels clapets ou soupapesAménagement d'obturateurs et de voies d'écoulement spécialement conçu pour mélanger les fluides dont plusieurs éléments de fermeture ne se déplacent pas comme un tout actionnés par des organes de commande distincts chacun étant propre à une soupape, p. ex. conjugués pour former clapet à voies multiples
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
F16L 37/08 - Accouplements du type à action rapide dans lesquels l'assemblage entre les extrémités s'aboutant ou se chevauchant est maintenu par des organes de blocage
E21B 33/038 - Connecteurs utilisés sur les têtes de puits, p. ex. pour relier l'obturateur anti-éruption et la colonne montante dans l'eau
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
F16L 23/04 - Raccords à brides les brides étant raccordées par des organes tendus dans le plan radial
9.
Systems and methods for deployment of a frac ball into a wellbore
A ball dropper assembly includes a main body, a sealing piston, and a magazine assembly. The main body includes a main bore, angle bore, and transverse bore formed therethrough. The transverse bore is fluidly coupled to the main bore through the angle bore. The sealing piston is positioned within the transverse bore. Seal rings are positioned between the main body and the sealing piston on either side of the angle bore. The magazine assembly includes a magazine body and a carrier piston. The magazine body is mechanically coupled to the main body. The carrier piston has a carrier hole formed therein and is mechanically coupled to the sealing piston.
E21B 33/068 - Têtes de puitsLeur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
A wellhead assembly includes a wellhead housing, the wellhead housing including a lock screw receptacle. The wellhead assembly includes an outer nested wellhead component positioned within the wellhead housing, the outer nested wellhead component including a lock screw aperture. The wellhead assembly includes an inner nested wellhead component, the inner nested wellhead component including an inner receptacle. The wellhead assembly includes a nested lock screw. The nested lock screw includes an outer sleeve, the outer sleeve having external threads formed on an outer surface thereof, the outer sleeve threadedly coupled to the lock screw receptacle of the wellhead housing. The nested lock screw includes an inner lock screw, the inner lock screw positioned within and threadedly coupled to the outer sleeve, the inner lock screw passing through the lock screw aperture and engaging the inner receptacle.
E21B 33/04 - Têtes de tubageSuspension des tubages ou des colonnes de production dans les têtes de 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 23/04 - Appareils pour déplacer, mettre en place, verrouiller, libérer ou retirer, les outils, les packers ou autres éléments dans les trous de forage mis en œuvre à l'aide de moyens fluides, p. ex. actionnés par explosion
F16L 19/00 - Raccords dans lesquels les surfaces d'étanchéité sont maintenues en contact par un organe, p. ex. un écrou à oreilles vissé dans, ou vissé sur une des parties du raccord
A remote hydraulic system for controlling a valve of a wellhead or frac manifold includes a remote hydraulic skid, control skid, and power supply skid. The remote hydraulic skid includes a hydraulic reservoir, a hydraulic pump, an accumulator, a hydraulic manifold operatively coupled to the accumulator, and a hydraulic valve operatively coupled to the hydraulic manifold. The hydraulic valve is operatively coupled to the valve of the wellhead or frac manifold by a hydraulic line. The control skid includes an interface and is operatively coupled to the remote hydraulic skid by a control line. The control skid is adapted to control the actuation of the hydraulic valve. The power supply skid is coupled to the remote hydraulic skid to provide the power necessary to drive the hydraulic pump on the remote hydraulic skid. The remote hydraulic skid is positioned within a hazardous zone around the wellhead, while the control skid and power supply skid are positioned outside of the hazardous zone.
A ball dropper assembly includes a main body, a sealing piston, and a magazine assembly. The main body includes a main bore, angle bore, and transverse bore formed therethrough. The transverse bore is fluidly coupled to the main bore through the angle bore. The sealing piston is positioned within the transverse bore. Seal rings are positioned between the main body and the sealing piston on either side of the angle bore. The magazine assembly includes a magazine body and a carrier piston. The magazine body is mechanically coupled to the main body. The carrier piston has a carrier hole formed therein and is mechanically coupled to the sealing piston.
E21B 33/068 - Têtes de puitsLeur mise en place comportant des dispositions pour introduire des objets dans les puits ou pour les en retirer, ou pour y introduire des fluides
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
A gate valve and gate member for a gate valve, which may be used for hydrocarbon well fracturing operations with a fracturing fluid, or “frac fluid”, includes a seat, having a seat end face which is in sliding contact with a gate member that has a sealing face surface with at least one recess formed in the sealing face surface of the gate member.
F16K 3/02 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation planesGarnitures d'étanchéité à cet effet
An isolation sleeve for a wellbore includes a sleeve body and a torque sleeve. The torque sleeve threadedly couples to the sleeve body. The torque sleeve includes a compression shoulder. The isolation sleeve includes a compression seal positioned about the torque sleeve between the compression shoulder and the sleeve body. The isolation sleeve also includes a lock ring coupled to the sleeve body that engages a packoff. The lock ring is urged into engagement with the packoff by an energizing ring.
