Rhodia Limited

Rhodia Operations

Rhodia Chimie

Rhone-poulenc Chimie

Schlumberger Technology Corporation

Institut Francais Du Pe'trole

Alstom Transport Technologies

Solvay USA Inc.

Sncf Voyageurs

Bruno Langlois

Gilles Guerin

Paul-Joel Derian

Manilal S Dahanayake

Jean-Pierre Marchand

Arnauld Ponce

Gary Woodward

Roland Reeb

Ruela Talingting Pabalan

Subramanian Kesavan

Marie-Pierre Labeau

Allwyn Colaco

Nemesio Martinez-Castro

Chris Jones

Alain Senechal

Floryan De Campo

Sylvie Touzet

Philip Dean Hill

Thomas Edwin Pruitt

Forrest Lee Sanders

Dominique Charmot

Arnaud Cadix

Pierre Maroy

Dominique Labarre

Christine Dalmazzone

Leo Zhaoqing Liu

Annie Audibert-Hayet

Robert Cantiani

Chi-Thanh Vuong

Pascale Corpart

Isabelle Vincent

Jo&euml;l Benchimol

Adedamola Adedeji

Emma Hills

Dominic Wai Kwing Yeung

V&eacute;ronique Barlet-Gouedard

Marie Pierre Labeau

Adendamola Adedeji

Richard Chavagnat

A method for replacing glycol-based mutual solvents in an oil field application comprising: obtaining an alternative solvent and solvent blends and replacing all or a portion a glycol-based mutual solvent, which forms a component of an oil field formulation, with the alternative solvent or solvent blends, wherein the oil field formulation can be utilized in an oil field application.

Use of environmentally friendly solvents to replace glycol-based solvents

A composition for enhancing fluid viscosity including a mixture of at least one cationic or cationizable polymer and at least one anionic or anionizable (hydrolysable) polymer. The composition has a zeta potential at 25&#xb0; C. in the range of 0.5 to 100 mV or &#x2212;0.5 to &#x2212;100 mV, typically 1 to 60 mV or &#x2212;1 to &#x2212;60 mV, or is a precursor convertible at a temperature of 100 to 250&#xb0; C. to the composition having a zeta potential at 25&#xb0; C. of 0.5 to 100 mV or &#x2212;0.5 to &#x2212;100 mV, typically 1 to 60 mV or &#x2212;1 to &#x2212;60 mV. Typically the compositions exhibit salt tolerance and interaction of both polymers at very high temperatures (&#x3e;300&#xb0; F.) such that the system exhibits an increase of viscosity at extreme temperatures. The compositions are useful for hydraulic fracturing, enhanced oil recovery, subterranean acidization, personal care as well as home and industrial cleaners.

Rheology modifier compositions and methods of use

A method for modifying the properties of a suspension of solid or liquid particles in an aqueous medium, includes the step of adding to the suspension or to the aqueous medium a polymer prepared by inverse emulsion polymerization of monomers A, comprising a betaine group, and of nonionic monomers Bincluded in an aqueous phase dispersed in the form of droplets in a hydrophobic external phase, wherein the molar ratio of the monomers Ato the monomers Bis from about 4/96 to about 40/60, the polymer exhibits an intrinsic viscosity of greater than 600 mL/g, the reduced specific viscosity being measured by dissolving the polymer in a 20% by weight aqueous NaCl solution.

Method for modifying the properties of an aqueous suspension

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.

Scale squeeze treatment systems and methods

There is a method for enhancing the recovery of oil from a reservoir. The method has the step of a) introducing a flooding fluid into the reservoir and b) extracting the oil through a wellbore at a location different than the point of introduction of the flooding fluid into the reservoir. The flooding fluid has water and an amount of one or more non-polymeric viscoelastic surfactants sufficient to provide an interfacial surface tension of about 1 mNm or less and a viscosity of about 10 cps or more. The one or more surfactants is selected from the group of one or more cationic surfactants, one or more zwitterionic surfactants, one or more amphoteric surfactants, one or more anionic surfactants, and combinations thereof.

Methods for recovering oil from an oil reservoir

Method for recovering oil from an oil reservoir

Oilfields are stimulated by injecting an inflow stream of a fluid into an oil producing well linked to the oilfield, displacing the oil and recovering an outflow stream of fluid comprising the oil, wherein at least two streams are injected into at least two production zones of an oil well or are injected into at least two different oil producing wells from which at least two outflow streams from the two zones or wells are combined before recovering, with a scale inhibitor having detectable moieties being introduced into the oilfield(s) and/or into the fluid, and wherein two different scale inhibitors are used, dedicated to the two zones or wells, said different scale inhibitors having different detectable moieties that can be distinguished by analysis.

Stimulating oilfields using different scale-inhibitors

A temperature-stable, non eco-toxic oil-base well fluid that is particularly suitable for high pressure/high temperature drilling comprises an emulsification system comprising at least one superamide that may or may not be polyalkoxylated, optionally associated with a non-ionic co-surfactant. The oil-base well fluid comprising such a system can be used at temperatures of up to about 200&#xb0; C. due to the production of highly temperature-stable reverse emulsions.

Oil-based drilling fluid comprising a temperature-stable and non-polluting emulsifying system

The present invention relates to a composition comprising at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micrometers; and at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers wherein the content of polyhydroxylated polymer, advantageously of polyol, expressed in mass percent, is at least equal to &#x215a;R&#x2212;20, with R equal to the ratio of the mean size (d) of the emulsion to that of the dispersion of polyhydroxylated polymer, advantageously of polyol.

Composition, for use in coatings, based on a mixture of emulsion(s) and of dispersion(s) of polyolpolymer and coating(s) produced therefrom

The present invention relates to a composition comprising at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micometers; and at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers wherein the content of polyhydroxylated polymer, advantageously of polyol, expressed in mass per cent, is at least equal to 5/6R-20, with R equal to the ratio of the mean size (d) of the emulsion to that of the dispersion of polyhydroxylated polymer, advantageously of polyol.

Composition, for use in coatings, based on a mixture of emulsion(s) and of dispersion(s) of polyol polymer and coating(s) produced therefrom

Growing community of inventors

Paris, France

Bruno Langlois