A Drilling Tool Using Turbine to Realize Rotating Impact

Abstract

The invention relates to a drilling tool for achieving rotating impact through a turbine in the field of petroleum drilling. The drilling tool can convert pressure energy of mud into rotating impact of an impact hammer. According to the technical scheme, an upper joint, an upper shell and a lower shell are matched through threads in sequence and are fixed to form a cavity inside, and a nut, a turbine shaft, a central pipe, the impact hammer and an anvil block are sequentially located in the cavity from top to bottom; the upper end of the turbine shaft is connected with the nut through threads, and the lower end of the turbine shaft is connected with the central pipe through threads; a turbine rotor is in spline fit with the turbine shaft; six through holes are evenly distributed in the circumferential direction of the central pipe, and the lower end of the central pipe is connected with the impact hammer through threads; a sleeve is connected with the lower shell through threads; a disc spring is clamped in the middle through the shaft shoulder of a sleeve and the shaft shoulder of the central pipe; the lower end face of the impact hammer is provided with a rectangular water passing channel and matched with the end face of the anvil block; and a piston is connected with the anvil block through threads, and symmetrical ventilation holes are formed in the circumferential direction of the shaft shoulder of the piston. The drilling tool can generate periodical rotating impact on a lower drilling rig, effectively improve the rock breaking efficiency of a drill and reduce drilling cost.

Description

technical field [0001] The invention relates to a drilling tool for oil and gas drilling, geological drilling and other fields, which utilizes a turbine to realize rotary impact. Background technique [0002] With the continuous increase of oil consumption, shallow oil fields can no longer meet the needs of human beings, and oil extraction is developing in the direction of deep wells and ultra-deep wells with large oil reserves, complex geology and difficult drilling. What conventional drilling mainly adopts now is to utilize the rotary table to drive the drill string to rotate the drill bit to break the drilling method (rotary drilling) of the rock at the bottom of the hole. However, when drilling deep and ultra-deep wells, the rock is often hard and the working conditions are complicated. Using traditional methods often leads to problems such as low rock-breaking efficiency of the drill bit and a decrease in the mechanical speed of penetration. [0003] At present, impact...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of the unsatisfactory use effect of the existing hydraulic impactor and the low rock-breaking efficiency of the drill bit, the present invention provides a downhole tool that utilizes a turbine to achieve rotary impact

Images