E21B 33/04 - Têtes de tubageSuspension des tubages ou des colonnes de production dans les têtes de puits
E21B 33/043 - Têtes de tubageSuspension des tubages ou des colonnes de production dans les têtes de puits spécialement adaptées aux têtes de puits sous l'eau
A valve position indicator for a valve includes a spline barrel, indicator flag, and follower. The spline barrel may be generally tubular and may be positionable about a tail stem protector of the valve. The spline barrel may have a helical slot formed therein. The spline barrel may be rotatably coupled to the tail stem protector of a valve. The indicator flag may be coupled to the spline barrel and may extend radially therefrom. The follower may be coupleable to a tail stem of the valve. The follower may extend in a direction perpendicular to the extent of the tail stem. The follower may extend through a slot in the tail stem protector and the helical slot of the spline barrel when the spline barrel is positioned about the tail stem protector.
F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
F16K 31/528 - Moyens mécaniques d'actionnement à manivelle, excentrique ou came à ergot et encoche
A wellhead assembly includes a wellhead housing; a tubing hanger, plug, back pressure valve, two-way check valve, BOP test plug, temporary abandonment plug, or other device; and a torque ring. The wellhead housing includes an inner bore. The wellhead housing has one or more mating grooves formed on an inner wall of the wellhead housing. The tubing hanger, plug, back pressure valve, two-way check valve, BOP test plug, temporary abandonment plug, or other device is positioned within the inner bore of the wellhead housing. The torque ring is positioned within a slot formed in the tubing hanger or other device. The torque ring includes a protrusion extending beyond the tubing hanger and into the mating groove.
A valve position indicator for a valve includes an outer housing, actuation rod, indicator flag, and follower. The actuation rod is positioned within the outer housing, which is couplable to a tail stem protector of the valve. The actuation rod may have a helical slot formed therein. The actuation rod may be rotatably coupled to the outer housing. The indicator flag may be coupled to the actuator rod and may extend radially therefrom. The follower may be couplable to a tail stem of the valve. The follower may extend in a direction perpendicular to the extent of the tail stem. The follower may extend through a slot in the tail stem protector and into the helical slot of the actuation rod when the valve position indicator is coupled to the tail stem protector.
F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
F16K 3/02 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation planesGarnitures d'étanchéité à cet effet
F16K 31/528 - Moyens mécaniques d'actionnement à manivelle, excentrique ou came à ergot et encoche
A remote greasing system for lubricating a valve of a wellhead or frac manifold includes a grease supply skid, remote greasing skid, and a control skid. The grease supply skid includes a grease reservoir and a grease pump. The remote greasing skid includes a grease manifold and a grease supply valve. The grease manifold is operatively coupled to the grease pump of the grease supply skid by a grease trunk line. The grease supply valve is operatively coupled to the grease manifold. The grease supply valve includes an output port operatively coupled to a lubrication port of the valve of the wellhead or frac manifold by a grease supply line. The control skid is operatively coupled to the remote greasing skid by a control line. The grease supply skid and remote greasing skid are positioned within a hazardous zone, and the control skid is positioned outside of the hazardous zone.
E21B 41/00 - Matériel ou accessoires non couverts par les groupes
F16N 11/08 - Installations à graisse, à réservoir ou autre source fixes, pour le graissage des machines ou organes machineGraisseurs avec entraînement mécanique autre que direct par ressort ou poids
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
An adapter for coupling wellhead pressure control equipment to wellhead mounted equipment, includes a breech pin and a breech lock base assembly. The breech pin includes a tubular breech pin body and a rotating breech ring. The rotating breech ring is coupled to and rotatable relative to the breech pin body. The rotating breech ring includes a breech ring body and one or more breech pin teeth extending radially outward from the breech ring body. The breech lock base assembly includes a tubular base assembly body. An upper end of the bore of the base assembly body defines an upper receiver. The breech lock base assembly includes a fixed retaining ring including one or more fixed breech teeth. The fixed breech teeth extend radially inward into the upper receiver. The fixed breech teeth are positioned to correspond with the spaces between the breech pin teeth.
A valve position indicator for a valve includes a spline barrel, indicator flag, and follower. The spline barrel may be generally tubular and may be positionable about a tail stem protector of the valve. The spline barrel may have a helical slot formed therein. The spline barrel may be rotatably coupled to the tail stem protector of a valve. The indicator flag may be coupled to the spline barrel and may extend radially therefrom. The follower may be coupleable to a tail stem of the valve. The follower may extend in a direction perpendicular to the extent of the tail stem. The follower may extend through a slot in the tail stem protector and the helical slot of the spline barrel when the spline barrel is positioned about the tail stem protector.
F16K 37/00 - Moyens particuliers portés par ou sur les soupapes ou autres dispositifs d'obturation pour repérer ou enregistrer leur fonctionnement ou pour permettre de donner l'alarme
F16K 31/528 - Moyens mécaniques d'actionnement à manivelle, excentrique ou came à ergot et encoche
A gate valve and gate member for a gate valve, which may be used for hydrocarbon well fracturing operations with a fracturing fluid, or “frac fluid”, includes a seat, having a seat end face which is in sliding contact with a gate member that has a sealing face surface with at least one recess formed in the sealing face surface of the gate member.
