Pneumatic integrated foolproofing equipment

Abstract

The present invention discloses pneumatic integrated fool-proofing equipment, which relates to the technical field of drill rods, and comprises a drill rod, which extends along a first direction, and has two ends respectively, namely a first end and a second end, the first end being connected to a drill bit, and the second end being connected to a shell component, an accommodation space being arranged inside the shell component, a transmission shaft component being movably arranged in the accommodation space, an expander being arranged at one end of the transmission shaft component away from the drill rod, an airbag space being arranged between the transmission shaft component and the shell component, and the airbag space being filled with an inert gas; the drill rod is driven by a power device to perform drilling work, thereby driving the shell component to move, and further compressing the inert gas in the airbag space, and under the action of pressure, the inert gas always pushes the transmission shaft component to move, driving the expander to move, thereby achieving constant rock breaking, and solving the "stuck slip" phenomenon of the expander and the drill bit generated in the current underground construction process.

Description

Technical Field

[0001] The present disclosure relates to the technical field of drill pipes, and in particular to pneumatic integrated fool-proofing equipment. Background Art

[0002] With the development of the oil industry, more and more deep wells, ultra-deep wells, high-temperature and high-pressure wells, large-displacement horizontal wells, ultra-short curvature radius wells and other special wells are being developed, and the requirements for drilling tools are becoming higher and higher. Drilling is an important part of oil exploration and development. The main method currently used is rotary drilling, which transmits torque through rotating drill tools to drive the drill bit to rotate, break and cut rocks, drill underground, drill a wellbore of the designed depth, and obtain oil or natural gas. The role of the drill pipe is to transmit the drilling rig torque to the drill bit to achieve drilling, and is responsible for transmitting drilling fluid, and is lifted, lowered and rotated together with the drill bit.

[0003] The commonly used drill pipe at present is a downhole power drilling tool driven by the hydraulic energy of the drilling fluid. It has the function of increasing the rotation speed of the drill bit and thereby improving the drilling efficiency. It also has the function of directional, horizontal and other inclined well drilling. Moreover, it has low manufacturing and use costs and high safety and reliability. It has been widely used for many years.

[0004] When a conventional drill pipe drives the reamer to break rock, the elastic potential energy is stored and then released during the working state, so the drill bit is always in an intermittent drilling mode during the actual drilling process. Therefore, the reamer often "gets stuck" and slips. For this reason, we have proposed a pneumatic integrated anti-fool equipment. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide pneumatic integrated fool-proofing equipment.

[0006] The present invention provides a pneumatic integrated foolproofing device, comprising:

[0007] A drill rod, the drill rod extends along a first direction, and has two ends, respectively, a first end and a second end, the first end is connected to a drill bit for drilling a hole, the second end is coaxially connected to a housing component, and a receiving space is provided inside the housing component;

[0008] a transmission shaft assembly, the transmission shaft assembly extending along the first direction and movably arranged in the accommodation space, the transmission shaft assembly and the housing assembly being coaxially arranged, and a reamer being arranged at one end of the transmission shaft assembly away from the drill rod;

[0009] An airbag space, the airbag space being arranged between the housing assembly and the transmission shaft assembly, and the airbag space being filled with an inert gas;

[0010] The drill rod is driven to move by a power device, thereby driving the housing assembly to compress the inert gas, thereby continuously pushing the transmission shaft assembly and the reamer to move.

[0011] According to the technical solution provided by the present invention, the second end has a connecting boss, and the circumferential outer wall of the connecting boss is provided with a thread, the housing assembly includes a drill pipe conversion joint, and the two ends of the drill pipe conversion joint in the first direction are respectively a third end and a fourth end, and the third end is provided with a first accommodating groove, the first accommodating groove and the connecting boss are adapted, and the circumferential inner wall of the first accommodating groove is provided with a thread, and the connecting boss is screwed into the first accommodating groove.

[0012] According to the technical solution provided by the present invention, the fourth end is provided with a second accommodating groove, the housing assembly also includes a pneumatic housing, the pneumatic housing extends along the first direction, and a first accommodating cavity extending along the first direction is arranged inside the pneumatic housing, the first accommodating cavity has a fifth end and a sixth end at two ends respectively, and the fifth end and the sixth end are respectively connected to the two ends of the pneumatic housing, the circumferential inner wall of the fifth end is provided with a thread, and the second accommodating groove and the fifth end are screwed together.

[0013] According to the technical solution provided by the present invention, the housing assembly also includes a keyway moving sleeve joint, the circumferential outer wall of the keyway moving sleeve joint is provided with a thread, the circumferential inner wall of the sixth end is provided with a thread, the keyway moving sleeve joint and the sixth end are threadedly connected, and a second accommodating cavity is opened inside the keyway moving sleeve joint along the first direction.

