Delayed rigid foam systems and applications in particular...

E - Fixed Constructions – 21 – B

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E21B 33/138 (2006.01) C09K 8/518 (2006.01) C09K 8/94 (2006.01)

Patent

CA 2008672

ABSTRACT The invention consists of injecting a delayed gelation system under a foam shape. A better penetration and a better selectivity in the plugging treatment is obtained; acid diversion; water control. Single figure.

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