Drilling-expanding-cutting integrated gas extraction hole construction device

Abstract

The utility model provides a drilling-reaming-cutting integrated gas extraction hole construction device which comprises a water conservancy slotting pump truck and a kilometer directional drilling machine, one end of the kilometer directional drilling machine is connected with a high-sealing drill rod, one end of the high-sealing drill rod is connected with a drill bit, one end of the drill bit is provided with a reaming part, a first high-low pressure converter is arranged in the reaming part, and a second high-low pressure converter is arranged in the first high-low pressure converter. A reaming drill bit is arranged on the surface of the reaming part, the seam cutting part is connected to one end of the reaming part, a second high-low pressure converter is arranged in the seam cutting part, a sliding device is arranged at one end of the second high-low pressure converter, and a plurality of nozzles and an outer surface water outlet are formed in the surface of the seam cutting part. One side of the water conservancy slotting pump truck is connected with a water storage tank through a water inlet pipe and a water outlet pipe. According to the drilling-reaming-cutting integrated gas extraction hole construction device, high and low pressure conversion is achieved through the hydraulic slotting pump truck, drilling, reaming and slotting permeability increasing are completed, and long-distance gas extraction hole construction can be completed through the kilometer directional drilling machine.

Description

Technical Field

[0001] This utility model relates to the field of mining soft coal and rock strata, and in particular to a drilling-expansion-cutting integrated gas extraction hole construction device. Background Technology

[0002] Coal still dominates my country's energy mix, and gas, shocks, and other derivative disasters are the main factors restricting safe production in coal mines.

[0003] In recent years, the technology of replacing roadways with boreholes has become increasingly mature. Currently, there are two main construction methods for drilling along the bedding plane: conventional drilling and directional drilling. However, when using conventional drilling, whether pneumatic or hydraulic slag removal is used, the borehole trajectory deviation is about 2 meters within 60 meters, about 8 meters between 60 and 100 meters, and more than 15 meters above 100 meters. This will create large areas of "blank zones" and increase the cost of preventing gas outbursts. Directional long-distance drilling for drainage and fracturing plays a key role in current mine disaster control. Conventional drill bits often cause borehole collapse and drill bit pressure accidents during the construction of soft coal and rock strata and cross-strata drilling. The construction process is accompanied by problems such as large workload, difficulty in borehole formation, and low gas extraction concentration.

[0004] Currently, in the construction of long-distance drainage boreholes in soft coal and rock strata, multi-stage composite variable diameter drill bits are commonly used to avoid borehole collapse or deformation. During construction, the outer diameter of the multi-stage drill bits is adjusted by means of water pressure to achieve the purpose of local or whole-hole enlargement. In order to increase the gas extraction concentration, after the borehole enlargement is completed, the drill rod needs to be withdrawn as a whole, and then a high-sealing drill rod is replaced and the slotter is sent to the designated position to make slots to increase the permeability of the coal seam, thereby increasing the extraction concentration. In long-distance borehole construction, the drill rod needs to be replaced manually many times, resulting in high labor intensity for workers, low overall efficiency, and high economic costs.

[0005] Therefore, it is necessary to provide an integrated drilling-expansion-cutting gas extraction hole construction device to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides an integrated drilling-expansion-cutting gas extraction hole construction device, which solves the problem of having to manually replace the drill rod multiple times during long-distance drilling construction, resulting in high labor intensity for workers, low overall efficiency, and high economic costs.

[0007] To solve the above-mentioned technical problems, this utility model provides an integrated drilling-reaming-cutting gas extraction hole construction device, comprising:

[0008] A water conservancy slotting pump truck and a kilometer-long directional drilling rig, wherein one end of the kilometer-long directional drilling rig is connected to a high-seal drill rod, one end of the high-seal drill rod is connected to a drill bit, one end of the drill bit is provided with a hole-reaming section, the inside of the hole-reaming section is provided with a first high-low voltage converter, and the surface of the hole-reaming section is provided with a hole-reaming drill bit;

[0009] The sewing section is connected to one end of the enlarged hole section. A second high-low pressure converter is provided inside the sewing section. A sliding device is provided at one end of the second high-low pressure converter. Multiple nozzles and external water outlets are respectively provided on the surface of the sewing section and on the side opposite to the sliding device.

[0010] One side of the hydraulic slotting pump truck is connected to a water storage tank via an inlet pipe and an outlet pipe, and the other side of the hydraulic slotting pump truck is connected to the kilometer-long directional drilling rig via a high-pressure water delivery pipe.

