Wells – Processes – Distinct – separate injection and producing wells
Patent
1987-12-29
1989-07-04
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166274, 166295, 166300, E21B 33138, E21B 4322
Patent
active
048441635
ABSTRACT:
A chemical blowing agent is incorporated into a polymer formulation to provide delayed foaming in a subterranean reservoir when, via catalysis through reservoir temperature or minerals present, the reservoir itself initiates or accelerates decomposition of the chemical. The resultant gelled foam expands and stiffens thereby closing pores in a more permeable zone of said reservoir. Once foaming is completed, a carbon-dioxide or water-flooding oil recovery process can be used to recover hydrocarbonaceous fluids from a zone of lesser permeability.
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Hazlett Randy D.
Strom E. Thomas
Malone Charles A.
McKillop Alexander J.
Mobil Oil Corporation
Speciale Charles J.
Suchfield George A.
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