Process for tertiary oil recovery using tall oil pitch
Patent
·
OSTI ID:6505260
Compositions and process employing same for enhancing the recovery of residual acid crudes, particularly heavy crudes, by injecting a composition comprising caustic in an amount sufficient to maintain a pH of at least about 11, preferably at least about 13, and a small but effective amount of a multivalent cation for inhibiting alkaline silica dissolution with the reservoir. Preferably a tall oil pitch soap is included and particularly for the heavy crudes a polymeric mobility control agent.
- Assignee:
- The United States of America as represented by the United States Department of Energy
- Patent Number(s):
- US 4526231
- OSTI ID:
- 6505260
- Country of Publication:
- United States
- Language:
- English
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