Organic Acid Or Derivative Patents (Class 106/810)
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Patent number: 7074269Abstract: Hydraulic binders, such as cements, mortars with enhanced aging properties, are described. More particularly, hydraulic binders based on mineral silicates are described having greater aging strength, a method for making said binders and their uses and articles obtained from same. An organic compound comprising two hydrophilic functions and a hydrophobic chain such as adipic acid are added to the hydraulic binder to slow down the water uptake rate of said binder.Type: GrantFiled: July 15, 2002Date of Patent: July 11, 2006Assignee: Rhodia Polymide IntermediatesInventors: Daniel Joubert, Mustapha Sari, Quintino Carvalho
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Patent number: 7048053Abstract: Zeolite compositions having enhanced compressive strength and methods therefor are provided. In particular, methods and compositions for wellbore treating fluids, especially settable spotting fluids having enhanced compressive strength are provided.Type: GrantFiled: April 12, 2004Date of Patent: May 23, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Ashok K. Santra, Karen Luke
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Patent number: 7048793Abstract: Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.Type: GrantFiled: November 30, 2004Date of Patent: May 23, 2006Assignee: W.R. Grace & Co.-Conn.Inventors: Byong-wa Chun, Benita Dair, Charlotte B. Porteneuve, Ara Avedis Jeknavorian, Josephine Ho-Wah Cheung, Lawrence R. Roberts
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Patent number: 7037369Abstract: An alkali-free accelerator for use with spray-applied cementitious compositions such as concrete and mortar is the reaction product in aqueous medium of amorphous aluminium hydroxide, aluminium sulphate, formic acid and phosphoric acid. These accelerators perform as well as known alkali-free accelerators and are exceptionally stable, even in hot conditions.Type: GrantFiled: August 26, 2002Date of Patent: May 2, 2006Assignee: Construction Research & Technology GmbHInventor: Terje Angelskaar
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Patent number: 7036586Abstract: The present invention relates to subterranean cementing operations, and more particularly, to methods of cementing in subterranean formations using cement compositions that autogenously cure voids that may form in such cement compositions. In one embodiment, the present invention provides a method of cementing in a subterranean formation penetrated by a well bore comprising the steps of: placing a cement composition into the well bore, wherein the cement composition comprises a first cementitious component having a first set time and a second cementitious component having a second set time that is delayed relative to the first set time of the first cementitious component; allowing the first cementitious component to at least partially set; and allowing the second cementitious component to set after a delay period.Type: GrantFiled: January 30, 2004Date of Patent: May 2, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Bradley L. Todd
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Patent number: 7032663Abstract: This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean applications, and more particularly, to permeable cement compositions and methods for forming consolidated permeable cement masses in well bores to prevent sand influx into the well bores with produced fluids. In one embodiment, the permeable cement compositions of the present invention comprise a hydraulic cement, water, and a degradable material capable of undergoing an irreversible degradation downhole.Type: GrantFiled: June 27, 2003Date of Patent: April 25, 2006Assignee: Halliburton Energy Services, Inc.Inventor: Philip D. Nguyen
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Patent number: 7004256Abstract: Cement compositions, that comprise water, a cement, a strength-retrogression additive, and an acid, wherein the acid comprises ethylenediamine tetra acetic acid, nitrilotriacetic acid, or a combination thereof, are provided. Methods of cementing in a subterranean formation, methods of retarding the set time of a cement composition, and set retarder compositions also are provided.Type: GrantFiled: October 11, 2004Date of Patent: February 28, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, James F. Heathman, Dennis W. Gray, Bryan K. Waugh
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Patent number: 6983800Abstract: Methods, cement compositions and oil suspensions of powders are provided. The oil suspensions of silica powder comprise silica powder, mineral oil, an oleophilic clay, an oleophilic surfactant and a hydrophilic surfactant.Type: GrantFiled: October 29, 2003Date of Patent: January 10, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Ronney R. Koch, Bobby J. King