[0014] According to the technical solution provided by the present invention, the transmission shaft assembly includes a load-force transmission shaft, which extends along the first direction, and the end thereof close to the drill rod is the eighth end, and the eighth end moves along the first direction to pass through the second accommodating cavity and the first accommodating cavity and extend into the second accommodating groove, and an anti-drop assembly is arranged in the accommodating space to prevent the load-force transmission shaft from falling.

[0015] According to the technical solution provided by the present invention, the load force transmission shaft is provided with a first anti-drop portion, the anti-drop assembly includes a pneumatic anti-drop clamping cap, which is coaxially sleeved on the load force transmission shaft, the end of the pneumatic anti-drop clamping cap away from the drill rod is provided with a second anti-drop portion adapted to the first anti-drop portion, the end of the keyway movable sleeve joint close to the drill rod is the seventh end, the seventh end has a first clamping portion, and the pneumatic anti-drop clamping cap is provided with a second clamping portion, and the first clamping portion and the second clamping portion are clamped together.

[0016] According to the technical solution provided by the present invention, a first sealing gasket is fixedly provided on the inner wall of the first accommodating chamber, and a first sealing gasket is movably mounted on the load force transmission shaft and is located on the side of the pneumatic anti-drop nut close to the drill rod, and sealing elements are provided on the circumferential inner wall and the circumferential outer wall of the first sealing gasket.

[0017] According to the technical solution provided by the present invention, a fixed sleeve is provided on the load force transmission shaft, which is located on the side of the first sealing gasket block close to the drill rod, and the load force transmission shaft is also fixedly provided with a second sealing gasket block, which is located on the side of the fixed block close to the drill rod, and the second sealing gasket block is slidingly connected to the first accommodating cavity, and the circumferential inner wall and the circumferential outer wall of the second sealing gasket block are both provided with sealing members, and a sealing mounting member is also threadedly provided on the load force transmission shaft, which is located on the side of the second sealing gasket block away from the fixed block.

[0018] According to the technical solution provided by the present invention, a plurality of sliding keys are evenly arranged on the circumferential outer wall of the load force transmission shaft, the sliding keys extend along the first direction, and a plurality of sliding key grooves are opened on the circumferential inner wall of the second accommodating cavity corresponding to the plurality of sliding keys, and the sliding keys are slidably arranged in the sliding key grooves.

[0019] According to the technical solution provided by the present invention, a third sealing gasket is arranged in the second accommodating groove to prevent the driving liquid from flowing into the airbag space and to bear the pressure on the load force transmission shaft.

[0020] In summary, the technical solution of the present invention specifically discloses a pneumatic integrated foolproofing device, including a drill rod, which extends along a first direction, and has two ends, respectively, a first end and a second end, the first end is connected to a drill bit, the second end is connected to a housing assembly, a housing space is provided inside the housing assembly, a transmission shaft assembly is movably provided in the housing space, a reamer is provided at one end of the transmission shaft assembly away from the drill rod, an airbag space is provided between the transmission shaft assembly and the housing assembly, and the airbag space is filled with an inert gas;

[0021] The drill rod is driven by a power device to carry out drilling work, thereby driving the outer shell assembly to move, and then compressing the inert gas in the airbag space. Under the action of pressure, the inert gas always pushes the drive shaft assembly to move, driving the reamer to move; when the reamer is "stuck", the reamer and the drive shaft assembly cannot move, while the drill rod and the outer shell assembly continue to move, compressing the inert gas in the airbag space again, and under the action of pressure, the inert gas immediately pushes the reamer forward, thereby achieving constant rock breaking and solving the "stuck" phenomenon of the reamer and drill bit generated in the current underground construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 Cross-sectional view of pneumatic integrated foolproofing equipment.

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0025] Figure 3 Exploded view of pneumatic integrated foolproofing equipment.

