发明授权
- 专利标题: Method of increasing the yield of hydrocarbons from a subterranean formation
- 专利标题(中): 从地层提高烃产量的方法
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申请号: US461668申请日: 1983-01-27
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公开(公告)号: US4508170A公开(公告)日: 1985-04-02
- 发明人: Wolfgang Littmann
- 申请人: Wolfgang Littmann
- 专利权人: Wolfgang Littmann
- 当前专利权人: Wolfgang Littmann
- 优先权: DEX3202492 19820127
- 主分类号: C09K8/588
- IPC分类号: C09K8/588 ; C09K8/592 ; E21B43/24
摘要:
Heavy crude oil is recovered from a subterranean formation by a process comprising(a) heating said formation, and(b) subsequently flooding the formation with a cold aqueous solution containing a polymer additive which increases its viscosity.
公开/授权文献
- US5716661A Method of making a light weight orthopedic casting tape 公开/授权日:1998-02-10
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