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Patent number: 6953505Abstract: The present invention relates to stable and biodegradable foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foaming and stabilizing additive comprising a mixture of a capryl/capramido propyl betaine surfactant and a capryl/capramido propyl dimethyl amine oxide surfactant.Type: GrantFiled: August 19, 2004Date of Patent: October 11, 2005Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, D. Chad Brenneis, Bobby J. King
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Patent number: 6953090Abstract: Methods of cementing subterranean zones using cement compositions containing biogradable dispersants are provided. The methods are basically comprised of the steps of preparing a hydraulic cement, a biodegradable dispersant comprised of polyaspartic acid containing side chains formed by reacting one or more side chain chemicals with said polyaspartic acid and sufficient water to form a pumpable slurry, placing the cement composition into a zone to be cemented and allowing the cement composition to set into an impermeable solid mass therein.Type: GrantFiled: November 17, 2003Date of Patent: October 11, 2005Assignees: Halliburton Energy Services, Inc., Degussa Construction Polymers GmbHInventors: Jan Pieter Vijn, Christian E. Spindler, Gregor Keilhofer, Johann Plank
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Patent number: 6916369Abstract: Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.Type: GrantFiled: March 10, 2003Date of Patent: July 12, 2005Assignee: W. R. Grace & Co.-Conn.Inventors: Byong-wa Chun, Benita Dair, Charlotte B. Porteneuve, Ara Avedis Jeknavorian, Josephine Ho-Wah Cheung, Lawrence R. Roberts
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Patent number: 6855201Abstract: A cement composition is basically comprised of a hydraulic cement, water in an amount sufficient to form a pumpable slurry and a fluid loss control polymer additive comprised of 69 weight % of the calcium salt of 2-acrylamido-2-methyl propane sulfonic acid, 14 weight % of the calcium salt of maleic acid, 14 weight % of N-vinyl caprolactam and 3 weight % of 4-hydroxybutyl vinyl ether.Type: GrantFiled: November 14, 2003Date of Patent: February 15, 2005Assignee: Halliburton Energy Services, Inc.Inventors: Larry S. Eoff, Krista L. Keener
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Patent number: 6843846Abstract: Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a hydraulic cement, sufficient water to form a slurry and a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid. The cement composition is placed in the subterranean zone to be cemented and allowed to set into an impermeable solid mass therein.Type: GrantFiled: November 6, 2003Date of Patent: January 18, 2005Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, D. Chad Brenneis, Dennis W. Gray, Krista L. Keener
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Publication number: 20040261993Abstract: This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean applications, and more particularly, to permeable cement compositions and methods for forming consolidated permeable cement masses in well bores to prevent sand influx into the well bores with produced fluids. In one embodiment, the permeable cement compositions of the present invention comprise a hydraulic cement, water, and a degradable material capable of undergoing an irreversible degradation downhole.Type: ApplicationFiled: June 27, 2003Publication date: December 30, 2004Inventor: Philip D. Nguyen
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Publication number: 20040255824Abstract: The present invention relates to mineral binders such as hydraulic binders, for example cements or mortars, with improved ageing.Type: ApplicationFiled: August 16, 2004Publication date: December 23, 2004Inventors: Daniel Joubert, Mustapha Sari, Quintino de Carvalho
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Publication number: 20040255825Abstract: An alkali-free accelerator for use with spray-applied cementitious compositions such as concrete and mortar is the reaction product in aqueous medium of amorphous aluminium hydroxide, aluminium sulphate, formic acid and phosphoric acid. These accelerators perform as well as known alkali-free accelerators and are exceptionally stable, even in hot conditions.Type: ApplicationFiled: August 17, 2004Publication date: December 23, 2004Inventor: Terje Angelskaar
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Publication number: 20040237835Abstract: These and other objects of the present invention are achieved by an anti-corrosive additive composition comprised of an alkali based salt of dioic acid and a defoaming agent selected from the group consisting of polyether modified polysilicones and tri-alkane/alkene phosphates and mixtures thereof.Type: ApplicationFiled: November 6, 2003Publication date: December 2, 2004Inventors: Philip S. Rhodes, Jason S. Tuerack, Leonid Izrailev, David G. Rosenberg
