Bidirectional oil pressure inner blind hole tool bit

Abstract

The invention belongs to the technical field of oil field production equipment, and particularly relates to a bidirectional oil pressure inner blind hole tool bit which comprises a tool bar tool bit and further comprises a small tool block, a limiting bolt, a piston, a piston cap and a gland, a piston cavity hole is formed in the tool bar tool bit, and an upper hydraulic hole channel and a lower hydraulic hole channel which are communicated with the piston cavity hole are formed in the end face of the tool bit. The upper hydraulic hole channel and the lower hydraulic hole channel are respectively connected with an upper copper oil pipe and a lower copper oil pipe; the gland is sleeved on the piston and is sealed through a first sealing ring, the piston cap is arranged on the piston and is fixed through a sunk screw, the piston is arranged in a piston cavity hole, the piston, the gland and the piston cavity hole are respectively sealed through a second sealing ring and a third sealing ring, and the gland is fixed through a screw; and the small cutter block and the limiting bolt are arranged on the cutter head of the cutter bar. The inner blind hole cutter bar solves the problems that an existing inner blind hole cutter bar is slow in retracting and high in failure rate, and is simple in structure, fast in retracting, low in failure rate, stable, reliable and durable.

Description

technical field [0001] The invention belongs to the technical field of oilfield production equipment, and in particular relates to a bidirectional oil pressure inner blind hole cutter head. Background technique [0002] Perforating equipment is a special equipment for oil field development and production. The penetration index of the perforator is an important indicator of the performance of the Peugeot perforator. The inner blind hole perforating gun extends the blind hole from the inside to the outside, increasing the The high blasting height of the perforating bullet is conducive to the full stretching and extension of the jet, which can effectively increase the penetration depth of the perforator. However, the limitation of its internal space greatly increases the difficulty of processing the inner blind hole. The conventional inner blind hole processing is to insert a slender tool rod into the gun body, and transmit the power to the front end of the tool rod through the...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a two-way hydraulic internal blind hole cutter head, which solves the problems of slow retraction and high failure rate of the inner blind hole cutter rod in the past. It has a simple structure, fast retraction, low failure rate and is stable and reliable. , durable, easy to promote and use on a large scale

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