Drilling hole inside directional dissevering method
A technology of internal orientation and drilling axis, which is applied in earthwork drilling, wellbore/well components, gas discharge, etc., and can solve the problem of increased permeability of coal walls, roof and floor that cannot be sealed and drained, and coal seam water injection area Large and other problems, to achieve the effect of not destroying the sealing effect, the effect is outstanding, and the effect of promoting the amount of gas gushing out
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[0014] Now take the accompanying drawings as an example: extend the high-pressure pipeline (1) with the end cut hole (2) into the final hole position of the drill hole (5), then open the valve, and the high-pressure liquid (3) rushes to the drill hole ( 5) of the hole wall, and directional split to form cracks (4), control the rotation and movement of the high-pressure pipeline (1), and the end cut hole (2) also rotates and moves together, thereby realizing the method of directional splitting inside the borehole.
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