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Publication number: 20040237834Abstract: There is described a dialkali based salt solution of dioic acid as an anti-corrosive additive alone or in admixture in an effective amount with another composition such as concrete.Type: ApplicationFiled: May 29, 2003Publication date: December 2, 2004Inventors: Eugene B. Humphrey, Michael S. Rhodes, James Humphrey, Philip Rhodes, Leonid Izrailev
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Patent number: 6824607Abstract: The invention relates to a novel cement-bound material with a mineral binding agent, a mineral filler and/or mineral aggregates. Said cement-bound material has a proportion of a mass hydrophobing agent comprised of stearates, siliconates, silanes or siloxanes ranging from 0.5 to 20 wt. % with regard to the weight of the mineral binding agent. The cement-bound material also has a proportion of a corrosion inhibitor, which is capable of migrating and which is comprised of nitrites, benzoates, amio alcohols or of sodium monofluorophosphates ranging from 01. to 20 kg per m3 of the active substance, and/or has a proportion of flexible fibers.Type: GrantFiled: November 25, 2002Date of Patent: November 30, 2004Inventors: Martin Baeuml, Giovanni Martinola
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Patent number: 6793730Abstract: The present invention provides improved methods for cementing. The methods are basically comprised of the steps of preparing a cement composition comprised of hydraulic cement, water, gas, surfactants, a cement early strength accelerator and a mildly set retarding cement dispersing agent, placing the cement composition in the annulus between the casing string and the well bore and allowing the cement composition to set into a hard impermeable mass. The cement composition used can alternatively comprise hydraulic cement, a water reducing additive, a dispersing additive, a set accelerating additive and water. Also, the cement composition can be made environmentally benign by using water reducing and dispersing additives, set retarding additives, and compressive strength and set accelerating additives which are environmentally degradable.Type: GrantFiled: June 4, 2003Date of Patent: September 21, 2004Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Ronald J. Crook, Russell M. Fitzgerald, Bryan K. Waugh
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Publication number: 20040168803Abstract: Cementing compositions and methods of cementing in a subterranean formation are provided. The cement composition includes a hydraulic cement, lightweight beads, and a desegregating agent for inhibiting segregation of the beads. The lightweight beads may be, for example, cenospheres, glass spheres, and ceramic spheres. The desegregating agent comprises a particulate substrate such as precipitated silica. It also comprises a polar molecule producing chemical disposed on the particulate substrate. Preferably, the polar molecule producing chemical is absorbed on the particulate substrate. The polar molecule producing chemical comprises at least one of a polar molecule producing acid such as glacial acetic acid, a salt of such an acid, and an acid anhydride. The method of cementing includes forming a pumpable slurry using the cement composition, pumping the slurry into a subterranean formation, and allowing the slurry to set.Type: ApplicationFiled: February 28, 2003Publication date: September 2, 2004Inventors: B. Raghava Reddy, Sears T. Dealy
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Publication number: 20040168802Abstract: Methods of cementing in subterranean formations, cement compositions, and methods for making the compositions are provided. A cement slurry is passed into a subterranean formation, and a swelling agent is passed into the subterranean formation to reduce an amount of water flowing into the cement slurry. The swelling agent may be combined with a carrier fluid before being displaced into the subterranean formation. Alternatively, the swelling agent may be pre-mixed with the cement slurry to form a new cement composition, followed by displacing the cement composition into the subterranean formation. The swelling agent is present in an amount effective to, upon absorption of water and swelling to form a gel mass, substantially block the flow path of the water into the cement composition or reduce losses to low pore pressure intervals, thereby preventing the integrity of the cement composition from being compromised or lost to voidage, fractures, fissures, etc.Type: ApplicationFiled: February 27, 2003Publication date: September 2, 2004Inventors: Prentice G. Creel, Charles L. Boatman, Richard H. Tate, Eldon Dwyann Dalrymple, Stephen P. Luscombe, John L. Eubank
