Wells – Processes – Distinct – separate injection and producing wells
Patent
1975-09-10
1976-09-07
Purser, Ernest R.
Wells
Processes
Distinct, separate injection and producing wells
252 855D, E21B 4316
Patent
active
039789276
ABSTRACT:
A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting into the formation via the injection well an aqueous solution of ethoxylated asphalts as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. Normally the process would be carried out by first injecting the ethoxylated asphalts into the formation through the injection well and following them with either a polymer or a surfactant solution. The polymer and/or surfactant would then be followed by a drive fluid such as water to push the chemicals to the production well.
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Kudchadker Mohan V.
Walker Thad O.
Ebel Jack E.
Priem Kenneth R.
Purser Ernest R.
Ries Carl G.
Texaco Inc.
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