发明名称 |
Method for reducing startup time during a steam assisted gravity drainage process in parallel horizontal wells |
摘要 |
A method for reducing the time during which steam moves in a lateral direction between two parallel superimposed horizontal wells when utilizing a Steam Assisted Gravity Drainage (SAGD) process. Foam is added while injecting steam into an upper horizontal well once steam breakthrough occurs in an interwell region. Foam enters the interwell region thereby causing an increased pressure gradient. This increased pressure gradient adds to the gravity force thereby providing a greater interstitial oil velocity which increases oil drainage between wells during startup.
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申请公布号 |
US5215146(A) |
申请公布日期 |
1993.06.01 |
申请号 |
US19910752139 |
申请日期 |
1991.08.29 |
申请人 |
MOBIL OIL CORPORATION |
发明人 |
SANCHEZ, JAMES M. |
分类号 |
C09K8/592;C09K8/94;E21B43/24;E21B43/30 |
主分类号 |
C09K8/592 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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