Layer-penetrating drilling and water-returning hole washing device

Abstract

The utility model relates to a layer-penetrating drilling and water returning hole washing device which comprises a main body, a high-pressure water returning device is arranged outside the main body, the high-pressure water returning device comprises a flange, the flange is fixedly installed on the outer surface of the main body, a screw thread is arranged inside the main body, a drill rod pup joint is arranged at the bottom of the screw thread, and the drill rod pup joint is connected with the main body. A water injection bag is fixedly mounted in the main body, and a water injection pipe body is fixedly mounted at the bottom of the water injection bag. During drilling construction, the flange of the device is connected with the casing pipe of the blowout preventer, and then the high-pressure water return device is arranged in a matched mode, so that water flows into the drill rod body from the inner wall of the drill rod body during drilling and washing; the drill rod is driven to drive detained cement paste, two coal, one coal and water to flow out from the interior of the drill rod body and coal slime deposited on the lower portion of a drilling through hole to flow out from the interior of the drill rod body, the purpose of even hole washing is achieved, and therefore the purpose of conveniently cleaning and washing coal slime impurities in the drill rod is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a layer drilling water returning and hole washing device technical field, specifically is a layer drilling water returning and hole washing device. BACKGROUND

[0002] Gas control drilling construction is a key technical measure for gas hazards in underground engineering such as coal mines, which forms a gas extraction or discharge channel by drilling into coal seams or rock layers with professional equipment. The construction needs to design hole position, depth and angle parameters according to geological conditions, use directional drilling and hydraulic punching to improve efficiency, and strictly monitor drilling trajectory and gas dynamics to ensure construction safety and effectively reduce gas concentration, providing important protection for mine safety production.

[0003] During hydraulic punching, the general water outlet is at the drill bit. After layer hydraulic punching, the coal slurry retained in the hole wall affects the next step of downhole sealing pipe operation, especially the collapse of the upper coal body in the punching area, which makes it difficult for the hole sealing screen pipe to reach the bottom of the hole. It is necessary to continuously flush the hole wall. The drilling is affected by the weight of water, and only during the rotation of the drill bit can the coal body above the drilling be flushed. Repeated hole sweeping affects the drilling efficiency. Therefore, a layer drilling water returning and hole washing device is proposed. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a layer drilling water returning and hole washing device, which has the advantages of facilitating the cleaning and flushing of the internal coal slurry impurities of the drill rod, and solves the problem of optimizing the structure of the existing device.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a layer drilling water returning and hole washing device, comprising a main body, a high-pressure water returning device is arranged outside the main body, and a drill rod body is arranged inside the main body.

[0006] The high-pressure water returning device comprises a flange, the flange is fixedly installed on the outer surface of the main body, a screw thread is arranged inside the main body, a drill rod stub is arranged at the bottom of the screw thread, a water injection bag is fixedly installed inside the main body, a water injection pipe body is fixedly installed at the bottom of the water injection bag, a pressure gauge is fixedly installed on the left side of the water injection pipe body, a valve is fixedly installed on the left side of the water injection pipe body, and a water injection pipe joint is fixedly installed on the right side of the main body.

[0007] Further, a blowout preventer sleeve is movably connected outside the main body, a drill hole through hole is formed in the inside of the blowout preventer sleeve, cement slurry is movably connected in the inside of the blowout preventer sleeve, and two coal is movably connected in the inside of the blowout preventer sleeve. A drill bit is fixedly installed at the end of the drill rod body.

[0008] Further, the number of the flanges is two, and the two flanges are respectively fixedly installed on the outer surfaces of the left and right ends of the main body.

[0009] Further, the bottom of the water injection pipe body penetrates the inner bottom wall of the main body and extends to the outside of the main body.

[0010] Further, the bottom of the water injection pipe body penetrates the inner bottom wall of the main body and extends to the outside of the main body.

[0011] Further, the left side of the drill rod body is movably connected with the outer surface of the thread.

[0012] Beneficial effects

[0013] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0014] The layer-penetrating drilling water returning and hole washing device is connected with the blowout preventer casing pipe through the flanges during the drilling construction of the gas control drilling, and then is matched with the setting of the high-pressure water returning device, so that the water flows into the drill rod body from the inner wall of the drill rod body during the drilling and hole washing, drives the cement slurry, the coal and the water to flow out from the inside of the drill rod body and the coal slurry deposited in the lower part of the drilling transparent hole, and achieves the purpose of uniform hole washing, thereby achieving the purpose of conveniently cleaning and flushing the coal slurry impurities in the drill rod. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a local three-dimensional structure schematic view of the present application;

[0016] Figure 2 It is a front structure schematic view of the present application;

[0017] Figure 3 It is a front sectional structure schematic view of the present application;

[0018] Figure 4 It is a high-pressure water returning device installation structure schematic view of the present application.

[0019] In the figure: 1, main body; 2, high-pressure water returning device; 201, flange; 202, thread; 203, drill rod stub; 204, water injection bag; 205, water injection pipe body; 206, pressure gauge; 207, valve; 208, water injection pipe joint; 3, drill rod body; 4, blowout preventer casing pipe; 5, drilling transparent hole; 6, cement slurry; 7, coal; 8, drill bit. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] Please refer to Figures 1-4 A through-hole drilling water returning and hole washing device, comprising a main body 1, a high-pressure water returning device 2 is arranged outside the main body 1, and a drill rod body 3 is arranged inside the main body 1.

