Polymer Derived From Acrylic Acid Monomer Or Derivative Patents (Class 507/224)
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Publication number: 20100160187Abstract: Methods and compositions for stabilizing portions of a subterranean formation that comprise unconsolidated particulates are provided. In one embodiment, a method of treating a subterranean formation includes introducing a pre-flush fluid into a subterranean formation comprising unconsolidated particulates; introducing a foamed consolidation fluid comprising an aqueous base fluid, an emulsified resin, a hardening agent, a silane coupling agent, and a surfactant into the subterranean formation subsequent to the pre-flush fluid; wherein the emulsified resin is emulsified prior to being introduced into the aqueous base fluid; and allowing the resin to cure to at least partially consolidate the unconsolidated particulates.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Inventors: Philip D. Nguyen, Richard D. Rickman, Ronald G. Dusterhoft
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Publication number: 20100147515Abstract: A method and apparatus for treating a subterranean formation with a fluid, including forming a fluid including a organosilane and a particulate and introducing the fluid into a subterranean formation with exposed surfaces, wherein the organosilane modifies the particulate or surfaces or both. Also, a method and apparatus for treating a subterranean formation with a fluid, including forming a fluid including an organosilane and introducing the fluid into a subterranean formation with exposed surfaces, wherein the organosilane modifies the surfaces with a first functional group.Type: ApplicationFiled: December 15, 2009Publication date: June 17, 2010Inventors: Trevor Lloyd Hughes, Michael J. Fuller, Jill F. Geddes
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Composition of base fluid and polymeric dispersing agent-absorbed polymer-coated colloidal particles
Patent number: 7727939Abstract: A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d50) of less than two microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.Type: GrantFiled: December 17, 2004Date of Patent: June 1, 2010Assignee: M-I L.L.C.Inventors: Andrew J Bradbury, Christopher A. Sawdon, Sonny Clary, William M Reid, Tom Heinz -
Patent number: 7723271Abstract: A method for improving bonding and sealing in a well, comprising providing a wellbore, providing a pipe, coating an outside surface of the pipe with an adhesive thermoplastic resin, running the coated pipe into the wellbore, and causing the temperature of said wellbore to increase to a temperature greater than a melting temperature of said adhesive thermoplastic resin.Type: GrantFiled: December 23, 2009Date of Patent: May 25, 2010Assignee: Shell Oil CompanyInventor: Kenneth Michael Cowan
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Publication number: 20100105580Abstract: This invention provides polymers having side chain groups selected from at least one of the following: a) a group comprising an ester of a polycarboxylic acid or polycarboxylate salt, an aminoalkylphosphate ester, or an ammoniumalkylphosphate ester; b) a group comprising an alkanolamino group, a fatty quaternary ammonium moiety, a heterocyclic ring moiety having at least five members, which ring has at least one nitrogen atom, said ring further comprising either unsaturation or at least one additional heteroatom, or both a fatty quaternary ammonium moiety and a heterocyclic ring moiety having at least five members, which ring has at least one nitrogen atom, said ring further comprising either unsaturation or at least one additional heteroatom; c) a group comprising an alkylamino ethoxylate or an alkylamino propoxylate; d) a group comprising a trialkylhexahydrotriazine moiety; e) a group comprising a fatty alkyl ester; and f) a group comprising (i) an ester of a polycarboxylic acid or polycarboxylate salt, anType: ApplicationFiled: September 17, 2009Publication date: April 29, 2010Applicant: BJ SERVICES COMPANYInventor: Harold L. Becker
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Publication number: 20100099585Abstract: Embodiments disclosed herein related to an aqueous based well bore fluid that includes at least one ionized polymer, at least one non-ionic polymer, a non-magnetic weighting agent, and an aqueous base fluid.Type: ApplicationFiled: March 20, 2008Publication date: April 22, 2010Inventor: Ahmadi Tehrani
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Patent number: 7696133Abstract: Disclosed is a composition comprising a chemical formulation useful for creating geosynthetic composites in-situ, which includes a reactive ester having at least one carbon-carbon double bond, preferably a vinyl ester of a C9 to C11 versatic acid or vinyl ester of a long chain fatty acid, or a combination thereof, at least one unsaturated thermoplastic elastomer soluble in the reactive ester; at least one di- or tri-functional acrylate or methacrylate monomer. The formulation may further include a non-aqueous drilling fluid.Type: GrantFiled: June 2, 2005Date of Patent: April 13, 2010Assignee: Shell Oil CompanyInventor: Kenneth Michael Cowan
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Publication number: 20100081586Abstract: The disclosed compositions and methods utilize hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups. The polymers may exhibit physical association in solution at a specific temperature so as to provide a significant increase in viscosity at the specific temperature. The viscosity of such systems is substantially increased by the further inclusion of one or more hydrophilic components that may exhibit physical association in solution at one or more temperature trigger points and also associate with the one or more hydrophilic polymers modified by the incorporation of one or more hydrophilic side groups.Type: ApplicationFiled: September 23, 2009Publication date: April 1, 2010Applicant: BP CORPORATION NORTH AMERICA INC.Inventors: Philip S. Smith, Dale L. Handlin, JR.
