Abstract:
Boronated biopolymer crosslinking agents useful in producing viscosified treatment fluids that include an aqueous fluid, a base polymer, and the boronated biopolymer crosslinking agent, wherein the boronated biopolymer crosslinking agent comprises a biopolymer derivatized with a boronic acid, a boronate ester, or both. Such viscosified treatment fluids may be useful in fracturing operations, gravel packing operations, drilling operations, and the like.
Abstract:
A method of servicing a wellbore in a subterranean formation comprising placing a wellbore servicing fluid in the wellbore and/or subterranean formation, wherein the wellbore servicing fluid comprises a viscosifying polymeric material, a breaking agent comprising an inorganic peroxide of a divalent metal M(II) characterized by the general formula MO2, and a break rate controlling additive comprising a M(II) soluble salt, a M(II) precipitating salt, a M(II) surface precipitating salt, a M(II) solution precipitating salt, or combinations thereof, allowing the wellbore servicing fluid to break, and flowing back to the surface at least a portion of the broken wellbore servicing fluid.
Abstract:
A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising an amino polyether multicarboxylic acid chelating agent and/or an amino polyether multicarboxylic acid chelating agent precursor, and an aqueous base fluid, and contacting the wellbore servicing fluid with scale deposits on a surface in the wellbore and/or subterranean formation. A method of servicing a wellbore in a subterranean formation comprising preparing a wellbore servicing fluid comprising an amino polyether multicarboxylic chelating agent precursor and an aqueous base fluid, and contacting the wellbore servicing fluid with scale deposits on a surface in the wellbore and/or subterranean formation. A scale-removing wellbore servicing fluid comprising an amino polyether multicarboxylic acid chelating agent and/or an amino polyether multicarboxylic acid chelating agent precursor, and an aqueous base fluid.
Abstract:
A method of servicing a wellbore in a subterranean formation comprising placing a first wellbore servicing fluid comprising a diverter material into a wellbore, allowing the diverter material to form a diverter plug at a first location in the wellbore or subterranean formation, diverting the flow of a second wellbore servicing fluid to a second location in the wellbore or subterranean formation, and contacting the diverter plug with a third wellbore servicing fluid comprising a degradation accelerator and a phase transfer catalyst under conditions sufficient to form one or more degradation products. A method comprising contacting a diverter material with a phase transfer catalyst under conditions suitable to produce a composite material placing downhole a first wellbore servicing fluid comprising the composite material, and placing downhole a second wellbore servicing fluid comprising a degradation accelerator.
Abstract:
A method of servicing a wellbore comprising preparing a composition comprising a calcium aluminate cement, water, and a fluid loss additive wherein the fluid loss additive comprises an acid gelling polymer, placing the composition in the wellbore, and allowing the composition to set. A method of servicing a wellbore comprising placing into a wellbore having a bottom hole static temperature of greater than about 50 °F [about 10°C] and/or a pH of from about 3 to about 9 a cement slurry comprising a calcium aluminate cement having an aluminum oxide content of greater than about 60 wt.% based on the total weight of the calcium aluminate cement and an acid-gelling polymer wherein the cement slurry has a fluid loss at 10 cc/10 min. to about 600 cc/30 min.
Abstract:
A method of using a swellable polymer downhole may include introducing a first treatment fluid comprising a first aqueous fluid, a salt with a multivalent cation, and the swellable polymer into a wellbore penetrating a subterranean formation; placing the swellable polymer in a portion of the subterranean formation; contacting the swellable polymer in the portion of the subterranean formation with a second treatment fluid comprising a second aqueous fluid and at least one selected from the group consisting of a precipitating agent, a chelating agent, and a combination thereof; and swelling the swellable polymer in the portion of the subterranean formation, thereby reducing fluid flow through the portion of the subterranean formation.
Abstract:
Embodiments herein include a method comprising providing a self-sealing cement slurry comprising an aqueous base fluid, a cementitious material, and a vulcanized oil and water swellable particulate composite, wherein the vulcanized oil and water swellable particulate composite comprises an elastomer, a crosslinked water swellable superabsorbent polymer, and a hydrophobically modified water-soluble polymer; introducing the self-sealing cement slurry into a subterranean formation; and setting the self-sealing cement slurry, wherein the vulcanized oil and water swellable particulate composite is capable of swelling in the presence of a non-aqueous fluid and an aqueous fluid to reduce the permeability of fluid flowpaths in the set self-sealing cement slurry upon loss of structural integrity.
Abstract:
Clay-based retarders may be useful in delaying the gel time of a gellable treatment fluid and, consequently, subterranean operations. For example, a method may involve providing a gellable treatment fluid comprising: an aqueous base fluid; a base polymer comprising an acrylamide monomer unit; a polymeric organic crosslinking agent comprising a crosslinkable polymer selected from the group consisting of polyethyleneimine, polyvinylamine, chitosan, any derivative thereof, any salt thereof, and any combination thereof; and a clay-based gel retarder; introducing the gellable treatment fluid into a wellbore penetrating a subterranean formation; and forming a gel with the gellable treatment fluid in at least a portion of the wellbore, at least a portion of the subterranean formation, or both. In some instances, producing the gellable treatment fluid may involve not pre-hydrating the clay-based gel retarder. In some instances, the gellable treatment fluid may not be thixotropic or pseudoplastic before introduction into the wellbore.
Abstract:
A method of servicing a wellbore in a subterranean formation comprising placing a liquid additive composition comprising (i) a liquid non-aqueous continuous phase; (ii) a discontinuous phase comprising a water-soluble polymeric additive; (iii) emulsion-stabilizing and water-wetting surfactants and (iv) a discontinuous phase release control agent. A method of servicing a wellbore comprising placing a wellbore servicing fluid comprising (i) a cementitious material and (ii) a liquid additive composition comprising a fluid loss additive and a discontinuous phase release control agent into the wellbore and/or subterranean formation; and allowing the cement to set. A wellbore servicing composition comprising a cement slurry and a liquid additive composition comprising (i) an acid gelling polymer (ii) an invert emulsion; (iii) a water-wetting surfactant; (iv) an emulsion-stabilizing surfactant; and (v) a discontinuous phase control release agent wherein the acid-gelling polymer is disposed within the invert emulsion.
Abstract:
Additives are used in treatment fluids in subterranean operations to prevent fluid loss within a subterranean formation. A method includes providing a treatment fluid that includes a viscosifying polymer and a solid-liquid phase transition temperature modifier and placing the treatment fluid in a subterranean formation penetrated by a wellbore, wherein the solid-liquid phase temperature modifier is added in an amount to modulate the gelling temperature of the viscosifying polymer to a target temperature.