A dynamic push-type high-temperature resistant fully rotary steerable drilling tool

Abstract

The present application relates to the technical field of drilling tools, and discloses a dynamic push-type high-temperature resistant fully rotary directional drilling tool, comprising: a drill bit, a guide rod connected to the top thereof, which is used to drive the drill bit to rotate; a guide plate, a motor, a hydraulic pump and a plunger installed inside the guide rod, the guide plate being connected to the plunger, the motor being used to drive the hydraulic pump to operate and push the plunger and the guide plate out so that the guide plate contacts the well wall; a guard plate, which is used to contact the well wall in place of the guide plate, the guard plate being provided with a first clamping strip on one side close to the guide plate, and a second clamping strip on one side close to the guard plate. The guard plate replaces the guide plate in contact and friction with the well wall, and the first and second clamping strips are used 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 simply removing the second bolt, without the need to disassemble the guide plate as a whole, effectively simplifying the maintenance process, avoiding complicated disassembly and assembly operations, and significantly improving replacement efficiency and operating efficiency.

Description

Technical Field

[0001] The present 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 deepening of resource exploration and development, many oil and gas wells are located in complex geological structures or high-temperature deep well environments. To achieve efficient development of target reservoirs, drilling tools are required to accurately control the drill bit trajectory downhole, especially in horizontal wells, extended reach wells, and multi-branch wells.

[0003] Traditional steerable drilling tools, however, struggle to meet modern drilling requirements due to their lack of guidance accuracy and adaptability to complex geology. The dynamic push-and-pull, high-temperature-resistant, fully-rotating steerable drilling tool is a high-end downhole device specifically designed 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 rotates the drill bit via a guide rod, while a hydraulic system extends a guide plate, which contacts the wellbore wall to adjust the drilling direction, ensuring the drill bit stays on the target trajectory. Its high-temperature resistance, dynamic adjustment, and high precision make it an indispensable piece of technical equipment for drilling complex oil and gas wells.

[0004] However, in existing technologies, the guide plates, due to prolonged contact with the wellbore wall, generate intense friction, leading to significant wear. To ensure proper operation, replacement of the guide plates is essential. However, the guide plates are typically tightly connected to hydraulic push arms or mechanical structures, often employing an integrated fixed design. This design prevents the guide plates from being independently disassembled, requiring the entire guide assembly to be replaced upon wear. This significantly increases maintenance costs and leads to extended downtime, severely impacting operational efficiency. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a dynamic push-type high-temperature resistant fully rotary directional drilling tool, which solves the problem in the existing technology 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, extended downtime, and seriously affects work efficiency.

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

[0007] A drill bit, the top of which is connected to a guide rod for driving 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 bolt 2 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 first card slot is provided on one side of the guide plate, and the first card strip is located in the first card slot.

[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 mounting groove is provided on one side of the guard plate, and the end of the second bolt is threadedly connected in the second mounting groove.

[0014] Preferably, a support is installed on the outer wall of the guide rod, and 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 to 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 insert rod is provided in the middle of the ear plate, and nuts are threadedly connected on both sides of the outer wall of the insert 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 provided 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, it is only necessary to remove the second bolt to easily remove the guard plate from the guide plate. There is no 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 pulls the rod out of the ear plate, allowing the guide plate to rotate freely around the rotating shaft, thereby fully opening the guide plate and moving 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 disassembled diagram of the shaft structure of the present invention;

[0025] Figure 4 A top view of the 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 sectional 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. clip strip one; 17. clip slot one; 18. clip strip two; 19. clip slot two; 20. mounting slot two. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall 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 with reference to specific embodiments.

[0033] Please see the attached Figure 1-Figure 7 An embodiment of the present invention provides a dynamic push-type high-temperature resistant fully rotary directional drilling tool, comprising: a drill bit 1, a guide rod 2 connected to the top of 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 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 second bolt 14, and is used to replace the guide plate 3 in contacting the well wall, the guard plate 15 is provided with a first clamping strip 16 on the side close to the guide plate 3, and the guide plate 3 is provided with a second clamping strip 18 on the side close to the guard plate 15, and 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.

