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Flow injection type impacter abrasion-proof inner casing cylinder and piston

A kind of impactor and jet type technology, which is applied in the drilling driving device, drilling equipment, earthwork drilling and other directions in the wellbore, can solve the problems of destroying the design target, etc., to improve the stability and reliability, reduce the friction gap, Avoid washout effects

Inactive Publication Date: 2010-12-22
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultimately defeats the established design goal - the service life of the jet impactor matches the service life of the drill bit

Method used

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  • Flow injection type impacter abrasion-proof inner casing cylinder and piston
  • Flow injection type impacter abrasion-proof inner casing cylinder and piston

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The outer cylinder 1 is connected with the middle joint 15 through threads, and the inner cylinder 2 is set in the outer cylinder 1, pressed and contacted by the cylinder head 12, and positioned by the positioning pin 14 and the cylinder head 12. The shoulder surface of the cylinder head 12 and the middle joint 15 Compression, the upper inner wall of the inner cylinder 2 is equipped with an inner cylinder wear-resistant sleeve 3 made of hard alloy, the inner cylinder wear-resistant sleeve 3 is through the shoulder surface of the inner cylinder 2 and the cylinder head 12 Compression fit is fixed, and cylinder head 12 is equipped with the cylinder head wear-resistant ring 10 that is processed by cemented carbide, and cylinder head wear-resistant ring 10 is compressed on the shoulder surface on the cylinder head 12 by circlip 9. The upper part of the piston 7 is equipped with a piston wear-resistant ring 6 made of hard alloy. The lower part of the piston wear-resistant ring...

Embodiment 2

[0018] The outer cylinder 1 is connected with the middle joint 15 through threads, and the inner cylinder 2 is set in the outer cylinder 1, pressed and contacted by the cylinder head 12, and positioned by the positioning pin 14 and the cylinder head 12. The shoulder surface of the cylinder head 12 and the middle joint 15 Compression, the upper inner wall of the inner cylinder 2 is equipped with an inner cylinder wear-resistant sleeve 3 made of wear-resistant ceramics. Compression fit is fixed, and cylinder head 12 is equipped with the cylinder head wear-resistant ring 10 that is processed by wear-resistant ceramics, and cylinder head wear-resistant ring 10 is compressed on the shoulder surface on the cylinder head 12 by circlip 9. The upper part of the piston 7 is equipped with a piston wear-resistant ring 6 made of wear-resistant ceramics. The lower part of the piston wear-resistant ring 6 is in contact with the shoulder surface of the piston 7. The upper part is pressed by th...

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Abstract

The invention relates to an oil gas well drill, in particular to a jet-type hydro-hammer for oil gas drilling and punching drilling, wherein the upper part of a piston is provided with a piston wearing ring; the lower part of the piston wearing ring contacts a shoulder surface of a piston, and the upper part of the piston wearing ring is pressed through an upper positioning ring which is connected with the piston through threads; the lower part of the piston is provided with a piston wearing sleeve the lower part of which is pressed through a lower positioning ring; the upper part of an innercylinder is provided with an inner cylinder wearing sleeve; and a cylinder head is provided with a cylinder head wearing ring which is presses on a shoulder surface of the cylinder head through an elastic collar. The inner cylinder wearing sleeve, the piston wearing ring, the cylinder head wearing ring and the piston wearing sleeve which are made of cemented carbide on a friction segment of the inner cylinder and the piston are arranged, the friction clearance between the inner cylinder and the piston and leakage are reduced, thereby avoiding erosion of high-pressure and high-speed jet flow, further improving the stability and the reliability of fluidic elements and effectively prolonging the service life of devices.

Description

Technical field: [0001] The invention relates to an oil and gas drilling tool, in particular to a jet type hydraulic impactor for oil and gas drilling percussion drilling. Background technique [0002] Existing oil and gas drilling mainly adopts ordinary rotary drilling technology, combined with the use of roller cone bit, PDC bit, diamond bit and jet drilling technology. When drilling into hard rock formations, the drilling efficiency is very low, the service life of the bit is short, and construction The cycle is longer and the cost is higher. The hydraulic jet impact rotary drilling tool disclosed in CN2040529 adapts to water and low-solid phase mud as the flushing fluid. Once the solid phase content in the flushing fluid is high, the jet element will be worn and the piston and cylinder, piston and cylinder at the bottom will be worn. The wear between the lower end caps is also very serious, seriously affecting the stability and reliability of the drilling work. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/06
Inventor 彭枧明殷琨王清岩郑治川刘建林殷其雷赵志强
Owner JILIN UNIV