Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component
Patent
1992-03-17
1994-02-01
Geist, Gary
Earth boring, well treating, and oil field chemistry
Earth boring
Contains organic component
507119, 507120, 507125, 252 8551, C09K 702
Patent
active
052832350
ABSTRACT:
This invention relates to a composition comprising a mixture of a brine and a liquid hydrocarbon, and (A) a viscosity increasing amount of at least one ester of a carboxy-containing interpolymer or salt thereof wherein the interpolymer is prepared by polymerizing an olefin selected from the group consisting of alpha-olefins and vinyl aromatic monomers with at least one alpha, beta-unsaturated carboxylic acylating agent, and provided that when the olefin is vinyl toluene, then the alpha, beta-unsaturated carboxylic acylating agent is an alpha, beta-unsaturated dicarboxylic acylating agent. The compositions of the present invention are useful as drilling fluids as well as completion fluids. The esters of the carboxy-containing interpolymer or salts thereof provide beneficial viscosity, formation stabilization, emulsification and rheology properties to the fluids.
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Bush James H.
Jahnke Richard W.
Kocurek Lawrence J.
Cairns James A.
Engelmann John H.
Geist Gary
Hunter Frederick D.
The Lubrizol Corporation
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