E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/39
E21B 43/24 (2006.01) C09K 8/60 (2006.01) E21B 36/02 (2006.01)
Patent
CA 1227744
STEAM DRIVE OIL RECOVERY METHOD UTILIZING A DONNELLY STEW GENERATOR AND ANTI CLAY-SWELLING AGENT ABSTRACT OF THE DISCLOSURE Viscous oil is recovered from a subterranean, viscous oil-containing formation by a steam flooding technique wherein steam is generated in a Donnelly steam generator located in an injection well by spontaneous combustion of a pressurized mixture of a water-soluble fuel such as sugars and alcohols dissolved in water or a stable hydrocarbon fuel-in-water emulsion containing an anti clay-swelling agent and substantially pure oxygen. The generated mixture of steam and combustion gases pass through the formation, displacing oil and reducing the oil's viscosity and the mobilized oil is produced from the formation via a spaced-apart production well. Suitable anti clay-swelling agents include metal halide salts and diammonium phosphate.
472555
Hopkins Daniel N.
Snavely Earl S.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
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