07786051 is referenced by 15 patents and cites 21 patents.

A method of treating a formation penetrated by a wellbore to reduce fluid loss to the formation is carried out by providing a quantity of water-degradable particles formed from a solid polymeric acid precursor having a number average molecular weight (Mn) of greater than 4000. A slurry of the particles is formed with a carrier fluid, which may be an aqueous fluid. The slurry is introduced into the formation through the wellbore at a pressure below the fracture pressure of the treated formation. A treating fluid is subsequently introduced into the formation through the wellbore. The water-degradable particles degrade by contacting the particles with a free aqueous fluid introduced into the formation through the wellbore. The water-degradable particles may have a particle size of from about 0.25 mm or less. The slurry may contain from about 0.01 kg/L to about 0.15 kg/L of the water degradable particles.

Title
Method of preventing or reducing fluid loss in subterranean formations
Application Number
11/567757
Publication Number
7786051 (B2)
Application Date
December 7, 2006
Publication Date
August 31, 2010
Inventor
Timothy Lesko
Novosbirsk
RU
Samih Alsyed
Sugar Land
TX, US
Vibhas J Pandey
Midland
TX, US
George Lange
Midland
TX, US
Agent
Robin Naua
Rachel E Greene
David Cate
Assignee
Schlumberger Technology Corporation
TX, US
IPC
E21B 43/16
E21B 43/22
C23G 1/06
C09K 8/68
C09K 8/60
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