发明名称 |
Methods and compositions for sealing subterranean zones |
摘要 |
Methods and compositions for sealing subterranean zones having temperatures in the range of from about 80° F. to about 300° F. are provided. A method of the invention is basically comprised of the steps of providing a subterranean zone sealing composition that becomes substantially rigid when exposed to subterranean zone temperatures above about 80° F. and has a pH above about 8.5 comprised of water, a substantially fully hydrated depolymerized polymer and a cross-linking agent. The sealing composition is introduced into the subterranean zone whereby it becomes rigid and seals the zone. The sealing composition can subsequently be removed by contact with a fluid having a pH below about 8 when a boron compound is utilized as the cross-linking agent.
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申请公布号 |
US6971448(B2) |
申请公布日期 |
2005.12.06 |
申请号 |
US20030376182 |
申请日期 |
2003.02.26 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
SLABAUGH BILLY F.;WEAVER JIMMIE D.;MUNOZ, JR. TRINIDAD;TODD BRADLEY L. |
分类号 |
F16D69/02;(IPC1-7):E21B33/138 |
主分类号 |
F16D69/02 |
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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