发明授权
- 专利标题: Methods and compositions for sealing subterranean zones
- 专利标题(中): 用于密封地下区域的方法和组合物
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申请号: US10376182申请日: 2003-02-26
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公开(公告)号: US06971448B2公开(公告)日: 2005-12-06
- 发明人: Billy F. Slabaugh , Jimmie D. Weaver , Trinidad Munoz, Jr. , Bradley L. Todd
- 申请人: Billy F. Slabaugh , Jimmie D. Weaver , Trinidad Munoz, Jr. , Bradley L. Todd
- 申请人地址: US OK Duncan
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: US OK Duncan
- 代理商 Robert A. Kent; C. Clark Dougherty, Jr.
- 主分类号: F16D69/02
- IPC分类号: F16D69/02 ; E21B33/138
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.
公开/授权文献
- US20040163813A1 Methods and compositions for sealing subterranean zones 公开/授权日:2004-08-26