F16K 3/02 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation planesGarnitures d'étanchéité à cet effet
Oil and gas well equipment, namely, an assembly of tubular components in the nature of rigid metal pipes, including at least one valve, that connects a frac missile to a wellbore
Parts of wellhead machines, namely, mechanical valve status indicators which indicate if a valve is open or closed; mechanical valve status indicators, which indicate if a valve is open or closed, being parts of machines
Wellhead machines used in oil and gas well drilling operations comprised of casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves; Parts of wellhead machines used in oil and gas well drilling operations, namely, casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves
(1) Oil and gas well equipment, namely, a machine used in drilling oil and gas wells that connects a wireline lubricator to a frac tree via a hydraulic interface
A casing hanger and running tool system and method for rotating a casing string in a borehole include a selectively engageable connection between the casing hanger and the running tool whereby upon rotation of the casing hanger and running tool in a first direction, a length of casing may be rotated without any substantial tightening of a threaded connection between the running tool and the casing hanger, and upon rotation of the running tool in a second direction, the threaded connection between the running tool and the casing hanger may be disengaged.
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
(1) Oilfield wellhead machines used in oil and gas well drilling operations comprised of casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves.
Oil and gas well equipment, namely, a machine used in drilling oil and gas wells that connects a wireline lubricator to a frac tree via a hydraulic interface
Oilfield wellhead machines used in oil and gas well drilling operations comprised of casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves
A gate valve and a seat insert for a gate valve having a valve body, which may be used for hydrocarbon well fracturing operations with a fracturing fluid, or “frac fluid”, includes a seat pocket for receipt of the seat insert and a seat, which seat insert may include a tubular member having a first and a second seat insert end face, the first and second seat insert end faces each include at least one annular seal, and the seat insert is disposed in the seat pocket with the first seat insert end face sealed against the valve body and the second seat insert end face sealed against the seat.
F16K 3/02 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture à faces d'obturation planesGarnitures d'étanchéité à cet effet
F16K 27/04 - Structures des logementsMatériaux utilisés à cet effet des tiroirs
F16K 3/30 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture Détails
A gate valve and a seat insert for a gate valve having a valve body, which may be used for hydrocarbon well fracturing operations with a fracturing fluid, or "frac fluid", includes a seat pocket for receipt of the seat insert and a seat, which seat insert may include a tubular member having a first and a second seat insert end face, the first and second seat insert end faces each include at least one annular seal, and the seat insert is disposed in the seat pocket with the first seat insert end face sealed against the valve body and the second seat insert end face sealed against the seat.
E21B 34/02 - Aménagements des vannes pour les trous de forage ou pour les puits dans les têtes de puits
F16K 3/00 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture
F16K 3/30 - Robinets-vannes ou tiroirs, c.-à-d. dispositifs obturateurs dont l'élément de fermeture glisse le long d'un siège pour l'ouverture ou la fermeture Détails
(1) Wellheads used in oil and gas well drilling operations, namely, casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves.
Wellheads used in oil and gas well drilling operations, namely, casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adapters, test plugs, wear bushings, tees, crosses, tree caps, chokes and valves, gate valves and large bore valves
(1) Wellheads used in land-based, oil and gas well drilling operations and component parts of wellheads used in land-based, oil and gas well drilling, namely, casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adaptors, test plugs, wear bushings, running tools, secondary seals, chokes, and valves
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Maintenance and repair services for equipment used in fracturing oil and gas wells to ensure proper functioning
(2) Monitoring and testing services for equipment used in fracturing oil and gas wells to ensure proper functioning
38.
Wellhead system and method for installing a wellhead system
A wellhead system for supporting at least one section of a casing in a borehole for use with a conductor pipe and a method for installing a wellhead system upon a conductor pipe are disclosed. The wellhead system may include a wellhead housing having a central interior bore with a diameter that is smaller than the interior diameter of the conductor pipe and a blowout preventer having an interior bore having a diameter which is less than the diameter of the conductor pipe. The method may include securing a wellhead housing having a central interior bore with a diameter that is smaller than the interior diameter of the conductor pipe and associating with the wellhead housing a blowout preventer having a central interior bore with a diameter that is smaller than the interior diameter of the conductor pipe.
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Maintenance and repair services for equipment used in fracturing oil and gas wells to ensure proper functioning Monitoring and testing services for equipment used in fracturing oil and gas wells to ensure proper functioning
Wellheads used in land-based, oil and gas well drilling operations and component parts of wellheads used in land-based, oil and gas well drilling, namely, casing heads, casing spools, tubing heads, casing hangers, tubing hangers, tubing head adaptors, test plugs, wear bushings, running tools, secondary seals, chokes, and valves
Wellheads, namely, casing heads, casing spools, tubing heads, tees, crosses, tree caps, chokes, and valves; gate valves; and large bore valves used in oil well fracturing operations
Wellheads, namely, casing heads, casing spools, tubing heads, tree caps, chokes, and valves; gate valves; and large bore valves used in oil well fracturing operations