[0011] Preferably, a wireless measurement-while-drilling instrument is connected to one side of the kilometer directional drilling rig via a connecting cable.

[0012] Preferably, the diameter of the drill bit is 94mm-120mm.

[0013] Preferably, one end of the cutting section is connected to a screw motor.

[0014] Preferably, a positioning component is provided between the cutting part and the screw motor. The positioning component includes an annular positioning block. One end of the cutting part is provided with an annular positioning groove that matches the annular positioning block. Sealing gaskets are adhered to both sides of the inner wall of the annular positioning groove.

[0015] Preferably, a connecting bracket is provided on one side of the screw motor surface.

[0016] Preferably, a fixing bolt is provided between the connecting frame, the sewing part and the annular positioning block, and a fixing hole adapted to the fixing bolt is provided between the annular positioning block and the sewing part.

[0017] Compared with related technologies, the integrated drilling-reaming-cutting gas extraction hole construction device provided by this utility model has the following beneficial effects:

[0018] This utility model provides an integrated drilling-expansion-cutting gas drainage hole construction device. It achieves high-low pressure switching via a hydraulic slotting pump truck, completing drilling, hole expansion, and slotting for increased permeability. Using a kilometer-long directional drilling rig, it can complete long-distance gas drainage hole construction. During on-site construction, it can be combined in pairs to achieve drilling-expansion and drilling-cutting processes according to different needs. It solves the problem of hole collapse when drilling through soft coal and rock strata or across layers, increases coal seam permeability, maximizes gas extraction rate and on-site construction efficiency, and reduces the cumbersome processes of separate hole expansion, slotting, and rod replacement. This greatly reduces the labor intensity of workers, saves costs, and improves economic efficiency. Different hole diameters can be expanded by adjusting the water pressure, and the outer surface of the slotting section uses a sliding cover design to achieve high-pressure slotting and low-pressure sealing. Attached Figure Description

[0019] Figure 1 A schematic diagram of the first embodiment of the integrated drilling-expansion-cutting gas extraction hole construction device provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows the structure of the drill-reamer-cut assembly.

[0021] Figure 3 A schematic diagram of the second embodiment of the integrated drilling-expansion-cutting gas extraction hole construction device provided by this utility model;

[0022] Figure 4 for Figure 3 An enlarged schematic diagram of part A is shown.

[0023] The diagram labels are as follows: 1. Drill bit; 2. First high-low pressure converter; 3. Reamer bit; 4. Nozzle; 5. Second high-low pressure converter; 6. Sliding device; 7. External water outlet; 8. Water storage tank; 9. Hydraulic slotting pump truck; 10. High-sealing drill rod; 11. Screw motor; 12. Inlet pipe; 13. High-pressure water supply pipe; 14. Outlet pipe; 15. Kilometer-long directional drilling rig; 16. Wireless measurement while drilling instrument; 17. Reamer section; 18. Slotting section;

[0024] 19. Positioning component; 191. Annular positioning block; 192. Annular positioning groove; 193. Sealing gasket;

[0025] 20. Connecting bracket; 21. Fixing bolt; 22. Fixing hole. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0027] First Embodiment

[0028] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the first embodiment of the integrated drilling-expansion-cutting gas extraction hole construction device provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the drill-reamer-cutter assembly. An integrated drill-reamer-cutter gas extraction hole construction device includes:

[0029] The hydraulic slotting pump truck 9 and the kilometer directional drilling rig 15 are provided. One end of the kilometer directional drilling rig 15 is connected to a high-sealing drill rod 10. One end of the high-sealing drill rod 10 is connected to a drill bit 1. One end of the drill bit 1 is provided with a hole-enlarging part 17. The inside of the hole-enlarging part 17 is provided with a first high-low pressure converter 2. The surface of the hole-enlarging part 1 is provided with a hole-enlarging drill bit 3.

[0030] The sewing section 18 is connected to one end of the enlarged hole section 17. A second high-low pressure converter 5 is provided inside the sewing section 18. A sliding device 6 is provided at one end of the second high-low pressure converter 5. A plurality of nozzles 4 and an external water outlet 7 are respectively provided on the surface of the sewing section 18 and on the side opposite to the sliding device 6.

[0031] One side of the hydraulic slotting pump truck 9 is connected to a water storage tank 8 via an inlet pipe 12 and an outlet pipe 14. The other side of the hydraulic slotting pump truck 9 is connected to the kilometer-long directional drilling rig 15 via a high-pressure water transmission pipe 13.