[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 enough pressure in the plunger cavity to push the plunger out, thereby driving the guide plate 3 to be ejected and contact with the well wall to realize 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 realizing precise guided drilling, and the guard plate 15 is fixed to the outer wall of the guide plate 3 by bolts 14. It replaces the guide plate 3 in direct contact with the well wall, bearing 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 the attached Figure 2-Figure 6 The guard plate 15 has a second slot 19 on one side, and the second clip 18 is located in the second slot 19. The guide plate 3 has a first slot 17 on one side, and the first clip 16 is located in the first slot 17. The cross-sections of the second slot 19, the first slot 17, the second clip 18, and the first clip 16 are all T-shaped. The guard plate 15 has a second mounting slot 20 on one side, and the end of the second bolt 14 is threadedly connected to the mounting 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 to be 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 the 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 the attached Figures 1-8 The guide plate 3 is fixedly connected to the side of the guide rod 2 away from the rotating shaft 10. The side of the guide plate 3 is movably connected to the connecting plate 5. The side of the connecting plate 5 is fixedly connected to the sleeve 4. The plunger is installed in the sleeve 4 by a bolt 11. The sleeve 4 has a mounting groove 12 formed inside, and the end of the bolt 11 is threadedly connected to the mounting 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 the installation 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 the attached Figures 1-8One ear plate 8 is provided, and two connecting plates 5 are provided, with the ear plate 8 positioned between the two connecting plates 5. A 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 rod 6, with the proximal sides of the nuts 7 contacting the distal sides of the two connecting plates 5. A through hole 13 is formed in the middle of each of the two connecting plates 5 and the ear plate 8. The rod 6 is positioned within the through hole 13, and the width of the through hole 13 is greater than the diameter of the 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. 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 in contact with the distal sides of the two connecting plates 5 respectively. 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, while also allowing 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, it not only provides the necessary space margin for the installation of the insertion rod 6, but also allows a certain adjustment room after the insertion rod 6 is installed, so that the connecting plate 5 and the ear plate 8 can move flexibly within a certain range, so that they can effectively absorb external shocks or vibrations and avoid damage to components 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 hole formation. During this process, the motor starts and drives the hydraulic pump to pressurize the hydraulic oil and deliver it to the plunger cavity. Then, the plunger is pushed out 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 to generate friction with the well wall, and the contact force of the guard plate 15 with 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 plunger's ejection force and the angle of the guide plate 3 according to 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 out of the well, and then When the cam 11 is released, the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate 3 and the guide rod 2 are released, and the guide plate

[0044] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 its top for driving the drill bit (1) to rotate; A guide plate (3) is movably connected to the outer wall of the guide rod (2), wherein a motor, a hydraulic pump and a plunger are installed inside the guide rod (2), and the guide plate (3) and the plunger are connected, wherein the motor is used to drive the hydraulic pump to operate and 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 a second bolt (14) and is used to replace the guide plate (3) in contact with the well wall. The guard plate (15) is provided with a first clamping strip (16) on one side close to the guide plate (3), and the guide plate (3) is provided with a second clamping strip (18) on one side 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); A support (9) is installed on the outer wall of the guide rod (2), a rotating shaft (10) is connected to one side of the guide plate (3), and the rotating shaft (10) passes through the support (9); The guide plate (3) is fixedly connected to a lug plate (8) on a 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 a bolt (11); 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).

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

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

5. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, characterized in that: A second mounting 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 mounting groove (20).

6. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, characterized in that: A mounting groove (12) is provided inside the sleeve (4), and the end of the bolt (11) is threadedly connected to the mounting groove (12).

7. The dynamic push-type high temperature resistant fully rotary steerable drilling tool according to claim 1, 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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