Institut Francais Du Pe'trole

Dowell Schlumberger Incorporated

Other

Schlumberger Technology Corporation

Institute Francais Du Petrole

Ifp Energies Nouvelles

Annie Audibert

Louise Bailey

Jacqueline Lecourtier

Alain Rivereau

Geoffrey Colin Maitland

Jean-Francedillaois Argillier

Paul I Reid

Christine Dalmazzone

Jean-Fran&ccedil;ois Argillier

Jean-Francois Argillier

Eric Lecolier

Michel Janssen

Alain Driancourt

Christine No&iuml;k

David Pasquier

Ugo C Pfeiffer

Benjamin Herzhaft

Daniel Longeron

Pierre Marchand

Christine Noik

Carine Dewattines

Sinquin Anne

Guiseppe Molteni

Vincent Pauchard

Andr E Demoulin

Rafael Lugo

The present invention relates to a well drilling, completion or workover fluid wherein the continuous phase of the fluid essentially consists of a liquid fluorinated compound. In a variant, the liquid fluorinated compound is a perfluorinated compound.

Well fluid comprising a fluorinated liquid phase

A well drilling, completion or workover fluid has a continuous phase of the fluid essentially consists of a liquid fluorinated compound. In a variant, the liquid fluorinated compound is a perfluorinated compound.

In order to transport hydrates in suspension in a fluid comprising water, gas and a liquid hydrocarbon, at least one non-polluting composition consisting essentially of a mixture comprising at least one ester associated with a non-ionic co-surfactant of the polymerized (dimer and/or trimer) carboxylic acid type is incorporated into said fluid. The composition is generally introduced in a concentration of 0.1% to 5% by weight with respect to the liquid hydrocarbon.

Method for transporting hydrates in suspension in production effluents empolying a non-polluting additive

The present invention relates to an additive that inhibits formation of gas hydrates for water-based drilling fluid, the additive having at least the following constituents (weight percent):

Method and thermodynamic inhibitors of gas hydrates in water-based fluids

The invention relates to a high-performance cement comprising an alumnic cement with an aluminium content of at least more than 30%; microsilica with a grain size of 0.1 - 20 &#x3bc;m whereby the percentage thereof is 35 % less by weight in comparison with the weight of the cement; mineral particles with a grain size of 0.5 - 500 &#x3bc;m whereby the percentage thereof is 35% less by weight in comparison with the weight of the cement, the percentage of said particles being less than that of the microsilica; a water-soluble polymer fluidifying agent whereby the percentage thereof is 0.2 to 3.0% in comparison with the weight of the cement; a retarding agent which is used to control the setting time of the slurry; an amount of water the maximum thereof corresponding to 40 % in relation to the cement.

Oil-well cement slurry

The present invention relates to a formulation of a foamed cement slurry comprising in combination:

Foamed cement slurry

The present invention relates to a method and a fluid for drilling or intervening in a well passing through a porous, permeable formation, wherein a water-based well fluid is circulating in said well. In this method, there is added to the fluid not only the conventional ingredients for such a fluid but also a maximum of 10 wt. % of a composition obtained from a grease or oil and an alcohol, with the chain lengths of the acid and alcohol parts being chosen such that the ester thus obtained has sufficient dispersion in water, compatibility with said ingredients, does not form an emulsion with the reservoir oil, and adsorbs sufficiently on the porous formation.

Method and fluid for checking the saturation of a formation in the immediate vicinity of a well

Cement slurries comprising hydrophobic polymers

A lightened cement slurry for cementation of a well includes cement, at least one mineral filler, water, and resin particles obtained by polymerization from vinyl aromatic, alkyl acrylate or acrylic monomers, wherein the polymerization includes crosslinking.

Lightened cement slurries

Method and device for evaluating during drilling the capacity of well fluids to form hydrates

For controlling filtration loss during the installation of climber cement in a well, the procedure entails the addition of a specific quantity of at least one derivative of galactomannan, hydrophilically and hydrophobically modified, a hydrophobically modified hydroxy propyl guar (HMHPG).

Well cementing method using HMHPG filtrate reducer

The present invention relates to a process used in a well for controlling the filtration of a drilling, a completion or a workover fluid set in a well. The process comprises adding a predetermined amount of at least one hydrophobically modified cellulose derivative. In a variant of the invention, the cellulose derivative is a hydrophobically modified hydroxyethylcellulose. The invention further relates to a drilling, a completion or a workover fluid including at least one hydrophobically modified cellulose derivative, for example hydrophobically modified hydroxyethylcellulose and notably viscosifiers such as polymers or reactive clay.

Process and water-base fluid utilizing hydrophobically modified

The present invention relates to a method of stabilizing argillaceous rocks containing reactive clays in the presence of water, wherein said argillaceous rocks are placed in contact with an aqueous solution containing a polymer with hydrophilic groups and hydrophobic groups.

Method for inhibiting reactive argillaceous formations and use thereof

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Croissy sur Seine, France

Annie Audibert