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Plasma hydraulic power rotary drilling tool

A technology of power rotation and plasma, which is applied in the direction of rotary drilling, rotary drilling rigs, drill bits, etc., can solve the problems of increased drilling cost, increased drilling fluid pressure loss along the way, high drilling fluid pressure, etc., to reduce drilling The effect of increasing costs and reducing requirements

Active Publication Date: 2017-05-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of conventional screw motor drive and turbine drive drilling are: (1) High drilling fluid pressure needs to be provided; (2) When drilling into deep formations, the loss of drilling fluid pressure along the way increases, and the ground needs to provide higher drilling fluid pressure. Drilling fluid pressure puts forward higher requirements on ground equipment such as mud pumps, which increases drilling costs

Method used

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  • Plasma hydraulic power rotary drilling tool
  • Plasma hydraulic power rotary drilling tool
  • Plasma hydraulic power rotary drilling tool

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Experimental program
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Effect test

Embodiment 1

[0022] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, the present invention includes a hydroelectric effect generating device and a hydrodynamic rotary drilling tool 22;

[0023] The hydroelectric effect generating device includes a drill pipe 21, an upper joint 19, a casing 1, a lower joint 20, a one-way valve body 2, a sealing ring 3, a spring 4, a negative terminal 5, a positive terminal 17, a high-voltage positive electrode 12. Negative electrode 11, first bolt 6, second bolt 15, central shaft 7, pressure cap 8, first insulating spacer ring 9, second insulating spacer ring 10, third insulating spacer ring 16, insulating spacer sleeve 13, Lower end cover 14, hollow cavity 18, inter-electrode gap 40, first annular through hole 41, second annular through hole 42, first central hole 43, second central hole 44, high voltage electrode cable 45 and negative electrode cable 46;

[0024] The upper end of the housing 1 has an internal thread to form an ...

Embodiment 2

[0027] refer to Figure 6 , Embodiment 2 is on the basis of Embodiment 1, the screw drilling tool 22 is replaced by a turbo drilling tool 29, and the structure of other parts is the same. During the drilling process, the plasma hydrodynamic rotary drilling tool is connected to the ground high-voltage pulse power supply and other drilling equipment through the high-voltage electrode cable 45 and the negative electrode cable 46 . The drilling fluid passed from the drill pipe 21 acts on the one-way valve body 2, and due to the pressure, the one-way valve body 2 and the sealing ring 5 compress the spring 4 and move downward, the fluid channel is opened, and the drilling fluid enters from the drill pipe 21 shell1. The high voltage generated by the ground high-voltage pulse discharge system 47 is transmitted to the high-voltage electrode 12 and the low-voltage electrode 11 through the high-voltage cable 45 and the negative electrode cable 46, and the gap 40 between the electrodes i...

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PUM

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Abstract

The invention discloses a plasma hydraulic power rotary drilling tool, and relates to the field of well drilling tools for geological exploration, petroleum, natural gas, oil shale and the like. According to the plasma hydraulic power rotary drilling tool, drilling liquid in an interelectrode gap is subjected to electro-discharge by a high-voltage pulse electro-discharge system through a high-voltage positive electrode and a high-voltage negative electrode, high-temperature high-pressure plasmas are generated by interelectrode breakdown, temperature and pressure are increased rapidly, the surrounding drilling liquid is compressed by swelling potential energy of the plasmas and pressure of heat radiation, formed water shock waves are injected into the hydraulic power rotary drilling tool, a transmission shaft is driven to rotate, and finally, a drill bit is driven to rotate to crush rock.

Description

technical field [0001] The invention relates to the field of drilling tools for geological exploration, petroleum, natural gas, oil shale, etc., in particular to a plasma hydraulic power rotary drilling tool. Background technique [0002] High-voltage pulse discharge in water refers to the current high-temperature and high-density plasma generated by breakdown between electrodes in the engineering fields of casting sand cleaning and casting stamping forming, forming arc discharge in the channel, and using its hydroelectric effect to achieve the goal. CN104563882A proposes a plasma drilling bit, which directly breaks rocks by using high-voltage pulse liquid-phase micro-discharge, and the drill bit does not need to be in contact with the rock surface; patent CN105284712A discloses a high-voltage pulse electric field sterilization device for aquaculture, which generates The high-voltage pulsed electric field kills bacteria and other harmful impurities in the culture pond water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02E21B10/00E21B7/00
CPCE21B3/02E21B7/00E21B10/00
Inventor 孙友宏韩婧李强郭威赵帅吕士东周科
Owner JILIN UNIV