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Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration

A technology of axial vibration and hydraulic pulse, which is applied in vibration drilling and other directions, can solve the problems of low reliability, complex structure, and inability to be popularized on a large scale

Inactive Publication Date: 2016-03-23
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current axial vibration drilling tools are complex in structure and low in reliability, and cannot meet the requirements of long-term use under complex downhole conditions, so they cannot be popularized on a large scale

Method used

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  • Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration
  • Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration
  • Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration

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Embodiment Construction

[0018] figure 1 It is a schematic diagram of the assembly of the disc spring of the present invention in its natural state. The present invention includes a body, a pulse generator and an axial vibration device. The main body is composed of an upper tube (1) and a lower tube (19), which are connected by male and female buckles. The pulse generator is composed of the guide fluid (3), the impeller seat (5), the impeller and the impeller shaft (4), the vibrating nozzle (6), and the nozzle seat (7). When installing, install the impeller and the shaft (4) on the impeller seat (5), then install the guide fluid (3), the impeller seat (5), the vibrating nozzle (6), and the nozzle seat (7) in the upper cylinder (1) in sequence. The axial vibration device is composed of a pressure bearing surface (8), a piston part, a disc spring part, and a central rod (18); the piston part from the inside to the outside is the piston (10), the oil seal (11), and the piston sleeve (9) When installing, ...

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Abstract

The invention discloses a well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration. By means of the method and device, axial impact vibration can be uniformly applied to a drill bit or a pipe column in the welling drilling process. According to the technical scheme, the device is mainly composed of a body, a pulse generating device and an axial vibration device; the pulse generating device is composed of a guiding object, an impeller seat, impellers and a vibration nozzle; the axial vibration device is composed of a pressure stressed face, a piston portion, a central rod and a disc spring portion; the piston portion is composed of a piston bush, an oil seal and a piston; the disc spring portion is composed of a disc spring upper pressing sleeve, a disc spring adjusting sleeve, a disc spring protecting sleeve, a disc spring set, a disc spring core bar and a disc spring seat. Compared with other well drilling tools, by means of the well drilling method and device, stable and uniform axial vibration can be generated, and frictional resistance generated by 'pressure supporting' in a horizontal well is lowered; when the device is installed between a drill collar and a drill bit, stable and uniform axial force can be provided for the drill bit, and well drilling efficiency is improved.

Description

Technical field [0001] The invention relates to the field of drilling engineering, and is a new type of downhole speed-increasing tool field. Background technique [0002] (1) During the drilling process, the power of the broken bottom hole rock is transmitted from the ground power system to the drill bit through the downhole drilling tool. In the traditional drilling method, the problems of power transmission, conversion, distribution and utilization have always been inefficient, especially in large In displacement wells and long horizontal wells, due to the increase in the contact area between the wellbore and the well wall, the frictional resistance increases, forming a phenomenon of "back pressure", the drilling pressure cannot be transmitted to the drill bit, the ROP is low, and the drilling cost is high. On the other hand, the drill bit is prone to holding up and jumping during drilling, which affects stable drilling and affects the ROP. [0003] (2) The pulse generators use...

Claims

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Application Information

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IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 黄中伟李根生韦明辉牛继磊田守嶒史怀忠宋先知王海柱盛茂张毅
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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