Delayed rigid foam systems and applications in particular...

Details Delayed rigid foam systems and applications in particular... Delayed rigid foam systems and applications in particular...

E - Fixed Constructions

21

B

31/14

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

Patent

CA 2008673

ABSTRACT The invention concerns delayed gelation systems which are injected under the shape of a foam in the chosen formations. The choice of an either oil compatible, or water compatible foaming agent allows obtaining a remarkable process selectivity. Plugging; acid diversion; water control. Fig.1c

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