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Patent number: 6776832Abstract: Coating compositions containing an oxidized oil and an effective amount of a diluent selected from one of: the group of methyl and ethyl esters of fatty acids, oils and combinations thereof; the group of glycerol and polyglycerol esters of fatty acids, oils, and combinations thereof; and light petroleum oil with a viscosity from about 1 cP to about 100 cP at 100° F., wherein the coating composition has a viscosity of from about 3 cP to about 5000 cP at 140° F., and wherein the coating composition is effective for reducing dust formation and cake formation in the coated free-flowing dry material. The coating compositions and associated methods of the present invention are particularly suited to reduce dust formation and cake formation in free-flowing dry materials.Type: GrantFiled: November 26, 2002Date of Patent: August 17, 2004Assignee: ARR-MAZ Products, L.P.Inventors: Stacy K. Spence, M. Roger Rixom
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Patent number: 6761765Abstract: An admixture for cementitious compositions for imparting water repellant properties to the cementitious composition. The admixture comprises a polymer, a surfactant, and a hydrophobic material that is an organic ester of an aliphatic carboxylic acid. Also, a cementitious composition comprising cement, a polymer, a surfactant, and a hydrophobic material that is an organic ester of an aliphatic carboxylic acid. Also, a method of forming a cementitious composition comprising mixing a cement, a polymer, a hydrophobic material, a surfactant, and water.Type: GrantFiled: May 24, 2001Date of Patent: July 13, 2004Assignee: Construction Research & Technology GmbHInventor: Runhai Lu
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Patent number: 6758897Abstract: Synthetic polymer reinforcing fibers provide dispersability and strength in matrix materials such as concrete, masonry, shotcrete, and asphalt. The individual fiber bodies, substantially free of stress fractures and substantially non-fibrillatable, have generally quadrilateral cross-sectional profiles along their elongated lengths.Type: GrantFiled: December 11, 2002Date of Patent: July 6, 2004Assignee: W. R. Grace & Co.-Conn.Inventors: Klaus-Alexander Rieder, Neal S. Berke, Michael B. Macklin, Anandakumar Ranganathan
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Publication number: 20040118324Abstract: The present invention provides a cement admixture that comprises at least one of a carboxylic acid based copolymer comprising a reactive surfactant as a monomer or a copolymer salt obtained by neutralizing the copolymer with an alkaline substance, a method for preparing the same, and a cement composition comprising the same.Type: ApplicationFiled: December 10, 2003Publication date: June 24, 2004Applicant: LG CHEM, LTD.Inventors: Byeong-Gil Choi, Dong-Kyu Kang, Kwang-Myung Park, Jong-Keun Song, Chan-Young Lee, Hee-Bong Song, Chang-Yeob Lee, Dong-Duck No, Dae-Joong Kim
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Patent number: 6739806Abstract: The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss control additive comprising at least two polymers connected by a pH-sensitive crosslink. Optionally, other ingredients may be included in the compositions.Type: GrantFiled: June 13, 2003Date of Patent: May 25, 2004Assignee: Halliburton Energy Services, Inc.Inventors: Michael J. Szymanski, Larry S. Eoff, John Michael Wilson, Samuel J. Lewis
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Publication number: 20040089204Abstract: The invention relates to a novel cement-bound material with a mineral binding agent, a mineral filler and/or mineral aggregates. Said cement-bound material has a proportion of a mass hydrophobing agent comprised of stearates, siliconates, silanes or siloxanes ranging from 0.5 to 20 wt. % with regard to the weight of the mineral binding agent. The cement-bound material also has a proportion of a corrosion inhibitor, which is capable of migrating and which is comprised of nitrites, benzoates, amio alcohols or of sodium monofluorophosphates ranging from 01. to 20 kg per m3 of the active substance, and/or has a proportion of flexible fibers.Type: ApplicationFiled: November 25, 2002Publication date: May 13, 2004Inventors: Martin Baeuml, Giovanni Martinola
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Publication number: 20040055512Abstract: The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for mixing fibers with cement.Type: ApplicationFiled: September 23, 2002Publication date: March 25, 2004Inventor: Richard W. Nagler
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Publication number: 20040055513Abstract: The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for mixing fibers with cement.Type: ApplicationFiled: January 31, 2003Publication date: March 25, 2004Inventor: Richard W. Nagler
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Patent number: 6709508Abstract: Dry mortar formulations comprising a) from 0.5 to 80% by weight of hydraulic binder, b) from 0 to 97% by weight of fillers, c) from 0 to 3.5% by weight of thickeners, d) from 1.0 to 80% by weight of redispersible polymer powder, and e) from 0.0001 to 1.0% by weight of antioxidants exhibit improved tensile strength and other set mortar properties, particularly after storage of the dry mortar composition.Type: GrantFiled: May 14, 2002Date of Patent: March 23, 2004Assignee: Wacker Polymer Systems GmbH & Co. KGInventors: Ulf Dietrich, Theo Mayer
