Seal assemblies in subsea rotating control devices |
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| 申请号 | US13645738 | 申请日 | 2012-10-05 | 公开(公告)号 | US10000988B2 | 公开(公告)日 | 2018-06-19 |
| 申请人 | WEATHERFORD TECHNOLOGY HOLDINGS, LLC; | 发明人 | Thomas F. Bailey; Danny W. Wagoner; James W. Chambers; Andrew A. W. Barry; Simon J. Harrall; | ||||
| 摘要 | Rotating control device related oilfield pressure control is accomplished by upper and lower seal members configured to seal around a tubular, a chamber defined between the upper and lower seal members; and wherein fluid enters and/or exits the chamber via some device or structure. Such a device or structure could be a relief valve, a first accumulator, a pressure control valve, an orifice, and/or a void space in a seal member in a location which contacts the tubular. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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