发明名称 |
Use of surfactants to improve oil recovery during steamflooding |
摘要 |
An improvement is provided in an in situ steamflooding process for recovering oil from a subterranean, heavy oil-containing reservoir. An organic sulfonate surfactant, for example a petroleum sulfonate surfactant, is injected with the steam into the reservoir. The steam-surfactant injection stream is introduced to the reservoir at a temperature in the range of about 180 DEG C. to 260 DEG C. The process may be practised in a single well or multi-well pattern using any of a continuous steam drive, steam soak or cyclic steam recovery program. A substantial increase in oil recovery is achieved by this process, as compared to a steam-only injection scheme.
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申请公布号 |
US4458759(A) |
申请公布日期 |
1984.07.10 |
申请号 |
US19820373164 |
申请日期 |
1982.04.29 |
申请人 |
ALBERTA OIL SANDS TECHNOLOGY AND RESEARCH AUTHORITY |
发明人 |
ISAACS, EZRA E.;PROWSE, DANIEL R. |
分类号 |
C09K8/592;E21B43/24;(IPC1-7):E21B43/24 |
主分类号 |
C09K8/592 |
代理机构 |
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地址 |
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