Flexible plastic quick grouting hole sealing device and method
A sealing device and a flexible and plastic technology, which is applied to the valve device of wellbore/well, earth-moving drilling, sealing/isolation, etc. The device design is flexible to change, overcomes repeated pipe connections, and simplifies the effect of the intubation process
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[0036] Taking the pressure relief and sealing operation of water-filled pressure blasting in coal seam drilling as an example, the present invention will be further described in conjunction with the accompanying drawings:
[0037] Such as Figure 1-7 As shown, it is assumed that the depth of the coal seam pre-blasting pressure relief borehole 1 is 25m, and the diameter of the borehole 1 is 100mm. In view of the high utilization rate of explosive explosion energy under the condition of water-filled pressure blasting in coal and rock holes, the possibility of punching holes by the sealing material is relatively high, so the length of the drilling sealing section 2 is designed to be 15m. Select the flexible plastic resin pipe as the grouting pipe 3, cut a section every 18m, and carry out the seaming operation according to the designed pipe seam 4 parameters. After the slotting is completed, the processed flexible plastic grouting pipe is coiled and brought downhole.
[0038] In...
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