发明授权
- 专利标题: Oil recovery method using an emulsion
- 专利标题(中): 采用乳液的油回收方法
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申请号: US62167申请日: 1998-04-17
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公开(公告)号: US5855243A公开(公告)日: 1999-01-05
- 发明人: James R. Bragg
- 申请人: James R. Bragg
- 申请人地址: TX Houston
- 专利权人: Exxon Production Research Company
- 当前专利权人: Exxon Production Research Company
- 当前专利权人地址: TX Houston
- 主分类号: C09K8/26
- IPC分类号: C09K8/26 ; C09K8/32 ; C09K8/502 ; C09K8/58 ; C09K8/82 ; E21B43/16 ; E21B43/32 ; E21B43/22
摘要:
The disclosed invention provides a method for recovering hydrocarbons from a subterranean formation by injecting an emulsion, comprising oil and water, into the formation. More specifically, the emulsion is stabilized using undissolved solid particles, which are preferably at least partially oleophilic. The solids-stabilized emulsion may be used either as a drive fluid for displacing hydrocarbons from the formation or to produce a barrier for diverting flow of fluids in the formation. Such solid particles may be either formation solid particles (i.e., indigenous to the formation) or nonformation solid particles (i.e., obtained from outside the formation). Nonformation solid particles may either be naturally occurring or synthetic. Some preferred solids include clays, quartz, feldspar, gypsum, coal dust, asphaltenes, and polymers. Carbon dioxide or another gas may be added to the emulsion to adjust the emulsion's viscosity to the desired level.
公开/授权文献
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