发明名称 |
Preventing flow through subterranean zones |
摘要 |
The present invention provides methods of preventing the flow of water or gas or both through a subterranean zone having a high temperature and a depth such that a long pumping time is required to place a sealing composition therein. The methods basically comprise the steps of preparing a polymeric sealing composition comprised of water, a cross-linking agent and a selected water-soluble polymer which reacts with the cross-linking agent and forms a sealing gel which is stable for a desired period of time at the temperature of the zone and has a pumping time before gelation in the presence of the cross-linking agent whereby the composition can be pumped to the depth of the zone and placed therein. Thereafter, the sealing composition is pumped into the zone and allowed to form a sealing gel therein.
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申请公布号 |
US6843841(B2) |
申请公布日期 |
2005.01.18 |
申请号 |
US20030386862 |
申请日期 |
2003.03.12 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
REDDY BAIREDDY R.;EOFF LARRY S. |
分类号 |
C09K8/512;C09K8/514;C09K8/88;(IPC1-7):C08L5/08 |
主分类号 |
C09K8/512 |
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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