Earth boring – well treating – and oil field chemistry – Well treating – Contains organic component
Patent
1996-06-19
1999-02-02
Wu, Shean C.
Earth boring, well treating, and oil field chemistry
Well treating
Contains organic component
507227, 507228, 507237, 507928, 166291, 166293, E21B 4300, C09K 702
Patent
active
058665170
ABSTRACT:
Spacer fluids comprising a dispersant selected from the group consisting of water soluble polymers comprising allyloxybenzene sulfonate or allyloxybenzene phosphonate polymerized with at least one of acrylic acid, acrylamides, alkyl acrylamides, maleic anhydride, itaconic acid, sulfonated or phosphonated styrene, sulfonated or phosphonated vinyl toluene, sulfonated or phosphonated isobutylene, acrylamidopropane sulfonate or acrylamidopropanephosphonate, vinyl alcohol, sulfonated or phosphonated propene and alkali metal, alkaline earth metal and ammonium salts thereof and water with optional additional components such as surfactants, viscosifiers and wetting materials to form a rheologically compatible spacer fluid for use between a drilling fluid and a cement slurry and a method for using such spacer fluids to displace drilling fluids from a wellbore space with a cement slurry.
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Carpenter Robert B.
Johnson David L.
Atlantic Richfield Company
Scott F. Lindsey
Wu Shean C.
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