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Publication number: 20100081584Abstract: Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a treatment fluid comprising a styrene-acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand.Type: ApplicationFiled: December 3, 2009Publication date: April 1, 2010Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventor: Gregory P. Perez
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Publication number: 20100075872Abstract: The present invention relates to methods and compositions for carrier fluids comprising water-absorbent fibers. One embodiment of the present invention provides a method of treating a portion of a subterranean formation, comprising providing a slurry wherein the slurry comprises a servicing fluid, particulates, and a degradable, water-absorbent material wherein the degradable, water-absorbent material acts to help keep the particulates from settling out of the slurry; and, introducing the slurry into the portion of the subterranean formation. Another embodiment of the present invention provides a slurry suitable for use in subterranean operations comprising a servicing fluid, particulates, and a degradable, water-absorbent material wherein the degradable, water-absorbent material acts to help keep the particulates from settling out of the slurry.Type: ApplicationFiled: November 30, 2009Publication date: March 25, 2010Inventor: Philip D. Nguyen
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Publication number: 20100065271Abstract: Disclosed herein are free flowing coated particles and low temperature methods of making same. Each particle has a curable coating disposed upon a substrate. The substrate is a particulate substrate including an inorganic material, a particulate substrate including an organic material, a composite substantially homogeneous formed particle including a first portion of an at least partly cured binder and filler particles, or a hybrid particle having an inorganic particle as a core and a composite coating including at least partially cured resin and filler. The curable coating includes a continuous phase including a curable liquid resin and reactive powder particles embedded or adhered to the continuous phase. The reactive powder particles typically include one or more of a resole phenolic-formaldehyde resin, a novolak phenolic-formaldehyde resin, a polyester resin, an acrylic polymer resin, a urethane resin or an epoxy resin.Type: ApplicationFiled: October 26, 2009Publication date: March 18, 2010Inventors: Avis Lloyd McCRARY, Robert Ray McDANIEL, John W. GREEN
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Publication number: 20100048432Abstract: A surfactant blend of a low molecular weight surfactant and a high molecular weight surfactant to be used in an aqueous flooding. The surfactant blend may be neutralized with an alkali or alkaline agent. The surfactant blend may be mixed with a polymer. Surfactant blends of the present invention increase oil recoveries from oil reservoirs.Type: ApplicationFiled: May 26, 2009Publication date: February 25, 2010Inventors: Michael T. Costello, Charles F. Irwin, Qinggao Ma, Naureen Stone
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Patent number: 7665523Abstract: Of the many compositions and methods provided herein, one method includes a method comprising: contacting tar resident in a well bore with a treatment fluid comprising a styrene-acrylate polymer; and allowing the styrene-acrylate polymer to interact with the tar to at least partially reduce the tendency of the tar to adhere to a surface. Another method provided herein includes a method for treating tar sand comprising: contacting the tar sand with a treatment fluid comprising an aqueous fluid and a styrene-acrylate polymer, the tar sand comprising tar and sand; and allowing the styrene-acrylate polymers to interact with the tar to at least partially separate the tar from the sand.Type: GrantFiled: October 16, 2007Date of Patent: February 23, 2010Assignee: Halliburton Energy Services, Inc.Inventor: Gregory P. Perez
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Patent number: 7651981Abstract: A process for recovering materials from a subterranean formation, for example in enhanced oil recovery, comprises: (A) (a) (i) selecting a first polymeric material having a repeat unit of formula (A) wherein A and B are the same or different, are selected from optionally-substituted aromatic and heteroaromatic groups and at least one comprises a relatively polar atom or group and R1 and R2 independently comprise relatively non-polar atoms or groups; or (ii) selecting a first polymeric material prepared or preparable by providing a compound of general formula (B) wherein A, B, R1 and R2 are as described above, in an aqueous solvent and causing the groups C?C in said compound to react with one another to form said first polymeric material; (b) selecting a second polymeric material which includes a functional group which is able to react in the presence of said first polymeric material to form a third polymeric material; (c) causing the formation of said third polymeric material by a reaction involving said firsType: GrantFiled: March 28, 2003Date of Patent: January 26, 2010Assignees: Advanced Gel Technology Limited, Aubin LimitedInventors: Donald Eagland, Nicholas John Crowther, James Murray, Austin Tobin
