Spiral self-centering drill rod fisher and control method thereof

Abstract

The invention belongs to the technical field of drilling, and discloses a spiral self-centering drill rod fisher and a control method thereof. The spiral self-centering drill rod fisher comprises a die tap, a spiral steel claw fixing device and a spiral steel claw, wherein a turnbuckle in the same direction as the die tap is arranged at the bottom of the die tap, and the spiral steel claw sleeves the outer side of the die tap; and the spiral steel claw fixing device is arranged on the outer side of the upper end of the die tap, and the die tap and the spiral steel claw are connected together through the turnbuckle and the spiral steel claw fixing device. According to the spiral self-centering drill rod fisher, the die tap and the spiral steel claw are connected together through the turnbuckle and the spiral steel claw fixing device, so that the risk that the spiral steel claw falls off in the drill rod fishing process is effectively reduced; a blade angle is arranged on the inner side of the spiral steel claw, so that the spiral steel claw can conveniently descend into a drill hole, additionally, the resistance when a drill rod is lifted is reduced, and the bottommost part is flat and is provided with an outer blade angle, so that the spiral steel claw can conveniently and efficiently grab the fallen or broken drill rod and straighten the fallen or broken drill rod.

Description

technical field [0001] The invention belongs to the technical field of drilling, in particular to a spiral self-supporting formal drill pipe overhauler. Background technique [0002] At present, geological drilling refers to a geological engineering that uses certain drilling machinery and technology to obtain rock cores below the surface and make reliable evaluations of geological and mineral resource parameters. Accidents in the hole are due to natural reasons or improper design, management, construction, and operation, and the normal drilling is interrupted due to falling objects, drill pipe breakage, drilling tool tripping, stuck drilling tools, and burned drill bits in the drilling hole. Especially drill pipe breakage processing is very difficult, needs to expend a large amount of manpower and material resources. [0003] The existing drill pipe fracture treatment method is to use the male cone to salvage the broken drill pipe section by section, but for the complex si...

AI Technical Summary

Problems solved by technology

[0006] The existing broken drill pipe fishing method is complicated for the situation in the hole. The dropped or broken drill pipe is closely attached to the hole wall, especially the horizontal hole and the inclined hole. In the case of close contact, it is very difficult to salvage the drill pipe

[0007] The difficulty of solving the above problems and defects is: the traditional salvage directly uses the drill pipe to directly connect the male cone or the female cone into the borehole for salvage. Since the dropped or broken drill pipe is tightly attached to the wall of the borehole, the male The cone or the female cone cannot be quickly connected with the drill pipe joint quickly. In most cases, the male cone will be staggered with the dropped drill pipe, causing the male cone to continuously rub against the hole wall at the position where the drill pipe breaks, so that the The diameter of the drilling hole is enlarged, and the salvage work is even more difficult

For horizontal holes and inclined holes, the probability of quickly connecting the male or female cone with the broken drill pipe joint is very low, and it is very difficult to fish the drill pipe

Images