发明名称 |
METHOD AND APPARATUS FOR SEALING TUBULARS |
摘要 |
<p>A method of controlling fluid flow between two tubulars includes disposing a sealing member in an annular area between two tubulars, wherein the two tubulars partially overlap; moving the sealing member to a lower position where it is not in contact with one of the tubulars, thereby allowing fluid flow through the annular area; and moving the sealing member to an upper position where it is in contact with both of the tubulars, thereby preventing fluid flow through the annular area.</p> |
申请公布号 |
EP2943642(A2) |
申请公布日期 |
2015.11.18 |
申请号 |
EP20140702157 |
申请日期 |
2014.01.13 |
申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
TWARDOWSKI, ERIC M.;ODELL, II, ALBERT C.;LE, TUONG THANH |
分类号 |
E21B21/10;E21B7/20;E21B33/10;E21B33/14 |
主分类号 |
E21B21/10 |
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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