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Publication number: 20100016183Abstract: The present invention includes well treatment fluids and methods utilizing nano-particles and, in certain embodiments, to sealant compositions and methods utilizing nano-particles. The nano-particles may be incorporated into the sealant composition in different forms, including as discrete nano-particles, encapsulated nano-particles, agglomerated nano-particles, or in a liquid suspension.Type: ApplicationFiled: September 27, 2009Publication date: January 21, 2010Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Craig W. Roddy, Ricky L. Covington
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Publication number: 20100004145Abstract: A fluid loss pill that includes a crosslinked polymer gel, a brine, and solid salt particles disposed in said gel is described. Further, a method for reducing fluid loss that includes pumping a selected amount of a fluid loss pill into a wellbore leading to an oil-condensate-, or gas-producing formation, the fluid loss pill including a crosslinked polymer gel, a brine, and solid salt particles disposed in said gel is described.Type: ApplicationFiled: June 29, 2006Publication date: January 7, 2010Applicant: M-I LLCInventors: Robert L. Horton, Bethicia B. Prasek
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Publication number: 20090298721Abstract: A variety of methods and compositions are disclosed, including, in one embodiment, a method that comprises: introducing a treatment fluid into a subterranean formation, wherein the treatment fluid comprises water and a concentrated polymer composition comprising a complexing agent and a friction reducing polymer. Also disclosed is a method that comprises combining at least water and a concentrated polymer composition to form a treatment fluid, wherein the concentrated polymer composition comprises a complexing agent and a friction reducing polymer; and introducing the treatment fluid into a subterranean formation. Also disclosed is a concentrated polymer composition comprising: a friction reducing polymer in an amount of about 15% to about 60% by weight of the composition; and a complexing agent.Type: ApplicationFiled: July 6, 2009Publication date: December 3, 2009Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ian D. Robb, Thomas D. Welton, Jason Bryant, Michael L. Carter
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Patent number: 7622427Abstract: A completion and workover fluid composition comprising, water and at least one rheology modifier and/or fluid loss control agent, and at least one other ingredient selected from the group consisting of inorganic salts, shale inhibitors, corrosion inhibitor, biocide, defoamers and finely divided solids particles (e.g., bentonite, attapulgite, sepiolite, calcium carbonate, etc.), depending upon the desired attributes, wherein the rheology modifier and/or the fluid loss control agent is an ethoxylated raw cotton linters or a modified ethoxylated raw cotton linters. The ethoxylated raw cotton linters provides comparable or better rheology and viscosity properties compared to high molecular weight commercial HECs made from purified cotton linters. These ethoxylated raw cotton linters derivatives are suitable for applications in oil-well servicing fluids, particularly to enhance functional properties of completion and workover fluids used during oil-well drilling operations.Type: GrantFiled: February 21, 2007Date of Patent: November 24, 2009Assignee: Hercules IncorporatedInventors: Arjun C. Sau, Mohand Melbouci
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Publication number: 20090275489Abstract: Method and agent for reducing water production from oil and gas wells. The agent comprises polymer, cross-linked particles which are stable in water-free solvents. The particles are manufactured in an oil-in-oil emulsion and are cross-linked with at least one water-stable cross-liner and at least one water-labile cross-linker. The water-labile cross-linker is chosen so that when it is opened or broken in a reaction with water a hydrophilic seat is formed which increases the particle's ability to swell in water. The particles furthermore comprise a controlled amount of an immobilized chemical compound which by means of said reaction between water and reactive groups in the polymer skeleton, become able to form chemical bonds to another particle, to another reactive seat in the same particle or to another compounds thereby increasing the agent's stability in the formation.Type: ApplicationFiled: April 26, 2007Publication date: November 5, 2009Applicant: WELLCEM INNOVATION ASInventors: Lars Kilaas, Einar Dahl-Jörgensen
