07256159 is referenced by 22 patents and cites 25 patents.

The present invention concerns a water-based drilling mud for utilization in the drilling of oil wells comprising an aqueous phase wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer. The subject invention further reveals a method of lubricating a drilling bit during the drilling of a well which comprises circulating a water-based drilling mud in the vicinity of the drilling bit wherein the water-based drilling mud is comprised of an aqueous phase, and wherein the aqueous phase contains an oil soluble polymer in the form of a gel as a fluid loss reducer.

Title
Fluid loss reducer for high temperature high pressure water based-mud application
Application Number
11/508380
Publication Number
7256159 (B2)
Application Date
August 23, 2006
Publication Date
August 14, 2007
Inventor
Patrick Vongphouthone
Sceaux
FR
Barry Wood
Hornchurch
GB
Bertrand Guichard
Villecresnes
FR
Agent
Alvin T Rockhill
Assignee
Eliokem S
FR
IPC
C09K 8/82
C09K 8/487
C09K 8/588
C09K 8/76
C09K 8/36
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