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Dual Frequency Axial Impact Tool

A technology of axial impact and tools, which is applied in earthwork drilling, driving devices for drilling in boreholes, and drilling equipment. It can solve problems such as short life of drilling tools, high drilling costs, and impact on the overall benefits of oil drilling and development. The effect of increasing the service life and improving the rock breaking efficiency

Inactive Publication Date: 2019-05-10
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the drilling process, formation hardness and drilling difficulty increase exponentially with the increase of well depth, especially in deep hard formations, there are problems of low drilling efficiency, short life of drilling tools, long drilling cycle and high drilling cost, which are serious Affecting the overall benefits of oil drilling and development, it is urgent to develop efficient rock-breaking drilling methods to improve the drilling efficiency of deep resources

Method used

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  • Dual Frequency Axial Impact Tool
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] See attached figure 1 , the dual-frequency axial impact tool includes an outer shell, an impact assembly, a reducer, and a diversion assembly. The impact assembly, the reducer, and the diversion assembly are sequentially arranged in the outer shell from back to front, and the impact assembly, deceleration The device and the deflector assembly are assembled into an internal whole, and the internal whole is packed into the outer shell; the outer shell includes an upper shell 29, a lower shell 22, an outer guide tube 21, a lower joint 24, an upper shell 29 and The lower casing 22 is connected by thread, and then the outer guide tube 21 is loaded from the front port of the lower casing 22, and the circumferential positioning is realized through the keyway of the lower port of the lower casing 22, and finally the lower casing 22 and the lower joint 24 Through screw conne...

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Abstract

The invention relates to a double-frequency axial impact tool, which comprises an outer shell, an impact assembly, a speed reducer and a diversion assembly. The invention is characterized in that a drill column is connected to the upper part of the double-frequency axial impact tool; a spiral drilling rig or a turbodrill is connected to the lower part of the double-frequency axial impact tool; theimpact assembly, the speed reducer and the diversion assembly are assembled into an interior entire body; the interior entire body is loaded into the outer shell; a drilling fluid enters the outer shell; a turbine is driven to rotate at a high speed; the high-speed rotation of the turbine is reduced to a working speed suitable for a cam through the speed reducer; through the cooperated movement of the cam and a rolling wheel, an upper impact barrel, a lower impact barrel and an inner diversion barrel axially move cyclically, periodic axial mechanical vibration and hydraulic pulse are produced, the flow of a drilling fluid entering the spiral drilling rig or the turbodrill is periodically changed, and a drill produces a larger axial impact at a lower rotation speed and produces a smaller axial impact at a higher rotation speed. According to the double-frequency axial impact tool provided by the invention, the mechanical drilling speed and the service life of the drill can be effectively improved, and the rock breaking efficiency is improved.

Description

technical field [0001] The invention relates to a dual-frequency axial impact tool used in the field of oil and gas drilling engineering. Background technique [0002] With the continuous exploitation of oil and gas resources, more and more problems are faced in the drilling process. During the drilling process, formation hardness and drilling difficulty increase exponentially with the increase of well depth, especially in deep hard formations, there are problems of low drilling efficiency, short life of drilling tools, long drilling cycle and high drilling cost, which are serious Affecting the overall benefits of oil drilling and development, it is urgent to develop efficient rock-breaking drilling methods to improve the drilling efficiency of deep resources. Now the more effective drilling tools are mainly rotary percussion drilling tools, the most important part of which is what we call the impactor. Nowadays, there are many types of impactors used in various countries ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B4/14
CPCE21B4/14
Inventor 田家林何虹志杨琳熊洁周思奇周仪黎根银
Owner SOUTHWEST PETROLEUM UNIV
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