发明名称 |
WELLHEAD ASSEMBLY |
摘要 |
A wellhead assembly in which an in-line tree (10) is landed within a wellhead housing (3). The in-line tree has a vertical production through bore (11), two hydraulically or electrically controllably in-line valves (13A, 13B) in the vertical production bore, and a lateral bore (16) leading from the vertical production through bore. A horizontal tree (20) having a vertical through bore (23) is landed on the wellhead housing (3) so that the in-line tree (20) is within the vertical bore. The horizontal tree has a lateral bore (24) which is aligned with the lateral bore (16) of the in-line tree. The in-line tree (10) can be run in and retrieved through the horizonal tree (20). Alternatively the horizontal tree (20) can be removed from the wellhead housing (3) without a BOP if the in-line valves (13A, 13B) are closed.
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申请公布号 |
CA2217303(A1) |
申请公布日期 |
1998.05.29 |
申请号 |
CA19972217303 |
申请日期 |
1997.10.03 |
申请人 |
COOPER CAMERON CORPORATION |
发明人 |
DUELL, CRAIG;HART, BRIAN;GARNHAM, DAVID |
分类号 |
E21B33/035;E21B34/04;(IPC1-7):E21B33/03 |
主分类号 |
E21B33/035 |
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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