Inventor: Roger S. Cromwell

Address: Walters, OK
No. of patents: 79
Last patent issue date: 08/04/2009

Number	Title	Issue Date
7569108	Prevention of latex inversion in saltwater cement compositions for use in subterranean formations and associated compositions The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a fir...	08/04/2009
7413014	Foamed fly ash cement compositions and methods of cementing Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, ...	08/19/2008
7404855	Resilient cement compositions and methods of cementing Resilient cement compositions and methods of cementing using the compositions are disclosed. A resilient cement composition of the invention comprises hydraulic cement, an aqueous rubber latex and a rubber latex stabilizing surfactant comprising an iso-dodecyl alcoh...	07/29/2008
7363977	Prevention of latex inversion in saltwater cement compositions for use in subterranean formations and associated methods The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a fir...	04/29/2008
7296626	Liquid additive for reducing water-soluble chromate Methods for cementing and cement compositions are provided, wherein the cement composition comprises cementitious material and an aqueous suspension of zeolite and a chromate reducing agent. ...	11/20/2007
7255170	Foamed cement compositions, additives, and associated methods Exemplary embodiments relate to cementing operations and, more particularly, to foamed cement compositions, foaming and stabilizing additives, and associated methods. A foaming and stabilizing additive, that comprises a mixture of an alkali salt of an alkyl ether su...	08/14/2007
7229492	Cement compositions comprising improved lost circulation materials and methods of use in subterranean formations Cement compositions that include improved lost circulation materials are provided. In certain exemplary embodiments, the improved lost circulation materials include inelastic particles of polyethylene, polystyrene, and/or polypropylene. Optionally, the cement compos...	06/12/2007
7174961	Methods of cementing using cement compositions comprising basalt fibers Methods of using cement compositions that comprise basalt fibers in subterranean formations are provided. An example of such a method may comprise providing a cement composition that comprises water, a hydraulic cement, and a plurality of basalt fibers; introducing ...	02/13/2007
7022755	Resilient cement compositions and methods of cementing Resilient cement compositions and methods of cementing using the compositions are disclosed. A resilient cement composition of the invention comprises hydraulic cement, an aqueous rubber latex and a rubber latex stabilizing surfactant comprising an iso-dodecyl alcoh...	04/04/2006
7013975	Foamed cement slurries, additives and methods The present invention relates to 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 an environmentally benign foaming and stabilizi...	03/21/2006
7008479	Methods and cement compositions for cementing in subterranean zones Methods of cementing in subterranean zones, improved cement compositions and improved additives are provided. The compositions are basically comprised of a hydraulic cement, sufficient water to form a slurry and an additive for providing improved rheology, fluid los...	03/07/2006
6982000	Cement compositions including silane treated amorphous silica The present invention provides improved cement compositions comprising hydraulic cement, silica hydrophobicized with a mixture of organosilicon compounds and water. ...	01/03/2006
6979366	Methods of cementing pipe in well bores and low density cement compositions therefor The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement, sufficien...	12/27/2005
6978834	Foamed and non-foamed cement compositions including silane treated amorphous silica and methods The present invention provides improved methods of cementing and cement compositions. A cement composition of the invention comprises hydraulic cement, silica hydrophobicized with a mixture of organosilicon compounds and water which upon hardening has high shear bon...	12/27/2005
6902002	Cement compositions comprising improved lost circulation materials and methods of use in subterranean formations The present invention relates to subterranean cementing operations and, more particularly, to cement composition that include improved lost circulation materials, and methods of using such cement compositions in subterranean formations. In certain exemplary embodime...	06/07/2005
6899177	Methods of cementing subterranean zones with cement compositions having enhanced compressive strengths Methods of cementing subterranean zones penetrated by well bores using cement compositions having enhanced compressive strengths are provided. A method of the invention basically comprises the steps of preparing or providing a cement composition having enhanced comp...	05/31/2005
6881708	Compositions for solving lost circulation problems A method and composition is provided for sealing a subterranean zone penetrated by a well bore and restoring lost circulation, wherein the composition basically comprises a mixture of latex, melamine-formaldehyde resin, and a catalyst. ...	04/19/2005
6858566	Methods of generating gas in and foaming well cement compositions The present invention relates to methods of generating gas in and forming cement compositions that may be introduced into a subterranean zone. A method of the present invention provides a method of generating gas in a cement composition that comprises providing the ...	02/22/2005
6840319	Methods, compositions and biodegradable fluid loss control additives for cementing subterranean zones Methods, compositions and fluid loss control additives for cementing in subterranean zones are disclosed. A composition comprises a hydraulic cement, sufficient water to from a slurry and a water soluble biodegradable fluid loss control additive comprising a mixture...	01/11/2005
6797054	Foamed well cement slurries, additives and methods The present invention provides improved foamed well cement slurries, additives and methods. The foamed well cement slurries are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, sufficient gas to form a foam and an effective amou...	09/28/2004
