Method to prevent gas intrusion into wellbores during setting of

Details Method to prevent gas intrusion into wellbores during setting of Method to prevent gas intrusion into wellbores during setting of

1990-06-28

1991-06-04

Suchfield, George A.

Wells

Processes

With indicating, testing, measuring or locating

166285, 166291, 166292, 175 50, 175 65, E21B 2108, E21B 3316, E21B 4706

Patent

active

050205943

ABSTRACT:
A method of cementing wells to minimize gas intrusion by applying pressures on the subsurface formations substantially equal to the natural formation pressures.

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