Rhodia Operations

Energy Solutions (us) LLC

Schlumberger Technology Corporation

Rhodia Chimie

Specialty Operations France

Energysolutions, LLC

Arnaud Cadix

David James Wilson

Chi-Thanh Vuong

Mikel Morvan

Mathias Destarac

Marie-Pierre Labeau

Max Chabert

James Wilson

Lingjuan Shen

James David Wilson

Qi Qu

Subramanian Kesavan

Bruno Langlois

Herve Adam

Jian Zhou

Pierre Maroy

Pierre Marcel Ardaud

Ruela Talingting Pabalan

Ilias Iliopoulos

Thierry Badel

Cécile Bonnet-Gonnet

Rabih Rached

Patrick Moreau

Denis Bendejacq

David Monin

Françoise LaFuma

Dominique Hourdet

Helène Martin

Hajeeth Thankappan

Ruela Pabalan

Pierre Ardaud

Destarac Mathias

Modification of the rheology of a liquid medium, aqueous or nonaqueous, with polymers in the form of specific particles obtained by grinding (micronizing) a porous macrogel, itself prepared by a process comprising a radical polymerization step which comprises reacting in the presence of pore formers monomers containing monomers bearing at least two ethylenic unsaturations, typically in combination with monomers bearing a single ethylenic unsaturation; a polymerization initiator; and optionally a polymerization control agent. These polymer particles keep other particles in suspension within the liquid medium, and also the stabilized suspensions are obtained.

Rheology modification by porous gel particles

The instant invention friction reducer formulation comprising friction reducer polymers such as PAM within the dispersed phase of an inverse emulsion containing a composition C which comprises a mixture of: —at least an alkanolamide emulsifier; and —a block copolymer comprising: —a hydrophilic block A comprising units deriving from a mono-alpha-ethylenically-unsaturated monomers; and —a hydrophobic block B.

Stabilized friction reducer emulsions

This invention relates to the field of techniques for treating subterranean formations with gels during an oil or gas exploration or production operation, i.e., during drilling, completion, or hydraulic fracking processes. The invention relates in particular to a system making it possible to limit or even inhibit the phenomena known as loss of fluids (wager and/or gas) in an underground formation, particularly in a zone where the temperature is high. More particularly, the invention relates to a suspension (S) comprising:

Suspension of associative polymers for the treatment of underground formations

The present invention relates to the preparation of polymers that are of use in particular as a rheology agent, and are suitable for use in very concentrated saline media, which comprises a step of micellar radical polymerization in which are brought into contact, in an aqueous medium: &#x2014;hydrophilic monomers; &#x2014;hydrophobic monomers in the form of a micellar solution, containing micelles comprising these hydrophobic monomers; &#x2014;a radical polymerization initiator; and &#x2014;preferably an agent for controlling radical polymerization, wherein said micelles comprise at least one surfactant of amphoteric nature. The polymers obtained according to the invention are in particular of use for enhanced oil recovery.

Amphiphilic block polymers soluble in strongly saline medium

The present invention relates to the use of sequential copolymers (P), comprising at least one chain (C) capable of being obtained by micellar polymerization, for keeping solid particles (p) in suspension in a fluid (F) where said chain (C) is soluble.

Suspending agents obtained by micellar polymerization

The present invention relates to the field of oil extraction. More specifically, it relates to a particular polymerization process, which provides access to formulations of polymers that may be used in particular for modifying rheology and fluid loss control during extraction operations and that have a better heat stability.

Gelled aqueous composition for oil extraction

Polymeric systems useful for maintaining particle dispersions for extended periods of time.

Polymeric systems for particle dispersion

The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate in a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising at least three blocks, including: at least one first block which is adsorbed, preferably irreversibly, onto at least some of the particles (p); a second block (B) having a composition other than that of the first and a mean molecular weight of more than 10,000 g/mol, and which is soluble in the fluid (F); and at least one third block of type (A) or type (B).

Sequenced polymers for monitoring the filtrate

The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate and the rheology of a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising: a first block which is adsorbed onto at least some of the particles; and a second block having a composition other than that of the first block and a mean molecular weight of more than 10,000 g/mol, for example more than 100,000 g/mol, and which is soluble in the fluid.

Sequenced polymers for monitoring the filtrate and the rheology

The present invention relates to the use of a combination of block polymers and particular compositions in a fluid injected under pressure into an oil-bearing rock, where: the fluid comprises solid particles and/or is brought into contact with solid particles within the oil-bearing rock following the injection thereof, the combination comprises (i) a polymer comprising: &#x2014;a first block that is adsorbed on at least a portion of the particles; and &#x2014;a second block, having a composition different from that of the first, and having a weight-average molecular weight of greater than 10 000 g/mol, for example greater than 100 000 g/mol, and that is soluble in the fluid; (ii) particles suitable for providing a gas barrier effect, preferably a latex and/or silica particles.

Combination for filtrate control and gas migration

The present invention relates to the use of amphiphilic sequenced copolymers as an agent for controlling the filtrate in a fluid (F) injected under pressure into an underground formation, comprising&#x2014;at least one chain (C) soluble in the fluid (F); and&#x2014;at least one block (B) that is insoluble in the fluid (F).

Amphiphilic polymers for filtrate control

The present invention relates to the use of a block polymer as fluid loss control agent in a fluid injected under pressure into an oil-bearing rock, where:

Block polymers for fluid loss control

The present invention relates to the formation of a gel within a medium M, in particular within an underground formation, which comprises the following steps: (EI) a basic compound C is added to a fluid latex L comprising dispersed particles of a polymer P, bearing ester side functions, said basic compound C being added in an amount suitable for hydrolysing at least one part of said ester side functions into carboxylic acid and/or alcohol functions, as a result of which a modified latex L' is obtained, the viscosity of which gradually increases with time from the addition of the compound C up to the formation of a gel; then (E2) the resulting modified latex is introduced into the medium M before the formation of the gel and the gel is left to form within the medium M.

Treatment of underground formations with gels

The invention relates to a method for preparing a sequenced copolymer comprising a first block (A) connected to a second block (B), said method comprising the following steps of monitored radical polymerisation: (E1) bringing into contact, typically in an aqueous medium: unsaturated ethylene monomers m, selected in order to constitute the block (A); a source of free radicals; and an agent for monitoring the radical polymerisation; and then (E2) bringing into contact: the polymer obtained from step (E1); unsaturated ethylene monomers m; a source of free radicals; and a polymer Pwhich is not ethylenically unsaturated and supports labile hydrogens.

Growing community of inventors

Saint-Ouen, France

Arnaud Cadix