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Publication number: 20040035331Abstract: The invention concerns a cementing composition for cold zones cementing operations in an oil well or analogous, said composition comprising a aqueous fluid base, solid particles including cement particles, and a dispersing agent in solution in the aqueous fluid base, said dispersing agent having a comb-like structure composed of a graft copolymer, said graft copolymer being constituted by a backbone carrying grafted chains.Type: ApplicationFiled: March 20, 2003Publication date: February 26, 2004Inventor: Edgar Volpert
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Publication number: 20040011258Abstract: Herein is disclosed an admixture, for concrete, gypsum panels, and other cementitious products, derived from fermentation still bottoms. The admixture typically comprises protein, glycerol, and lactate, as well as smaller amounts of other alcohols, sugars, and other organic acids. The admixture may be present as a solution (typically comprising about 30-50 wt % solids) or as a dry mixture. The admixture allows increased flow and reduced water use in concrete and gypsum slurries used in gypsum panel production. Concrete, cement, and gypsum premixes, ready-mixes, and poured structures are disclosed.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Inventors: Andrew J. Hoffman, Michael D. Harrison
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Patent number: 6660080Abstract: The present invention provides particulate flow enhancing additives for improving the flow properties of dry particulate cementitious materials. The particulate flow enhancing additives basically comprise a particulate solid adsorbent material having a flow inducing chemical adsorbed thereon.Type: GrantFiled: September 27, 2002Date of Patent: December 9, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Baireddy R. Reddy, Ronald E. Sweatman, James F. Heathman, Russell M. Fitzgerald, Ronald J. Crook
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Patent number: 6656266Abstract: Cementing compositions which are particularly suitable for squeeze cementing operations, comprise an aqueous phase, and a micro-cement, the aqueous phase including an aqueous suspension comprising a vinyl acetate type polymer obtained by chemically cross-linking a polyvinyl compound, a nanolatex and an anionic surfactant with a cloud point of more than 80° C.Type: GrantFiled: September 20, 2001Date of Patent: December 2, 2003Assignee: Schlumberger Technology CorporationInventors: Véronique Barlet-Gouedard, Pierre Maroy, Bruno Langlois, Roland Reeb
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Patent number: 6645292Abstract: Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a hydraulic cement, sufficient water to form a slurry and a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid. The cement composition is placed in the subterranean zone to be cemented and allowed to set into an impermeable solid mass therein.Type: GrantFiled: May 9, 2003Date of Patent: November 11, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, D. Chad Brenneis, Dennis W. Gray, Krista L. Keener
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Publication number: 20030200903Abstract: A method for promoting cement or concrete set on demand for concrete that has been chemically retarded by adding carbon fiber to the concrete, which enables it to become electrically conductive, sodium tartrate retardant, and copper sulfate which forms a copper tartrate complex in alkaline concrete mixes. Using electricity, the concrete mix anodically converts the retarding tartrate to an insoluble polyester polymer. The carbon fibers act as a continuous anode surface with a counter electrode wire embedded in the mix. Upon energizing, the retarding effect of tartrate is defeated by formation of the polyester polymer through condensation esterification thereby allowing the normal set to proceed unimpeded.Type: ApplicationFiled: April 29, 2002Publication date: October 30, 2003Inventor: Alfred J. Mattus
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Patent number: 6630021Abstract: The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The cement composition basically comprises hydraulic cement, water, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive and an environmentally degradable compressive strength and set accelerating additive.Type: GrantFiled: August 7, 2002Date of Patent: October 7, 2003Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Russell M. Fitzgerald
