发明名称 |
Subsurface pressure actuated well apparatus. |
摘要 |
<p>Method and apparatus for actuating one or more downhole well tools carried by a production or work string conduit having an imperforate wall and for blocking fluid communication between an activating fluid body and a second fluid source within said well across dynamic seals between actuating members of the well tool, by producing selective signals through the conduit wall detectable by a member to produce an activating signal for actuating the downhole well tool by a downhole energy source. <IMAGE></p> |
申请公布号 |
EP0467573(A2) |
申请公布日期 |
1992.01.22 |
申请号 |
EP19910306198 |
申请日期 |
1991.07.09 |
申请人 |
BAKER-HUGHES INCORPORATED |
发明人 |
BANGERT, DAN;RUBBO, RICHARD, |
分类号 |
E21B41/00;E21B23/00;E21B23/04;E21B33/1295;E21B34/06;E21B34/10;E21B43/1185;E21B47/18 |
主分类号 |
E21B41/00 |
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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