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Method for improving percussion drilling capability of screw drill and pulse screw

A technology of screw drilling tools and percussion drilling, which is applied to drilling equipment, vibration drilling, and driving devices for drilling in boreholes. It has the effect of percussion drilling ability, increasing output torque and rotating speed, and improving drilling efficiency

Pending Publication Date: 2018-05-15
GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, domestic oil and gas exploration and development are developing towards deep formations, and there are more and more hard and unbreakable formations. The increase in well depth causes problems such as large drill bit diameter, long well section, and slow mechanical drilling speed. Construction progress and drilling costs
However, the structure of the current pulse drilling tools tends to be complicated, the manufacturing cost increases, and the system stability is poor and the service life is short

Method used

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  • Method for improving percussion drilling capability of screw drill and pulse screw
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  • Method for improving percussion drilling capability of screw drill and pulse screw

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Embodiment of the present invention: a method for improving the percussion drilling capability of a screw drilling tool. The method improves the motor assembly 2 and the pulse cardan shaft assembly 3 in the screw drilling tool so that it has hydraulic pulse jet and shaft The function of high-frequency impact, thereby improving the impact drilling ability of the screw drilling tool; the stator 2-1 and the rotor 2-2 of the motor assembly 2 adopt a spiral structure, thereby extending the lead of the motor assembly 2 and increasing The number of stages of the motor assembly 2 and the number of heads of the stator and rotor, while increasing the displacement of the mud pump system, can increase the output torque and speed of the motor assembly 2; ...

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Abstract

The invention discloses a method for improving a percussion drilling capability of a screw drill and a pulse screw. The pulse screw includes an anti-drop conversion assembly, a motor assembly, a pulsecardan shaft assembly and a transmission shaft assembly; the anti-drop conversion assembly comprises an anti-drop conversion connector head, an anti-drop disc and an anti-drop connecting rod, the anti-drop disc is arranged in the anti-drop conversion connector head, the upper end of the anti-drop connecting rod is sleeved with the anti-drop disc and fixed through tightening nuts, and the other end of the anti-drop connecting rod is connected with the upper end of a rotator of the motor assembly. The method is simple in structure, safe and reliable. Not only can output torque and rotation speed be increased through the motor assembly, but also the percussion drilling capability of the screw drill can be improved through the pulse cardan shaft assembly, and the drilling efficiency is effectively improved.

Description

technical field [0001] The invention relates to a method for improving the percussion drilling capability of a screw drilling tool and a pulse screw, belonging to the technical field of drilling. Background technique [0002] At present, domestic oil and gas exploration and development are developing towards deep formations, and there are more and more hard and unbreakable formations. The increase in well depth causes problems such as large drill bit diameter, long well section, and slow mechanical drilling speed. Construction progress and drilling costs. Therefore, finding new and efficient rock-breaking technologies is of great significance to further increase the drilling speed in these areas, reduce drilling costs, and shorten the exploration and development cycle. Both field practice and laboratory test research have shown that if an appropriate periodic impact force is applied to the drill bit, it will help to improve the rock-breaking drilling efficiency of the drill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/24E21B4/14E21B4/00E21B10/60
CPCE21B4/003E21B4/006E21B4/14E21B7/24E21B10/60
Inventor 黄瑞海黄海军周洪彬孙启峰郑波强张发贵曹良波
Owner GUIZHOU GAOFENG GASOLINEEUM MACHINERY
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