| 摘要 |
A BOP cleaning tool comprising a pipe section (1) provided with a through central channel (5) and inner radial channels (70) in distinct levels to a distribution annulus (40) within an external tubular member (4) with external fins (6), - said tubular member (4) having and outer radial channels (71) from said distribution annulus (40) to nozzles (7) between said fins (6) for flushing fluid from said central channel (5) out into a BOP bore for washing cavities in said said BOP bore, wherein a flow control sleeve (50) having holes (51) is provided within said central channel (5), the said flow control sleeve (50) being displaceable from a radially closed initial first closed position (I) to a second position (II) with said holes (51) aligned with said inner radial channels (70) for starting flushing through said nozzles (7), and further displaceable to a radially closed third position (III) with said holes (51) out of alignment with said inner radial channels (70) for halting said flushing through said nozzles (7). |
