Dow Global Technolgoies LLC

Nalco/exxon Energy Chemicals,l.p.

Nalco Chemical Company

William Marsh Rice University

Nalco Company

Michael K Poindexter

Cole A Witham

Youdong Tong

Roger L Kuhlman

Vincent E Lewis

Robert D McClain

Stephen W King

Phillip S Athey

Paul Aaron Gillis

Joseph L Deavenport

Stephen M Hoyles

Duy T Nguyen

Aaron W Sanders

Carol E Mohler

Daniel H Emmons

James E Hitt

Cecile Boyer

M J Yanjarappa

Michael C Edwards

Samuel C Marsh

Jason S Moore

Matthew J Hansen

Felipe A Donate

Larry Thomas Watters

Harpreet Singh

Prashant Anil Tatake

Bernard E Obi

Michael J Radler

George J Hirasaki

Jorg Theuerkauf

Sayeed Abbas

John Beckerdite

Veronica K Braden

Elizabeth Babaian-Kibala

Clarence A Miller

Raymond M Jones

Nermeen W Aboelella

Christopher J Murphy

Domonique Downing

Aleksandr T Gamble

Kyle R Essenmacher

John Hera, Jr

Jeffrey Thomas Watters

Nathan Kyle Combs

Stephanie L Hughes

Thomas L Sanders, Jr

Olina G Raney

C Tom Rowe

Paul R Kraus

Cole Witham

Thomas L Sanders

Prashant Tatake

Duy Nguyen

John Hera Jr

The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene oxide polymers, in particular a mixture of one or more high molecular weight polyethylene oxide polymer and one or more ultra high molecular weight polyethylene oxide polymer. Said mixture of polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

Method of treating high-solids mineral slurries with polymeric flocculants

The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more epoxy or glycidyl ether functionalized hydrophobic monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

Treatment of aqueous mineral suspensions with polymeric flocculants

The present invention provides strategies for improved control of fluid loss, hydration, settling, and separation of aqueous cementing compositions over a wide temperature and time range. The present invention is based at least in part upon water-effusing particles used as additives for the compositions, wherein the particles are activated to control rheology when water soluble portions of the particles are released in the presence of water.

Aqueous cement compositions incorporating particles that are activated to control rheology when water soluble portions of the particles are released in the presence of water

The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene glycol and polyethylene oxide polymers, in particular a mixture of one or more low molecular mass polyethylene glycol with one or more high molecular mass polyethylene oxide. Said mixture of polyethylene glycol and polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

Flocculation of high-solids mineral slurries

The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more silane- or siloxane-functionalized glycidyl ether monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

Polymeric flocculants for treating aqueous mineral suspensions

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of a cationic vinyl imidazolium-based copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

Cationic vinyl imidazolium-based copolymer for separating an oil-in-water emulsion

Embodiments of the present disclosure include a method of separating an oil-in-water emulsion formed during crude oil production into a water phase and an oil phase that includes adding 1 part-per-million (ppm) to 10000 ppm of an N-vinylpyrrolidone based cationic copolymer to the oil-in-water emulsion, based on the total volume of the oil-in-water emulsion, to form a water phase and an oil phase, and separating the water phase from the oil phase.

N-vinylpyrrolidone-based cationic copolymer for separating an oil-in-water emulsion

The present invention relates to compositions and methods for reducing or preventing the loss of drilling fluids and other well servicing fluids into a subterranean formation during drilling or construction of boreholes in said formation. Specifically, this invention comprises a curable composition capable of free radical polymerization for creating lost circulation material in-situ. The curable composition comprises an organic compound capable of free radical (co)polymerization represented by the formula (I): wherein x is an integer from 1 to 8; Fp comprises one or more moiety comprising a free radical polymerizable group; L is an organic moiety comprising a (substituted) aromatic or (substituted) aliphatic group comprising one or more O, N, S, or combinations thereof; and Q comprises a substituted or unsubstituted mono- or polyvalent organic radical comprising one or one or more moiety selected from alkyl, alkylene, alkenyl, cycloalkyl, cycloalkylene, aryl, aralkyl, alkaryl, poly(oxyalkylene), poly(carboalkoxyalkylene), a substituted heterocyclic radical, or an unsubstituted heterocyclic radical.

