A deep well anti-whirl steerable drilling apparatus

Abstract

The utility model relates to the technical field of well drilling engineering equipment discloses a deep well anti-vortex guiding well drilling device, including support, lifting module, tubular product, bottom plate and positioning mechanism, the tubular product of lifting module drive is equipped in the inside of support, the bottom plate is fixed in the support bottom end, is equipped with the positioning mechanism on it, the positioning mechanism includes motor, connecting rod, support rod, inclined block and long board subassembly, motor drive connecting rod and support rod push inclined block and slide on the bottom plate, the convex block on inclined block and the long groove in the long board slide fit, realize the radial direction guiding of tubular product, the utility model still optimally sets up and contains the quick dismounting irrigation mechanism of pressing inclined groove subassembly of rotating column, L type piece, the utility model discloses through the inclined block guiding structure of motor drive, effectively limited the vortex of tubular product in the deep well operation, improved the well drilling perpendicularity and stability, cooperate the irrigation mould of quick dismounting simultaneously, has improved the construction efficiency remarkably.

Description

Technical Field

[0001] This utility model relates to the field of drilling engineering equipment technology, and in particular to a deep well anti-vortex directional drilling device. Background Technology

[0002] Deep well drilling is a crucial foundational engineering project in the development of oil, natural gas, and geothermal resources. As exploration depths increase, the geological environment faced by drilling operations becomes increasingly complex. During drilling, slender drill pipes or tubing, as key components connecting surface equipment to the drill bit at the bottom of the well, must operate under extremely high rotational speeds and immense axial pressure.

[0003] However, existing drilling rigs often lack effective radial restraint mechanisms when operating in deep wells. Especially when encountering the interface between hard and soft formations or enlarged sections of the wellbore, the high-speed rotating tubing is highly susceptible to centrifugal force and formation reaction forces, resulting in severe lateral vibration or vortex phenomena. This vortex not only causes the wellbore trajectory to deviate from the designed path, severely affecting drilling quality, but also accelerates fatigue failure of drill pipe joints and can even lead to drill string breakage, causing significant economic losses. Although some existing technologies attempt to use centralizers, traditional centralizers are typically fixed in structure, unable to be flexibly adjusted or released according to the real-time operating conditions of the tubing, and are prone to stuck pipe during tripping in and out of the well, resulting in poor operational flexibility.

[0004] Therefore, this utility model proposes a deep well anti-vortex directional drilling device to overcome the shortcomings of the prior art. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a deep well anti-vortex directional drilling device, which aims to improve the existing technology of some deep well drilling equipment. When performing deep operations, the slender drill rod or pipe is easily affected by centrifugal force and formation reaction force, resulting in severe vortex, which leads to borehole deviation, accelerated equipment wear, and even drill breakage accidents. In addition, the existing straightening device has a fixed structure and is inconvenient to operate, which is prone to drill jamming. At the same time, the existing wellhead casting mold is usually connected by bolts, which is cumbersome and time-consuming to disassemble and assemble, resulting in low construction efficiency.

[0006] This utility model provides a deep well anti-vortex directional drilling device, comprising: a support, a lifting module, a pipe, a base plate, and a positioning mechanism. The lifting module is fixed to the top of the support; the pipe is disposed inside the support and connected to the lifting module for lifting operations; the base plate is fixed to the bottom inside the support for supporting subsequent components; the positioning mechanism is disposed on the base plate for radially constraining the pipe.

[0007] The positioning mechanism includes a motor, a connecting rod, a support rod, an inclined block, a protrusion, a long plate, and a long groove. The long plate is fixed to the top of the base plate, and the long groove is formed within the long plate. The inclined block is slidably disposed on the top of the base plate, and the protrusion is fixed to the outer wall of the inclined block and slidably engaged within the long groove, forming a limiting and guiding structure. The motor is fixed to the top of the base plate, and its output end is connected to the connecting rod. The connecting rod is connected to the support rod, and the support rod is connected to the inclined block, forming a crank-slider type drive transmission chain.

