Novel additive compositions and methods of improving injectivity of an aqueous composition into a disposal reservoir during a water disposal operation.
A method of controlling wax deposition within a fluid, the method comprising admixing an additive composition with the fluid, wherein the additive composition comprises one or more biosurfactants and one or more additional additives independently selected from (i) a sulfonic acid or salt thereof, (ii) a polymeric wax inhibitor and (iii) an alkoxylated alcohol and/or amine compound.
C10L 1/10 - Combustibles carbonés liquides contenant des additifs
C09K 8/524 - Compositions pour éviter, limiter ou éliminer les dépôts, p. ex. pour le nettoyage les dépôts organiques, p. ex. paraffines ou asphaltènes
C10L 1/196 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone dérivés de monomères contenant une liaison insaturée carbone-carbone et un groupe carboxyle ou leurs sels, leurs anhydrides ou leurs esters
C10L 1/198 - Composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
C10L 1/238 - Composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
Novel additive compositions and methods of improving injectivity of an aqueous composition into a disposal reservoir during a water disposal operation.
C02F 1/68 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par addition de substances spécifiées, pour améliorer l'eau potable, p. ex. par addition d'oligo-éléments
C02F 5/08 - Traitement de l'eau avec des produits chimiques complexants ou des agents solubilisants pour l'adoucissement, la prévention ou l'élimination de l'entartrage, p. ex. par addition d'agents séquestrants
C02F 103/10 - Nature de l'eau, des eaux résiduaires ou des eaux ou boues d'égout à traiter provenant de carrières ou d'activités minières
A method of controlling wax deposition within a fluid, the method including admixing an additive composition with the fluid, wherein the additive composition includes one or more biosurfactants and one or more additional additives independently selected from (i) a sulfonic acid or salt thereof, (ii) a polymeric wax inhibitor and (iii) an alkoxylated alcohol and/or amine compound.
C10L 1/238 - Composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
C10L 1/26 - Composés organiques contenant du phosphore
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo. The method include contacting the formation with a fluid (A) having a polymer (PP) which includes a pendent group which includes a moiety
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo. The method include contacting the formation with a fluid (A) having a polymer (PP) which includes a pendent group which includes a moiety
O—S═O (I)
wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
C09K 8/528 - Compositions pour éviter, limiter ou éliminer les dépôts, p. ex. pour le nettoyage les dépôts inorganiques, p. ex. sulfates ou carbonates
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/467 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits contenant des liants inorganiques, p. ex. ciment Portland contenant des additifs pour des utilisations spécifiques
E21B 21/06 - Dispositions pour traiter les fluides de forage à l'extérieur du trou de forage
7.
ADDITIVES AND METHODS, COMPOSITIONS AND USES RELATING THERETO
C09K 8/467 - Compositions de cimentation, p. ex. pour la cimentation des tubes dans les trous de forageCompositions de bouchage, p. ex. pour tuer des puits contenant des liants inorganiques, p. ex. ciment Portland contenant des additifs pour des utilisations spécifiques
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
03 - Produits cosmétiques et préparations de toilette; préparations pour blanchir, nettoyer, polir et abraser.
Produits et services
(1) Chemicals and chemical formulations for use in water treatment; chemicals and chemical formulations for use in the cleaning, handling, pumping, transfer and storage of polymers; chemicals and chemical formulations for use as mitigation agents; chemicals and chemical formulations for use in hard surface cleaning applications; chemicals and chemical formulations for use in dispersing hydrocarbons, including for dispersing gasoline, xylene, toluene, benzene, petroleum distillates, kerosene, diesel fuel, jet fuels, motor oil and crude oils; chemicals and chemical formulations for use as a paraffin dispersant; chemicals and chemical formulations for use as an emulsifier; chemicals and chemical formulations for use as a degreaser; chemicals and chemical formulations for use in tank cleaning, refinery cleaning, and industrial plant cleaning.
