发明名称 |
Gravel pack and sand disposal device |
摘要 |
<p>An apparatus and method allow gravel pack slurry to be placed in a borehole annulus from the toe towards the heel to reduce the pressure acting upon the heel of the borehole during the gravel placement operation. By reducing the pressure on the heel,the gravel pack slurry may be placed in longer sections of the borehole in a single operation. Additionally, excess slurry in the inner string can be disposed in the borehole annulus around the shoe track of the apparatus, and fluid returns can flow up the apparatus through a bypass.</p> |
申请公布号 |
EP2570586(B1) |
申请公布日期 |
2015.11.25 |
申请号 |
EP20120184724 |
申请日期 |
2012.09.17 |
申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
BROUSSARD, JOHN;HALL, CHRISTOPHER;ZIMMERMAN, PATRICK J;RITCHEY, BRIAN J;VAN PETEGEM, RONALD |
分类号 |
E21B33/124;E21B43/04;E21B43/08;E21B47/09 |
主分类号 |
E21B33/124 |
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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