Assignee
SCHLUMBERGER CIE DOWELL
FR·7 granted patents·307 citations·filing 1973–1985
Top patents by PatentIndex Score
7 records- 0197US4537918ACement compositions for cementing wells, allowing pressure gas-channeling in the cemented annulus to be controlledSCHLUMBERGER CIE DOWELL·Filed 1983·Granted Aug 27, 1985·173 cites·17 claims
- 0289US4507213AMethod for obtaining gelled hydrocarbon compositions, the compositions according to said method and their application in the hydraulic fracturing of underground formationsSCHLUMBERGER CIE DOWELL·Filed 1982·Granted Mar 26, 1985·44 cites·29 claims
- 0374US4838699ACement mixing processSCHLUMBERGER CIE DOWELL·Filed 1985·Granted Jun 13, 1989·43 cites·4 claims
- 0461US3958901AAxial piston pumpSCHLUMBERGER CIE DOWELL·Filed 1973·Granted May 25, 1976·16 cites·2 claims
- 0546US4568471AFluid loss additive for cementSCHLUMBERGER CIE DOWELL·Filed 1983·Granted Feb 4, 1986·13 cites·21 claims
- 0638US4778528ACement slurry compositions for cementing oil wells, adapted to control free water and corresponding cementing processSCHLUMBERGER CIE DOWELL·Filed 1983·Granted Oct 18, 1988·9 cites·15 claims
- 0724US4550935AQuick-release couplingSCHLUMBERGER CIE DOWELL·Filed 1982·Granted Nov 5, 1985·9 cites·6 claims
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