![]() The top one is for the torque and the bottom one is a backup tong. Operational Two tongs are used and positioned on the 2 tool joints. The automatic spinning wrench is now replacing the spinning chain in many drilling rigs. Spinning was historically done with the spinning chain, but this was dangerous and the safety of all on the drill floor depended on the skill and experience of the man throwing the chain. The top one is for the torque and the bottom one as a backup tong. Two tongs are used and positioned on the 2 tool joints. Torque connection to tighten it (Make-up torque) Viceversa for Breakdown operations.įor DP and DC make up torque values are indicated in API RG 7G. ![]()
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