Tong system for tripping rods and tubulars

摘要

The present disclosure provides a tong system which includes a tong assembly and at least one string gripping device. The tong assembly is configured to engage a rod or tubular string at the junction between a first rod or tubular and a second rod or tubular of a rod or tubular string and unthread the first rod or tubular from the second rod or tubular. The tong assembly can also thread the first rod or tubular onto the rod or tubular string. The string gripping device is configured to hold a tubular string for at least a portion of the time. The tong system further holds the rod or tubular string against torque applied onto the first rod or tubular by the tong assembly.

主权项

1. A tong system for handling rods, comprising:
a base; a rod clamp disposed on the base, the rod clamp comprising a first clamp block and a second clamp block opposite the first clamp block, wherein the first clamp block comprises a first clamp piston and a first clamp insert disposed at a distal end of the first clamp piston, and the second clamp block comprises a second clamp piston and a second clamp insert disposed at a distal end of the second clamp piston, the first and second clamp inserts facing each other; a rod positioner assembly coupled above the rod clamp via at least one hydraulic cylinder, the rod positioner assembly configured to position and hold a rod via an opening formed therein; a tong assembly disposed on the base via a riser and a horizontal track, the tong assembly comprising a rod handling tong and a lower centralizer guide positioned above the rod handling tong, the lower centralizer guide configured to receive and align the first rod with the rod string and the rod handling tong configured to rotate a first rod, coupling or decoupling the first rod to or from the rod string; and a centralizer arm extending from the base to a height above the lower centralizer guide, the centralizer arm comprising a guide member and configured to guide the first rod to or from a carriage, wherein the rod positioner assembly, comprises:
a rod positioner comprising a first opening and a rod retainer configured to brace onto a support beam and support at least a portion of the weight of the rod;a rod flat clamp comprising a second opening aligned with the first opening, the rod flat clamp comprising one or more angled clamp device configured to move towards the second opening, engage a flat surface on the rod, and hold the rod in such a position; anda rod coupling clamp comprising a third opening aligned with the first and second openings, the coupling clamp comprising one or more clamp devices configured to move towards the third opening, engage a rod coupling of the rod, and hold the rod coupling of the rod.