Delayed rigid foam systems and applications in particular for pl

Details Delayed rigid foam systems and applications in particular for pl Delayed rigid foam systems and applications in particular for pl

1990-01-26

1992-02-11

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166281, 166292, 166300, E21B 33138, E21B 4327

Patent

active

050868403

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

REFERENCES:
patent: 3603399 (1971-09-01), Reed
patent: 3614985 (1971-10-01), Richardson
patent: 4665986 (1987-05-01), Sandiford
patent: 4673038 (1987-06-01), Sandiford et al.
patent: 4676318 (1987-06-01), Myers et al.
patent: 4799550 (1989-01-01), Harris et al.
patent: 4836281 (1989-06-01), Robin et al.
patent: 4842068 (1989-06-01), Vercaemer et al.
patent: 4848465 (1989-07-01), Hazlett

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