New Axial Impact Tool Based on Turbine and Cam

A technology of axial impact and turbine, applied in the direction of drilling tools, drilling equipment and methods, driving devices for combined rotary drilling, etc., can solve problems such as increased hardness and strength, complex working environment, and low rock breaking efficiency of the drill bit. Achieve the effect of increasing the service life and improving the rock breaking efficiency

Active Publication Date: 2018-10-30
徐州统一电机有限公司
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  • Claims
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AI Technical Summary

Problems solved by technology

The formation working environment faced by the drilling project is more complex, and the drilling depth continues to increase, and the hardness and strength of the rock will increase significantly under the confining pressure of the bottom layer, resulting in low rock breaking efficiency of the drill bit

Method used

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  • New Axial Impact Tool Based on Turbine and Cam
  • New Axial Impact Tool Based on Turbine and Cam
  • New Axial Impact Tool Based on Turbine and Cam

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing:

[0022] See attached figure 1 , a new type of axial impact tool based on a turbine and a cam, including an outer shell, an impact assembly, a reducer, a guide assembly, and a turbine assembly. It is characterized in that: the impact assembly, reducer, diversion assembly, turbine assembly; the impact assembly includes salvage shaft sleeve 1, limit sleeve a2, diversion sleeve a3, O-ring seal a4, upper impact cylinder 5, salvage shaft 6, O Type seal ring b7, lower impact cylinder 8, O-type seal ring c9, roller a32, O-type seal ring a4 is installed on the inner wall of upper impact cylinder 5, O-type seal ring c9 is installed on the outer wall of lower impact cylinder 8, and roller a32 is circumferentially spaced 120°evenly arranged at the front end of the lower impact cylinder 8, the upper impact cylinder 5 is loaded from the rear end of the salvage shaft 6, the lower impact c...

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Abstract

The invention relates to a novel axial impact tool based on a turbine and a cam. The novel axial impact tool comprises an outer shell, an impact assembly, a speed reducer, a flow guide assembly and a turbine assembly; the novel axial impact tool adopts the technical scheme that an upper part is connected with a drill string; a lower part is connected with a screw drill or a turbine drill; during operation, a drilling fluid enters the outer shell to drive the turbine assembly to rotate at a high speed; the high-speed rotation of the turbine assembly is reduced to an appropriate operating speed of the cam by the speed reducer; periodic axial mechanical vibration and hydraulic pulse are produced by matched movement of the cam and a roller as well as axial periodic movement of an upper impact cylinder, a lower impact cylinder and an inner flow guide cylinder; a flow of the drilling fluid entering the screw drill or the turbine drill changes periodically; a drill bit generates relatively large axial impact at a relatively low rotating speed and generates relatively small axial impact at a relatively high rotating speed. The novel axial impact tool provided by the invention can effectively increase mechanical drilling speed and service life of the drill bit and improve rock breaking efficiency.

Description

technical field [0001] The invention relates to a novel axial impact tool based on a turbine and a cam used in the field of oil and gas drilling engineering. Background technique [0002] With the continuous development of the economy, the demand for oil and gas is increasing, while the shallow oil and gas resources in my country are becoming more and more exhausted. The oil and gas development technology continues to improve, the depth of oil and gas wells increases, and the number of deep and ultra-deep wells increases. The formation working environment faced by the drilling project is more complicated, and the drilling depth continues to increase, and the hardness and strength of the rock will increase significantly under the confining pressure of the bottom layer, resulting in low rock breaking efficiency of the drill bit. Now the more effective drilling tools are mainly rotary drilling tools, which apply periodic impact loads to the drill bit while rotating and drilling...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B6/00E21B7/00E21B10/44E21B12/00
CPCE21B6/00E21B7/00E21B10/445E21B12/00
Inventor 田家林何虹志杨琳熊洁周思奇周仪黎根银
Owner 徐州统一电机有限公司
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