Down-hole drilling direction ruler and fast orienting method for hole drilling

A technology of azimuth and drill pipe, applied in earthwork drilling, wellbore/well components, measurement, etc., can solve the problems of cumbersome, inconvenient operation, large error of compass setting-out method, etc., and achieve the reduction of waste holes, convenient operation and high precision high effect

Active Publication Date: 2008-12-10
HUAINAN MINING IND GRP
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AI Technical Summary

Problems solved by technology

For a long time, geological compass, theodolite and calculation methods have been used in downhole drilling orientation and drilling acceptance. Due to the influence of roadway metal support materials and drilling

Method used

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  • Down-hole drilling direction ruler and fast orienting method for hole drilling
  • Down-hole drilling direction ruler and fast orienting method for hole drilling

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Experimental program
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Embodiment Construction

[0017] Drilling azimuth ruler production: Use 3-5mm thick transparent plexiglass to make a right-angled triangle ruler with a right-angled side length of 40-50 cm, use computer CAD to draw, divide the 90-degree angle into 90 angle units on average, and paste the printed drawing on the ready-made On the isosceles right-angled square, mark the scale on the hypotenuse of the right-angled square.

[0018] Quick orientation of downhole drilling: Before drilling, draw the opening position on the front section of the drilling site according to the design, and use the center line 5 of the constructed roadway to set the hole opening position at the front or side of the roadway 1 to 3 meters away from the drilling site. Before or after the drilling rig), set a group of reference lines 6 perpendicular to the center line of the roadway on the horizontal projection plane. , connect the drill pipe 3, align the drill bit with the opening position, adjust the height of the reference line 6 to...

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Abstract

The invention relates to an underground hole drilling location ruler and a quick orientation method for hole drilling, which is characterized in that a right-angle transparent triangular rule; one right-angle side of the triangular rule is 0 degree, and the other right-angle side is 90 degrees; the sloping side of the triangular rule is provided with scale from 0 degree to 90 degrees; in the quick orientation method for hole drilling, a set of datum lines which are vertical to the middle line of a lane on a horizontal projection plane are arranged in the lane or a roadway wall drilling field; the height of the datum lines is regulated, so that the lines intersect with a drill pipe at an intersection point on the same horizontal plane; the right-angle top point of the hole drilling location ruler is coincident with the intersection point: one right-angle side leans to the drill pipe, and the angles formed between the other right-angle side and the datum lines are the relative location angles for hole drilling. The invention is applicable in quick orientation for underground coal mine hole drilling and drill hole acceptance; the underground hole drilling location ruler is simple to be manufactured, with convenient operation in quick orientation for hole drilling and the orientation error less than 0.5 degree.

Description

technical field [0001] The invention relates to a downhole drilling orientation method in coal mine underground operations. Background technique [0002] Gas drainage is one of the important technical measures for the comprehensive control of coal mine gas, especially in low-permeability coal seam high-gas mines and coal and gas outburst mines, when using long holes along the bedding and through-bedding holes to drain gas, a drilling site More than one hundred drill holes are often arranged. For a long time, geological compass, theodolite and calculation methods have been used in downhole drilling orientation and drilling acceptance. Due to the influence of roadway metal support materials and drilling rigs, the error of compass setting out method is relatively large; A large number of calculations and measurement setting-out work are carried out in the well, which is cumbersome and inconvenient to operate. Contents of the invention [0003] The present invention aims at ...

Claims

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Application Information

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IPC IPC(8): E21B47/022
Inventor 张有胜周占魁余熠刘安兵刘宏进朱昌淮
Owner HUAINAN MINING IND GRP
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