Organic Component Contains Carboxylic Acid, Ester, Or Salt Thereof Patents (Class 507/267)
  • Publication number: 20110284225
    Abstract: A method comprises providing a treatment fluid comprising a gelling agent, an aqueous base fluid, a buffer composition comprising a plurality of salts, and a crosslinking agent; and contacting a subterranean formation with the treatment fluid. The method may be used in subterranean formation having a temperature greater than about 200° F., and the treatment fluid useful with the method may have a high shear recovery greater than 100%.
    Type: Application
    Filed: May 20, 2010
    Publication date: November 24, 2011
    Inventors: Paul D. Lord, Ivan Suleiman, John M. Terracina, Rajendra A. Kalgaonkar
  • Patent number: 8062999
    Abstract: Sealant compositions comprising a colloidally stabilized latex and methods of using the same to service a wellbore are provided. The sealant compositions may include: an aliphatic conjugated diene monomer; an additional monomer comprising a non-aromatic unsaturated mono- or di- carboxylic ester monomer, an aromatic unsaturated monomer, a nitrogen-containing monomer, or combinations thereof; and a protective colloid. The foregoing sealant composition may be displaced into the wellbore to isolate the subterranean formation from a portion of the wellbore, to support a conduit in the wellbore, to plug a void or crack in the conduit, to plug a void or crack in a cement sheath disposed in an annulus of the wellbore, to plug an opening between the cement sheath and the conduit, or combinations thereof. The colloidally stabilized latex remains substantially stable when exposed to salt, which may be present in the wellbore and/or in the sealant composition itself.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: November 22, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: B. Raghava Reddy, Anthony V. Palmer
  • Patent number: 8043996
    Abstract: A process is disclosed for treating an underground formation, which process comprises: (a) introducing into the underground formation a micellar dispersion comprising water, one or more organic acid precursors, one or more surfactants and, optionally, one or more salts, co-surfactants and/or organic liquids that are not organic acid precursors; and (b) allowing (i) the micellar dispersion to solubilize hydrocarbons, emulsions or water blocks present in the underground formation, and (ii) at least a portion of the organic acid precursor to hydrolyze in-situ to produce sufficient organic acid to substantively dissolve acid soluble material present in or adjacent to filter cakes or other damage in the underground formation.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: October 25, 2011
    Assignee: Cleansorb Limited
    Inventor: Ralph Edmund Harris
  • Publication number: 20110257050
    Abstract: A method and composition for crosslinking a polymer based fluid includes providing a dry blend of crosslinker and delay agent. The crosslinker and delay agent are mixed and granulated in a dry form prior to addition to the polymer fluid.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Inventors: Marie Noelle Dessinges, Jean-Louis Pessin
  • Patent number: 8039421
    Abstract: A method is provided for inhibiting scale in a hydrocarbon system, including the steps of: providing a hydrocarbon system; providing an aloe-derived scale inhibitor; and mixing the aloe-derived scale inhibitor with the hydrocarbon system in amounts effective to inhibit formation of scale. The scale inhibitor is an aloe vera gel/aloe sap mix dissolved in water at a concentration of between about 5 and about 50% wt/wt, which includes polysaccharides having a hydrocarbon chain structure having carboxyl and alcohol functional groups that interact with divalent ions.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: October 18, 2011
    Assignee: Intevep, S.A.
    Inventors: Alfredo Viloria, Luis Castillo, Jose A. Garcia, Maria Alejandra Carrasquero Ordaz, Elluz Vanessa Torin
  • Publication number: 20110247821
    Abstract: Breaking compositions are disclosed for controlled breaking of borate cross-linked fracturing fluids, and to method for making and using same, where the composition includes an oxidative component and an ester component.
