| 摘要 |
<p>A wellhead system is provided. In one embodiment, the wellhead system includes a bypass sleeve (100) for temporarily isolating portions of a wellhead assembly from pressurized f racing fluid. The bypass sleeve may include a generally tubular body (102) having a tool interface, a lock ring (104) disposed at least partially around the body, and an anti-rotation device (106, 108) coupled to the body. In some embodiments, the anti-rotation device includes a resilient member (200) disposed in a cavity (202) in the body, and an anti-rotation member (197) biased away from the body by the resilient member. The anti-rotation member of some embodiments extends radially outward from the body.</p> |
