Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1996-07-01
1997-09-23
Suchfield, George A.
Boring or penetrating the earth
Processes
Boring with specific fluid
166312, 507113, 507114, 507215, 507216, 507925, C09K 702, E21B 33138, E21B 4325
Patent
active
056694563
ABSTRACT:
The present invention relates to a process used in a well for controlling the filtration of a drilling, a completion or a workover fluid set in a well. The process comprises adding a predetermined amount of at least one hydrophobically modified cellulose derivative. In a variant of the invention, the cellulose derivative is a hydrophobically modified hydroxyethylcellulose. The invention further relates to a drilling, a completion or a workover fluid including at least one hydrophobically modified cellulose derivative, for example hydrophobically modified hydroxyethylcellulose and notably viscosifiers such as polymers or reactive clay.
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Database WPI, Derwent Publications 83-787503.
Argillier Jean-Francois
Audibert Annie
Bailey Louise
Reid Paul I.
Dowell Schlumberger, Inc.
Institut Francais du Pe'trole
Suchfield George A.
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