    Type: Application
    Filed: April 12, 2010
    Publication date: October 13, 2011
    Applicant: CLEARWATER INTERNATIONAL, LLC
    Inventors: Joseph E. Thompson, Sarkis R. Kakadjian, Jose L. Garza, Frank Zamora
  • Patent number: 8034748
    Abstract: The present invention relates to an additive, and its use for inhibiting nucleation, growth and agglomeration of gas hydrates by adding an effective amount of an inhibitor to a multiphasic mixture which tends to hydrate formation and consists of water, gas and optionally condensate, or to a drilling fluid which tends to form gas hydrates. Said inhibitor comprising dialkoxylated quaternary ammonium compounds of the formula 1 where R1, R2 are each independently radicals of the formulae -(A-O)n—(C)—CO—O—R5, R3 is C1- to C30-alkyl or C2- to C30-alkenyl, R4 is an organic radical which optionally contains heteroatoms and has from 1 to 100 carbon atoms, R5 is an alkyl or an alkenyl, n is a number from 1 to 20, A is an alkylene group, B is an alkylene group, C is a C1- to C6-alkylene group and X is an anion, are used as gas hydrate inhibitors.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 11, 2011
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Uwe Dahlmann, Michael Feustel
  • Patent number: 8030252
    Abstract: In one embodiment, the present invention provides a drilling fluid composition that comprises a surfactant-free emulsion comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and a non-surfactant polymeric emulsifier. In another embodiment, the present invention provides a method of treating a subterranean formation comprising providing a treatment fluid that comprises a surfactant-free emulsion, the surfactant-free emulsion comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and a non-surfactant polymeric emulsifier; and treating the subterranean formation.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: October 4, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventor: William W. Shumway
  • Publication number: 20110237470
    Abstract: A method of decreasing the viscosity of a gelled organic-based fluid is disclosed. The method comprises combining an organic solvent, a gelling agent, and a metal crosslinker; forming the gelled organic-based fluid; and adding a chelating agent forming a complex with the metal to decrease the viscosity of the gelled organic-based fluid. The chelating agent may be chosen within nitrilotriacetic acid (NTA), citric acid; ascorbic acid, hydroxyethylethylenediaminetriacetic acid (HEDTA) or its salts, ethylenediaminetetraacetic acid (EDTA) or its salts, diethylenetriaminepentaacetic acid (DTPA) or its salts, phosphinopolyacrylate, thioglycolates, or a combination thereof.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 29, 2011
    Inventors: Leiming Li, Lijun Lin, Oscar Bustos, Randy Tercero, Mathew M. Samuel
  • Patent number: 8025099
    Abstract: A method of treating a hydrocarbon reservoir that is penetrated by a well is disclosed, the method comprising injecting into the well a water transfer system comprising liquefied petroleum gas (LPG) and an alcohol that is at least partially water and liquefied petroleum gas soluble. Further, a method of treating a hydrocarbon reservoir is disclosed, the method comprising introducing into the hydrocarbon reservoir a combination of LPG and a solvent system that is at least partially liquefied petroleum gas and water soluble.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: September 27, 2011
    Assignee: GasFrac Energy Services Inc.
    Inventor: Shaun T. Mesher
  • Publication number: 20110220360
    Abstract: Apparatus and method for treating a subterranean formation including forming a first fluid comprising low pH, introducing the first fluid into a subterranean formation, forming a second fluid comprising high pH, and introducing the second fluid into the formation. Apparatus and method for treating a subterranean formation including introducing a acidizing fluid into a subterranean formation, introducing an inert spacer into the formation, introducing an alkaline fluid into the formation, and introducing a brine or a solvent overflush fluid.
    Type: Application
    Filed: March 12, 2010
    Publication date: September 15, 2011
    Inventors: Thomas Lindvig, Murtaza Ziauddin, Michael J. Fuller
  • Publication number: 20110214874
    Abstract: A method of cleaning a wellbore drilled with an oil-based drilling fluid that forms an oil-based filter cake where the method includes: emplacing a breaker fluid into the wellbore, the breaker fluid comprising: a water-miscible non-aqueous fluid; at least one weighting salt; and at least one breaking agent; and shutting in the well for a period of time sufficient to initiate breaking of the oil-based filter cake is disclosed.
    Type: Application
    Filed: November 3, 2009
    Publication date: September 8, 2011
    Applicant: M-I L.L.C.