[0026] Numbers in the figure: 1. drill pipe; 2. drill pipe conversion joint; 3. pneumatic housing; 4. keyway movable sleeve joint; 5. load transmission shaft; 6. first anti-drop part; 7. pneumatic anti-drop clamp; 8. second anti-drop part; 9. second clamping part; 10. first clamping part; 11. first sealing gasket; 12. adjusting gasket; 13. fixing block; 14. second sealing gasket; 15. sealing mounting part; 16. sliding key; 17. sliding keyway; 18. third sealing gasket. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It should also be noted that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Please refer to Figures 1 to 3 As shown, the pneumatic integrated foolproofing equipment includes a drill rod 1, one end of which is connected to a drill bit, and the other end is connected to a housing assembly, a receiving space is provided inside the housing assembly, a transmission shaft assembly is movably provided in the receiving space, and a reamer is provided at the end away from the drill rod 1;

[0030] Specifically, the drill rod 1 extends along a first direction, and its two ends are respectively a first end and a second end. The drill bit is arranged at the first end, and the housing assembly is coaxially connected to the second end. The second end has a connecting convex head, and the circumferential outer wall of the connecting convex head is provided with a thread. The first direction is Figure 1 mid-horizontal direction;

[0031] Further, the housing assembly includes a drill pipe conversion joint 2, which extends along the first direction and is coaxial with the drill pipe 1. The two ends of the drill pipe conversion joint 2 in the first direction are respectively a third end and a fourth end. The third end is provided with a first receiving groove, the first receiving groove is adapted to the connecting convex head, and the circumferential inner wall of the first receiving groove is provided with a thread, and the connecting convex head is screwed in the first receiving groove; the fourth end is provided with a second receiving groove;

[0032] Further, the housing assembly further comprises a pneumatic housing 3, which extends in the first direction and is coaxial with the drill rod 1. A first accommodating cavity extending in the first direction is provided inside the pneumatic housing 3. The first accommodating cavity has a fifth end and a sixth end at two ends, and the fifth end and the sixth end are connected to the two ends of the pneumatic housing 3 respectively. A thread is provided on the circumferential inner wall of the fifth end, and the second accommodating groove is screwed to the fifth end.

[0033] Further, the housing assembly further comprises a keyway movable sleeve joint 4, which extends in the first direction, and a second accommodating cavity is opened in the interior thereof along the first direction, a thread is arranged on the circumferential outer wall of the keyway movable sleeve joint 4, a thread is arranged on the circumferential inner wall of the sixth end, and the keyway movable sleeve joint 4 and the sixth end are threadedly connected;

[0034] It should be noted that the first accommodating cavity and the second accommodating cavity together form an accommodating space.

[0035] The transmission shaft assembly includes a load force transmission shaft 5, which extends along the first direction and is coaxial with the pneumatic housing 3. The load force transmission shaft 5 is movably arranged in the accommodation space, and an anti-drop assembly is arranged in the accommodation space to prevent the load force transmission shaft 5 from falling off;

[0036] Specifically, the load force transmission shaft 5 has a first anti-drop portion 6, and the load force transmission shaft 5 has a first section and a second section that are fixedly connected in sequence in a first direction, wherein the diameter of the first section is greater than the diameter of the second section, and the first anti-drop portion 6 is formed at the junction of the first section and the second section;

[0037] Furthermore, the anti-drop assembly includes a pneumatic anti-drop nut 7, which is coaxially slidably sleeved on the load force transmission shaft 5, and the end of the pneumatic anti-drop nut 7 away from the drill pipe 1 has a second anti-drop part 8 adapted to the first anti-drop part 6;

[0038] Furthermore, the end of the keyway movable sleeve joint 4 close to the drill pipe 1 is the seventh end, and the seventh end has a first clamping portion 10, and the pneumatic anti-drop clamping cap 7 is provided with a second clamping portion 9, and the first clamping portion 10 and the second clamping portion 9 are clamped together;

[0039] Furthermore, a plurality of sliding keys 16 extending along the first direction are evenly arranged on the first section of the circumferential outer wall, and a plurality of sliding key slots 17 are opened on the circumferential inner wall of the second accommodating cavity corresponding to the plurality of sliding keys 16, and the sliding keys 16 are slidably arranged in the sliding key slots 17;

[0040] Thus, the relative sliding between the load force transmission shaft 5 and the keyway movable sleeve joint 4 is guided by the sliding cooperation between the sliding key 16 and the sliding keyway 17;

[0041] Furthermore, the end of the load force transmission shaft 5 close to the drill rod 1 is the eighth end, and the eighth end moves along the first direction to penetrate the second accommodation cavity and the first accommodation cavity and extend into the second accommodation groove;

[0042] It should be noted that the load force transmission shaft 5 also has a third section, which is located on the side of the first section away from the second section and is coaxially fixedly connected to the first section. Optionally, the load force transmission shaft 5 is an integrally formed structure; the diameter of the third section is greater than the diameter of the first section;

[0043] Furthermore, the end of the keyway movable sleeve joint 4 away from the drill pipe 1 is the ninth end, and the ninth end extends to the outside of the pneumatic housing 3, and can limit the load force transmission shaft 5;

