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A high-speed percussion drilling tool

A drilling tool and high-speed impact technology, which is applied to drilling equipment, driving devices for drilling in boreholes, earthwork drilling and production, etc., can solve the problems of low efficiency in hard formations and increased drilling costs, and achieve favorable crushing, reliable performance, and high speed high effect

Inactive Publication Date: 2018-12-21
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the increase of drilling depth, the hardness and strength of the formation are significantly improved, and the efficiency of drilling in hard formations is generally low, which greatly increases the drilling cost

Method used

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  • A high-speed percussion drilling tool
  • A high-speed percussion drilling tool
  • A high-speed percussion drilling tool

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Experimental program
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Embodiment Construction

[0014] Such as figure 1 and figure 2 As shown, a high-speed impact drilling tool is composed of an upper joint 1, a locking cap 2, a turbine assembly 3, a rotating shaft 4, a power housing 5, a thrust bearing 6, a hammer body 7, a sleeve 8, a steel ball 9, Hammer and anvil cylinder 10, outer cylinder 11, disc spring 12, disc spring seat 13, drive shaft 14 and anti-drop cap 15 constitute; Drill bit screw connection; a stepped surface is set in the middle of the inner cavity of the power housing 5, and a circle of raised steps is set at the lower part of the inner cavity of the power housing 5; the turbine assembly 3 is assembled from turbine stator blades and turbine rotor blades, and the turbine assembly 3 Put it into the inner cavity of the power housing 5; the lower end of the upper joint 1 is connected with the upper end of the power housing 5 with screws, and the lower end surface of the upper joint 1 and the step surface in the middle of the inner cavity of the power ho...

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Abstract

The invention relates to a high-speed percussion drilling tool for drilling in hard formations in petroleum and natural gas industries and solves the problem of low efficiency of drilling on hard formations. According to the technical scheme, the upper end of an upper connector is in screwed connection with an upper drilling string, and the lower end of a transmission shaft is in screw connection with a drill bit; a turbine assembly is arranged in an inner cavity of a power casing; a thrust bearing is mounted on a bulged step at the lower part of the inner cavity of the power casing, and a bulged step of the middle excircle of a rotary shaft is attached to the thrust bearing; a hammer body is nested on a spline shaft at the lower part of the rotary shaft; an inner cavity of a sleeve is nested on the excircle of the hammer body, and two steel balls are put into two through holes in the middle of the sleeve and can slide in cylindrical cam grooves of the excircle of the hammer body; a disc spring is mounted between a disk spring base and a hammer anvil cylinder; the upper end of an outer cylinder is in screwed connection with the lower end of the power casing, and the lower end of the outer cylinder is in screw connection with an anti-falling cap. The tool can provide high-frequency alternating axial force while outputting torque, thereby facilitating rock breaking on the hard formations, accordingly, the efficiency of drilling on the hard formations is improved, and the drilling cost is reduced.

Description

technical field [0001] The invention relates to a high-speed percussion drilling tool used for drilling operations in hard formations in the oil and gas industry. Background technique [0002] In the oil and gas industry, drilling operations have the characteristics of long cycle, high investment, high risk, and high technical requirements. With the increase of resource exploitation, the development of deep wells and ultra-deep wells becomes more and more important, and the requirements for drilling technology are further improved. . With the increase of the drilling depth, the hardness and strength of the formation are significantly improved, and the efficiency of drilling in hard formations is generally low, which greatly increases the drilling cost. [0003] For drilling in hard formations, percussion drilling can significantly improve drilling efficiency. Its mechanism is to allow rocks to be torsionally cut and at the same time withstand high-frequency alternating WOB,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/16
CPCE21B4/16
Inventor 张梁周加伟李镕成梁政赵勇
Owner SOUTHWEST PETROLEUM UNIV
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