Abstract: Methods for treating fluids used in the production and/or transport of petroleum products and natural gas, and methods for the removal of acidic gases encountered in fluids used and encountered in such operations are provided. In one embodiment, the methods include introducing a treatment fluid including a polymeric swellable acid scavenger that includes at least one polymeric composition into a wellbore penetrating at least a portion of a subterranean formation in which an acidic gas, an acid-containing fluid, or both, are present.

Abstract: Methods and compositions for dissolving a filter cake. An example method introduces a treatment fluid into an annulus of a wellbore penetrating a subterranean formation. The treatment fluid includes an aqueous fluid and a phosphate. The wellbore has a wall that is at least partially coated with a filter cake. The method further removes at least a portion of the filter cake from the wall.

Abstract: Provided is a method for mitigating a lost circulation zone. The method may include providing a lost circulation treatment composition that may include an acid responsive polymer that may include at least one monomer, at least one comonomer, and at least one crosslinker; a carbonate-based solvent; and a carrier fluid that may include water. The method may also include introducing the lost circulation treatment composition into a wellbore within a subterranean formation, wherein the subterranean formation may include the lost circulation zone; placing the lost circulation treatment composition into the lost circulation zone, hydrolyzing the carbonate-based solvent to generate carbon dioxide, and causing the swelling (change of shape) of acid responsive polymer to mitigate the losses.

Abstract: Methods for treating fluids used in the production and/or transport of petroleum products and natural gas, and methods for the removal of acidic gases encountered in fluids used and encountered in such operations are provided. In one embodiment, the methods include introducing a treatment fluid including a polymeric swellable acid scavenger that includes at least one polymeric composition into a wellbore penetrating at least a portion of a subterranean formation in which an acidic gas, an acid-containing fluid, or both, are present.

Abstract: Described herein are fluids used to inhibit swelling of clay or shale formations, where the fluids include a drilling fluid and a clay stabilizer that include a potassium salt with a plurality of cations and are injectable into a wellbore.

Abstract: A method is disclosed for mitigating a lost circulation zone. The method may include providing a lost circulation treatment composition that may include an acid responsive polymer that may include at least one monomer, at least one comonomer, and at least one crosslinker; a carbonate-based solvent; and a carrier fluid that may include water. The method may also include introducing the lost circulation treatment composition into a wellbore within a subterranean formation, wherein the subterranean formation may include the lost circulation zone; placing the lost circulation treatment composition into the lost circulation zone, and hydrolyzing the carbonate-based solvent to generate carbon dioxide.

Abstract: Described herein are fluids used to inhibit swelling of clay or shale formations, where the fluids include a drilling fluid and a clay stabilizer that include a potassium salt with a plurality of cations and are injectable into a wellbore.

Abstract: Methods for producing a swellable packer in a downhole environment are provided. A method includes introducing a treatment fluid containing a polymeric composition into a wellbore within the downhole environment and exposing the polymeric composition to an acid to produce a swollen polymeric material within the downhole environment. The polymeric composition contains a reaction product of at least one or more monomers, one or more comonomers, and one or more crosslinkers. The acid can be in situ formed from an acid precursor introduced into the downhole environment.

Abstract: A method for bridging a lost circulation zone comprising: providing a lost circulation composition comprising a phosphate ester based lost circulation material and a carrier fluid; introducing the lost circulation composition into a wellbore within a subterranean formation, wherein the subterranean formation comprises a lost circulation zone; and placing the lost circulation composition into the lost circulation zone.

Abstract: Methods of introducing a treatment fluid into a subterranean formation having a filtercake deposited thereon, wherein the treatment fluid comprises a base fluid and an inclusion complex comprising a cyclodextrin compound and an acid precursor ester, and wherein the cyclodextrin compound delays hydrolysis of the acid precursor ester; contacting the treatment fluid with the filtercake; and hydrolyzing the acid precursor ester, thereby removing at least a portion of the filtercake.

Abstract: Compositions, methods, and systems for mitigating annular pressure buildup in a wellbore. A method comprises introducing a spacer fluid into an annulus of the wellbore, wherein the spacer fluid comprises an aqueous base fluid, an acid swellable polymer, and a hydrolysable ester. The method further comprises allowing or causing to allow at least a portion of the spacer fluid to remain in the annulus; and allowing or causing to allow a temperature to increase in the annulus to the temperature sufficient to hydrolyze the hydrolysable ester; wherein hydrolysis of the hydrolysable ester produces an acid; wherein the acid reacts with the acid swellable polymer to produce a salt; and wherein the produced salt has a thermal expansion coefficient less than that of the aqueous base fluid.

Abstract: Included are compositions, methods, and systems for mitigating annular pressure buildup in a wellbore. An example method comprises introducing a spacer fluid into an annulus of the wellbore, wherein the spacer fluid comprises an aqueous base fluid, an acid swellable polymer, and a hydrolysable ester. The method further comprises allowing or causing to allow at least a portion of the spacer fluid to remain in the annulus; and allowing or causing to allow a temperature to increase in the annulus to the temperature sufficient to hydrolyze the hydrolysable ester; wherein hydrolysis of the hydrolysable ester produces an acid; wherein the acid reacts with the acid swellable polymer to produce a salt; and wherein the produced salt has a thermal expansion coefficient less than that of the aqueous base fluid.

Abstract: Methods for producing a swellable packer in a downhole environment are provided. A method includes introducing a treatment fluid containing a polymeric composition into a wellbore within the downhole environment and exposing the polymeric composition to an acid to produce a swollen polymeric material within the downhole environment. The polymeric composition contains a reaction product of at least one or more monomers, one or more comonomers, and one or more crosslinkers. The acid can be in situ formed from an acid precursor introduced into the downhole environment.

Abstract: A method of treating a subterranean formation includes introducing cement composition into a wellbore, the cement composition including a pumpable slurry of cement comprising a copolymer capable of swelling in a gaseous environment. A composition includes a pumpable slurry of cement comprising a copolymer capable of swelling in a gaseous environment.

Abstract: Methods of introducing a treatment fluid into a subterranean formation having a filtercake deposited thereon, wherein the treatment fluid comprises a base fluid and an inclusion complex comprising a cyclodextrin compound and an acid precursor ester, and wherein the cyclodextrin compound delays hydrolysis of the acid precursor ester; contacting the treatment fluid with the filtercake; and hydrolyzing the acid precursor ester, thereby removing at least a portion of the filtercake.

Abstract: Methods of introducing a treatment fluid into a subterranean formation having a filtercake deposited thereon, wherein the treatment fluid comprises a base fluid and an inclusion complex comprising a cyclodextrin compound and an acid precursor ester, and wherein the cyclodextrin compound delays hydrolysis of the acid precursor ester; contacting the treatment fluid with the filtercake; and hydrolyzing the acid precursor ester, thereby removing at least a portion of the filtercake.

Abstract: Methods of introducing a treatment fluid into a subterranean formation having a filtercake deposited thereon, wherein the treatment fluid comprises a base fluid and an inclusion complex comprising a cyclodextrin compound and an acid precursor ester, and wherein the cyclodextrin compound delays hydrolysis of the acid precursor ester; contacting the treatment fluid with the filtercake; and hydrolyzing the acid precursor ester, thereby removing at least a portion of the filtercake.