发明名称 |
Wireline downhole annulus valve |
摘要 |
An improved tubing hanger having an annulus passageway therethrough and with an improved annulus control valve therein including an annular hanger body having an annulus passageway extending therethrough with a chamber interrupting said passageway and a valve ball positioned within said chamber for rotation responsive to rotation of gear means associated with said valve ball, a sleeve slidably positioned within said hanger body and having a rack secured thereto and engaging said gear means so that movement of said sleeve controls the position of said valve ball to open and close flow through said annulus passageway.
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申请公布号 |
US4807700(A) |
申请公布日期 |
1989.02.28 |
申请号 |
US19870098377 |
申请日期 |
1987.09.18 |
申请人 |
CAMERON IRON WORKS USA, INC. |
发明人 |
WILKINS, ROBERT L. |
分类号 |
E21B33/04;E21B34/02;E21B34/14;(IPC1-7):E21B33/04 |
主分类号 |
E21B33/04 |
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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