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Electrode bit for coiled tubing high-voltage electrical pulse/mechanical composite drilling

A high-voltage electric pulse and coiled tubing technology, which is applied to drill bits, drilling equipment, earthwork drilling and production, etc., to achieve the effects of good technology inheritance, good liquid conditions, and improved drilling efficiency

Active Publication Date: 2019-04-05
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only drill vertical wells, so it is somewhat limited

Method used

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  • Electrode bit for coiled tubing high-voltage electrical pulse/mechanical composite drilling
  • Electrode bit for coiled tubing high-voltage electrical pulse/mechanical composite drilling
  • Electrode bit for coiled tubing high-voltage electrical pulse/mechanical composite drilling

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can also be implemented in other ways than those described here. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0025] Electrode bits for coiled tubing high-voltage electric pulse-mechanical composite drilling according to some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0026] figure 1 It is a schematic diagram of a vertical well drilled by the coiled tubing high-voltage electric pulse-mechanical composite rock-breaking drilling method. The entire dr...

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Abstract

The invention relates to an electrode bit for coiled tubing high-voltage electrical pulse / mechanical composite drilling, which structurally comprises a coaxial cable, an upper connector, insulator I,a transmission key, a bit collar, insulator II, a low-voltage ground electrode, a high-voltage center electrode and the like. A traditional rock-breaking bit and an electrode bit are combined herein;the electrode bit herein is suitable for drilling of both straight wells and oriented wells (including horizontal wells); the high-voltage electrical pulse drilling and coiled tubing drilling are combined, so that cable lowering is convenient; in addition, the electrode bit has the advantages of high rock-breaking efficiency, good well wall quality, low deep well drilling cost and the like.

Description

technical field [0001] The invention relates to a high-efficiency rock-breaking drilling bit used in the oil and gas drilling and development process, especially an electrode bit used for high-voltage electric pulse-mechanical composite drilling with cable coiled tubing. Background technique [0002] Oil drilling bit is a basic and important tool in the field of oil and gas exploration and development. At the same time, the rock-breaking drilling efficiency of the bit affects the cost and cycle of oil and gas resource development. When drilling deep and ultra-deep wells with high temperature and high pressure, traditional drill bits have disadvantages such as low drilling efficiency, difficult construction, and high drilling costs. Therefore, it is imperative to study new high-efficiency rock-breaking drilling technologies and matching high-efficiency rock-breaking drill bits. [0003] As far as the traditional drilling method is concerned, the active force of the drill bit...

Claims

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Application Information

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IPC IPC(8): E21B10/00E21B7/00
CPCE21B7/00E21B10/00
Inventor 祝效华罗云旭
Owner SOUTHWEST PETROLEUM UNIV
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