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Publication number: 20090264324Abstract: This invention is directed to a composition comprising crosslinked expandable polymeric microparticles comprising structured polymers having labile crosslinks or having a labile core and non-labile crosslinks. The starting configuration of the structured polymers constrains the microparticle to an unexpanded volume average particle size diameter of from about 0.05 to about 5,000 microns. Labile crosslinks or the labile core of the structured polymers are subject to degradation which results expansion of the microparticle. The invention is further directed to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.Type: ApplicationFiled: April 20, 2009Publication date: October 22, 2009Inventors: Pious Kurian, Kin-Tai Chang
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Publication number: 20090264322Abstract: This invention is directed to a composition comprising expandable polymeric microparticles comprising hydrophobic polymers having a backbone with labile pendant groups, the microparticles having an unexpanded volume average particle size diameter of from about 0.05 to about 5,000 microns. Labile pendant groups on the backbone are subject to hydrolysis under a change in environmental conditions that results in expansion of the microparticle. The invention is further directed to the use of the composition for modifying the permeability of subterranean formations and increasing the mobilization and/or recovery rate of hydrocarbon fluids present in the formations.Type: ApplicationFiled: April 20, 2009Publication date: October 22, 2009Inventors: John D. Morris, Kin-Tai Chang
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Publication number: 20090258801Abstract: Provided herein are methods and compositions for generating acids for use downhole, for example, to break fluid-loss control pills. The delayed-release acid breakers of the present invention comprise orthoesters and/or poly(orthoesters).Type: ApplicationFiled: June 22, 2009Publication date: October 15, 2009Inventors: Rajesh K. Saini, Karen Savery, Bradley L. Todd
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Publication number: 20090233819Abstract: A method of treating a sandstone-containing formation penetrated by a wellbore is carried out by forming a treatment fluid comprising an aqueous fluid containing a hydrogen fluoride source and an amorphous silica precipitation inhibitor. The treatment fluid is introduced into the formation through the wellbore at a pressure below the fracture pressure of the formation to facilitate dissolution of formation materials, optionally as a single stage. The amorphous silica inhibitor may be a polycarboxylate and/or polycarboxylic acid, an organosilane or a phosphonate compound. The amorphous silica inhibitor may be capable of inhibiting precipitation of amorphous silica so that the treatment fluid contains at least about 500 ppm of silicon after at least about 100 minutes subsequent to the treatment fluid being introduced into the formation.Type: ApplicationFiled: March 11, 2008Publication date: September 17, 2009Inventors: Michael J. Fuller, Isabelle Couillet, Ryan Hartman
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Patent number: 7589049Abstract: A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d50) of less than two microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.Type: GrantFiled: September 26, 2005Date of Patent: September 15, 2009Assignee: M-I L.L.C.Inventors: Andrew J. Bradbury, Christopher A. Sawdon, Sonny Clary, William M. Reid, Tom Heinz
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Patent number: 7585817Abstract: Compositions comprise nonionic fluorinated polymeric surfactants and solvent. The solvent comprises: at least one of a polyol or polyol ether, wherein the polyol and polyol ether have from 2 to 25 carbon atoms; and at least one monohydroxy alcohol, ether, or ketone having from 1 to 4 carbon atoms, or a mixture thereof, wherein the solvent is capable of at least one of solubilizing or displacing brine or condensate in the hydrocarbon-bearing clastic formation. Embodiments of the compositions are useful in recovery of hydrocarbons from hydrocarbon-bearing clastic formations that contain brine and/or condensate.Type: GrantFiled: August 22, 2007Date of Patent: September 8, 2009Assignees: Board of Regents, The University of Texas System, 3M Innovative Properties CompanyInventors: Gary A. Pope, Jimmie R. Baran, Jr.
