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Self-propelled high pressure water jet drill

A high-pressure water jet, self-propelled technology, applied in the direction of liquid/gas jet drilling, construction, etc., can solve the problems of high cost and poor economy of sidetracking horizontal well technology, so as to expand the diameter of the wellbore and increase the rock breaking speed , Strengthen the effect of rock breaking effect

Inactive Publication Date: 2018-05-29
SUZHOU TABINUO ELECTROMECHANICAL
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a radial horizontal well technology using high-pressure hydraulic jet as the main driving force for rock breaking in order to solve the problems of high cost and poor economy of the existing sidetracking horizontal well technology, especially a self-propelled high-pressure water jet drill

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  • Self-propelled high pressure water jet drill
  • Self-propelled high pressure water jet drill

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0015] Such as figure 1 with 2 As shown, this embodiment provides a self-advancing high-pressure water jet drill bit, which mainly includes a bit body 1, a turbine rotor 2, an upper wear-resistant steel ball 3, a lower wear-resistant steel ball 4, a baffle 5, and a blind hollow center The shaft 6 serves as a support. The blind hollow shaft 6 has an annular water outlet. The front end of the blind hollow shaft 6 is connected to the front end of the drill body 1. The drill body 1 is provided with a forward nozzle 7 and a rear nozzle 8; the left and right sides of the blind hollow shaft 6 The turbine rotor 2 is installed symmetrically on the side. The upper and lower ends of the turbine rotor 2 are ...

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Abstract

The invention discloses a self-propelled high pressure water jet drill mainly comprising a bit body, turbine rotors, an upper wear-resistant steel ball, a lower wear-resistant steel ball and a baffle.The self-propelled high pressure water jet drill is characterized in that a blind hollow shaft is arranged in the center as a support; an annular outlet is disposed on the blind hollow shaft; the front end of the blind hollow shaft is connected to the front end of the bit body; a forward nozzle and a backward nozzle are arranged on the bit body; both sides of the left and right side of the blindhollow shaft are symmetrically installed with the turbine rotor; both ends of the upper and lower end of the turbine rotor are processed with a spherical groove; with the upper and lower wear-resistant steel balls used for positioning, the upper wear-resistant steel ball is placed between the bit body and the spherical groove of the turbine rotor, and the lower wear-resistant steel ball is placedbetween the turbine rotor and the spherical groove of the baffle; the bit body and the internal baffle thereof are connected through screw threads. The self-propelled high pressure water jet drill hasthe advantages of realizing rapid continuous drilling of long holes in various rock formations, and having simple structure, reliable work and wide application prospects.

Description

Technical field [0001] The invention relates to a drilling tool that utilizes a high-pressure jet to efficiently and quickly break rocks, in particular to a self-advancing high-pressure jet nozzle for radial horizontal well drilling. Background technique [0002] With the continuous deepening of petroleum exploration and development, most of the domestic oil fields have entered the middle and late stages of production. The productivity of oil wells has declined, the extraction is difficult, the recovery rate is low, and the development cost is high. At present, the conventional sidetracking horizontal well technology is used in the development of old oilfields: firstly, a windowing tool such as a milling cone is used to open a window on the side of the casing through a whipstock, and then a sidetracking tool such as a single cone bit or a PDC bit is used to drive through the hole. Window conducts mechanical drilling of horizontal wells to restore the productivity of old wells. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/18E21B10/61
CPCE21B7/18E21B10/61
Inventor 杨保强
Owner SUZHOU TABINUO ELECTROMECHANICAL
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