04468334 is referenced by 42 patents and cites 9 patents.

An heteropolysaccharide known as Biopolymer PS 87 comprises glucose, galactose, mannose, glucuronic acid and fucose. Biopolymer PS 87 is pseudoplastic, has a consistency at 20.degree. C. of at least 150 poise and a yield stress value at 20.degree. C. of at least 30 dynes/cm.sup.2. Biopolymer PS 87 is synthesized by a strain of Bacillus polymyxa or a genetically similar micro-organism and has many domestic and industrial uses as a suspending agent or thickener.

Title
Aqueous drilling fluid and mobility control solution for use on recovery
Application Number
166220
Publication Number
4468334
Application Date
August 23, 1982
Publication Date
August 28, 1984
Inventor
David C Steer
Wirral
GB
Roger B Cox
Reading
GB
Agent
James J Farrell
Assignee
Lever Brothers Company
NY, US
IPC
E21B 43/22
C09K 7/02
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