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Water injection fracturing device and method while drilling

A technology of drilling while drilling and drilling bits, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc. It can solve problems such as complex process, affecting drilling stability, drilling disturbance, etc., and achieves simple equipment and effective application Significant, easy-to-operate effect

Pending Publication Date: 2021-10-19
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only the process is complicated, but also there are problems such as multiple disturbances to the drilling and affecting the stability of the drilling

Method used

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  • Water injection fracturing device and method while drilling
  • Water injection fracturing device and method while drilling
  • Water injection fracturing device and method while drilling

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Experimental program
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Effect test

Embodiment Construction

[0030] Depend on figure 1 It can be seen that the device involved in the present invention is mainly composed of 1. high-pressure resistant sealing drill pipe; 2. torsion-resistant high-strength packer; 3. torsion-resistant high-strength constant pressure throttle; constitute.

[0031] In the ball-seated drill bit assembly 4, the ball seat is connected to the high-pressure sealed drill pipe 1, and the drill pipe is sequentially connected with the torsion-resistant high-strength packer 2, the torsion-resistant high-strength constant pressure throttle 3, etc., and the drill pipe is connected with the The drilling rig is used as a set, connected with the fracturing pump unit during fracturing, and low-density balls 5 are put in for setting and fracturing.

[0032] The torsion-resistant high-strength constant-pressure restrictor 3 is made of high-strength materials as a whole to enhance its torsion-resistant and anti-friction properties. Its thickened outer wall 6 has a radial w...

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PUM

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Abstract

The invention relates to a water injection fracturing device and method while drilling, belongs to the field of coal mine underground drilling and fracturing engineering, and particularly relates to the water injection fracturing device and method while drilling. The water injection fracturing device and method while drilling solve the problems that in a traditional hydraulic fracturing technology, drilling and fracturing construction are conducted step by step, the working procedures of repeated drilling up and down and drilling tool replacement are complex, and stability is affected by repeated disturbance of drilling before fracturing. By means of the water injection fracturing device while drilling and a matched technological method, water injection fracturing of layer penetrating or bedding drilling can be conducted in time in the position next to drilling construction, the working procedures of additional drilling up and down, drilling tool replacement and the like are not needed, equipment is simple, operation is convenient, risks are controllable, and the field application effect is remarkable.

Description

technical field [0001] The invention relates to a water injection fracturing device and method, belonging to the field of coal mine underground drilling and fracturing engineering, and in particular to a water injection fracturing device and method while drilling. Background technique [0002] Hydraulic fracturing technology is an important means of enhanced coal seam gas drainage and rock burst prevention and control. With the continuous development and progress of coal mine drilling equipment and hydraulic fracturing equipment, underground hydraulic fracturing technology has achieved open hole fracturing, sealing Quick sealing and other functions. However, in the traditional downhole hydraulic fracturing technology, the drilling and fracturing construction need to be carried out step by step, that is, the drilling construction is carried out according to the predetermined plan, and the drilling tool in the hole is withdrawn after the drilling construction is completed, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26
CPCE21B43/26
Inventor 赵继展张静非郑凯歌陈志胜陈冬冬龙威成贾秉义
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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