发明名称 |
METHOD FOR ALTERING THE STRESS STATE OF A FORMATION AND/OR A TUBULAR |
摘要 |
A method for altering the stress state of a subterranean formation, comprises a) drilling a borehole into the formation, b) installing a tubular element having a top end and a bottom end in the borehole, c) anchoring the tubular element to the formation at at least two points along the length of the tubular element, and d) expanding the tubular element, thereby inducing compression between the two points. At least one anchoring point may be selected such that a pair of adjacent anchoring points spans an unstable portion of the formation, anchoring means may be used, and the position of at least one anchor point may be selected such that the distance between that anchor point and an adjacent anchor point is less than the maximum length of pipe that could be expanded between two anchor points without failing. |
申请公布号 |
WO2009020827(A2) |
申请公布日期 |
2009.02.12 |
申请号 |
WO2008US71732 |
申请日期 |
2008.07.31 |
申请人 |
SHELL OIL COMPANY;SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;CAMPO, DONALD BRUCE;COSTA, DARRELL SCOTT |
发明人 |
CAMPO, DONALD BRUCE;COSTA, DARRELL SCOTT |
分类号 |
E21B23/01;E21B43/10 |
主分类号 |
E21B23/01 |
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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