(2) Hard surface cleaner for use in industrial and institutional applications.
9.
COMPOSITIONS COMPRISING POLYMER, SCALE INHIBITOR AND QUATERNARY AMMONIUM COMPOUND, METHOD AND USES.
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations comprises: (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
C02F 5/08 - Traitement de l'eau avec des produits chimiques complexants ou des agents solubilisants pour l'adoucissement, la prévention ou l'élimination de l'entartrage, p. ex. par addition d'agents séquestrants
C09K 3/22 - Substances non couvertes ailleurs pour abattre la poussière ou pour l'absorber
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 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations includes (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
03 - Produits cosmétiques et préparations de toilette; préparations pour blanchir, nettoyer, polir et abraser.
Produits et services
Chemicals and chemical formulations for use in water treatment; chemicals and chemical formulations for use in the cleaning, handling, pumping, transfer and storage of polymers; chemicals and chemical formulations for use as mitigation agents; chemicals and chemical formulations for use in hard surface cleaning applications; chemicals and chemical formulations for use in dispersing hydrocarbons, including for dispersing gasoline, xylene, toluene, benzene, petroleum distillates, kerosene, diesel fuel, jet fuels, motor oil and crude oils; chemicals and chemical formulations for use as a paraffin dispersant; chemicals and chemical formulations for use as an emulsifier; chemicals and chemical formulations for use as a degreaser; chemicals and chemical formulations for use in tank cleaning, refinery cleaning, and industrial plant cleaning Hard surface cleaner for use in industrial and institutional applications
An aqueous formulation for slick water fracturing comprises: (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; (iii) a quaternary ammonium compound.
An aqueous formulation for slick water fracturing includes (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; and (iii) a quaternary ammonium compound.
C08J 3/05 - Production de solutions, dispersions, latex ou gel par d'autres procédés que ceux utilisant les techniques de polymérisation en solution, en émulsion ou en suspension dans un milieux aqueux à partir de polymères solides
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo ;- is-described. The method includecomprises contacting the formation with a fluid (A) havingcomprising a polymer (PP) which includes a pendent group which includes a moiety
O-S=0 (I) wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
A method of preparing a fracturing fluid (YY) is described. The method may comprise: (i) selecting an anionic surfactant (AS), for example an anionic sulphonate surfactant; (ii) contacting the anionic surfactant (AS) with a fracturing fluid (XX) or with a precursor of said fracturing fluid (XX), wherein fracturing fluid (XX) may incorporate a friction reducer formulation.
A method of preparing a fracturing fluid for hydraulic fracturing in unconventional reservoirs such as coal beds, sandstones, and shales. The method includes selecting an anionic surfactant, such as an anionic sulphonate surfactant; and contacting the anionic surfactant with a fracturing fluid or with a precursor of said fracturing fluid. The fracturing fluid may further include friction reducing polymers and a booster formulation that provides enhanced polymer performance for increased friction reduction as well as faster polymer dissolution in the fracturing fluid.
C09K 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
E21B 43/16 - Procédés de récupération assistée pour l'extraction d'hydrocarbures
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Polymer compositions used in the manufacture of industrial oilfield and agricultural goods; polymer compositions for use as friction reducers used in the manufacture of industrial oilfield and agricultural goods; water-based polymer compositions for use as friction reducers or viscosity enhancement used in the manufacture of industrial oilfield and agricultural goods; polymer compositions, including those in water-based form, for use in the process of fracturing in oil fields; polymer compositions for use as friction reducers in the treatment and management of water, and for use in agriculture; viscose (acrylamide polymer or copolymer) chemicals; polymers and polymeric additives for reducing the friction of liquids used in the manufacture of industrial oilfield and agricultural goods; polymers and polymeric additives for use as friction reducers and for enhancing viscosity used in the manufacture of industrial oilfield and agricultural goods
18.
