| 摘要 |
A drill fluid collecting device, in which a space between a power tong (2) and a backup tong (4) is provided with collecting means, and in which, on their respective sides facing the space, the power tong (2) and the backup tong (4) are provided with a seal (56, 62) which is sealingly movable against a pipe (20, 22) located in the tongs and sealingly connected to its respective tong (2, 4). |
