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Automatic waterpower rectifying device for coal seam hydraulic drilling

A deviation correction device and hydraulic technology, applied in directional drilling and other directions, can solve the problems that affect the wellbore ventilation, drainage and energy extraction effect, the bottom of the well cannot reach the predetermined point, and the hazards of underground king-casting work, so as to reduce construction risks, The effect of saving non-drilling time and shortening the drilling cycle

Pending Publication Date: 2018-04-10
CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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AI Technical Summary

Problems solved by technology

[0010] The technical problem mainly solved by the present invention: Aiming at the problem that the wellbore deflection will cause great harm to the underground drilling work, making the bottom of the well unable to reach the predetermined point, affecting the wellbore ventilation, drainage and energy exploitation effects, and reducing the drilling efficiency , the present invention provides an automatic hydraulic deviation correction device for coal seam hydraulic drilling

Method used

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  • Automatic waterpower rectifying device for coal seam hydraulic drilling

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Embodiment Construction

[0023] An automatic hydraulic deviation correction device for coal seam hydraulic drilling, including a casing 1, a drill pipe buckle 2, a positioning sleeve 3, a drill pipe joint 4, a pressure sensor 5, an air cushion 6, a console 7, a hydraulic machine 8, a water storage tank 9, and a water injection inlet 10. The jet channel 11, the jet port 12, and the power cord 13 are characterized in that: a positioning sleeve 3 is installed on the top of the housing 1, and a drill pipe joint 4 is arranged inside the positioning sleeve 3, wrapped by a pressure sensor 5 and an air cushion 6, and the pressure sensor 5 Connect the console 7 with the air cushion 6, and the console 7 connects the hydraulic press 8. The positioning sleeve 3 is also provided with a jet port 12 , which communicates with the water storage tank 9 through the jet channel 11 . The console 7 can control the hydraulic machine 8 to make the water in the water storage tank 9 flow in and out. The console 7 can calculat...

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Abstract

The invention relates to an automatic hydraulic deviation correction device for coal seam hydraulic drilling, belonging to the technical field of drilling devices. The device of the present invention first fixes the drill pipe in the positioning sleeve through the drill pipe buckle, then turns on the power, opens the console, starts the motor to transmit power to the drill pipe joint to drive the drill pipe, and calculates the offset situation through the information transmitted by the pressure sensor , and control the air pressure in the air cushion to adjust the direction of the drill pipe, and at the same time control the hydraulic machine to make the water flow in the water storage tank inject the jet port from the jet channel, and form a high-speed jet flow in the opposite direction of the drill bit deflection, and perform directional and local damage to the rock, so that the The rock becomes relatively "softer", and the borehole will be drilled in this direction, that is, drilled in the opposite direction of the borehole's deviation, correcting the direction of deviation.

Description

technical field [0001] The invention relates to an automatic hydraulic deviation correction device for coal seam hydraulic drilling, belonging to the technical field of drilling devices. Background technique [0002] Wellbore deflection, also known as well deviation, will cause great harm to the underground drilling work, making it impossible to reach the predetermined point at the bottom of the wellbore, affecting the ventilation, drainage and energy recovery of the wellbore, reducing drilling efficiency and delaying the construction progress. Well deviation is due to the deviation of the drill bit, which causes the wellbore to deviate from the originally designed path, resulting in deviation. There are two main reasons for the skew of the drill bit. First, due to the geological environment, the change of the rock formation or the uneven hardness of the rock in the rock formation cause the unbalanced force on the drill bit, resulting in the skew of the drill bit. Second, th...

Claims

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Application Information

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IPC IPC(8): E21B7/10
CPCE21B7/10
Inventor 龙海燕王文新史玉玲
Owner CHANGZHOU SIYU ENVIRONMENTAL PROTECTION MATERIAL SCI & TECH
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