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Patent number: 7579302Abstract: Embodiments relate to improving the performance of anionic friction reducing polymers in water containing multivalent ions. Exemplary embodiments relate to methods of improving the performance of anionic friction reducing polymers in a subterranean treatment, wherein the method comprises adding a complexing agent to water comprising multivalent ions. The method comprises adding the anionic friction reducing polymer to the water comprising the multivalent ions, wherein the anionic friction reducing polymer is added in an amount less than or equal to about 0.15% by weight of the water. The method comprises introducing the water comprising the multivalent ions, the complexing agent and the anionic friction reducing polymer into at least a portion of the subterranean formation such that the friction reducing polymer reduces energy loss due to turbulence in the water.Type: GrantFiled: July 17, 2007Date of Patent: August 25, 2009Assignee: Halliburton Energy Services, Inc.Inventors: David E. McMechan, Rob E. Hanes, Jr., Ian D. Robb, Thomas D. Welton, Karen L. King, Bobby J. King, Jiten Chatterji
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Publication number: 20090205816Abstract: A composition suitable for use in a packer element for a wellbore includes: a hydrocarbon-swellable polymer, the hydrocarbon-swellable polymer present in the composition in an amount between about 10 and 30 percent by weight; an oil-resistant polymer, the oil-resistant polymer present in the composition in an amount between about 10 and 30 percent by weight; and a hydrocarbon swelling agent, the hydrocarbon swelling agent present in the composition in an amount between about 15 and 60 percent by weight. A composition as described may have a good balance of the swelling properties of the hydrocarbon-swellable polymer and the mechanical properties of the oil-resistant polymer. These properties may be useful in a packer element for a wellbore.Type: ApplicationFiled: February 6, 2009Publication date: August 20, 2009Inventors: Dilip K. De, William S. Butterfield
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Publication number: 20090176667Abstract: Methods are provided that include a method comprising providing a treatment fluid comprising at least a plurality of expandable particulates comprising a swellable elastomer composition. In some embodiments the expandable particulates may comprise a swellable elastomer and a filler material. In some embodiments the expandable particulates may comprise a solid particulate that has been at least partially coated with a swellable elastomer composition. In some embodiments, the treatment fluid may be placed into at least a portion of a subterranean formation at a pressure sufficient to create or enhance at least one fracture in the subterranean formation. Additional methods are also provided.Type: ApplicationFiled: January 3, 2008Publication date: July 9, 2009Inventor: Philip D. Nguyen
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Patent number: 7541318Abstract: The present invention relates to methods for making proppants on-the-fly during subterranean treatment operations. Some embodiments of the present invention provide methods of preparing proppant on-the-fly comprising providing discrete amounts of a resin mixture that comprises a resinous material and a filler material; placing the discrete amounts of resin mixture into a well bore comprising a treatment fluid; and, allowing the discrete amounts of the resin mixture to substantially cure and form proppant particles while inside the treatment fluid. Other embodiments of the present invention provide methods of fracturing a portion of a subterranean formation using proppant prepared on-the-fly.Type: GrantFiled: May 26, 2004Date of Patent: June 2, 2009Assignee: Halliburton Energy Services, Inc.Inventors: Jimmie D. Weaver, Philip D. Nguyen
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Publication number: 20090111716Abstract: An aqueous fluid composition useful for the recovery of hydrocarbons from a subterranean formation, including a mixture of water, a water soluble polymer, an inorganic salt and at least one zwitterionic surfactant and methods of using same.Type: ApplicationFiled: October 17, 2008Publication date: April 30, 2009Applicant: Rhodia Inc.Inventors: Lawrence Alan HOUGH, Gilda Maria Lizarraga, Herve Adam, Jean-Christophe Castaing, Subramanian Kesavan
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Publication number: 20090088348Abstract: A variety of methods and compositions are disclosed herein, including, in one embodiment, a method comprising: introducing a settable composition into a subterranean formation, wherein the settable composition comprises: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water; and allowing the settable composition to set in the subterranean formation. Another embodiment comprises a settable composition comprising: a cementitious component comprising a hydraulic cement and cement kiln dust; a swellable particle; and water.Type: ApplicationFiled: September 11, 2008Publication date: April 2, 2009Inventors: Craig W. Roddy, Jiten Chatterji, D. Chad Brenneis, Bobby J. King