[0032] One side of the kilometer directional drilling rig 15 is connected to a wireless measurement-while-drilling instrument 16 via a connecting cable.

[0033] The diameter of the drill bit 1 is 94mm-120mm.

[0034] One end of the sewing section 18 is connected to a screw motor 11.

[0035] The power input end of the high-sealing drill rod 10 is connected to the kilometer directional drilling machine 15. The power input end of the cutting section 18 is connected to the high-sealing drill rod 10 of the kilometer directional drilling machine 15. The output end is connected to the input end of the hole reaming section 17 through a spiral thread. The output end of the hole reaming section 17 is connected to the bottom motor of the drill bit 1 through a thread. During drilling, the downhole water supply pipe is connected to the hydraulic slotting pump truck 9, and the water supply pressure is adjusted to about 2.0 MPa. The water flows through the high-seal drill rod 10, the slotting section 18, and the reaming section 17 into the drill bit 1 for slag removal and cooling during drilling. The diameter of the drill bit 1 is 94mm-120mm, and a suitable high-seal drill rod 10 and drill bit 1 can be selected according to the actual construction needs. When drilling reaches a soft coal and rock stratum where reaming is required, the water supply pressure is adjusted to 5.0 MPa. The high-pressure water flow pushes the first high-low pressure converter 2, sealing the front cavity of the reaming section. At the same time, under the pressure, the reaming drill bit 3 is opened to ream the hole. After reaming, the diameter of the borehole can be increased to 1 / 3 of the original drilling diameter. To increase the gas extraction concentration, the water pressure is increased to over 10.0 MPa by a high-pressure water pump station. The high-pressure water pushes the second high-low pressure converter 5 to seal the front cavity of the cutting section 18, and at the same time drives the sliding device 6 to move forward. The inner and outer jet holes of the cutting section 18 are aligned, and the high-pressure water jet is ejected to complete the cutting and penetration enhancement operation. The cutting depth can be adjusted from 300 mm to 1000 mm by adjusting the pressure. After the cutting is completed, the water pressure is reduced and the outer sliding cover of the cutting section is closed to seal the jet hole, ensuring that low-pressure water enters the drill bit 1 and preventing low-pressure water from being lost along the jet hole. This cycle of operation can realize integrated drilling-expansion-cutting construction. After the hydraulic cutting is completed, the directional hole is connected to the extraction system to carry out gas extraction.

[0036] To achieve automatic control, this equipment also includes a wireless measurement system and a wireless transmission module. The kilometer-long directional drilling rig 15, the hydraulic slotting pump truck 9, the reaming drill bit 3, the wireless drilling measurement instrument 16, the bottom hole motor 11, and the slotting sliding device 6 all transmit data to the wireless measurement system 17 through the wireless transmission module.

[0037] The wireless measurement system includes a data acquisition unit, a data processing unit, a data storage unit, and a control unit. The data acquisition unit transmits data with the wireless measurement-while-drilling instrument 16 via a wireless transmission module, receiving borehole depth detection data acquired by the wireless measurement-while-drilling instrument 16. The data processing unit receives the borehole depth detection data sent by the data acquisition unit and processes the borehole depth detection data. The data storage unit receives the borehole depth detection data acquired by the data acquisition unit and saves it. The control unit receives the processed borehole depth detection data from the data processing unit, generates control commands based on the processed borehole depth detection data, and sends the control commands via the wireless transmission module to the reaming drill bit 3, the bottom hole motor 11, the kilometer directional drilling rig 15, the slotting sliding device 6, and the hydraulic perforation pump truck 2.

[0038] Compared with related technologies, the integrated drilling-reaming-cutting gas extraction hole construction device provided by this utility model has the following beneficial effects:

[0039] This utility model provides an integrated drilling-expansion-cutting gas drainage hole construction device. It achieves high-low pressure conversion via a hydraulic slotting pump truck 9, completing drilling, hole expansion, and slotting for increased permeability. A kilometer-long directional drilling rig 15 can be used to construct long-distance gas drainage holes. During on-site construction, drilling-expansion and drilling-cutting processes can be implemented in pairs according to different needs. This solves the problem of hole collapse when drilling through soft coal and rock strata or across layers, increases coal seam permeability, maximizes gas extraction rate and on-site construction efficiency, and reduces the cumbersome processes of separate hole expansion, slotting, and rod replacement. It greatly reduces the labor intensity of workers, saves costs, and improves economic efficiency. Different hole diameters can be expanded by adjusting the water pressure, and the outer surface of the slotting section can achieve high-pressure slotting and low-pressure sealing through a sliding cover design.

