| 摘要 |
<p>Abstract A tool for removing a rubber element of an RCD from a drill stem, the tool having an upper pulling ring of a circumference sufficient to traverse around a rubber element, the ring having an open position and a closed position, the tool further having a lower stabilizing ring of a circumference sufficient to traverse around a drill pipe stump, the ring having an open position and a closed position, and the tool further having a plurality of chains suspending the lower stabilizing ring vertically below the upper pulling ring, as well as a hoist connection. 76 tt76 1'12</p> |