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Patent number: 7510005Abstract: A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid comprising at least one polymerizable monomer and at least one antistatic agent to control build up of static charge. The second fluid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.Type: GrantFiled: December 21, 2007Date of Patent: March 31, 2009Assignees: Chevron U.S.A. Inc., Lucite InternationalInventors: Don M. Coates, John M. Daniel
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Publication number: 20090069202Abstract: Compositions and methods are described for inhibiting corrosion of corrodible metals present in contact with water in cooling water and other water storage systems. The compositions include concentrated stannous salts and agents to solubilize such salts.Type: ApplicationFiled: September 7, 2007Publication date: March 12, 2009Inventors: William Stapp, Gary Westlund
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Patent number: 7491682Abstract: A well treating composition of a composite containing a scale inhibitor adsorbed onto a water-insoluble adsorbent is useful in the control, formation and treatment of inorganic scales in a subterranean formation or wellbore. In addition, the well treating composition is useful in controlling the rate of release of scale inhibitor in the wellbore. The water-insoluble adsorbent may be activated carbon, silica particulate, precipitated silica, zeolite, diatomaceous earth, ground walnut shells, fuller's earth and organic synthetic high molecular weight water-insoluble adsorbents. The composite may be introduced into an oil or gas well with a carrier fluid.Type: GrantFiled: December 15, 2004Date of Patent: February 17, 2009Assignee: BJ Services CompanyInventors: D. V. Satyanarayana Gupta, Joseph W. Kirk
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Publication number: 20090038855Abstract: Herein provided are variable density fluid compositions and methods for using such compositions in a subterranean formation. One exemplary embodiment of the variable density fluid compositions of the present invention comprises a variable density fluid comprising: a base fluid; and a portion of elastic particles, the elastic particles having an isothermal compressibility factor in the range of from about 1.5×10?3 (1/psi) to about 1.5×10?9 (1/psi). Also provided are cement compositions comprising elastic particles, processes for preparing such cement compositions, and methods of cementing in subterranean formations using such cement compositions. One or more elastic particles are mixed with the cement before pumping the cement into a well bore. The elastic particles are preferably composed of an elastomeric material such as a copolymer of methylmethacrylate and acrylonitrile; a terpolymer of methylmethacrylate, acrylonitrile, and dichloroethane; a styrene-divinylbenzene copolymer; and polystyrene.Type: ApplicationFiled: July 1, 2008Publication date: February 12, 2009Inventors: Krishna M. Ravi, Donald L. Whitfill, B. Raghava Reddy, Mike Szymanski
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Patent number: 7488705Abstract: Sealant compositions comprising an alkali swellable latex and a pH increasing material and methods of using the same to service a wellbore are provided. In one embodiment, the sealant composition can be used in a wellbore and includes an alkali swellable latex and a pH increasing material. The sealant composition can have a pH of from about 7 to about 14. In other embodiments, the pH increasing material includes a base-producing material. The base-producing material can include alkali and alkali earth metal carbonates, alkali and alkali earth metal bicarbonates, alkali and alkali earth metal hydroxides, alkali and alkali earth metal oxides, alkali and alkali earth metal phosphates, alkali and alkali earth metal hydrogen phosphates, alkali and alkaline earth metal sulphides, alkali and alkaline earth metal salts of silicates, alkali and alkaline earth metal salts of aluminates, water soluble or water dispersible organic amines, polymeric amine, amino alcohols, or combinations thereof.Type: GrantFiled: December 8, 2004Date of Patent: February 10, 2009Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Mark R. Savery, Krishna M. Ravi, Donald L. Whitfill
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Patent number: 7484564Abstract: Methods and compositions relating to delayed tackifying compositions that comprise an aqueous tackifying agent and a delayed acid-releasing activator that may be used to stabilize particulates and reduce particulate migration within a subterranean formation.Type: GrantFiled: August 16, 2005Date of Patent: February 3, 2009Assignee: Halliburton Energy Services, Inc.Inventors: Thomas D. Welton, David McMechan, Bradley L. Todd
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Patent number: 7449430Abstract: The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer.Type: GrantFiled: June 23, 2006Date of Patent: November 11, 2008Assignee: Eliokem S.A.S.Inventors: Bertrand Guichard, Barry Wood, Patrick Vongphouthone
