Dynamic pushing type high-temperature-resistant full-rotation guiding drilling tool

Abstract

The invention relates to the technical field of drilling tools, and discloses a dynamic pushing type high-temperature-resistant full-rotation guiding drilling tool which comprises a drill bit, a guide rod, a hydraulic cylinder and a hydraulic cylinder. A motor, a hydraulic pump and a plunger are installed in the guide rod, the guide plate is connected with the plunger, and the motor is used for driving the hydraulic pump to operate to eject the plunger and the guide plate out so that the guide plate can make contact with the well wall; the guard plate is used for replacing the guide plate to make contact with the well wall, a first clamping strip is arranged on the face, close to the guide plate, of the guard plate, and a second clamping strip is arranged on the face, close to the guard plate, of the guide plate. The guide plate is replaced by the protective plate to be in contact and friction with the well wall, the first clamping strip and the second clamping strip are used for achieving embedded connection, when the protective plate needs to be replaced due to serious abrasion, the protective plate can be easily taken down from the guide plate only by disassembling the second bolt, the guide plate does not need to be wholly disassembled, the maintenance process is effectively simplified, complex disassembling and assembling operation is avoided, and the service life of the protective plate is prolonged. And the replacement efficiency and the operation efficiency are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling tools, in particular to a dynamic push-type high-temperature resistant full-rotation guide drilling tool. Background Art

[0002] In modern oil and gas resource development, with the continuous in-depth exploration and development of resources, many oil and gas wells are located in complex geological structures or high-temperature deep well environments. In order to achieve efficient development of the target reservoir, drilling tools are required to accurately control the drill bit trajectory downhole, especially in horizontal wells, large-reach wells and multi-branch wells.

[0003] Traditional directional drilling tools are difficult to meet modern drilling needs due to their insufficient directional accuracy and poor ability to adapt to complex geology. The dynamic push-to-pull high-temperature resistant full-rotation directional drilling tool is a high-end downhole equipment specially used for oil and gas well drilling. Its core function is to achieve precise well trajectory control under high temperature, high pressure and complex geological conditions. The tool drives the drill bit to rotate through the guide rod, and at the same time drives the guide plate to extend through the hydraulic system, contacting the well wall to adjust the drilling direction, thereby ensuring that the drill bit moves on the target trajectory. It has the characteristics of high temperature resistance, dynamic adjustment and high precision, and is an indispensable technical equipment in the drilling of complex oil and gas wells.

[0004] However, in the prior art, due to the long-term contact between the guide plate and the well wall, severe friction occurs, which leads to severe wear of the guide plate. To ensure normal operation, the replacement of the guide plate becomes a necessary operation. However, the guide plate is usually tightly connected to the hydraulic push arm or mechanical structure, and mostly adopts an integrated fixed design. This design makes it impossible to disassemble the guide plate independently, and the guide assembly needs to be replaced as a whole after wear. This not only significantly increases maintenance costs, but also leads to extended downtime, which seriously affects the operation efficiency. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a dynamic push-type high-temperature resistant fully rotary directional drilling tool, which solves the problem in the prior art that the guide plate cannot be disassembled independently and the guide assembly needs to be replaced as a whole, which in turn leads to increased maintenance costs, prolonged downtime, and seriously affects operating efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dynamic push-type high temperature resistant full-rotation steerable drilling tool, comprising:

[0007] A drill bit, the top of which is connected with a guide rod, which is used to drive the drill bit to rotate;

[0008] A guide plate is movably connected to the outer wall of the guide rod. A motor, a hydraulic pump and a plunger are installed inside the guide rod. The guide plate is connected to the plunger. The motor is used to drive the hydraulic pump to push the plunger and the guide plate out so that the guide plate contacts the well wall.

[0009] A guard plate is connected to the outer wall of the guide plate by two bolts and is used to replace the guide plate in contact with the well wall. A first clamping strip is provided on one side of the guard plate close to the guide plate, and a second clamping strip is provided on one side of the guide plate close to the guard plate. The first clamping strip is embedded in the guide plate, and the second clamping strip is embedded in the guard plate.

