| 摘要 |
A mounting system for a fill-up and circulating tool on the rig hoisting system is disclosed. In the preferred embodiment, the tool is supported on one of the bails and it driven to rotate around the longitudinal axis of one of the bails. A combined vertical and rotational movement is imparted by the mounting system to allow the fill-up and circulating tool to be raised and swung out from between the bails to allow normal drilling or tripping. In the other position it can be swung over the tubular and lowered for sealing contact to allow fluids to pass in both directions to or from a pumping and storage system on the rig.
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