Process for removing flow-restricting material from wells

Details Process for removing flow-restricting material from wells Process for removing flow-restricting material from wells

E - Fixed Constructions

21

B

31/30

E21B 21/00 (2006.01) C09K 8/52 (2006.01) C09K 8/575 (2006.01) E21B 43/22 (2006.01)

Patent

CA 1311116

ABSTRACT An improved process for removing from a wellbore in a subterranean formation particulate material bonded together by a cured phenolic resin. The material is contacted with a solvent composition comprising a liquid selected from the groups: N,N- dimethylformamide, N-methyl-2-pyrrolidone and mixtures therof for a sufficient time to separate the particulate material and then the separated material is removed from the wellbore.

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