A high frequency drilling hammer

Abstract

The invention relates to a high-frequency drilling impactor which comprises a nipple housing, an upper joint, a lower joint, a fluidic element, an inlet spray nozzle, an anvil, a piston cylinder with a dumbbell-shaped hydraulic cavity and a dumbbell-shaped piston, wherein the outer diameter of the piston cylinder is smaller than the inner diameter of the nipple housing, so that an annulus is reserved between the piston cylinder and the nipple housing; four axial cylinder body outer side ribs are uniformly arranged outside the piston cylinder along the peripheral direction so as to divide the annulus between the piston cylinder and the nipple housing into four independent flow passages which are respectively used as a working flow passage, a reset flow passage, a high-pressure bypass flow passage and a low-pressure bypass flow passage; the fluidic element provides alternating pressure for the working flow passage and the reset flow passage, so that upper cavity pressure and lower cavity pressure of the piston cylinder are alternately changed and the piston vibrates up and down in the piston cylinder. The high-frequency drilling impactor can be widely applied to petroleum drilling, can effectively solve the difficult problem of drilling of a hard formation and accelerates the progress of exploration and development of an oil and gas field.

Description

technical field [0001] The invention relates to a drilling speed-increasing tool, in particular to a high-frequency drilling impactor which can adjust torque impact force and axial impact force according to different formations to achieve the optimal use state of the impactor. Background technique [0002] In order to meet the needs of the development of oil and gas exploration work, oil drilling work is mainly extended to deep and hard and old formation blocks. During the process of deep well drilling and shallow drilling in many blocks in the west, the difficulty of hard formation drilling is very prominent. For example, relatively hard formations have been encountered in the exploration and development drilling work in the Sulige area, the eastern Sichuan oilfield, and the northern Tarim Basin oilfield. At present, the rotary drilling technology of traditional roller cone bit, PDC (Polycrystalline Diamond Composite, polycrystalline diamond composite sheet) bit combined wi...

AI Technical Summary

Problems solved by technology

However, when these rotary drilling technologies encounter hard formations, the drilling efficiency is very low, the life of the drill bit is short, the drilling cycle is long, and the cost is high

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