[0022] The high-pressure water returning device 2 comprises a flange 201, the flange 201 is fixedly installed on the outer surface of the main body 1, a screw thread 202 is arranged inside the main body 1, a drill rod stub 203 is arranged at the bottom of the screw thread 202, a water injection bag 204 is fixedly installed inside the main body 1, a water injection pipe body 205 is fixedly installed at the bottom of the water injection bag 204, a pressure gauge 206 is fixedly installed at the left side of the water injection pipe body 205, a valve 207 is fixedly installed at the left side of the water injection pipe body 205, and a water injection pipe joint 208 is fixedly installed at the right side of the main body 1.

[0023] Further, a blowout preventer sleeve 4 is movably connected outside the main body 1, a drill hole through hole 5 is formed in the inside of the blowout preventer sleeve 4, a cement slurry 6 is movably connected inside the blowout preventer sleeve 4, a coal 7 is movably connected inside the blowout preventer sleeve 4, and a drill bit 8 is fixedly installed at the end of the drill rod body 3.

[0024] Specifically, as shown in the figure, Figure 4 During the gas control drilling construction, the flange 201 of the main body 1 is connected with the blowout preventer sleeve 4, after the drilling construction is completed, the drill rod body 3 and the water injection bag 204 at the tail are disassembled, the drill rod stub 203 is tightened, the water injection pipe body 205 of the water injection bag 204 is connected with the high-pressure water pipe, the valve 207 is opened to fill water in the water injection bag 204, when the value of the pressure gauge 206 reaches 4MPa, the valve 207 is closed, and the water filling work of the water injection bag 204 is completed.

[0025] Specifically, as shown in the figure, Figure 4 The water injection pipe joint 208 at the upper part of the main body 1 is connected with the high-pressure water pipe to fill water in the drill hole through hole 5, under the action of the high-pressure water, the hole wall of the drill hole through hole 5 is washed, and flows out from the inside of the drill bit 8 and the drill rod body 3, when the returned water in the drill rod body 3 gradually becomes clear, the hole washing work is completed.

[0026] Specifically, as shown in the figure, Figure 4As shown, for the soft coal seam in the west of Henan Province, after the water jetting of the through-hole drilling, the coal slurry in the hole cannot be normally discharged due to the influence of the drilling angle, the drilling channel is blocked, the sealing screen pipe cannot reach the bottom of the hole, and the drainage effect is affected. In order to solve these problems, the high-pressure water return device 2 is innovated, which can uniformly flush out the coal slurry accumulated in the collapsed hole area and the inner wall of the drilling through-hole 5, effectively ensure the pipe running rate, and solve the pipe sticking problem during the drilling pulling rod period.

[0027] In the implementation, the following steps are performed:

[0028] 1) First, the main body 1 is connected with the blowout preventer sleeve 4 through the flange 201;

[0029] 2) Then, after the construction is completed, the drill pipe body 3 and the water gauge at the tail are disassembled, and the drill pipe short connection 203 is tightened;

[0030] 3) Then, the water injection pipe body 205 is connected with the high-pressure water pipe outside, the valve 207 is opened to fill water into the water injection bag 204, and the pressure gauge 206 is observed, and then the valve 207 is closed;

[0031] 4) Finally, the water injection pipe joint 208 is connected with the high-pressure water pipe outside, and the drilling through-hole 5 is filled with water, so that the internal hole washing process is performed.

[0032] As described above, the through-hole drilling water return hole washing device, the flange 201 of the device is connected with the blowout preventer sleeve 4 during the gas control drilling construction, and then the high-pressure water return device 2 is set, so that when the drilling hole is washed, the water flows into the drill pipe body 3 from the inner wall of the drill pipe body 3, drives the accumulated cement slurry 6, coal 7 and water to flow out from the inside of the drill pipe body 3 and the lower part of the coal slurry accumulated in the drilling through-hole 5, achieves the purpose of uniform hole washing, and realizes the purpose of conveniently cleaning and flushing the coal slurry impurities in the drill pipe.

[0033] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a…" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water returning and hole washing device for a through-layer drilling, comprising a main body (1), characterized in that: The outer part of the main body (1) is provided with a high-pressure backwater device (2), and the inner part of the main body (1) is provided with a drill rod body (3); The high-pressure backwater device (2) comprises a flange (201), the outer surface of the main body (1) is fixedly provided with the flange (201), the inner part of the main body (1) is provided with a screw thread (202), the bottom of the screw thread (202) is provided with a drill rod stub (203), the inner part of the main body (1) is fixedly provided with a water injection bag (204), the bottom of the water injection bag (204) is fixedly provided with a water injection pipe body (205), the left side of the water injection pipe body (205) is fixedly provided with a pressure gauge (206), the left side of the water injection pipe body (205) is fixedly provided with a valve (207), and the right side of the main body (1) is fixedly provided with a water injection pipe joint (208).

2. The device according to claim 1, characterized in that: The outer part of the main body (1) is movably connected with a blowout prevention device sleeve (4), the inner part of the blowout prevention device sleeve (4) is provided with a drill hole (5), the inner part of the blowout prevention device sleeve (4) is movably connected with a cement slurry (6), the inner part of the blowout prevention device sleeve (4) is movably connected with a coal (7), and the end of the drill rod body (3) is fixedly provided with a drill bit (8).

3. The device according to claim 1, characterized in that: The number of the flanges (201) is two, and the two flanges (201) are fixedly installed on the outer surfaces of the left and right ends of the main body (1).

4. The device according to claim 1, wherein: The bottom of the drill rod stub (203) penetrates the inner bottom wall of the main body (1) and extends to the outside of the main body (1).

5. The device according to claim 1, characterized in that: The bottom of the water injection pipe body (205) penetrates the inner bottom wall of the main body (1) and extends to the outside of the main body (1).

6. The device of claim 1, wherein: The left side of the drill rod body (3) is movably connected with the outer surface of the screw thread (202).

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