    Inventors: Eugene Dakin, Chris Shepherd, Steven Young
  • Patent number: 8012914
    Abstract: Many methods are provided including a method comprising: providing a surfactant gel having a first viscosity that comprises an aqueous base fluid and a surfactant; placing the surfactant gel into a subterranean formation at a pressure sufficient to create or enhance a fracture therein; providing an ortho ester breaker; contacting the surfactant gel with the ortho ester breaker; allowing the breaker to hydrolyze to produce an acid and an alcohol; and allowing the acid and/or the alcohol to interact with the surfactant gel so as to reduce the first viscosity of the surfactant gel to a second viscosity.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 6, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Thomas D. Welton
  • Patent number: 8008235
    Abstract: The present invention provides drilling fluids that comprise a base fluid and a water-soluble relative permeability modifier. In addition, the present invention provides methods of reducing the permeability of a subterranean formation to aqueous-based fluids during the drilling phase that comprises providing a water-soluble relative permeability modifier; and placing the water-soluble relative permeability modifier into the subterranean formation during the drilling phase. The present invention provides methods of drilling a well bore in a subterranean formation comprising providing a drilling fluid that comprises a base fluid and a water-soluble relative permeability modifier, and placing the drilling fluid in the subterranean formation. The water-soluble relative permeability modifiers of the present invention generally may comprise hydrophilically modified polymers, hydrophobically modified polymers, or water-soluble polymers without hydrophobic or hydrophilic modification.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: August 30, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Larry S. Eoff, Eldon D. Dalrymple, B. Raghava Reddy
  • Patent number: 8003575
    Abstract: An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, citric acid, maleic acid, hydrofluoric acid, and mixtures thereof.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: August 23, 2011
    Assignee: Rhodia Operations
    Inventors: Floryan De Campo, Allwyn Colaco, Bruno Langlois, Chris Jones, Gary Woodward
  • Patent number: 8003581
    Abstract: An iron control agent capable of reducing ferric iron containing compounds to ferrous iron containing compounds in an acidic solution, such as one used for formation acidizing. The iron control agent comprises a combination of a sulfur dioxide, sulfurous acid, sulfite salts, bisulfite salts, or thiosulfate salts or mixtures thereof, with a source of copper ions and a source of iodine or iodine ions. The iron control agent may also include small amounts of an adjunct such as stannous chloride, 2-mercaptoethanol, and thioglycolic acid and its salts.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: August 23, 2011
    Assignee: Chemplex, L.C.
    Inventors: Edward F. Vinson, Ricky N. Beard, Richard J. Dyer
  • Patent number: 7998909
    Abstract: A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula: [R—(OCH2CH2)m—Oq—YOn]pX wherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: August 16, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Lijun Lin, Carlos Abad, Bruno Drochon, Gregory Kubala, Laura Schafer, Alejandro Pena, Ramsey Buoy
  • Patent number: 7998910
    Abstract: Treatment fluids for and methods of treating subterranean formations are provided. In certain embodiments, a method is provided comprising providing a treatment fluid comprising a relative permeability modifier, a delayed filter cake breaker, and a carrier fluid, contacting at least a portion of a filter cake in a subterranean formation with the treatment fluid, and removing at least a portion of the filter cake.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: August 16, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Bradley L. Todd
  • Patent number: 7998911
    Abstract: A non-toxic, environmentally friendly, green flowback aid is disclosed that reduces water blockage when injected into a fractured reservoir. The composition includes an water soluble ester of a low molecular weight alcohol and a low molecular weight organic acid, an oil soluble ester of a low molecular weight alcohol and a high molecular weight fatty acid, one or more water soluble or dispersible nonionic surfactant(s) derived from vegetable or animal sources, one or more anionic or amphoteric surfactant(s) derived from animal or vegetable based sources, and, water. Compositions for low temperature applications are also disclosed that can remain fluid down to ?41° F.
    Type: Grant
    Filed: January 15, 2011
    Date of Patent: August 16, 2011
    Assignee: Oil Chem Technologies
    Inventors: Paul Daniel Berger, Christie Huimin Berger
  • Patent number: 7998906
    Abstract: Methods and compositions useful in treating subterranean formations, and more particularly, breaker compositions that may be useful in treating subterranean formations wherein synthetic polymers are used, are provided. Of the many methods and compositions provided herein, one composition comprises a source of hydrogen peroxide and an activator. One method comprises providing a polymer breaker composition comprising a source of hydrogen peroxide and an activator; introducing the polymer breaker composition into a well bore which penetrates a subterranean formation; allowing the activator to activate the source of hydrogen peroxide to create an oxidizing species; and allowing the oxidizing species to break synthetic polymers present in the subterranean formation.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: August 16, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Rajesh K. Saini, Michael W. Sanders, Fong-Fong Foo, Jeff L. Mundy
  • Patent number: 7994102
    Abstract: An acid treatment composition is provided including a corrosion inhibitor and an optional corrosion inhibitor intensifier in an acidic solution. More specifically, the composition includes an anionic surfactant. Methods for treating wells with these acid treatment compositions are also provided that help control corrosion of the steel used in the wells during the acid treatment.
