Chemical diversion of heat will improve thermal oil recovery
Cyclic steam injection has been employed to improve recovery in ''heavy oil'' (8-16/sup 0/ API) reservoirs for several years. The major factor in maximizing recovery is the ability to ensure uniform distribution of heat across the productive intervals. A unique chemical process to control steam injection profiles has been developed to divert heat away from depleted, high permeability sands. The product has increased injection pressures, has altered downhole survey profiles, and has shown substantial incremental oil when compared to the response of the wells' prior cycles. Treatment costs are minimal in that the diverting agent is carried into the reservoir with injected steam and no special well preparation is necessary. This paper will summarize work accomplished over a two-year period beginning with initial field testing in 1973. The test area is located in Midway Sunset Field, 40 miles west of Bakersfield, California.
- OSTI ID:
- 7223729
- Report Number(s):
- CONF-761008-157
- Country of Publication:
- United States
- Language:
- English
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