[0008] Furthermore, the motor, the connecting rod, the support rod, and the inclined block are combined through a transmission connection. The motor drives the connecting rod to swing, and the support rod pushes or pulls the inclined block to slide on the base plate. With the help of the protrusion in the long groove, the inclined block can move along a predetermined trajectory toward the pipe, thereby guiding and limiting the pipe.

[0009] Preferably, the system further includes a pouring mechanism located at the bottom of the support. The pouring mechanism includes an arc shell one and an arc shell two, which are connected to each other to form a mold cavity required for concrete pouring.

[0010] Preferably, a fixing block is fixed to the outer wall of the second arc shell, and the fixing block is connected to the outer shell; the outer shell is fixed to the first arc shell, and a limiting groove is formed inside the outer shell. The fixing block and the outer shell serve as a connection interface, and together with the limiting groove, provide a structural basis for subsequent quick locking.

[0011] Preferably, the fixing block has a rotating column inside, and the rotating column is rotatably connected to an L-shaped block; one end of the L-shaped block is inserted into the limiting groove, so that the first arc shell and the second arc shell are fixedly connected. The rotating snap-fit ​​of the L-shaped block replaces the traditional bolt fastening method, realizing the rapid locking of the two parts of the mold.

[0012] Preferably, the L-shaped block has an inclined groove at the end away from the limiting groove; the fixing block has a pressing block that engages with the inclined groove; the pressing block is configured to press the inclined groove when pressed, driving the L-shaped block to rotate around the rotating column and move the L-shaped block away from the limiting groove. Utilizing the inclined plane transmission principle, the vertical pressing force is converted into rotational torque, thereby achieving a quick unlocking function that can be completed with one hand.

[0013] Preferably, the watering mechanism further includes a reset component, which includes a spring. The spring is disposed within the fixed block, and its two ends are respectively connected to the inner wall of the fixed block and the pressing block for resetting the pressing block. The presence of the spring ensures that the pressing block can automatically rebound after the external force is removed, facilitating the next operation.

[0014] Preferably, the connecting rod drives the inclined block to slide on the top of the base plate via the support rod, and causes the protrusion to slide within the long groove, thereby positioning the inclined block on the pipe. This dual guiding mechanism ensures the smoothness and accuracy of the positioning action.

[0015] Preferably, the support is an integral frame structure, the lifting module is used to drive the pipe to rise and fall, and the base plate is located inside the support and above the pouring mechanism. This reasonable layout design ensures that drilling and pouring operations do not interfere with each other, and the overall structure is compact and stable.

[0016] This utility model has the following beneficial effects: 1. This utility model, through a positioning mechanism set on the top of the base plate, uses a motor to drive the inclined block to move along the long groove trajectory towards the pipe, so that the concave arc surface on the inclined block forms a precise guiding fit with the outer wall of the pipe. This solves the problem in the prior art that the pipe is prone to vortexing due to soft soil or centrifugal force during deep well drilling operations, resulting in borehole deviation and accelerated equipment wear. It achieves the technical effect of effectively limiting the radial swing of the pipe, improving drilling verticality and extending the service life of the equipment.

[0017] 2. This utility model, by setting a quick-assembly and disassembly assembly including a rotating column, an L-shaped block and a pressing block in the pouring mechanism, uses the L-shaped block to lock the mold by engaging with the limiting groove, and uses the pressing block to squeeze the inclined groove to drive the L-shaped block to rotate to achieve quick unlocking. This solves the problem that existing wellhead pouring molds usually use bolt connections, which are cumbersome to disassemble and assemble, time-consuming and prone to parts loss. It achieves the technical effect of greatly simplifying the mold disassembly and assembly process, significantly improving construction efficiency and reducing labor intensity.