[0044] Furthermore, a first sealing pad 11 is fixedly arranged on the inner wall of the first accommodating chamber and is located on the side of the pneumatic anti-dropping cap 7 close to the drill pipe 1. The first sealing pad 11 is slidably sleeved on the load force transmission shaft 5, and the circumferential inner wall and the circumferential outer wall of the first sealing pad 11 are both provided with sealing members;

[0045] Further, a fixed block 13 is fixedly sleeved on the load force transmission shaft 5, which is located close to the drill pipe 1 relative to the first sealing pad 11. The load force transmission shaft 5 is also fixedly sleeved with a second sealing pad 14, which is located on a side of the fixed block 13 close to the drill pipe 1, and the second sealing pad 14 is slidably connected to the first accommodating cavity, and the circumferential inner wall and the circumferential outer wall of the second sealing pad 14 are both provided with sealing members;

[0046] A sealing installation member 15 is also threadedly sleeved on the load transmission shaft 5 and is located on a side of the second sealing pad block 14 away from the fixing block 13 and is used to limit the position of the second sealing pad block 14;

[0047] It should be noted that an airbag space is formed between the first sealing gasket block 11 and the second sealing gasket block 14, and the airbag space is filled with an inert gas;

[0048] It should be noted that an adjustment gasket 12 is provided between the pneumatic anti-dropping cap 7 and the pneumatic housing 3;

[0049] It should be noted that the load transmission shaft 5, the drill pipe conversion joint 2 and the drill pipe 1 are all provided with a channel along the first direction for passing a driving fluid for driving the drill pipe 1 to rotate, and the second receiving groove of the drill pipe conversion joint 2 has a pipeline, which is coaxially arranged with the drill pipe conversion joint 2 for passing the driving fluid;

[0050] Furthermore, a third sealing pad 18 is provided in the second receiving groove, which is sleeved on the outer wall of the pipeline to prevent the driving liquid from flowing into the airbag space and to bear the pressure on the load force transmission shaft 5;

[0051] Optionally, the drive fluid is mud.

[0052] Working principle: When in use, the drill pipe 1 is driven to move by an external driving device, and the mud is input into the channel to realize the drilling work. The drill bit drives the drill pipe 1 to move, and the drill pipe 1 and the pneumatic housing 3 are screwed together, the pneumatic housing 3 and the keyway movable sleeve joint 4 are screwed together, the keyway movable sleeve joint 4 and the load force transmission shaft 5 are slidably connected, the keyway movable sleeve joint 4 and the pneumatic anti-dropping cap 7 are clamped together, and the first sealing pad 11 and the pneumatic housing 3 are fixedly connected. The anti-drop cap 7 and the first sealing pad 11 both move in the drilling direction. During this process, the first sealing pad 11 moves, squeezing the airbag space, resulting in compression of the inert gas. As a result, the inert gas pushes the fixed block 13 and the second sealing pad 14 to move. Due to the pressure, the inert gas continuously generates thrust on the fixed block 13 and the second sealing pad 14, driving the load force transmission shaft 5 to continuously move in the drilling direction, thereby driving the load force transmission shaft 5 to continuously move the reamer in the drilling direction.

[0053] When the reamer is in motion due to the sticking phenomenon, the load force transmission shaft 5 and the reamer cannot move, and at this time the drill pipe 1, the pneumatic housing 3, the keyway movable sleeve joint 4, the pneumatic anti-drop cap 7 and the first sealing gasket 11 all move in the drilling direction, thereby compressing the inert gas. Under the action of pressure, the inert gas immediately pushes the reamer forward, thereby achieving constant rock breaking, solving the "sticking" phenomenon of the reamer and drill bit generated in the current underground construction process, and improving the drilling work efficiency by 40-50%.

[0054] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. Pneumatic integrated foolproofing equipment, characterized in that: include: A drill rod (1), the drill rod (1) extending in a first direction, having two ends respectively comprising a first end and a second end, the first end being connected to a drill bit for drilling a hole, the second end being coaxially connected to a housing component, the housing component having an accommodation space arranged therein; a transmission shaft assembly, the transmission shaft assembly extending along the first direction and being movably arranged in the accommodation space, the transmission shaft assembly and the housing assembly being coaxially arranged, and a reamer being arranged at one end of the transmission shaft assembly away from the drill rod (1); An airbag space, the airbag space being arranged between the housing assembly and the transmission shaft assembly, and the airbag space being filled with an inert gas; The drill rod (1) is driven to move by a power device, thereby driving the housing assembly to compress the inert gas, thereby continuously pushing the transmission shaft assembly and the reamer to move.