[0010] Preferably, a second card slot is provided on one side of the guard plate, and the second card strip is located in the second card slot.

[0011] Preferably, a card slot one is formed on one side of the guide plate, and the card strip one is located in the card slot one.

[0012] Preferably, the cross-sections of the second card slot, the first card slot, the second card strip and the first card strip are all set to be T-shaped.

[0013] Preferably, a second installation groove is provided on one side of the guard plate, and the end of the second bolt is threadedly connected in the second installation groove.

[0014] Preferably, a support is installed on the outer wall of the guide rod, a rotating shaft is connected to one side of the guide plate, and the rotating shaft passes through the support.

[0015] Preferably, the guide plate is fixedly connected to a lug plate on one side away from the rotating shaft and close to the guide rod, the lug plate is movably connected to a connecting plate on one side, the connecting plate is fixedly connected to a sleeve on one side, and the plunger is installed in the sleeve by a bolt.

[0016] Preferably, a mounting groove 1 is provided inside the sleeve, and the end of the bolt 1 is threadedly connected in the mounting groove 1.

[0017] Preferably, one ear plate is provided, two connecting plates are provided, and the ear plate is located between the two connecting plates. An insertion rod is provided in the middle of the ear plate, nuts are threadedly connected on both sides of the outer wall of the insertion rod, and the proximal sides of the nuts on both sides are in contact with the distal sides of the two connecting plates respectively.

[0018] Preferably, a through hole is opened in the middle of the two connecting plates and the ear plate, the insertion rod is located in the through hole, and the width of the through hole is greater than the diameter of the insertion rod.

[0019] The present invention provides a dynamic push-type high temperature resistant fully rotary steerable drilling tool. It has the following beneficial effects:

[0020] 1. The present invention uses a guard plate instead of a guide plate to contact and rub against the well wall, and uses the first and second clamping strips to achieve mutual interlocking connection. When the guard plate needs to be replaced due to severe wear, the guard plate can be easily removed from the guide plate by removing the second bolt, without the need to disassemble the guide plate as a whole, which effectively simplifies the maintenance process, avoids complicated disassembly and assembly operations, and significantly improves replacement efficiency and operating efficiency.

[0021] 2. The present invention removes the nut and then pulls the rod out of the ear plate, so that the guide plate can rotate freely around the rotating shaft, thereby fully opening the guide plate and keeping it away from the guide rod, thereby effectively increasing the operating space of the staff's hands and significantly improving the convenience and efficiency of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 This is a partial structural diagram of the guard plate of the present invention;

[0024] Figure 3 This is a structural breakdown diagram of the rotating shaft of the present invention;

[0025] Figure 4 A top view of a guard plate of the present invention;

[0026] Figure 5 for Figure 3 A top view of the guide plate in FIG.

[0027] Figure 6 for Figure 3 A top view of the guide plate in FIG.

[0028] Figure 7 This is a disassembled diagram of the sleeve structure of the present invention;

[0029] Figure 8 for Figure 7 Front cross-sectional view of the middle sleeve.

[0030] Among them, 1. drill bit; 2. guide rod; 3. guide plate; 4. sleeve; 5. connecting plate; 6. plug rod; 7. nut; 8. ear plate; 9. support; 10. rotating shaft; 11. bolt one; 12. mounting slot one; 13. through hole; 14. bolt two; 15. guard plate; 16. clamping strip one; 17. clamping slot one; 18. clamping strip two; 19. clamping slot two; 20. mounting slot two. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to better understand the present invention, the above contents are described in detail below in conjunction with specific embodiments.

