DRILLING RISER PROTECTION SYSTEM |
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| 申请号 | US15537886 | 申请日 | 2015-11-12 | 公开(公告)号 | US20170350213A1 | 公开(公告)日 | 2017-12-07 |
| 申请人 | MHWIRTH AS; | 发明人 | DAG VAVIK; | ||||
| 摘要 | A protection system for a drilling riser. The drilling riser includes a main drilling riser bore and a drilling riser annulus and extends from a floating installation to a location on a seafloor and is fluidly connected to a subsea BOP. The system includes a fluid conduit which extends from the floating installation to a lower region of the drilling riser. The fluid conduit is fluidly connected with the drilling riser annulus in the drilling riser. The fluid conduit provides at least one of a rapid pressure relief and a fluid bypass for the main drilling riser bore to prevent the drilling riser from an uncontrolled pressure build-up due to an inadvertent plugging or a restriction resulting in a maximum allowable working pressure (MAWP) of the drilling riser being exceeded, if a restriction, a plug or a blockage exists in the drilling riser annulus or in riser outlets. | ||||||
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