摘要:
A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.
摘要:
A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state; a plurality of proppant particles disposed in the superabsorbent polymer; an additive comprising a surfactant, a viscose polymer, or a combination thereof, and a fluid to expand the superabsorbent polymer into the expanded state. A process for disposing a plurality of proppant particles in a fracture comprises: disposing a hydraulic fracturing composition in a downhole environment; forming a fracture; disposing the hydraulic fracturing composition in the fracture; breaking the superabsorbent polymer after forming the fracture; and releasing the plurality of proppant particles from superabsorbent polymer. The process also comprises injecting a proppant-free fluid and a proppant-containing fluid in an alternating order into a subterranean formation.
摘要:
Disclosed herein is a fracturing fluid comprising a carrier fluid; a polymer that is soluble in the carrier fluid; the polymer being a synthetic polymer, wherein the synthetic polymer comprises a labile group that is operative to facilitate decomposition of the synthetic polymer upon activation of the labile group; the synthetic polymer being operative to increase the viscosity of the carrier fluid to about 5 to about 50 centipoise; the fracturing fluid being operative to reduce friction during a downhole fracturing operation and to transport a proppant during the downhole fracturing operation; and an oxidizing agent. A method for treating a hydrocarbon-bearing formation is also disclosed herein.
摘要:
Polyboronic compounds and methods of making them are provided. The polyboronic compounds are useful as crosslinking agents. The polyboronic compounds are produced by contacting a polymeric amine with a trialkylborate in the presence of a solvent so that the resulting molecule has more than one B—N bond.
摘要:
A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state and configured to break in response to a breaking condition; a plurality of proppant particles disposed in the superabsorbent polymer prior to release of the plurality of proppant particles from the superabsorbent polymer in response to breaking the superabsorbent polymer; and a fluid to expand the superabsorbent polymer into the expanded state. The hydraulic fracturing composition can be made by contacting a superabsorbent polymer with a fluid to expand the superabsorbent polymer into an expanded state; and disposing a plurality of proppant particles in the superabsorbent polymer to make the hydraulic fracturing composition. A process for disposing a plurality of proppant particles in a fracture comprises: disposing a hydraulic fracturing composition in a downhole environment; forming a fracture in the downhole environment; disposing the hydraulic fracturing composition in the fracture; breaking the superabsorbent polymer after forming the fracture; and releasing the plurality of proppant particles from superabsorbent polymer to dispose the plurality of proppant particles in the fracture.
摘要:
A method of fracturing a subterranean formation penetrated by a well comprises: forming a fracturing composition comprising a carrier fluid; and a superabsorbent polymer component comprising one or more of the following: a first composite of a proppant and a first superabsorbent polymer in an unhydrated form, the first superabsorbent polymer being at least partially embedded in a void area of the proppant; a coated superabsorbent polymer; a superabsorbent material having a three-dimensional network; or a second composite of a second superabsorbent polymer and a slow-release breaker; and pumping the hydraulic fracturing composition into the subterranean formation to create or enlarge a fracture.
摘要:
The present invention relates to a method of slickwater hydraulic fracturing of a subterranean formation comprising introducing into a wellbore an aqueous fracturing fluid comprising a nonionic polymer and polyethylene oxide.
摘要:
The production of hydrocarbons from a subterranean formation is enhanced by use of a well treatment fluid which contains a carboxylated guar which may be prepared by reacting a guar source and a derivatizing agent of the formula X(CH2)nCOOH or alkali salts thereof, wherein X is selected from the group consisting of —OSO2CH3; —OSO2C2H5; —OTs, —Br, and —I and n is between from 1 to 4. The intrinsic viscosity of the carboxylated guar in 2% KCl at 27° C. is at least 750 mL/g and the degree of substitution (DS) of the carboxylated guar is typically between from about 0.02 to about 0.15.
摘要:
Fracturing fluid compositions and methods of fracturing subterranean formations using polyboronic compounds as crosslinking agents are provided. The compositions and methods of the present invention allow for lower polymer loadings because achieving higher fracturing fluid viscosities can be achieved using less polymer than in traditional crosslinked systems.
摘要:
A hydraulic fracturing composition includes: a superabsorbent polymer in an expanded state and configured to break in response to a breaking condition; a plurality of proppant particles disposed in the superabsorbent polymer prior to release of the plurality of proppant particles from the superabsorbent polymer in response to breaking the superabsorbent polymer; and a fluid to expand the superabsorbent polymer into the expanded state. The hydraulic fracturing composition can be made by contacting a superabsorbent polymer with a fluid to expand the superabsorbent polymer into an expanded state; and disposing a plurality of proppant particles in the superabsorbent polymer to make the hydraulic fracturing composition.