6767867	Methods of treating subterranean zones penetrated by well bores The present invention provides methods of treating subterranean zones penetrated by well bores in primary well cementing operations, well completion operations, production stimulation treatments and the like. The methods are basically comprised of introducing into t...	07/27/2004
6708760	Methods and cement compositions for cementing in subterranean zones Methods of cementing in subterranean zones, improved cement compositions and improved additives are provided. The compositions are basically comprised of a hydraulic cement, sufficient water to form a slurry and an additive for providing improved rheology, fluid los...	03/23/2004
6681856	Methods of cementing in subterranean zones penetrated by well bores using biodegradable dispersants The present invention provides methods of cementing subterranean zones penetrated by well bores using biodegradable dispersants. A cement composition of the invention comprises a hydraulic cement, sufficient water to form a slurry and a water soluble biod...	01/27/2004
6641660	Stable well cementing methods and compositions The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic ...	11/04/2003
6593402	Resilient well cement compositions and methods The present invention provides improved compositions and methods for sealing pipe in a well bore. The compositions which harden into highly resilient solid masses having high strengths are basically comprised of a hydraulic cement, an aqueous rubber latex...	07/15/2003
6555507	Sealing subterranean zones The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of water, an aqueous rubber latex, an organophillic clay, sodium carbonate, an epoxy resin ...	04/29/2003
6547871	Foamed well cement slurries, additives and methods The present invention provides improved foamed well cement slurries, additives and methods. The foamed well cement slurries are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, sufficient gas to form a foam and an eff...	04/15/2003
6516883	Methods of cementing pipe in well bores and low density cement compositions therefor The present invention provides methods of cementing pipe in well bores and low density cement compositions having enhanced compressive, tensile and bond strengths upon setting. The composition of the invention are basically comprised of a hydraulic cement...	02/11/2003
6516884	Stable well cementing methods and compositions The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic ...	02/11/2003
6508306	Compositions for solving lost circulation problems A method and composition is provided for sealing a subterranean zone penetrated by a well bore and restoring lost circulation, wherein the composition basically comprises a mixture of latex, melamine-formaldehyde resin, and a catalyst....	01/21/2003
6502636	Methods and compositions for grouting heat exchange pipe The present invention provides improved methods and compositions for grouting heat exchange pipe in a hole or trench in the ground. The grouting compositions of the invention have quick set and high thermal conductivity properties and are basically compri...	01/07/2003
6503870	Sealing subterranean zones The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. One composition of the invention is comprised of water, a silane coupling agent, an organophilic clay, an epoxy resin and a hardenin...	01/07/2003
6500252	High strength foamed well cement compositions and methods High strength foamed well cement compositions and methods of cementing subterranean zones penetrated by well bores are provided. The foamed well cement compositions are basically comprised of a hydraulic cement, hydrophilic fibers, water sufficient to for...	12/31/2002
6460632	Methods of drilling well bores Improved methods of drilling well bores utilizing foamed aqueous drilling fluids are provided. The methods basically comprise circulating an aqueous drilling fluid containing a single foaming and defoaming surfactant and a gas downwardly through a rotary ...	10/08/2002
6448206	Sealing subterranean zones The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. One composition of the invention is comprised of water, an aqueous rubber latex, an organophilic clay, sodium carbonate, an epoxy re...	09/10/2002
6417142	Defoaming methods and compositions The present invention provides methods and defoaming compositions for preventing the formation of foam or the entrainment of gas in a liquid fluid or for breaking a previously formed liquid fluid foam. The defoaming compositions of the invention are basic...	07/09/2002
6401817	Sealing subterranean zones The present invention provides improved compositions and methods of using the compositions for sealing subterranean zones. One composition of the invention is comprised of water, an aqueous rubber latex, an organophilic clay, sodium carbonate, an epoxy re...	06/11/2002
6367550	Foamed well cement slurries, additives and methods The present invention provides improved foamed well cement slurries, additives and methods. The foamed well cement slurries are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, sufficient gas to form a foam and an eff...	04/09/2002
6367549	Methods and ultra-low density sealing compositions for sealing pipe in well bores The present invention provides methods and ultra-low density sealing compositions for sealing pipe in well bores penetrating formations which readily fracture at low hydrostatic pressures. A method of the invention basically comprises the steps of providi...	04/09/2002
6364945	Methods and compositions for forming permeable cement sand screens in well bores Methods and compositions for forming permeable cement sand screens in well bores are provided. The compositions are basically comprised of a hydraulic cement, an acid soluble particulate solid, a liquid hydrocarbon solvent soluble particulate solid, a par...	04/02/2002

«First «Previous1 2 Next»Last»

PatentStorm

Quotables

PatentStorm News

Inventor: Roger S. Cromwell