[0033] Please see attached Figure 1-Figure 7 The embodiment of the present invention provides a dynamic push-type high-temperature resistant full-rotation guide drilling tool, including: a drill bit 1, a guide rod 2 is connected to the top of the drill bit 1, which is used to drive the drill bit 1 to rotate; a guide plate 3, which is movably connected to the outer wall of the guide rod 2, a motor, a hydraulic pump and a plunger are installed inside the guide rod 2, the guide plate 3 is connected to the plunger, the motor is used to drive the hydraulic pump to operate to push the plunger and the guide plate 3 out so that the guide plate 3 contacts the well wall; a guard plate 15, which is connected to the outer wall of the guide plate 3 by a bolt 2 14, and is used to contact the well wall instead of the guide plate 3, and a clamping strip 16 is provided on the side of the guard plate 15 close to the guide plate 3, and a clamping strip 2 18 is provided on the side of the guide plate 3 close to the guard plate 15, and the clamping strip 16 is embedded in the guide plate 3, and the clamping strip 2 18 is embedded in the guard plate 15.

[0034] In the present invention, the drill bit 1 is connected to the guide rod 2, and the guide rod 2 transmits the rotational power to drive the drill bit 1 to rotate, so that the drill bit 1 cuts and advances in the formation, and the guide rod 2 is integrated with a motor and a hydraulic pump. The motor provides power for the hydraulic pump, drives the hydraulic pump to pressurize the hydraulic oil and deliver it to the plunger cavity. The hydraulic oil forms sufficient pressure in the plunger cavity to push the plunger out, thereby driving the guide plate 3 to be ejected and contact the well wall to achieve the guiding function. The ejection force of the guide plate 3 can be accurately controlled by the pressure regulation of the hydraulic pump, so that the guide plate 3 can flexibly adjust the trajectory direction of the drill bit 1 in a complex geological environment, thereby achieving precise guided drilling, and the guard plate 15 is fixed to the outer wall of the guide plate 3 by bolts 14, and is used It replaces the guide plate 3 in direct contact with the well wall, and bears the friction and pressure of the well wall, thereby effectively reducing the wear of the guide plate 3 body and extending the service life of the guide plate 3. The guard plate 15 and the guide plate 3 are interlocked through the clamping strip 16 and the clamping strip 2 18, so that the guard plate 15 can be firmly embedded in the guide plate 3. When the guard plate 15 is worn due to long-term contact with the well wall, it is only necessary to loosen the bolt 2 14 that fixes the guard plate 15, and then the guard plate 15 can be easily removed from the guide plate 3. After replacing the new guard plate 15, the bolt 2 14 can be installed, thereby realizing the rapid replacement of the guard plate 15, which not only avoids the tedious steps of disassembling the guide plate 3 as a whole, but also greatly reduces the maintenance time and improves the working efficiency.

[0035] Please see attached Figure 2-Figure 6 , a second card slot 19 is provided on one side of the guard plate 15, and a second card strip 18 is located in the second card slot 19. A card slot 17 is provided on one side of the guide plate 3, and a card strip 16 is located in the first card slot 17. The cross-sections of the second card slot 19, the first card slot 17, the second card strip 18 and the first card strip 16 are all set to be T-shaped. A second installation slot 20 is provided on one side of the guard plate 15, and the end of the second bolt 14 is threadedly connected in the second installation slot 20

[0036] In the present invention, the cross-sections of the first slot 17, the second slot 19, the first strip 16 and the second strip 18 are all designed to be T-shaped, thereby providing a larger mating contact area and improving the strength and stability of the connection. The T-shaped structure can also effectively prevent the guard plate 15 from loosening or shifting in the high vibration and high impact environment underground, thereby ensuring the reliability of the guard plate 15 during operation. In addition, the T-shaped slot and the strip also simplify the installation and disassembly operations of the guard plate 15. When the guard plate 15 needs to be replaced, it is only necessary to loosen the second bolt 14 that fixes the guard plate 15, and the guard plate 15 can be slid along the strip and removed from the guide plate 3, thereby avoiding the complicated disassembly steps in the traditional fixing method and significantly improving the replacement efficiency of the guard plate 15.

[0037] Please see attached Figure 2-Figure 6 A support 9 is installed on the outer wall of the guide rod 2, and a rotating shaft 10 is connected to one side of the guide plate 3, and the rotating shaft 10 passes through the support 9.

[0038] By utilizing the support 9 , an installation space can be provided for the rotating shaft 10 , and the protection plate 15 , the guide plate 3 and the rotating shaft 10 can be rotatable.