[0018] 3. This utility model solves the problem of motion trajectory deviation or jamming that occurs when the slider is pushed by a connecting rod alone by setting a protrusion on the outer wall of the inclined block and forming a sliding fit with the long groove in the long plate, thus achieving the technical effect of ensuring smooth movement of the inclined block and accurate guidance and positioning. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a deep well anti-eddy current directional drilling device proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the base plate of a deep well anti-eddy current directional drilling device proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the outer shell of a deep well anti-eddy current directional drilling device proposed in this utility model; Figure 5 This is a schematic diagram of the long slot structure of a deep well anti-vortex directional drilling device proposed in this utility model.

[0020] Legend: 1. Bracket; 2. Lifting module; 3. Piping; 4. Irrigation mechanism; 41. Arc shell one; 42. Arc shell two; 43. Outer shell; 44. L-shaped block; 45. Rotating column; 46. Pressing block; 47. Fixing block; 48. Reset assembly; 481. Spring; 482. Limiting groove; 483. Inclined groove; 5. Positioning mechanism; 51. Motor; 52. Connecting rod; 53. Support rod; 54. Inclined block; 55. Protrusion; 56. Long plate; 57. Long groove; 6. Base plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0022] Reference Figures 1 to 5 This utility model provides a deep well anti-vortex directional drilling device, which aims to solve the structural defects in the prior art where the pipe 3 is prone to vortexing during the deep well drilling process, resulting in decreased drilling accuracy, large equipment wear, and cumbersome disassembly and assembly of wellhead casting molds, leading to low construction efficiency.

[0023] like Figure 1 and Figure 2As shown, the device includes a support frame 1 with an overall frame tower structure and a lifting module 2 fixedly connected to the top of the support frame 1. The support frame 1 serves as the main support frame of the entire device, providing installation space and structural strength support for the internal components. The lifting module 2 is used to provide vertical power drive for deep well operations. A pipe 3 is installed in the internal space of the support frame 1. The upper end of the pipe 3 is connected to the lifting module 2. The lifting module 2 drives the pipe 3 to move vertically to perform drilling or pipe running operations through the cooperation of a winch and a fixed pulley group. A base plate 6 is fixedly connected to the crossbeam at the bottom of the support frame 1. The base plate 6 has a ring-shaped structure and a channel in the center for the pipe 3 to pass through. The base plate 6 serves as the bearing platform for the core functional components. A positioning mechanism 5 for radially limiting the pipe 3 is installed on its top. At the same time, a pouring mechanism 4 for pouring concrete at the wellhead is installed at the bottom of the support frame 1 and below the positioning mechanism 5. A precision positioning mechanism 5 is installed on the base plate 6.

[0024] Reference Figure 2 and Figure 5 The positioning mechanism 5 includes a long plate 56 fixedly installed on the top of the base plate 6. The interior of the long plate 56 has a long groove 57 extending horizontally, and a wedge 54 is slidably connected to the top of the base plate 6. The outer wall of the wedge 54 is integrally formed or fixedly connected to a protrusion 55. The protrusion 55 is slidably engaged inside the long groove 57. This sliding block and guide groove engagement structure limits the wedge 54 to only linear reciprocating motion along the length of the long groove 57, i.e., towards or away from the center of the base plate 6, thereby ensuring the accuracy of the motion trajectory and preventing the wedge 54 from deflecting. The positioning mechanism 5 also includes a motor 51 fixedly installed on the top of the base plate 6. The motor 51 serves as a power source, and its output shaft is driven by a connecting rod 52. The end of the connecting rod 52 away from the motor 51 is rotatably connected to a support rod 53. The end of the support rod 53 away from the connecting rod 52 is fixedly connected to the wedge 54. The rotation of the motor 51 drives the connecting rod 52 to swing, and then the support rod 53 pushes or pulls the wedge 54 to slide on the base plate 6.