    Type: Grant
    Filed: April 1, 2008
    Date of Patent: August 9, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: D V Satyanarayana Gupta, Joel Lynn Boles
  • Patent number: 7994099
    Abstract: Provided herein are methods and compositions that include a method comprising contacting a metal surface with an acidic fluid comprising a corrosion inhibitor that comprises a reaction product formed from a direct or an indirect reaction of an aldehyde with a thiol and/or an amine functionalized ring structure. A composition provided includes an acidic treatment fluid that comprises an aqueous-base fluid, and acid, and a corrosion inhibitor that comprises a reaction product formed from a direct or an indirect reaction of an aldehyde with a thiol and/or an amine functionalized ring structure.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: August 9, 2011
    Assignee: Haliburton Energy Services, Inc.
    Inventors: Juanita M. Cassidy, Chad E. Kiser, Jim L. Lane
  • Patent number: 7994101
    Abstract: Many methods are presented herein including a method comprising: providing a metal surface; and contacting the metal surface with a treatment fluid comprising an aqueous base fluid, an acid, a corrosion inhibitor, and a corrosion inhibitor intensifier composition comprising a corrosion inhibitor compound that corresponds to a formula: PR1R2R3, wherein R1, R2, and R3 are chosen from the group consisting of C1-C20 alkyl, cycloalkyl, oxyalkyl, and aryl groups, and R1, R2, and R3 may or may not be equal. Corrosion inhibitor intensifier compositions also are provided.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: August 9, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Juanita M. Cassidy, Chad E. Kiser, Jim L. Lane
  • Publication number: 20110190173
    Abstract: Treatment fluids that comprise a phosphorus component useful for inhibiting metal corrosion in acidic environments and associated methods of use are provided. An example of a method of using such treatment fluids may comprise providing a treatment fluid that comprises: an aqueous base fluid, a weak acid or salt thereof, and a phosphorus component, and introducing the treatment fluid into a subterranean formation.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 4, 2011
    Inventors: Juanita M. Cassidy, Jim L. Lane, Chad E. Kiser
  • Patent number: 7989404
    Abstract: A microemulsion system is disclosed which comprises a solvent subsystem, a co-solvent subsystem and a surfactant subsystem comprises at least one monoalkyl branched propoxy sulfate anionic surfactant, where the microemulsion system are useful in drilling, producing, remediation, and fracturing application to reduce water blocks and water blocking in formation of a producing formation.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: August 2, 2011
    Assignee: Clearwater International, LLC
    Inventors: Sarkis R. Kakadjian, Frank Zamora, Tina Garza, Laura De Santis Marquez, Jean-Luis Salager
  • Patent number: 7985718
    Abstract: The use of a surfactant mixture comprising at least one surfactant having a hydrocarbon radical composed of from 12 to 30 carbon atoms and at least one cosurfactant having a branched hydrocarbon radical composed of from 6 to 11 carbon atoms for tertiary mineral oil extraction.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: July 26, 2011
    Assignee: BASF SE
    Inventors: Ulrich Steinbrenner, Christian Bittner, Oetter Günter, Marcus Guzmann
  • Patent number: 7981845
    Abstract: This relates to a method and composition for forming and utilizing a fluid in the oilfield services industry including exposing a polyacid and/or polyacid derivative to a preparation method, introducing the prepared polyacid and/or polyacid derivative to a fluid to form a treatment fluid, and treating a subterranean formation and/or a wellbore with the treatment fluid, wherein the viscosity of the treatment fluid is not observably reduced by introducing the prepared polyacid and/or polyacid derivative to a treatment fluid. This also relates to a method and composition for use in the oil field services industry including a prepared polyacid and/or polyacid derivative, a fluid, and a viscosity control agent, wherein the viscosity of the composition is not observably lower than if the prepared polyacid and/or polyacid derivative were not present.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: July 19, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Mathew M. Samuel, Balkrishna Gadiyar, Sai Aung Zaw Min
  • Patent number: 7977284