[0039] Please see attached Figure 1-Figure 8 The guide plate 3 is fixedly connected with an ear plate 8 on one side away from the rotating shaft 10 and close to the guide rod 2, and a connecting plate 5 is movably connected to one side of the ear plate 8. A sleeve 4 is fixedly connected to one side of the connecting plate 5, and the plunger is installed in the sleeve 4 through a bolt 11. An installation groove 12 is provided inside the sleeve 4, and the end of the bolt 11 is threadedly connected in the installation groove 12.

[0040] In the present invention, the sleeve 4 can provide structural support for the installation and fixation of the plunger, and the plunger is installed in the sleeve 4 by means of a bolt 11, and the end of the bolt 11 is threadedly connected to a mounting groove 12 inside the sleeve 4, so that the connection between the plunger and the sleeve 4 is more secure, and maintenance and disassembly are also convenient. When the plunger needs to be replaced or maintained, it is only necessary to remove the bolt 11 to quickly remove the plunger from the sleeve 4, which greatly simplifies the maintenance operation process.

[0041] Please see attached Figure 1-Figure 8, one ear plate 8 is provided, two connecting plates 5 are provided, and the ear plate 8 is located between the two connecting plates 5, a plug rod 6 is provided in the middle of the ear plate 8, nuts 7 are threadedly connected to both sides of the outer wall of the plug rod 6, and the proximal sides of the nuts 7 on both sides are in contact with the distal sides of the two connecting plates 5. A through hole 13 is opened in the middle of the two connecting plates 5 and the ear plate 8, the plug rod 6 is located in the through hole 13, and the width of the through hole 13 is greater than the diameter of the plug rod 6.

[0042] In the present invention, one ear plate 8 is provided, two connecting plates 5 are provided, and the ear plate 8 is located between the two connecting plates 5, and an insertion rod 6 is provided in the middle of the ear plate 8, and the insertion rod 6 passes through the through holes 13 of the ear plate 8 and the two connecting plates 5, and nuts 7 are threadedly connected on both sides of the outer wall of the insertion rod 6, and the proximal sides of the nuts 7 are respectively in contact with the distal sides of the two connecting plates 5, and through the locking design of the double nuts 7, the insertion rod 6 can be firmly fixed between the connecting plate 5 and the ear plate 8, and also allows the structure to be quickly loosened or disassembled when adjustment is required, and the width of the through hole 13 is greater than the diameter of the insertion rod 6, therefore, not only the necessary space margin is provided for the installation of the insertion rod 6, but also a certain adjustment room is allowed after the insertion rod 6 is installed, so that the connecting plate 5 and the ear plate 8 can be flexibly moved within a certain range, so that they can effectively absorb external shocks or vibrations, and avoid component damage caused by stress concentration.