[0025] When anti-vortex guidance is required, the starter motor 51 drives the inclined block 54 to move towards the center of the base plate 6 until the side of the inclined block 54 facing the pipe 3 is in contact with the outer wall of the pipe 3 or forms a micro-gap fit. The side of the inclined block 54 facing the pipe 3 is designed as a concave arc surface, and the radius of curvature of the concave arc surface is adapted to the outer diameter of the pipe 3. Thus, without hindering the rotation and lifting of the pipe 3, the swing amplitude of the pipe 3 in the horizontal direction is effectively limited, realizing the anti-vortex guidance function.

[0026] like Figure 2 , Figure 3 and Figure 4As shown, the pouring mechanism 4 mainly includes an arc shell 41 and an arc shell 42 that is spliced ​​and matched with the arc shell 41. After the arc shell 41 and the arc shell 42 are spliced ​​together, they form a ring-shaped structure and surround the outer circumference of the pipe 3, thus forming a mold cavity for pouring concrete. The structural design allows the mold to surround the wellhead and the pipe 3 for operation. A fixing block 47 is fixedly connected to one side of the outer wall of the arc shell 42. An outer shell 43 is fixedly connected to the arc shell 41 at the position corresponding to the fixing block 47. A limiting groove 482 communicating with the inner wall of the outer shell 43 is opened. A rotating column 45 is set inside the fixing block 47. An L-shaped block 44 is rotatably connected to the outer circumference of the rotating column 45. One end of the L-shaped block 44 extends to the outside of the fixing block 47 and is engaged in the limiting groove 482 inside the outer shell 43. Through the mechanical engagement of the L-shaped block 44 and the limiting groove 482, the arc shell 41 and the arc shell 42 are locked and fixed, ensuring the overall stability of the mold during the pouring process.

[0027] The L-shaped block 44 has an inclined groove 483 at its end away from the limiting groove 482. The inner wall of the inclined groove 483 has an inclined guide surface. A pressing block 46 is slidably connected to the top of the fixing block 47. The bottom end of the pressing block 46 extends into the interior of the fixing block 47 and abuts against the inclined guide surface of the inclined groove 483. The pressing block 46 is configured to drive the L-shaped block 44 to rotate around the rotating column 45 by using the squeezing action of its bottom end against the inclined surface of the inclined groove 483 when it moves downward under pressure. This causes the L-shaped block 44 to lock. The end disengages from the limiting groove 482 and is released from the locked state. The watering mechanism 4 also includes a reset component 48, which includes a spring 481. The spring 481 is disposed inside the fixed block 47. One end of the spring 481 is fixedly connected to the inner wall of the fixed block 47, and the other end of the spring 481 is fixedly connected to the side wall of the pressing block 46. When the pressure on the pressing block 46 is removed, the elastic restoring force of the spring 481 will push the pressing block 46 to move upward and reset, preparing for the next operation.

[0028] The implementation principle of this application embodiment is as follows: When performing deep well drilling operations, the lifting module 2 drives the pipe 3 to move vertically inside the support 1. In order to prevent the pipe 3 from vortexing due to uneven soil layers during high-speed rotation or lowering, the motor 51 in the positioning mechanism 5 is activated. The motor 51 drives the connecting rod 52 to swing, and then pushes the inclined block 54 to slide on the top of the base plate 6 through the support rod 53, so that the protrusion 55 moves smoothly along the trajectory of the long groove 57 until the concave arc surface of the inclined block 54 forms a guiding fit with the outer wall of the pipe 3, thereby limiting the radial swing of the pipe 3 and improving the drilling verticality.

