Institut Francais Du Pe'trole

Other

Rhodia Chimie

Institute Francais Du Petrole

Institut Francias Du Petrole

Annie Audibert-Hayet

Jean-Fran&ccedil;ois Argillier

Christine Dalmazzone

Michel Janssen

Andr&eacute; Demoulin

Claire Giard-Blanchard

Sabine Zeilinger

Jean-Pierre Durand

Bruno Langlois

Patrick Gateau

Pierre Le Perchec

Sylvie Touzet

Jean-Francedillaois Argillier

Pierre Louis Carrette

V&eacute;ronique Meyer

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

An organic based emulsion-breaking formulation for use in treating well bores drilled in oil-bearing mud that is not eco-toxic and is optimally compatible with formation fluids comprises: Such a formulation can be weighted by mineral fillers.

Organic emulsion-breaking formula and its use in treating well bores drilled in oil-base mud

An oil-based demulsifying formulation which can be used in the treatment of drains bored in oil-based mud, non ecotoxic and optimally compatible with formation fluids, comprises at least one wetting agent chosen from anionic surfacetants and at least one demulsifier (or 'emulsion breaker') chosen from copolymers of ethylene oxide and propylene oxide, alcohol or phenol derivatives with alkoxylated or polyalkoxylated chain formations, polyalkyleneglycols, polyamines, alkoxylated or polyalkoxylated derivatives of amines, quaternary ammonium salts, quaternized alkanolamine esters, alkyl esters of fatty acids or natural oils, possible alkoxylated or polyalkoxylated, and silicated derivatives such as polysiloxanes.

Oil-based demulsifying agent and its use in the treatment of drains bored in oil-based mud

The present invention relates to a borehole fluid comprising a lubricating compound containing at least one amphiphilic non-ionic compound obtained by reacting at least one vegetable oil or fatty acid as such or in a polymerized state on at least one amino alcohol. In one variant, the compound can be mixed with a solvent. The invention also relates to a method for verifying the lubrication power of a water-based fluid. The invention further relates to the application of said method to borehole fluids with a high pH.

Borehole fluid containing a lubricating composition&mdash;method for verifying the lubrification of a borehole fluid&mdash;application with respect to fluids with a high ph

The present invention relates to a well fluid for releasing tubular elements stuck in the well. The fluid comprises a part A consisting of one or more esters obtained by reaction of a linear or branched monocarboxylic acid (A.1) having between 8 and 24 carbon atoms and a linear or branched polyol (A.2) having between 2 and 20 carbon atoms, a part B consisting of one or more linear or branched monocarboxylic acids having between 8 and 24 carbon atoms, where the carboxylic acid (A.1 and part B) is a mixture of at least 80% carboxylic acids having between 1 and 3 insaturations, and a part C consisting of a different ester or olefins, the quantity of part C is determined in relation to the other components in such a way that the viscosity of the fluid is lower than 40 mPa&middot;s at 40&deg; C. The invention also relates to a method for releasing drillpipes stuck in a well.

Fluid and method for releasing tubular elements stuck in a well

Zwitterion derivative and application to aqueous suspension properties

Hydrosoluble copolymers made of hydrophilic monomers, e.g., acrylamide, and of silane or siloxane derivative-based hydrophobic monomers, e.g., a silane or or siloxane acrylate, is obtained by micellar or heterogeneous radical copolymerization, and such copolymers can be used as rheology control agents in, e.g., a well bore.

Hydrosoluble silane or siloxane derivative-based copolymer

The invention concerns a water based foaming composition and the method of making it. The composition is optimized in that it contains a surfactant specifically selected according to the polymer also present in the composition. The surfactant and the polymer are selected so that they are oppositely charged. The invention is very useful in drilling or treating wells.

Water-based foaming composition-method for making same

Drilling method and system using foam--foaming composition

Growing community of inventors

Croissy sur Seine, France

Annie Audibert-Hayet