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Eddy pulse impact drill bit

A technology of eddy current pulse and impact drill bit, which is applied in the direction of drill bit, earthwork drilling, drilling equipment, etc. It can solve problems such as unstable tool face, poor drilling stability, and sliding pressure of the drill bit, so as to improve stability and drilling speed, Reduce the intensity and ease the dragging effect

Pending Publication Date: 2018-10-02
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a kind of eddy current pulse impact drill bit, which overcomes 1: low rock-breaking efficiency and slow speed in the prior art, 2: unstable tool face, easy to generate drill bit sliding drag Phenomenon 3: Poor drilling stability and other issues

Method used

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specific Embodiment approach

[0023] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention Any modification of the structure, change of the proportional relationship or adjustment of the size shall still fall within the scope of the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. In the range.

[0024] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present inventi...

Embodiment 1

[0026] Such as Figure 1~2 As shown, the present invention discloses a PDC bit body 8 and an upper joint, wherein the PDC bit body 8 is connected to the upper joint and the PDC bit body and the upper joint are internally communicated, and the inner cavity of the PDC bit body 8 is provided with a flow channel integrally formed therewith Distributing baffle 5 , the inner cavity of the upper joint is provided with eddy current pulse inner core 7 , wherein one end of eddy current pulse inner core 7 is embedded in flow channel distribution baffle 5 .

Embodiment 2

[0028] Such as Figure 1~2 As shown, the present invention discloses a PDC bit body 8 and an upper joint, wherein the PDC bit body 8 is connected to the upper joint and the PDC bit body and the upper joint are internally communicated, and the inner cavity of the PDC bit body 8 is provided with a flow channel integrally formed therewith Distributing baffle 5 , the inner cavity of the upper joint is provided with eddy current pulse inner core 7 , wherein one end of eddy current pulse inner core 7 is embedded in flow channel distribution baffle 5 .

[0029] Such as Figure 1~2 As shown, preferably, the PDC bit body 8 is also provided with a PDC bit blade 13, a flute 9, a drill nozzle water hole 6 and an impact-resistant diamond compact 2, wherein the PDC bit body 8 crown surface is provided with multiple A PDC drill bit blade 13, a plurality of impact-resistant diamond compacts 2 are arranged on the plurality of PDC drill bit blades 13, wherein a drill nozzle water hole 6 is arr...

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Abstract

The invention discloses an eddy pulse impact drill bit comprising a PDC drill bit body and an upper joint. The PDC drill bit body is connected with the upper joint and communicates with the interior of the upper joint; an inner cavity of the PDC drill bit body is provided with a flow channel distribution baffle integrally formed with the PDC drill bit body; and an inner cavity of the upper joint is provided with an eddy pulse inner core, and one end of the eddy pulse inner core is embedded in the flow channel distribution baffle. The eddy pulse impact drill bit with the impact effect can pre-impact rock, the strength of the rock is greatly reduced, and the stress of the surrounding rock is released; due to the fact that the stress of the rock is released, transverse force applied to the PDC drill bit in the secondary drilling process and stick-slip vibration of a drill pipe are greatly reduced, the service life of the drill bit and a drilling tool are prolonged to the great extent, thedrill-down time and cost are reduced, the backing pressure phenomenon in sliding construction is greatly relieved, thus the stability of well drilling is improved, and the drilling speed of well drilling is increased.

Description

technical field [0001] The invention belongs to the technical field of mechanical drilling tools for exploitation of oil and gas resources, and in particular relates to an eddy current pulse impact drill bit. Background technique [0002] With the increasing exploration and development of oil and gas resources at home and abroad, the exploitation of oil and gas resources has gradually developed to deep wells, ultra-deep wells and complex difficult-to-drill formations. The drill bit is a tool that directly acts on rocks in oil and gas drilling. However, the traditional PDC bit is During the drilling process, the rock-breaking efficiency is low, the speed is slow, and sliding pressure occurs from time to time, which cannot meet the current drilling process requirements for speed increase and efficiency increase. Therefore, the life of the drill bit and the compatibility between the drill bit and the rock are crucial to improving the drilling speed. And play an important role i...

Claims

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Application Information

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IPC IPC(8): E21B10/36E21B10/38
CPCE21B10/36E21B10/38
Inventor 何璟彬陈霖陈伟林杨森宋顺平李德波张盘龙王伟良丛成白秀丽徐媛媛李冠英刘晓燕赵江岭
Owner BC P INC CHINA NAT PETROLEUM CORP
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