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Patent number: 7441599Abstract: A process is described for replacing at least a portion of the liquid within the annular volume of a casing system within a wellbore with a second liquid. The second liquid is preselected to provide a measure of control of the pressure within the annular volume as the fluid within the volume is being heated.Type: GrantFiled: November 18, 2005Date of Patent: October 28, 2008Assignees: Chevron U.S.A. Inc., Los Alamos National Security, LLCInventors: Robert E. Hermes, Manuel E. Gonzalez, Brian C. Llewellyn, James B. Bloys
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Publication number: 20080194435Abstract: Use of a mixture comprising a surfactant and a cosurfactant in the form of an aqueous solution for flooding underground deposits of hydrocarbons for mobilizing and recovering the hydrocarbons from the underground deposits, the cosurfactant being a substance or a group of substances selected from the following list: an amphiphilic comb polymer having a backbone with two or more side chains attached to the backbone, the side chains differing from one another and/or the side chains differing from the backbone in their amphiphilic character, an amphiphilic polymer having one or more hydrophobic subunits [A2] based on a polyisobutene block, at least 50 mol % of whose polyisobutene macromolecules have terminally arranged double bonds, and one or more hydrophilic subunits [B2], or an amphiphilic polymer having the general structural formulaType: ApplicationFiled: June 8, 2006Publication date: August 14, 2008Applicant: BASF AktiengesellschaftInventors: Jürgen Huff, Gunter Oetter, Angelika Kuhnle, Susanne Petrovic, Marcus Guzmann, Ingo Munster, Gregor Brodt
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Patent number: 7398824Abstract: A formulation containing a copolymer derived from a cationic monomer effectively inhibits and controls the formation of inorganic scales. Suitable copolymers include those comprising an acrylamide unit and a quaternary ammonium salt group, and optionally an acrylate and/or nitrogen heterocyclic monomer including those wherein the quaternary ammonium salt is a unit of the formula: wherein R is methyl or hydrogen; R4 is a C1 to C6 alkyl group, optionally substituted with halogen, hydroxyl and alkoxy groups, X is halogen; and R1, R2 and R3 are independently selected from the group consisting of alkyl and alkoxy groups. Suitable nitrogen heterocyclic compounds include N-vinylpyrrolidone, N-vinylformamide, N-vinylacetamide, N-vinylcaprolactam, N-vinylimidazole and N-vinylpyridine.Type: GrantFiled: February 1, 2006Date of Patent: July 15, 2008Assignee: BJ Services CompanyInventors: Xiaolan Wang, Qi Qu, Mingjie Ke
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Patent number: 7398825Abstract: Methods for stabilizing portions of a subterranean formation and controlling the production of water from those subterranean formations. In one embodiment, the methods of the present invention comprise: providing a consolidating agent; introducing the consolidating agent into an unconsolidated portion of a subterranean formation using a fluid diversion tool; allowing the consolidating agent to at least partially consolidate the unconsolidated portion of the subterranean formation; providing a relative permeability modifier; introducing the relative permeability modifier into the subterranean formation using a fluid diversion tool; and allowing the relative permeability modifier to modify the relative permeability of at least a portion of the subterranean formation.Type: GrantFiled: November 21, 2005Date of Patent: July 15, 2008Assignee: Halliburton Energy Services, Inc.Inventors: Philip D. Nguyen, Ronald G. Dusterhoft, Jim B. Surjaatmadja, Loyd E. East, Jr.
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Publication number: 20080161211Abstract: Methods of treating a portion of a subterranean formation comprising: providing an aqueous treatment fluid comprising an aqueous fluid and a friction reducing copolymer that comprises acrylamide and 2-(2-ethoxyethoxy)-ethyl acrylate and introducing the aqueous treatment fluid into the portion of the subterranean formation. Methods of fracturing a subterranean formation comprising: providing an aqueous treatment fluid comprising an aqueous fluid and a friction reducing copolymer that comprises acrylamide and 2-(2-ethoxyethoxy)-ethyl acrylate and introducing the aqueous treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. Aqueous treatment fluids comprising: an aqueous fluid and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester.Type: ApplicationFiled: March 13, 2008Publication date: July 3, 2008Inventors: Robert E. Hanes, David E. McMechan, Karen L. King, Jiten Chatterji
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Stable solutions of zirconium hydroxyalkylethylene diamine complex and use in oil field applications
Publication number: 20080149341Abstract: A clear, stable, salt-free solution of a 1:1 molar complex of zirconium and N,N,N?,N?-tetrakis-(2-hydroxypropyl)ethylene diamine. The solution can be used in a cross-linking composition comprising a cross-linkable organic polymer for oil field applications such as fluid fracturing and plugging permeable zones in subterranean formations.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventor: Donald Edward Putzig -
