Viscosifying hydrocarbon liquids

Details Viscosifying hydrocarbon liquids Viscosifying hydrocarbon liquids

C - Chemistry, Metallurgy

09

K

C09K 8/32 (2006.01) C09K 8/36 (2006.01)

Patent

CA 2254282

An oil based drilling mud is viscosified with a maleated ethylene-propylene elastomers. The elastomers are preferably EPM copolymers or EPDM terpolymers. The concentration of the maleic anhydride grafted to the copolymer or terpolymer backbone ranges from 0.01 to 5 wt%, preferably 0.1 to 2.0 wt %. The maleated elastomers are far more effective oil mud viscosifiers than the organophilic clays presently used.

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