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Process for tertiary oil recovery using tall oil pitch

Patent ·
OSTI ID:865495
 [1]
  1. El Cerrito, CA
+ Show Author Affiliations

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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
DOE Contract Number:
AC03-76SF00098
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Number(s):
US 4526231
OSTI ID:
865495
Country of Publication:
United States
Language:
English

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Related Subjects

/166/507/
11
13
acid
agent
alkaline
amount
amount sufficient
cation
caustic
composition
composition comprising
compositions
comprising
control
control agent
crudes
dissolution
effective
effective amount
employing
enhancing
heavy
heavy crude
included
inhibiting
injecting
maintain
mobility
mobility control
multivalent
oil
oil recovery
particularly
ph
pitch
polymeric
preferably
process
process employing
recovery
reservoir
residual
silica
soap
sufficient
tall
tertiary
tertiary oil