Publication number: 20080108524Abstract: A water absorbing composition includes a particle having a core of a water-swelling material. A coating substantially surrounds the core that temporarily prevents contact of water with the water-swelling material. The coating may be formed from a layer of water degradable material or a non-water-degradable, non-water absorbent encapsulating layer. A quantity of particles including delayed water-swelling particles formed at least in part from a water-swelling material and, optionally, non-water-swelling particles of the same or different size distributions can be used in treating a formation penetrated by a wellbore. A slurry of the particles is formed with a carrier fluid. The slurry of particles is introduced into the wellbore of the formation to facilitate treatment.Type: ApplicationFiled: November 8, 2006Publication date: May 8, 2008Inventors: Dean M. Willberg, Kseniya Nosova, Marina Bulova, Simon James, Sergey Sokolov
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Patent number: 7363978Abstract: Novel uses of reactive surfactants in treating subterranean formations and/or proppant particulates are provided. In one embodiment, the present invention provides a method comprising: providing a treatment fluid that comprises a base fluid and a reactive surfactant; introducing the treatment fluid into a subterranean formation; and allowing the reactive surfactant to interact with a surface in the subterranean formation.Type: GrantFiled: October 14, 2005Date of Patent: April 29, 2008Assignee: Halliburton Energy Services, Inc.Inventors: Thomas D. Welton, Philip D. Nguyen
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Publication number: 20080051300Abstract: Compositions comprise nonionic fluorinated polymeric surfactants and solvent. The solvent comprises: at least one of a polyol or polyol ether, wherein the polyol and polyol ether have from 2 to 10 carbon atoms; and at least one monohydroxy alcohol, ether, or ketone having from 1 to 4 carbon atoms, or a mixture thereof, wherein the solvent is capable of at least one of solubilizing or displacing brine or condensate in the hydrocarbon-bearing clastic formation. Embodiments of the compositions are useful in recovery of hydrocarbons from hydrocarbon-bearing clastic formations that contain brine and/or condensate.Type: ApplicationFiled: August 23, 2006Publication date: February 28, 2008Inventors: Gary A. Pope, Jimmie R. Baran
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Publication number: 20080045422Abstract: Methods of treating a portion of a subterranean formation, comprising: providing an aqueous treatment fluid comprising water, and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester; and introducing the aqueous treatment fluid into the portion of the subterranean formation. Methods of fracturing a subterranean formation comprising: providing an aqueous treatment fluid comprising water, and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester; and introducing the aqueous treatment fluid into the subterranean formation at or above a pressure sufficient to create one or more fractures in the subterranean formation. Aqueous treatment fluids comprising: an aqueous fluid and a friction reducing copolymer that comprises acrylamide and an acrylic acid ester.Type: ApplicationFiled: August 16, 2006Publication date: February 21, 2008Inventors: Robert E. Hanes, David E. McMechan, Karen L. King, Jiten Chatterji
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Patent number: 7332459Abstract: A method of inhibiting scale formation in a subterranean formation comprising: (a) injecting a suspension comprising particles of a controlled release scale inhibitor suspended in an aqueous medium into a formation through an injection well wherein the particles have a mean diameter of less than 10 microns, preferably less than 5 microns, more preferably less than 1 micron; (b) allowing the suspension to percolate through the subterranean formation towards a production well; and (c) controllably releasing the scale inhibitor from the particles in the near well bore region of the production well. Suitably, the particles of the controlled release scale inhibitor comprise an esterifiable scale inhibitor cross-linked with a polyol via ester cross-links.Type: GrantFiled: May 15, 2003Date of Patent: February 19, 2008Assignee: BP Exploration Operating Company LimitedInventors: Ian Ralph Collins, Simon Neil Duncum
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Publication number: 20080035344Abstract: A delayed gelling system useful in conformance control in the production of petroleum from subterranean formations is disclosed. The gelling system comprises an acidic aqueous solution of acid-soluble or cationic polyacrylamide, an at least partially neutralized acid aluminum salt, an activator comprising a hydroxyl donor, and an optional gel modifier. The gelling system may be pumped into formations with excessive water production and thermally activated in the formation at downhole conditions to form a co-gel of polyacrylamide interspersed in an inorganic gel network to reduce water production.Type: ApplicationFiled: August 7, 2006Publication date: February 14, 2008Inventors: Nadir Odeh, Mathew Samuel, Philippe Enkababian, Keng Seng Chan