Fluid loss control agent with triggerable removal mechanism

Details Fluid loss control agent with triggerable removal mechanism Fluid loss control agent with triggerable removal mechanism

2011-05-24

2011-05-24

Kugel, Timothy J. (Department: 1761)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S219000, C507S221000, C507S230000, C507S244000, C507S260000, C166S282000

Reexamination Certificate

active

07947627

ABSTRACT:
A fluid loss control pill or solution includes a polymer having a functional group that can be hydrolyzed by a base or a nucleophile. A method for fluid loss control in a subterranean formation includes placing a fluid loss control pill or solution in a wellbore penetrating the subterranean formation, wherein the fluid loss control pill or solution comprises a polymer having a functional group that can be hydrolyzed by a base or a nucleophile; and converting the polymer into a soluble form by hydrolyzing the functional group with a base or a nucleophile, when fluid loss control is no longer needed.

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