Method and materials for hydraulic fracturing with delayed crosslinking of gelling agents
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
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
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
C09K 8/60 - Compositions pour activer la production en agissant sur la formation souterraine
Formulations for fracturing fluids that include (i) a fluid (D) including an oil phase in which the fluid (D) is an inverse emulsion including a water-soluble polymer (B) and said oil phase; and (ii) particles of a water-soluble polymer (C), which are different than water-soluble polymer (B), wherein the particles of polymer (C) are dispersed in said oil phase as solid discrete particles. The fluid (D) includes at least 15wt % polymer (B).
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo,is described. The method comprises contacting the formation with a fluid (A) comprising a polymer (PP) which includes a pendent group which includes a moiety wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
A method of treating a subterranean formation penetrated by a well-bore, for example to facilitate fracturing of the formation, comprises the steps of: (i) selecting a treatment fluid comprising a diverting agent (A) in a flaked form, for example guar gum in a flaked form. (ii) introducing the treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Thereafter, the formation may be fractured or re-fractured.
A method of treating a subterranean formation penetrated by a well-bore comprises the step of introducing a slurry or treatment fluid into the subterranean formation via the well-bore to plug a region of the well-bore, wherein said slurry or treatment fluid includes a diverting agent diverting agent which is suitably polylactic acid (PLA)and an additive (herein referred to as an "imbibition additive") which is suitably an acetoacetate.The diverting agent and imbibition additive interact such that the imbibition additive causes swelling of the diverting agent and/or increases the susceptibility of the diverting agent to degradation in use.
A method of treating a subterranean formation penetrated by a well-bore comprises: (i) preparing a slurry in a process which comprises the steps of: (a) preparing a pre-composition which comprises an oil and one or more organic polymers suspended in the oil; and (b) contacting the pre-composition with water and a diverting agent; or (ii) selecting a slurry prepared as described in step (i); and (iii) optionally contacting the slurry with an aqueous formulation thereby to prepare a treatment fluid; (iv) introducing the slurry or treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Preferred embodiments relate to aqueous, high density slurry formulations comprising a high concentration of diverting agent particulate, for example multi-sized polylactic acid (PLA).
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i) selecting recovered water; (ii) contacting said recovered water with a viscosifying agent, wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii) contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv) adjusting the pH to pH 6.5-8.8.
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
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 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/62 - Compositions pour la formation de crevasses ou de fractures
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i)selecting recovered water; (ii)contacting said recovered water with a viscosifying agent,wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii)contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv)adjusting the pH to pH 6.5-8.8.
A method of treating a subterranean formation penetrated by a well-bore, for example to facilitate fracturing of the formation, comprises the steps of: (i) selecting a treatment fluid comprising a diverting agent (A) in a flaked form, for example guar gum in a flaked form. (ii) introducing the treatment fluid into the subterranean formation via the well-bore to plug a region of the formation. Thereafter, the formation may be fractured or re-fractured.
C09K 8/516 - Compositions pour le plâtrage des parois de trous de forage, c.-à-d. compositions pour la consolidation temporaire des parois des trous de forage caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
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 8/92 - Compositions pour activer la production en agissant sur la formation souterraine caractérisées par leur forme ou par la forme de leurs composants, p. ex. matériaux encapsulés
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
C09K 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
A61K 8/81 - Cosmétiques ou préparations similaires pour la toilette caractérisés par la composition contenant des composés organiques macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons insaturées carbone-carbone
E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
30.
Method and materials for hydraulic fracturing with delayed crosslinking of gelling agents
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures
C09K 8/58 - 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
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
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
A method of preparing a fracturing fluid (YY) is described. The method may comprise: (i) selecting an anionic surfactant (AS), for example an anionic sulphonate surfactant; (ii) contacting the anionic surfactant (AS) with a fracturing fluid (XX) or with a precursor of said fracturing fluid (XX), wherein fracturing fluid (XX) may incorporate a friction reducer formulation.