2. The pneumatic integrated foolproofing equipment according to claim 1 is characterized in that: The second end has a connecting protrusion, and the circumferential outer wall of the connecting protrusion is provided with a thread, the housing assembly comprises a drill pipe conversion joint (2), the two ends of the drill pipe conversion joint (2) in the first direction are respectively a third end and a fourth end, the third end is provided with a first receiving groove, the first receiving groove is adapted to the connecting protrusion, and the circumferential inner wall of the first receiving groove is provided with a thread, and the connecting protrusion is screwed into the first receiving groove.

3. The pneumatic integrated foolproofing equipment according to claim 2 is characterized in that: The fourth end is provided with a second accommodating groove. The housing assembly further comprises a pneumatic housing (3). The pneumatic housing (3) extends along the first direction and is provided with a first accommodating cavity extending along the first direction. The first accommodating cavity has a fifth end and a sixth end at two ends respectively, and the fifth end and the sixth end are respectively connected to two ends of the pneumatic housing (3). The circumferential inner wall of the fifth end is provided with a thread, and the second accommodating groove and the fifth end are screw-connected.

4. The pneumatic integrated foolproofing equipment according to claim 3 is characterized in that: The housing component further comprises a keyway movable sleeve joint (4), the circumferential outer wall of the keyway movable sleeve joint (4) being provided with threads, the circumferential inner wall of the sixth end being provided with threads, the keyway movable sleeve joint (4) and the sixth end being threadedly connected, and a second accommodating cavity being provided inside the keyway movable sleeve joint (4) penetrating along the first direction.

5. The pneumatic integrated foolproofing equipment according to claim 4 is characterized in that: The transmission shaft assembly comprises a load transmission shaft (5), which extends along the first direction, and the end of the load transmission shaft (5) close to the drill rod (1) is an eighth end, and the eighth end moves along the first direction to pass through the second accommodating cavity and the first accommodating cavity and extend into the second accommodating groove, and an anti-drop assembly is arranged in the accommodating space to prevent the load transmission shaft (5) from falling.

6. The pneumatic integrated foolproofing equipment according to claim 5, characterized in that: The load force transmission shaft (5) is provided with a first anti-drop portion (6), the anti-drop assembly comprises a pneumatic anti-drop clamping cap (7) which is coaxially sleeved on the load force transmission shaft (5), the end of the pneumatic anti-drop clamping cap (7) away from the drill rod (1) is provided with a second anti-drop portion (8) adapted to the first anti-drop portion (6), the end of the keyway movable sleeve joint (4) close to the drill rod (1) is a seventh end, the seventh end is provided with a first clamping portion (10), the pneumatic anti-drop clamping cap (7) is provided with a second clamping portion (9), the first clamping portion (10) and the second clamping portion (9) are clamped with each other.

7. The pneumatic integrated foolproofing equipment according to claim 6 is characterized in that: A first sealing gasket (11) is fixedly arranged on the inner wall of the first accommodating chamber, and is movably sleeved on the load force transmission shaft (5) and located on a side of the pneumatic anti-dropping nut (7) close to the drill rod (1). The first sealing gasket (11) is provided with sealing elements on both the circumferential inner wall and the circumferential outer wall.

8. The pneumatic integrated foolproofing equipment according to claim 7, characterized in that: The load force transmission shaft (5) is fixedly sleeved with a fixed block (13), which is located on a side of the first sealing pad (11) close to the drill rod (1); the load force transmission shaft (5) is also fixedly sleeved with a second sealing pad (14), which is located on a side of the fixing block (13) close to the drill rod (1), and the second sealing pad (14) is slidably connected to the first accommodating cavity, and the circumferential inner wall and the circumferential outer wall of the second sealing pad (14) are both provided with sealing members; the load force transmission shaft (5) is also threadedly sleeved with a sealing mounting member (15), which is located on a side of the second sealing pad (14) away from the fixing block (13).

9. The pneumatic integrated foolproofing equipment according to claim 5, characterized in that: A plurality of sliding keys (16) are evenly arranged on the circumferential outer wall of the load force transmission shaft (5), and the sliding keys (16) extend along the first direction. A plurality of sliding key slots (17) are formed on the circumferential inner wall of the second accommodating cavity corresponding to the plurality of sliding keys (16), and the sliding keys (16) are slidably arranged in the sliding key slots (17).

10. The pneumatic integrated foolproofing equipment according to claim 5, characterized in that: A third sealing pad (18) is arranged in the second containing groove, which is used to prevent the driving liquid from flowing into the airbag space and to bear the pressure on the load force transmission shaft (5).

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