| 摘要 |
<p>The present invention relates to a blowout preventer (1) for being mounted on a well head (2), comprising a plurality of valves (3,4) arranged in fluid communication with each other, connected and forming a tubular pipe enclosing a cavity (10) being in fluid communication with the well head when the blowout preventer is mounted onto the well head and at least one plug (37) in the well head has been removed, wherein the blowout preventer further comprises a chamber (6) and a piston (7) arranged inside the chamber dividing the chamber into a first chamber part (8) and a second chamber part (9), the first chamber part being in fluid communication with the cavity and the second chamber part being filled with a compressible fluid, such as gas. Furthermore, the invention relates to a well intervention tool (100) and a well intervention system (200).</p> |
