METHOD OF OPERATING A DRILLING SYSTEM |
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| 申请号 | US15755094 | 申请日 | 2016-08-23 | 公开(公告)号 | US20180245411A1 | 公开(公告)日 | 2018-08-30 |
| 申请人 | MANAGED PRESSURE OPERATIONS PTE. LTD.; | 发明人 | BRIAN PICCOLO; CHRISTIAN LEUCHTENBERG; HENRY PINKSTONE; | ||||
| 摘要 | A method of operating a drilling system. The drilling system includes a drill string extending into a wellbore, a driver which rotates the drill string, a pump to pump drilling fluid down the drill string, a wellhead mounted at the wellbore, a riser extending up from the wellhead around the drill string, a blowout preventer mounted on the wellhead, a riser closure device mounted in the riser, a first return conduit, and a flow outlet arranged in the riser below the riser closure device. The method includes operating the driver to stop a rotation of the drill string, closing the riser closure device if it is not already closed, operating the pump to stop a pumping of drilling fluid down the drill string, closing the blowout preventer, and increasing a wellbore pressure by controlling a rate of the flow of the fluid along the first return conduit. | ||||||
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