Total Sa

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Totalenergies Onetech

Total Se

Typhonix As

Centre National De La Recherche Scientifique-cnrs

Hemovis

Stéphane Jouenne

Olivier Tillement

Trygve Husveg

Christian Hurtevent

Arthur Marais

Bertrand Levache

Mattéo Martini

Matteo Martini

Nicolas Passade-Boupat

Guillaume Heurteux

Guy Chauveteau

Alexandre De Tilly

Enric Santanach Carreras

Use of at least one compound of formula (I): (I) [P(R—Y—R)]zXz- is described for enhancing the injectivity of an injection well, wherein: Y is chosen from an oxygen atom or an NH group; Ris a linear or branched alkyl radical having from 1 to 15 carbon atoms; Ris chosen from a hydrogen atom or a linear or branched alkyl radical having from 1 to 14 carbon atoms; Xz- is a monovalent anion or a divalent anion, or a trivalent anion, or a tetravalent anion group; z is a number from 1 to 4. The compound of formula (I) is added to an aqueous medium to form an injection stream which is injected into a subterranean formation which comprises at least one polymer, via said injection well.

Composition for enhancing injectivity of a subterranean formation

The invention relates to a method for determining the intrinsic viscosity [&#x3b7;] of an aqueous polymer solution at a temperature T, wherein the aqueous polymer solution comprises at least one acrylamide-based polymer in an aqueous solvent, the aqueous solvent having a salinity of from 6 to 250 g/L, the method comprising the steps of: &#x2014;providing a single universal relation Rbetween (i), the product of polymer concentration and intrinsic viscosity C&#xb7;[&#x3b7;], and (ii) specific viscosity at zero shear rate &#x3b7;; &#x2014;performing a measurement of the dynamic viscosity of the aqueous polymer solution at one polymer concentration C, at temperature T and at various shear rates; &#x2014;determining from said measurement the zero-shear viscosity &#x3b7;of the aqueous polymer solution at polymer concentration Cand at temperature T; &#x2014;calculating the specific viscosity at zero shear rate of the aqueous polymer solution at polymer concentration C and at temperature T as &#x3b7;=(&#x3b7;&#x2212;&#x3b7;)/&#x3b7;, where &#x3b7;is the zero-shear viscosity of the aqueous solvent; &#x2014;estimating the intrinsic viscosity [&#x3b7;] of the aqueous polymer solution at temperature T by applying the universal relation Rto the calculated specific viscosity at zero shear rate &#x3b7;and polymer concentration C.

Method for determining the viscosity of a polymer solution

A method for the detection and quantification, in a complex aqueous fluid, of additives and water-soluble polymers used in the enhanced recovery of oil and shale gas.

Method for detecting and quantifying additives used in the enhanced recovery of oil and shale gas

The present invention relates to a flow control valve to be connected to a pipe. The valve includes: a plurality of fluid transport tubes having a geometrically variable cross-section and placed in parallel with each other; and a means for connecting to the pipe and located at one end of the fluid transport tubes.

Flow control valve including a plurality of tubes having a geometrically variable cross-section

A water injection flow control device includes a stack of discs or cone-like plates that form spiral-shaped flow conduits. The spiral-shaped flow conduits form at least one revolution about a central point or axis and depart or approach the central point or axis for each revolution. At least some of the spiral-shaped flow conduits have sections in series with alternating cross sectional area for flow and at least some have sections with a serpentine-type shape for flow along the spiral-shaped flow conduits. The spiral-shaped flow conduits have an inlet coupled to an inner or outer end of the spiral shaped flow conduits, an outlet coupled to the other end of the spiral-shaped conduits, and a control member.

Polymer flow control device

A flow rate control valve and a method for injecting a fluid into an underground formation are provided. In accordance with the method, the fluid is transported in at least one injection pipe. The injection pipe has a main portion including a single tube. The flow rate control valve has at least ten fluid transport tubes that are arranged in parallel. A ratio of the cross-section of the main portion over the sum of the cross-sections of the fluid transport tubes is less than or equal to 5. A flow rate of the fluid circulating in the injection pipe is adjusted by distributing the fluid through all or only some of the fluid transport tubes. The fluid from the injection pipe is then injected into the underground formation.

Flow rate control valve for solutions of polymers

Growing community of inventors

Bizanos, France

Stéphane Jouenne