Recovery of petroleum

Details Recovery of petroleum Recovery of petroleum

E - Fixed Constructions

21

B

166/26

E21B 43/00 (2006.01) E21B 43/30 (2006.01)

Patent

CA 1059431

ABSTRACT OF THE DISCLOSURE The specification discloses an improvement in methods for recovery of petroleum substances from underground accumulations in earth strata. Disclosed are means to enhance the contribution of compaction to recovery through well bores, and more particularly the recovery of viscous liquids and semi-liquids such as tars and bitumens. Because means are shown for the recovery of earth strata solid materials associated with petroleum substances the present invention also is applicable to the recovery of any underground substance whether liquid or solid, which may be disintegrated by hydraulic or mechanical means at a distance from a well. Broadly speaking, this is a method of recovering petroleum substance from an underground accumulation in earth strata comprising: (a) drilling a first well into said strata, (b) placing a substantial mass above said accumulation to compact said earth strata and reduce the porosity thereof, and (c) expelling said petroleum substance into said first well.

303118

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