Schlumberger Technology Corporation

Prad Research and Development Nv

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Michel Ermel

Jesse Lee

Slaheddine Kefi

Gérard Daccord

Nikhil Shindgikar

Jean-Philippe Bedel

Michel Michaux

Sylwia Komocki

Jean-Philippe Caritey

Chrystel Brunet-Cambus

Chrystel Cambus-Brunet

Mixtures of fibers and solid particles are effective for curing fluid losses and lost circulation in a subterranean well. Stiff fibers are more effective than flexible ones; however, mixtures of stiff and flexible fibers have a synergistic effect. The quantity and particle-size distribution of the solids are optimized according to the stiffness, dimensions and concentrations of fibers.

Engineered fibers for well treatments

A cement slurry composition for cementing a well comprising: a hydraulic cement, water and a combination made of a hydroxyethyl cellulose and an acrylamido-methyl-propane sulfonate-acrylamide copolymer. Provided is also a method for cementing a well involving such cement slurry composition. The composition provides a solution to decouple the fluid-loss control and the slurry rheologyfor cement for slurry and particularly for extended cement slurry.

Control of the properties of cement slurries with optimized polymers combination

The problem of fiber or particle settling in well cement slurries is addressed by providing a fluid containing two fiber components of differing properties. Such a well treatment fluid, comprising a base fluid; a first fiber component that it substantially more dense than the base fluid; and a second fiber component that has a density close to that of the base fluid and is relatively flexible.

Well cementing slurries containing fibers

Growing community of inventors

St Lambert des Bois, France

Michel Ermel