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Publication number: 20030172850Abstract: Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate superplasticizer, a corrosion inhibitor, a set retard, a set accelerator, etc.), or a mixture thereof. Exemplary methods for obtaining microbiologically or enzymatically converted sugar acids are also described herein.Type: ApplicationFiled: March 10, 2003Publication date: September 18, 2003Inventors: Byong-wa Chun, Benita Dair, Charlotte B. Porteneuve, Ara Avedis Jeknavorian, Josephine Ho-Wah Cheung, Lawrence R. Roberts
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Patent number: 6610139Abstract: Methods of preparing a particulate flow enhancing additive are provided. The methods are basically comprised of preparing a particulate flow enhancing additive for improving the flow properties of particulate cementitious materials comprising adsorbing a flow inducing chemical on a particulate solid adsorbent material.Type: GrantFiled: September 27, 2002Date of Patent: August 26, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Baireddy R. Reddy, Ronald E. Sweatman, James F. Heathman, Russell M. Fitzgerald, Ronald J. Crook
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Patent number: 6591910Abstract: Methods and compositions for cementing subterranean zones penetrated by well bores are provided. The methods are basically comprised of the steps of providing a cement composition which comprises a hydraulic cement, sufficient water to form a slurry and a dispersing agent comprising a tetrapolymer formed of methacrylic acid, methacrylate, methallyl sulfonic acid and ethoxylated acrylic acid. The cement composition is placed in the subterranean zone to be cemented and allowed to set into an impermeable solid mass therein.Type: GrantFiled: January 29, 2003Date of Patent: July 15, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, D. Chad Brenneis, Dennis W. Gray, Krista L. Keener
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Publication number: 20030121456Abstract: Oil-based settable spotting fluid compositions for cementing in wells and subterranean formations are provided. The oil-based settable spotting fluid compositions basically comprise an oil external emulsion comprising oil, water and an emulsifying surfactant, a hydraulically settable component and a de-emulsifying surfactant for de-emulsifying the oil-external emulsion when the emulsion is cured.Type: ApplicationFiled: December 16, 2002Publication date: July 3, 2003Inventors: James E. Griffith, Jiten Chatterji, Bobby J. King, John L. Dennis
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Patent number: 6565645Abstract: A hydraulic setting composition is provided. The composition when set has improved water absorption properties. The composition contains a hydraulically setting inorganic material such as calcium sulfate and an auxiliary of the formula A(—X[—CH2]p—ZY)k where A can be a linear or branched C1-24 alkyl group, a linlear or branched C2-24 alkenyl group each of which can be unsubstituted or substituted with 1 to 4 OH group, C6-24 aryl group and alkyl substituted C6-24 aryl groups each; having a valance K, Z is SO3 or COO−, Y is a proton, a metal ion or ammonium, P is from 1 to 30 and X is identical or different and can be where n is from 0-30, m is from 2 to 8, K is from 1 to 4, q is from 1-10, L is O, S or UR3, R2 and R3 are identical or different, linear or branched C1-12 alkyl or a polymer having a molecular weight (Mn) of at least 300 and contains anionic, cationic or anionic and cationic monomer units.Type: GrantFiled: December 12, 2000Date of Patent: May 20, 2003Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Johann Klein, Gaby Schilling, Thomas Fandel, Wolfgang Klauck, Hans-Peter Sattler
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Patent number: 6554894Abstract: A masonry cement composition is provided which contains a blend of fly ash, Portland cement, a retarding agent, and an air entrainment agent. The masonry cement composition may be formed into a mortar having a high air content which exhibits good compressive strength and does not exhibit efflorescence.Type: GrantFiled: June 13, 2001Date of Patent: April 29, 2003Assignee: Mineral Resource Technologies, LLCInventors: Robert William Styron, Richard George Basaraba, James Kenneth Hicks
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Patent number: 6537366Abstract: A composition for coloring concrete and methods for making the composition is provided, which includes a hydrophobic efflorescence control agent selected from the group consisting of calcium stearates, zinc stearates, sodium stearates, butyl stearate, stearic acid derivatives, stearic acid salts, and a mixture thereof, a particulated polymer selected from the group consisting of styrene-based polymers and copolymers, acrylic-based polymers and copolymers, polyvinyl acetates, polyepoxides, polyurethanes, butadiene rubbers, and a mixture thereof; and a colorant, wherein the composition improves the durability of the concrete while enhancing the durability and retention of said colorant.Type: GrantFiled: December 26, 2000Date of Patent: March 25, 2003Assignee: Color & Chemical Technologies, Inc.Inventor: William W. Supplee, Sr.
