发明名称 |
Diverless subsea hot tap system with lateral pipe tie-in |
摘要 |
A diverless process of tapping a pressurized subsea pipeline without removing the pipeline from service. The process includes the steps of lowering and landing a measurement tool onto the pipeline in order to check ovality and straightness of the pipeline. Pipe lift frames are lowered and landed onto the pipeline spaced from a chosen location. The pipeline is lifted by hydraulic actuators or mechanical screws on the lift frames. A hot tap machine and accompanying orientation frame are lowered from the surface and landed on the pipeline between the pipe lift frames. A fitting clamp is secured to the pipeline. A hot tap machine is lowered onto the hot tap fitting and orientation frame. The pipeline is then tapped with the hot tap machine.
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申请公布号 |
US6290431(B1) |
申请公布日期 |
2001.09.18 |
申请号 |
US20000497577 |
申请日期 |
2000.02.03 |
申请人 |
WILLIAMS FIELD SERVICES GULF COAST COMPANY, L.P. |
发明人 |
EXLEY GERN D.;CROSS DONALD W.;TARLTON ORAN;DECKER LARRY;HICKS DAVID J.;MCCOY RICHARD W. |
分类号 |
B08B9/023;B08B9/04;F16L1/00;F16L1/12;F16L1/26;F16L55/18;(IPC1-7):F16L1/00 |
主分类号 |
B08B9/023 |
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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