[0029] When reinforcement and grouting of the wellhead is required, the arc shell 41 and arc shell 42 of the grouting mechanism 4 are placed around the wellhead position, so that the fixing block 47 on the arc shell 42 aligns with the outer shell 43 on the arc shell 41. At this time, one end of the L-shaped block 44 is inserted into the limiting groove 482, achieving quick locking of the two. After grouting is completed, the pressing block 46 is pressed down, and the pressing block 46 squeezes the inclined groove 483 on the other end of the L-shaped block 44, forcing the L-shaped block 44 to rotate around the rotating column 45 and exit the limiting groove 482, thus quickly separating the arc shell 41 and arc shell 42. Then, the spring 481 in the reset assembly 48 assists the pressing block 46 to reset. The whole process does not require the use of complicated tools, greatly improving construction efficiency.

Claims

1. A deep well anti-vortex steerable drilling device, comprising: Support (1), lifting module (2), pipe (3), base plate (6) and positioning mechanism (5); The lifting module (2) is fixed to the top of the bracket (1), the pipe (3) is located inside the bracket (1) and connected to the lifting module (2), the base plate (6) is fixed to the bottom inside the bracket (1); the positioning mechanism (5) is located on the base plate (6); The positioning mechanism (5) is characterized in that it includes a motor (51), a connecting rod (52), a support rod (53), an inclined block (54), a protrusion (55), a long plate (56), and a long groove (57). The long plate (56) is fixed to the top of the base plate (6), the long groove (57) is opened in the long plate (56), the inclined block (54) is slidably disposed on the top of the base plate (6), the protrusion (55) is fixed to the outer wall of the inclined block (54) and slidably engaged in the long groove (57), the motor (51) is fixed to the top of the base plate (6), the output end of the motor (51) is connected to the connecting rod (52), the connecting rod (52) is connected to the support rod (53), and the support rod (53) is connected to the inclined block (54).

2. The deep well anti-eddy coercive drilling device according to claim 1, characterized in that, It also includes a watering mechanism (4), which is located at the bottom of the support (1). The watering mechanism (4) includes an arc shell one (41) and an arc shell two (42), and the arc shell one (41) and the arc shell two (42) are connected.

3. The deep well anti-eddy coercive drilling device according to claim 2, characterized in that, The outer wall of the second arc shell (42) is fixed with a fixing block (47), the fixing block (47) is connected to the outer shell (43), the outer shell (43) is fixed on the first arc shell (41), and a limiting groove (482) is opened in the outer shell (43).

4. A deep well anti-eddy coercive drilling device according to claim 3, characterized in that, The fixed block (47) is provided with a rotating column (45), and the rotating column (45) is rotatably connected to an L-shaped block (44). One end of the L-shaped block (44) is inserted into the limiting groove (482), so that the first arc shell (41) and the second arc shell (42) are fixedly connected.

5. A deep well anti-eddy coercive drilling device according to claim 4, characterized in that, The L-shaped block (44) has an inclined groove (483) at one end away from the limiting groove (482). The fixing block (47) is provided with a pressing block (46). The pressing block (46) is pressed and engaged with the inclined groove (483). The pressing block (46) is configured to press the inclined groove (483) when pressed, thereby driving the L-shaped block (44) to rotate around the rotating column (45) and causing the L-shaped block (44) to leave the limiting groove (482).

6. A deep well anti-eddy coercive drilling device according to claim 5, characterized in that, The watering mechanism (4) further includes a reset component (48), which includes a spring (481). The spring (481) is located inside the fixed block (47). The two ends of the spring (481) are respectively connected to the inner wall of the fixed block (47) and the pressing block (46) for resetting the pressing block (46).

7. A deep well anti-eddy coercive drilling device according to claim 1, characterized in that, The connecting rod (52) drives the inclined block (54) to slide on the top of the base plate (6) through the support rod (53), and causes the protrusion (55) to slide in the long groove (57) to achieve the positioning of the pipe (3) by the inclined block (54).

8. A deep well anti-eddy coercive drilling device according to claim 2, characterized in that, The bracket (1) is an integral frame structure, the lifting module (2) is used to drive the pipe (3) to rise and fall, and the base plate (6) is inside the bracket (1) and above the irrigation mechanism (4).

Images