[0040] Second embodiment

[0041] Please refer to Figure 3 and Figure 4 Based on the integrated drilling-expansion-cutting gas extraction hole construction device provided in the first embodiment of this application, the second embodiment of this application proposes another integrated drilling-expansion-cutting gas extraction hole construction device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0042] Specifically, the second embodiment of this application provides a drilling-expansion-cutting integrated gas extraction hole construction device, which differs in that a positioning component 19 is provided between the cutting part 18 and the screw motor 11. The positioning component 19 includes an annular positioning block 191. One end of the cutting part 18 is provided with an annular positioning groove 192 that is adapted to the annular positioning block 191. Both sides of the inner wall of the annular positioning groove 192 are bonded with sealing gaskets 193.

[0043] The use of sealing gasket 193 can play a role in compression positioning when the annular positioning block 191 and the annular positioning groove 192 are spliced ​​together.

[0044] A connecting bracket 20 is provided on one side of the surface of the screw motor 11.

[0045] A fixing bolt 21 is provided between the connecting frame 20, the sewing part 18 and the annular positioning block 191, and a fixing hole 22 adapted to the fixing bolt 21 is provided between the annular positioning block 191 and the sewing part 18.

[0046] One end of the annular positioning block 191 is connected to one end of the screw motor 11. The use of the annular positioning block 191 and the annular positioning groove 192 facilitates positioning when connecting the screw motor 11 and the sewing part 18. The use of the connecting bracket 20 facilitates the pulling and fixing of the screw motor 11 and the sewing part 18 by means of the fixing bolt 21.

[0047] The working principle of the integrated drilling-reaming-cutting gas extraction hole construction device provided by this utility model is as follows:

[0048] When using the screw motor 11 and the sewing part 18, first remove the fixing bolt 21 from the fixing hole 22. After the fixing bolt 21 is removed, pull the screw motor 11 to separate the annular positioning block 191 from the annular positioning groove 192 opened at one end of the sewing part 18.

[0049] Compared with related technologies, the integrated drilling-reaming-cutting gas extraction hole construction device provided by this utility model has the following beneficial effects:

[0050] This utility model provides an integrated drilling-expansion-cutting gas extraction hole construction device. A positioning component 19, a connecting frame 20, and a fixing bolt 21 are set between the cutting part 18 and the screw motor 11 for coordinated operation. This allows for quick disassembly in case of a malfunction in the screw motor 11, and also increases the stability during use.

[0051] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A drilling-reaming-cutting integrated gas extraction hole construction device, characterized in that, include: A water conservancy slotting pump truck and a kilometer-long directional drilling rig, wherein one end of the kilometer-long directional drilling rig is connected to a high-seal drill rod, one end of the high-seal drill rod is connected to a drill bit, one end of the drill bit is provided with a hole-reaming section, the inside of the hole-reaming section is provided with a first high-low voltage converter, and the surface of the hole-reaming section is provided with a hole-reaming drill bit; The sewing section is connected to one end of the enlarged hole section. A second high-low pressure converter is provided inside the sewing section. A sliding device is provided at one end of the second high-low pressure converter. Multiple nozzles and external water outlets are respectively provided on the surface of the sewing section and on the side opposite to the sliding device. One side of the hydraulic slotting pump truck is connected to a water storage tank via an inlet pipe and an outlet pipe, and the other side of the hydraulic slotting pump truck is connected to the kilometer-long directional drilling rig via a high-pressure water delivery pipe.

2. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 1, characterized in that, One side of the kilometer-long directional drilling rig is connected to a wireless measurement-while-drilling instrument via a connecting cable.

3. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 1, characterized in that, The diameter of the drill bit is 94mm-120mm.

4. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 1, characterized in that, One end of the sewing section is connected to a screw motor.

5. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 4, characterized in that, A positioning assembly is provided between the cutting section and the screw motor. The positioning assembly includes an annular positioning block. One end of the cutting section has an annular positioning groove that matches the annular positioning block. Sealing gaskets are adhered to both sides of the inner wall of the annular positioning groove.

6. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 5, characterized in that, A connecting bracket is provided on one side of the surface of the screw motor.

7. The integrated drilling-reaming-cutting gas extraction hole construction device according to claim 6, characterized in that, A fixing bolt is provided between the connecting frame, the sewing part and the annular positioning block, and a fixing hole adapted to the fixing bolt is opened between the annular positioning block and the sewing part.

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