发明名称 |
DEBRIS BARRIER FOR DOWNHOLE TOOLS |
摘要 |
<p>A debris barrier assembly for use downhole includes a single body annular barrier having a bore; an extension tubular inserted through the bore; an upper tubular coupled to an upper end of the extension tubular; and a lower tubular coupled to a lower end of the extension tubular, wherein the lower tubular includes a release valve. In one embodiment, the release valve is mechanically opened. In another embodiment, a torque connection is used to couple the upper tubular to the extension tubular.</p> |
申请公布号 |
CA2720443(A1) |
申请公布日期 |
2011.05.12 |
申请号 |
CA20102720443 |
申请日期 |
2010.11.09 |
申请人 |
WEATHERFORD/LAMB, INC. |
发明人 |
SMITH, STEVEN B.;FULLER, MARK S. |
分类号 |
E21B23/00;E21B23/06;E21B33/10 |
主分类号 |
E21B23/00 |
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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