发明名称 |
Method to reduce water saturation in near-well region |
摘要 |
<p>This invention provides a method for reducing the water saturation in the near-well region. Along with various well treatment possibilities, one application of this invention increases the injectivity rate of a substantially nonaqueous fluid into a subterranean formation. The preferred embodiment uses this invention to increase the injectivity of solvent gas into an oil-bearing formation for enhancing the amount and/or rate of oil recovery from the formation. The method includes injecting a second fluid into the near-well region of the injection well to displace at least a portion of the water from that region. Displacement of the water and subsequent displacement of the secondary fluid allow maximum injectivity for the primary solvent being injected for oil recovery.</p> |
申请公布号 |
GB2359577(A) |
申请公布日期 |
2001.08.29 |
申请号 |
GB20010010415 |
申请日期 |
1999.10.26 |
申请人 |
* EXXONNMOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
TODD R * REPPERT;KEITH W * IDOL |
分类号 |
E21B43/16;E21B43/25;E21B43/32;E21B49/00;(IPC1-7):E21B43/00 |
主分类号 |
E21B43/16 |
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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