    Abstract: A method of making phenol and alkylphenol ethoxylates non-estrogenic by inserting 1 mole of propylene oxide onto the phenolic group before proceeding with the addition of ethylene oxide or mixtures of ethylene and propylene oxide. The final phenolic products can be further reacted to form sulfates, sulfonates, phosphate esters, condensed alkylphenol alkoxylates and other derivatives of alkylphenol or phenol. Non-estrogenic phenol and alkylphenol alkoxylates and their derivatives have been found to be excellent salt tolerant, high temperature stable surfactants for oil recovery from subterranean reservoirs. These products are also useful in forming emulsions of heavy crude for transportation through pipelines.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: July 12, 2011
    Assignee: Oil Chem Technologies, Inc
    Inventors: Paul Berger, Christie Berger
  • Patent number: 7977282
    Abstract: Methods of stimulating biogenic production of a metabolic product with enhanced hydrogen content are described. The methods may include accessing a consortium of microorganisms in a geologic formation that includes a carbonaceous material. They may also include providing a phosphorous compound to the microorganisms. The phosphorous compound stimulates the consortium to metabolize the carbonaceous material into a metabolic product with enhanced hydrogen content. Also, methods of stimulating biogenic production of a metabolic product with enhanced hydrogen content by providing a yeast extract amendment to a consortium of microorganisms is described. The yeast extract amendment stimulates the consortium to metabolize carbonaceous material in the formation into the metabolic product with enhanced hydrogen content.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: July 12, 2011
    Assignee: Luca Technologies, Inc.
    Inventors: Robert S. Pfeiffer, Glenn A. Ulrich, Roland P. DeBruyn, Gary Vanzin
  • Patent number: 7977285
    Abstract: Hydrocarbon fluid compositions comprising a liquid hydrocarbon, an aluminum soap, a hydrocarbon foaming agent and a gas. The fluids can be used in various oil field operations.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: July 12, 2011
    Assignee: Trican Well Service Ltd.
    Inventors: Kewei Zhang, Bill O'Neil, Darren Maley
  • Publication number: 20110166050
    Abstract: The invention discloses treatment and reuse of oilfield produced water. A method of inhibiting enzymes/bacteria in an aqueous medium for viscosification comprises contacting the aqueous medium with a denaturant and/or a bactericide and thereafter mixing a gelling agent in the aqueous medium. The viscosified fluid can be used as a well treating fluid for fracturing and other applications. A well treatment fluid comprises a metal denaturant and/or a bactericide and a gelling agent in an amount effective to viscosify the fluid. Also disclosed is oilfield produced water denatured with from 1 to 2000 ppm by weight of a zirconium compound.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Inventors: Leiming Li, Paul R. Howard, Michael D. Parris, Bernhard Lungwitz, Curtis L. Boney, Kevin W. England, Richard D. Hutchins, Jack Li
  • Patent number: 7972997
    Abstract: A process for making a coated substrate that includes treating a proppant with a coating agent, wherein the coating agent comprises at least one of monomeric alpha-hydroxycarboxylic acids, alpha-hydroxycarboxylic acid polymers, and combinations thereof, reacting the treated proppant to form a polymer coated proppant, and recovering the polymer coated proppant is disclosed.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: July 5, 2011
    Assignee: M-I L.L.C.
    Inventors: Charles Svoboda, Hugh Caffery, Li-Jein Lee
  • Publication number: 20110160103
    Abstract: A method of servicing a wellbore comprising placing a composition comprising a surfactant, brine, an oleaginous fluid, and optionally a co-surfactant in an annular space of the wellbore, wherein the composition forms a microemulsion under low shear conditions.
    Type: Application
    Filed: December 30, 2009
    Publication date: June 30, 2011
    Applicant: HALLIBURTON ENERGY SERVICES, INC
    Inventors: Ryan van Zanten, Douglas J. Harrison
  • Publication number: 20110152133
    Abstract: A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent.
    Type: Application
    Filed: March 3, 2011
    Publication date: June 23, 2011
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Publication number: 20110152132
    Abstract: A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent.
