Polyurethane ball sealers for well treatment fluid diversion

Details Polyurethane ball sealers for well treatment fluid diversion Polyurethane ball sealers for well treatment fluid diversion

E - Fixed Constructions

21

B

166/16

E21B 33/14 (2006.01) C09K 8/516 (2006.01) E21B 27/02 (2006.01) E21B 33/138 (2006.01) E21B 43/26 (2006.01)

Patent

CA 1114737

POLYURETHANE BALL SEALERS FOR WELL TREATMENT FLUID DIVERSION ABSTRACT OF THE DISCLOSURE Ball sealers comprising a solid core coated with a polyurethane elastomer are introduced into a well to seal well perforations and divert fluid therein. In the preferred embodiment the ball sealers are used in a hydrocarbon liquid treating fluid and have a density less than the treating fluid. -11-

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