Non-polluting dispersing agent for drilling fluids based on fres

Details Non-polluting dispersing agent for drilling fluids based on fres Non-polluting dispersing agent for drilling fluids based on fres

1990-07-16

1992-03-31

Bowers, Jr., Charles L.

Boring or penetrating the earth

Processes

524556, 526240, 526241, 5263171, 507117, 507118, 507119, 507120, 507121, 507122, 507123, 507125, 507905, C09K 702

Patent

active

050999281

ABSTRACT:
A non-polluting dispersing agent for drilling fluids based on soft water or salt water.
A dispersing agent for aqueous drilling fluids, optionally saline, belonging to the group of polymers and/or copolymers containing acid functions which is characterized in that, to ensure that these fluids retain their rheological characteristics, even under the extreme temperature and pressure conditions prevailing in deep bore holes, said dispersing agent is a salt of said polymers and/or copolymers of which the salifying cation corresponds to a metal having a Pauling electronegativity at least equal to 0.95 and preferably greater than 1.

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