Hydraulic supercharged jet flow drilling tool

Abstract

The invention designs a hydraulic supercharged jet flow drilling tool, and belongs to the technical field of borehole operation tools for petroleum and natural gas. The hydraulic supercharged jet flowdrilling tool comprises an upper connector, a lower connector, a shell, an inner tube, an outer barrel and a plunger rod. The upper connector is mounted at one end of the shell, and the lower connector is mounted at the other end of the shell. A hydraulic cylinder is mounted in the shell through a mounting base. The outer barrel is mounted in the shell above the hydraulic cylinder. The plunger rod is arranged in the hydraulic cylinder. One end of the plunger rod extends to the upper side of the hydraulic cylinder. The plunger rod extending to the upper side of the hydraulic cylinder is connected with the outer barrel in a threaded mode. The inner tube is mounted in the shell above the outer barrel. One end of the inner tube extends into the outer barrel. The drilling tool has the advantages that the structure is simple, impulses are stable, and harmful impact is avoided; difficulty in processing and mounting due to complex flow passages of existing superchargers is eliminated, and problems of the harmful impacts of steering and reciprocating mechanisms are solved; the service life and working reliability of the drilling tool are improved effectively, and the drilling tool has positive significance in drilling efficiency improvement.

Description

technical field [0001] The invention relates to a hydraulic pressurized jet drilling tool, which belongs to the technical field of downhole operation tools for petroleum and natural gas. Background technique [0002] At present, as the proportion of deep wells and ultra-deep wells in oil fields increases, the drilling speed will drop significantly when drilling encounters hard formations, and it is difficult for ordinary drilling tools to meet the construction requirements. Domestic studies have shown that downhole pressurized auxiliary drilling can greatly increase the ROP in oil and gas well drilling. Foreign countries have developed a high-pressure jet assisted drilling system. Increase the ROP by 2-3 times. However, the downhole pressurization method only needs to add a pressurization device above the drill bit, without changing the existing equipment, and is easy to manufacture. [0003] Hydraulic pressurized jet technology is a technology that uses a specially design...

AI Technical Summary

Problems solved by technology

This type of device has a good boosting effect, but there are also disadvantages: the flow path of the booster is complicated, which causes great difficulties in processing and installation; the reversing and reciprocating mechanisms of the booster device have harmful impacts. Therefore, it is necessary to develop a Simple structure, stable pulse, no harmful impact, simple connection and easy installation

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