High viscosity fracturing fluids for fracturing a subterranean formulation are prepared by: (i)selecting recovered water; (ii)contacting said recovered water with a viscosifying agent,wherein said viscosifying agent is selected from fenugreek gum, tara gum, locust bean gum, guar gum and derivatives of the aforesaid; (iii)contacting said recovered water with one or more other additives for example with a cross-linking agent (A) for cross-linking said viscosifying agent, wherein contact of said recovered water with cross-linking agent (A) takes place when the pH of said recovered water is less than pH 6.5; (iv)adjusting the pH to pH 6.5-8.8.
An aqueous formulation for slick water fracturing comprises: (i) a polymer (AA) which includes acrylamido repeat units and may be a polyacrylamide; (ii) water; (iii) a quaternary ammonium compound.
An aqueous formulation for use in slick water fracturing, water treatment, enhanced oil recovery, drilling, erosion control, dust abatement or mining flotation operations comprises: (i) one or more than one polymer (AA) which is a water-soluble polymer; (ii) water; (iii) one or more than one quaternary ammonium compound; and (iv) one or more than one scale inhibitor.
C02F 5/08 - Traitement de l'eau avec des produits chimiques complexants ou des agents solubilisants pour l'adoucissement, la prévention ou l'élimination de l'entartrage, p. ex. par addition d'agents séquestrants
C09K 3/22 - Substances non couvertes ailleurs pour abattre la poussière ou pour l'absorber
C09K 8/528 - Compositions pour éviter, limiter ou éliminer les dépôts, p. ex. pour le nettoyage les dépôts inorganiques, p. ex. sulfates ou carbonates
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 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
A non-aqueous slurry contains a non-aqueous liquid immiscible in water (such as a hydrocarbon based oil) having dispersed therein a crosslinking agent (such as a borate crosslinking agent) and an oil-wetting surface active material. The non-aqueous slurry further contains an organophilic clay. The non-aqueous slurry, when used in an aqueous fracturing fluid, provides crosslinking delay between the crosslinking agent and a hydratable polymer, such as guar or guar derivatives. The aqueous fracturing fluid provides an enhanced fracture network after being pumped into a well.
C08J 3/24 - Réticulation, p. ex. vulcanisation, de macromolécules
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 8/68 - Compositions à base d'eau ou de solvants polaires contenant des composés organiques
C09K 8/80 - Compositions pour renforcer les fractures, p. ex. compositions pour agents de soutènement utilisés pour maintenir les fractures ouvertes
37.
FORMULATIONS FOR USE IN FRACTURING FLUIDS AND METHODS THEREOF
Formulations for fracturing fluids are prepared by mixing a granulated water-soluble friction reducing polymer with an invert polymer emulsion friction reducing formulation optionally in the presence of an organophilic clay, without the need for specialized field equipment. The mixture can be dosed into water to produce a fracturing fluid which is found to be technically highly advantageous and cost-effective.
A61K 8/81 - Cosmétiques ou préparations similaires pour la toilette caractérisés par la composition contenant des composés organiques macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons insaturées carbone-carbone
E21B 43/00 - Procédés ou dispositifs pour l'extraction de pétrole, de gaz, d'eau ou de matériaux solubles ou fusibles ou d'une suspension de matières minérales à partir de puits
38.
A METHOD FOR TREATING A SUBTERRANEAN FORMATION WITH A FLUID COMPRISING A CO-POLYMER OF ACRYLAMIDO-METHYL-PROPANE SULFONATE AND ACRYLAMIDE
A method of treating a subterranean formation, for example a subterranean formation susceptible to formation of a undesirable gel-like goo,is described. The method comprises contacting the formation with a fluid (A) comprising a polymer (PP) which includes a pendent group which includes a moiety wherein the sulphur atom of the moiety is covalently bonded, optionally via a linking atom or group, to the backbone of the polymer.