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Patent number: 6514327Abstract: Described are liquid setting and hardening accelerators for hydraulic binders and such binder comprising mixtures that preferably are alkali-free and chloride-free and that do not comprise any basic features. The setting accelerators comprise as components aluminum salts, complexing agents, corrosion inhibitors and optionally inorganic and/or organic thickening or thixotropic agents. In comparison with the use of alkaline accelerators, an essential reduction in the setting time and a faster development of high compressive strengths is achieved by the accelerators of the present invention. In comparison with commercially available alkali-free accelerators solid precipitates of aluminum salts and thereby generated plugging up of the spray nozzles is avoided and the corrosion at the spraying devices is eliminated. Said advantages result in a great economic advantage due to less maintenance needed for the devices and less interruptions of work.Type: GrantFiled: October 27, 2000Date of Patent: February 4, 2003Assignee: Sika AG, vorm. Kaspar Winkler & Co.Inventors: Theodor A. Bürge, Marcel Sommer, Franz Wombacher
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Patent number: 6511537Abstract: Systems for retarding setting in an oilfield well cement slurry comprise a solution of a phosphonate selected from methylene phosphonic acid derivatives and a phosphate, in particular selected from the following salts or the corresponding acids: mono-phosphates (ortho-phosphates PO42; meta-phosphates PO3), acyclic poly-phosphates (pyrophosphates P2O74, tripolyphosphates P3O105) or cyclic poly-phosphates. The system preferably may also comprise a retarder booster and is more particularly applicable to cementing at low or medium temperatures.Type: GrantFiled: October 20, 2000Date of Patent: January 28, 2003Assignee: Schlumberger Technology CorporationInventors: Véronique Barlet-Gouedard, Fabien J. Brand, Pierre Maroy, Frederik Nilsson
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Publication number: 20030006038Abstract: The present invention provides improved compositions and methods for cementing casing strings in deep water offshore formations penetrated by well bores. The cement composition basically comprises hydraulic cement, water, an environmentally degradable water reducing and dispersing additive, an environmentally degradable set retarding additive and an environmentally degradable compressive strength and set accelerating additive.Type: ApplicationFiled: August 7, 2002Publication date: January 9, 2003Inventors: B. Raghava Reddy, Russell M. Fitzgerald
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Publication number: 20020188089Abstract: Alkoxylated acrylate and methacrylate macromonomers are disclosed that are useful in the preparation of water-reducing additives for concrete, ultraviolet light-curable adhesives, and water-dispersed polyurethanes. The macromonomers are suitably prepared by alkoxylating a hydroxyalkylacrylate or hydroxyalkylmethacrylate in the presence of a DMC catalyst using the continuous addition of starter (CAOS) in order to prevent the formation of by-products during the fabrication of the macromonomer.Type: ApplicationFiled: February 20, 2001Publication date: December 12, 2002Inventor: Jianzhong Shen
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Patent number: 6488763Abstract: The present invention provides methods of cementing subterranean zones using cement compositions comprising calcium aluminate, fly ash, sodium polyphosphate and water.Type: GrantFiled: October 5, 2001Date of Patent: December 3, 2002Assignee: Halliburton Energy Services, Inc.Inventors: Lance E. Brothers, Susan M. Turkett, Barry B. Ekstrand, D. Chad Brenneis, Jerry D. Childs