    Type: Application
    Filed: March 3, 2011
    Publication date: June 23, 2011
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7960315
    Abstract: Methods are provided that include a method comprising providing a acidic treatment fluid that comprises a base fluid, an acid composition, and a gelling agent that comprises clarified diutan; and introducing the acidic treatment fluid into at least a portion of a subterranean formation. In some embodiments, the acidic treatment fluid may be allowed to interact with a component of the subterranean formation so that the component is at least partially dissolved. In some embodiments, the acidic treatment fluid may be introduced into a pipeline. Additional methods are also provided.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: June 14, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Thomas D. Welton, Richard W. Pauls, Lulu Song, Jason E. Bryant, Sean R. Beach, Ian D. Robb
  • Publication number: 20110127039
    Abstract: A method for treating a subterranean formation includes forming a treatment fluid including a carrier fluid, a solid acid-precursor, and a solid scale inhibitor. The solid acid-precursor includes a material that forms an acid at downhole conditions in the subterranean formation. The method further includes adding a solid acid-responsive material into the treatment fluid, where the solid acid-responsive material enhances formation of acid from the solid acid-precursor in acidic conditions. The method includes performing an acid fracture treatment and inhibiting scale formation within the subterranean formation. The solid scale inhibitor allows for long-term scale inhibition after the treatment.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 2, 2011
    Inventors: Marieliz Garcia-Lopez De Victoria, John W. Still, Toan Bui
  • Publication number: 20110124534
    Abstract: A substantially liquid gellant formed as one or more reaction products of a metal carboxylate or metal carboxylate amine salt, one or more organic acids, an ester which drives the reaction so that the reaction products are asymmetrical in structure, and a rheology modifier which preferentially interacts between the reaction products for prevent solidifying of the gellant reaction products until such time as the gellant is mixed with the fracturing fluid containing an activator after which the reaction products preferentially interact with the activator to gel the fracturing fluid. The resulting gellant is capable of gelling a hydrocarbon base fluid in less than about 30 seconds.
    Type: Application
    Filed: February 4, 2011
    Publication date: May 26, 2011
    Applicant: WEATHERFORD ENGINEERED CHEMISTRY CANADA LTD.
    Inventors: Clayton SMITH, Simon John Michael LEVEY
  • Patent number: 7947629
    Abstract: An acidizing fluid for sandstone formations is provided, along with methods of acidizing a sandstone formation penetrated by a wellbore. The aqueous acid treatment is a mixture of an aqueous liquid, a fluoride source, and an effective amount of at least one homopolymer or copolymer of a polycarboxylic acid, salt thereof or derivative thereof, which is introduced into the wellbore, and allowed to acidize the formation and concurrently inhibit calcium fluoride formation and impart calcium tolerance to the fluid.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: May 24, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Michael J. Fuller
  • Publication number: 20110114322
    Abstract: Surfactant based viscoelastic fluids for enhancing the productivity of a hydrocarbon-bearing formations have particular applicability in acid fracturing of subterranean formations surrounding oil and gas wells. The viscoelastic fluid contains an organic acid, an inorganic monovalent salt and a quaternary ammonium aromatic salt and water. The fluid may further be foamed or energized.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Inventors: Ronald Casey Plasier, Scott Robert Allen
  • Patent number: 7943555
    Abstract: Wellbore treatment kits are provide that include a polymeric solution for placement in a wellbore that penetrates a subterranean formation and an activator for causing a polymer to precipitate out of the polymeric solution when it contacts the polymeric solution, wherein the resulting precipitate is capable of at least partially blocking a flow of a wellbore servicing fluid into the subterranean formation. The wellbore servicing fluid may be, for example, a drilling fluid, a cement composition, a workover fluid, or combinations thereof. The polymeric solution may comprise, for example, a poly vinyl pyrrolidone aqueous solution, and the activator may comprise, for example, a formate brine. When desirable, the precipitate may be easily and quickly removed from the subterranean formation by dissolving it in fresh water.
    Type: Grant
    Filed: April 19, 2005
    Date of Patent: May 17, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Kenneth W. Oyler, Carl J. Thaemlitz
  • Publication number: 20110111989
    Abstract: A method and apparatus for treating a subterranean formation traversed by a wellbore including forming an emulsion comprising oil, acid, and particulate, wherein the forming the emulsion is prepared on the fly, and introducing the emulsion into a wellbore.