Curable composition for use as lost circulation material

The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent comprising a polyaminopolyamide-epichlorohydrin resin, preferably the polyamino polyamide-epichlorohydrin resin is a reaction product of an aliphatic polyamine, an aliphatic polycarboxylic acid, and epichlorohydrin. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids.

Polyaminopolyamide-epichlorohydrin resins for use as clay and shale inhibition agents for the drilling industry

The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula: (I), R is an alkyl group having 1 to 6 carbons; Rmay be the same or different than R and is an alkyl group having 1 to 10 carbons or a hydroxy alkyl group comprising n number of carbons wherein n is an integer from 1 to 10 and n&#x2212;1 hydroxyl groups; Ris an alkyl group having 1 to 6 carbons; Rmay be the same or different than Rand is an alkyl group having 1 to 10 carbons or a hydroxy alkyl group comprising n number of carbons wherein n is an integer from 1 to 10 and n&#x2212;1 hydroxyl groups, with the proviso that Ris not the same as R; and X is an anion. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids. 

Clay and shale inhibition agents and method of use

The present invention relates to compositions and methods for reducing or preventing the loss of drilling fluids and other well servicing fluids into a subterranean formation during drilling or construction of boreholes in said formation. Specifically, this invention comprises a curable cross-linkable composition capable of free radical polymerization for creating lost circulation material. The curable cross-linkable composition comprises a mixture of:

Curable cross-linkable compositions for use as lost circulation material

The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula: (Formula I should be inserted here.) wherein R is hydrogen or an alkyl group having 1 to 12 carbons, Ris an alkylene group having 1 to 12 carbons, and Ris an alkyl group having 1 to 12 carbons. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids. 

Glycol ether amines for use as clay and shale inhibition agents for the drilling industry

Disclosed is a composition and a method for cementing a casing in a borehole of a well using an aqueous cementing composition comprising (a) water, (b) a cementing composition comprising (i) a hydraulic cement, (ii) a hydrophobically modified polymer, (iii) a dispersant, and optionally (iv) one or more other additives conventionally added to aqueous cementing compositions useful in cementing casings in the borehole of wells. Preferably the hydrophobically modified hydroxyethyl cellulose has an ethylene oxide molar substitution of from 0.5 to 3.5, a hydrophobe degree of substitution of from 0.001 to 0.025, and a weight-average molecular weight of from 500,000 to 4,000,000 Daltons and the dispersant is sulfonated polymer, melamine formaldehyde condensate, a naphthalene formaldehyde condensate, a branched or non-branched polycarboxylate polymer. Preferably, the aqueous cementing composition is pumped downwardly into said casing, pumped upwardly into the annulus surrounding said casing until said aqueous composition fills that portion of the annular space desired to be sealed, and then maintaining said aqueous cementing composition in place until the cement sets.

Cementing composition comprising nonionic hydrophobically-modified cellulose ethers and its use

The hydration of clays and shale in drilling operations may be inhibited by employing an aqueous based drilling fluid comprising a shale hydration inhibition agent having the formula wherein R is an alkyl group having 1 to 6 carbons, Ris an alkyl group having 1 to 18 carbons, and X is an anion. The shale hydration inhibition agent should be present in the aqueous based drilling fluid in sufficient concentration to reduce the reactivity, such as swelling, of clays and shale when exposed to water-based drilling fluids. 

Mono-quaternary amine alcohols for use of clay and shale inhibition agents for the drilling industry

Embodiments of the present disclosure include performing one or more oil recovery cycles that recovers oil from an oil containing reservoir. The one or more oil recovery cycles can include providing a flow of supercritical carbon dioxide to the oil containing reservoir, injecting a flow of a surfactant to the flow of supercritical carbon dioxide, where the supercritical carbon dioxide and the surfactant form a mixture, forming an emulsion of the mixture in water within the oil containing reservoir to control mobility of the supercritical carbon dioxide in the oil containing reservoir, reducing the flow of the surfactant to a reduced flow while maintaining the flow of the supercritical carbon dioxide to the oil containing reservoir, and recovering the oil displaced from the oil containing reservoir.

Oil recovery

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Sugar Land, TX, United States of America

Michael K Poindexter