[0043] Working principle: When in use, the guide rod 2 first transmits the rotational power to drive the drill bit 1 to rotate and cut the bottom formation of the well. During this process, the motor starts and drives the hydraulic pump to work, pressurizes the hydraulic oil and delivers it to the plunger cavity. Then, the plunger is ejected under the action of the hydraulic oil pressure, pushing the guide plate 3 and the guard plate 15 to extend outward. After the guide plate 3 is pushed by the plunger, it will drive the guard plate 15 away from the guide rod 2 and contact the well wall. At this time, it will replace the guide plate 3 and the well wall to generate friction, and the contact force between the guard plate 15 and the well wall is transmitted back to the guide rod 2, forming a lateral force perpendicular to the forward direction of the drill bit 1. At this time, the direction of the drill bit 1 is changed by adjusting the push of the guide plate 3, and the precise control of the drilling trajectory is achieved through continuous adjustment. Finally, the hydraulic system can dynamically adjust the ejection force of the plunger and the angle of the guide plate 3 according to the real-time feedback from the well to adapt to geological changes and optimize the drilling trajectory. When the guard plate 15 is worn out, the drill bit 1 is moved outside the well, and then The driving motor drives the hydraulic pump to push the plunger out. At this time, the guard plate 15 and the guide plate 3 will move away from the guide plate 3. Then, the bolt 11 is removed to separate the plunger from the sleeve 4. Finally, the guide plate 3 and the guard plate 15 can be rotated along the rotating shaft 10. At this time, the angle between the guide plate 3 and the guard plate 15 and the guide rod 2 can be increased. Then, the bolt 2 14 is removed. Finally, the slide plate is squeezed to make it slide along the clamping strip 16 and the clamping strip 2 18, thereby separating the guard plate 15 and the guide plate 3. Then, the new slide plate can be installed on the guide plate 3. During installation, the clamping strip 16 is aligned with the clamping slot 17, and the clamping strip 2 18 is aligned with the clamping slot 2 19. Finally, the guard plate 15 is installed and the bolt 2 14 is reinstalled. At this time, the guide plate 3 can be reversed to re-sleeve the sleeve 4 on the plunger. Finally, the bolt 11 can be installed. The nut 7 and the bolt 11 can also be rotated. At this time, the plug rod 6 and the sleeve 4 can be removed from the device, and the sleeve 4 can also be replaced at this time.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamic push-type high temperature resistant fully rotary steerable drilling tool, characterized in that: include: A drill bit (1) having a guide rod (2) connected to the top thereof and used for driving the drill bit (1) to rotate; A guide plate (3) is movably connected to the outer wall of the guide rod (2), a motor, a hydraulic pump and a plunger are installed inside the guide rod (2), the guide plate (3) and the plunger are connected, and the motor is used to drive the hydraulic pump to push the plunger and the guide plate (3) out so that the guide plate (3) contacts the well wall; A guard plate (15) is connected to the outer wall of the guide plate (3) by means of a second bolt (14) and is used to replace the guide plate (3) in contact with the well wall. A first clamping strip (16) is provided on one side of the guard plate (15) close to the guide plate (3), and a second clamping strip (18) is provided on one side of the guide plate (3) close to the guard plate (15). The first clamping strip (16) is embedded in the guide plate (3), and the second clamping strip (18) is embedded in the guard plate (15).

2. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, characterized in that: A second clamping groove (19) is provided on one side of the guard plate (15), and the second clamping strip (18) is located in the second clamping groove (19).

3. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 2, characterized in that: A clamping groove (17) is formed on one side of the guide plate (3), and the clamping strip (16) is located in the clamping groove (17).

4. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 3, characterized in that: The cross-sections of the second clamping slot (19), the first clamping slot (17), the second clamping strip (18) and the first clamping strip (16) are all arranged to be T-shaped.

5. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, characterized in that: A second installation groove (20) is provided on one side of the guard plate (15), and the end of the second bolt (14) is threadedly connected in the second installation groove (20).

6. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, characterized in that: A support (9) is installed on the outer wall of the guide rod (2), and a rotating shaft (10) is connected to one side of the guide plate (3), and the rotating shaft (10) passes through the support (9).

7. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 6, characterized in that: The guide plate (3) is fixedly connected to a lug plate (8) on one side away from the rotating shaft (10) and close to the guide rod (2); one side of the lug plate (8) is movably connected to a connecting plate (5); one side of the connecting plate (5) is fixedly connected to a sleeve (4); and the plunger is installed in the sleeve (4) by means of a bolt (11).

8. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 7, characterized in that: The sleeve (4) is provided with a mounting groove (12) inside, and the end of the bolt (11) is threadedly connected in the mounting groove (12).

9. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 7, characterized in that: One ear plate (8) is provided, and two connecting plates (5) are provided, and the ear plate (8) is located between the two connecting plates (5). An insertion rod (6) is provided in the middle of the ear plate (8), and nuts (7) are threadedly connected on both sides of the outer wall of the insertion rod (6), and the proximal sides of the nuts (7) on both sides are in contact with the distal sides of the two connecting plates (5) respectively.

10. A dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 9, characterized in that: A through hole (13) is provided in the middle of the two connecting plates (5) and the ear plate (8), the insertion rod (6) is located in the through hole (13), and the width of the through hole (13) is greater than the diameter of the insertion rod (6).

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