    Type: Application
    Filed: March 31, 2010
    Publication date: May 12, 2011
    Inventors: Oscar Bustos, Mathew M. Samuel, Frank F. Chang, Leiming Li
  • Publication number: 20110111991
    Abstract: A gelled organic-based fluid system and method of forming and using the system. The fluid system is prepared by gelling an organic solvent, a viscoelastic surfactant, and a nitrogen compound having a free electron pair such as urea in an amount effective to both increase viscosity and increase a rate of breaking the viscosity, relative to the gelled system without the nitrogen compound. In a further aspect, the method is used to treat a well penetrating a subterranean formation, for example, in a coiled tubing cleanout, or the like.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Inventors: Mathew M. Samuel, Leiming Li, Juliet Edwena Juel
  • Patent number: 7939471
    Abstract: Among many things, in some embodiments, improved viscoelastic surfactant gels that comprise non-aqueous tackifying agents, and their associated methods of use, are provided. In one embodiment, the methods comprise: providing a treatment fluid that comprises an aqueous base fluid, a non-aqueous tackifying agent, and a viscoelastic surfactant; and introducing the treatment fluid into a subterranean formation.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: May 10, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Thomas D. Welton, Jason E. Bryant
  • Patent number: 7939474
    Abstract: Wellbore servicing fluids and methods of using the same to service a wellbore in a subterranean formation are provided. A filter cake in the wellbore is contacted with the gravel packing fluid, which comprises an oil-soluble additive capable of removing the filter cake. The additive undergoes hydrolysis to produce an acid upon contacting water provided from, for example, water in the wellbore servicing fluid, connate water in the subterranean formation, water in the filter cake, water produced by the subterranean formation, water pumped into the wellbore, or combinations thereof. The acid dissolves particulates in the filter cake in situ. In an embodiment in which the wellbore servicing fluid serves as a gravel packing fluid, the fluid also deposits gravel along the face of the subterranean formation, forming a barrier against the migration of sand from the formation and into the wellbore.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: May 10, 2011
    Assignee: Halliburton Energy Services Inc.
    Inventors: Matthew E. Blauch, David W. Ritter, Sanjay Vitthal, R. Ashley Donaldson
  • Publication number: 20110100630
    Abstract: Acid-soluble cupric acetate may used in conjunction with potassium iodide to generate cuprous iodide (CuI) as an acid corrosion inhibition aid. A suitable corrosion inhibitor together with the aid protects steel surfaces in an acid environment, for instance, while acid fracturing or matrix acidizing subterranean formations. Cupric acetate monohydrate may be used with an alkali metal iodide salt such as potassium iodide or sodium iodide to generate cuprous iodide in situ in aqueous acid solutions. Use of cupric acetate provides a somewhat delayed reaction rate with potassium iodide to generate the desired product, cuprous iodide, which has very low solubility in acid systems. The method includes delayed and in situ production of cuprous iodide for enhancing performance of commercially available corrosion inhibitors, commonly referred to as intensifying the effect of the corrosion inhibitor (corrosion inhibitor intensifier or simply an intensifier).
    Type: Application
    Filed: October 25, 2010
    Publication date: May 5, 2011
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Brian A. Evans, Kushal Seth, Allen D. Gabrysch, Patrick A. Kelly, Donald Nelson Horner, JR.
  • Patent number: 7932216
    Abstract: A substantially liquid gellant formed as one or more reaction products of a metal carboxylate or metal carboxylate amine salt, one or more organic acids, an ester which drives the reaction so that the reaction products are asymmetrical in structure, and a rheology modifier which preferentially interacts between the reaction products for prevent solidifying of the gellant reaction products until such time as the gellant is mixed with the fracturing fluid containing an activator after which the reaction products preferentially interact with the activator to gel the fracturing fluid. The resulting gellant is capable of gelling a hydrocarbon base fluid in less than about 30 seconds.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: April 26, 2011
    Assignee: Weatherford Engineered Chemistry Canada Ltd
    Inventors: Clayton Smith, Simon John Michael Levey
  • Patent number: 7928040
    Abstract: A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: April 19, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7923417
    Abstract: A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: April 12, 2011
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michael W. Sanders, Jeffrey L. Mundy, Fong Fong Foo, Rajesh K. Saini
  • Patent number: 7915204
    Abstract: An aqueous composition for treating hydrocarbon wells contains (a) a scale inhibitor and (b) a viscoelastic surfactant, and further contains from 0 to less than 1% by weight of acid selected from the group consisting of hydrochloric acid, sulfuric acid, phosphoric acid, formic acid, acetic acid, citric acid, maleic acid, hydrofluoric acid, and mixtures thereof.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 29, 2011
    Assignee: Rhodia Operations
    Inventors: Floryan De Campo, Allwyn Colaco, Bruno Langlois, Chris Jones, Gary Woodward