Intelligent rotary steering drilling device

Abstract

The invention relates to an intelligent rotary steering well drilling device applied to the field of well drilling equipment, a drill bit and a drill collar form radial connection through two inserting units and a fixing block, so that when the operation feasibility of removing the drill jamming state through reverse rotation is low, the prompt effect can be achieved by means of resistance encountered during reverse rotation, and the drilling efficiency is improved. In addition, through cooperation of a driving motor with double output ends and a rotating connector, when a second pipe body rotates to achieve alternate extension of a plunger, a cleaning rod can be driven to continuously clean the filter screen, and finally, through a threaded piece, a movable piece, a driven gear, a tooth piece and a constraint gear, the filter screen can be continuously cleaned. The auxiliary drill bit realizes adjustment of the connection mode of the drill bit and the drill collar during drill jamming, so that multi-angle drill jamming relieving operation is facilitated.

Description

Technical Field

[0001] The invention relates to a rotary steering drilling device, in particular to an intelligent rotary steering drilling device applied in the field of drilling equipment. Background Art

[0002] Rotary steerable drilling equipment is an important part of modern drilling technology. It plays a key role in oil and gas development through its precise wellbore trajectory control and high-efficiency drilling capabilities. With the continuous advancement of technology, rotary steerable equipment will continue to promote the development of the drilling industry in the future. Compared with traditional drilling methods, rotary steerable drilling equipment can adjust the wellbore trajectory while the drill string rotates, thereby improving drilling efficiency and accuracy.

[0003] The specification of Chinese invention patent CN118167202A discloses a rotary steerable drilling system, which relates to the technical field. The drill bit can be steered in different directions by multiple groups of circumferentially arranged push-and-pull assemblies. It has the advantages of simple structure and convenient control. In addition, the specification of Chinese invention patent CN118128428A discloses a rotary steerable drilling device, which requires few components, effectively saves the manufacturing cost of the instrument, is easy to control, and can effectively improve the reliability of downhole tools and improve the guidance and deflection accuracy.

[0004] When the existing rotary steerable drilling equipment is working, it uses the driving force of the fluid to achieve the corresponding guiding processing, but it is difficult to make effective adjustments when the drill bit is stuck, especially when the drill bit needs to be rotated in the opposite direction to remove it. The threaded connection direction between the drill bit and the drill string is the same as the rotation direction of the drill bit, and the clamping effect between the drill bit and the clamping point is greater than the threaded connection effect between the drill bit and the drill string, which will cause the drill bit to separate from the drill string during the reversal process. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to assist the drill bit used for directional drilling to achieve flexible handling in the drill stuck state.

[0006] In order to solve the above problems, the present invention provides an intelligent rotary steerable drilling device, comprising a drill collar, a centralizer is installed on the surface of one end of the drill collar, a No. 1 pipe body is connected through one end of the drill collar, the end of the No. 1 pipe body is connected to the No. 2 pipe body through a rotary joint, and a flow guide is installed inside the drill collar; The inner wall at the other end of the drill collar is equipped with two symmetrically arranged plug-in units, and the plug-in unit includes a block, a movable frame is hinged on the surface of the block, a micro electric extension rod is connected to the inner side of the movable frame, a plug-in block is hinged on the tail end of the movable frame, and a tooth condition is connected to one side surface of the plug-in block; The other end of the drill collar is internally threadedly connected to a threaded part with two symmetrically arranged constraint grooves, the interior of the threaded part is movably connected to a movable part through a movable ball, the end of the movable part facing away from the guide part is fixedly connected to a drill bit, the other end of the movable part is fixedly connected to a fixed block with a built-in through groove, the interior of the through groove is equipped with a gear constrained by a tooth condition through a damping shaft, the interior of the movable part is equipped with a driven gear, and the driven gear and the constraint gear are connected by a long rod, and the surface of the driven gear is meshingly connected to two splice racks that match the constraint grooves.

[0007] In the above-mentioned intelligent rotary steerable drilling device, the drill bit and the drill collar can be connected axially and radially by means of the plug-in unit and the threaded connection, so that when the operability of the subsequent reverse rotation to release the stuck drill state is poor, the resistance during the reversal can serve as a prompt.

[0008] As a further improvement of the present application, a driving motor is installed on the inner wall of the drill shank, and the driving motor has dual output ends, both output ends of the driving motor are connected to a transmission unit, a plurality of guide tubes with their tail ends extending to the outer surface of the drill shank are installed through the inner wall of the guide member, a plunger is slidably connected to the inner wall of the guide tube, a liquid outlet with a diameter not greater than the inner diameter of the guide tube is provided on the tail end surface of the No. 2 tube body, and the tail end of the No. 2 tube body is rotatably connected to the interior of the guide member.

[0009] As a further improvement of the present application, the transmission unit includes a No. 1 gear and a No. 2 gear meshing with the No. 1 gear, wherein the two No. 1 gears are respectively connected to the two output ends of the driving motor, and the two No. 2 gears are respectively sleeved on the surfaces of the No. 1 tube body and the No. 2 tube body.

[0010] As a further improvement of the present application, a filter screen and a bracket are fixedly connected to the inner wall of one end of the No. 1 tube body facing away from the No. 2 tube body, and the bracket is located on the side of the filter screen close to the No. 2 tube body. The surface of the bracket is rotatably connected to a rod body extending to the outside of the filter screen, and the surface of the rod body is connected to a cleaning rod that fits the outer surface of the filter screen.

[0011] As a further improvement of the present application, in the initial state, the vertical distance between the two plug-in blocks is greater than the height of the fixed block, and in the initial state, the ends of the two plug-in racks facing away from the driven gear do not protrude from the surface of the movable part.

[0012] As a further improvement of the present application, when the two gears are close to each other, they mesh with the constraint gear, the constraint gear drives the driven gear to rotate, and the driven gear drives the two splicing racks to be plugged into the constraint groove.

[0013] As a further improvement of the present application, an integrated control board is installed inside the drill collar, and an attitude measurement sensor and an azimuth gamma sensor are installed on the integrated control board to detect the inclination attitude information of the drill bit.

[0014] As a further improvement of the present application, when the fixing block is connected to the drill collar via a threaded member, the through groove in the fixing block coincides with the projection of the plug-in block in the vertical direction.

[0015] As a further improvement of the present application, there is a gap between one end of the drill bit close to the drill collar and the end of the threaded member, and the end of the threaded member is connected to the surface of the movable member through an elastic filter cloth.

[0016] To summarize, the drill bit and the drill collar are radially connected through two plug-in units and a fixed block, so that when the feasibility of reverse rotation to release the stuck drill state is low, the resistance encountered during reverse rotation can serve as a prompt. In addition, through the cooperation of the driving motor and the rotary joint at the dual output ends, when the No. 2 pipe body rotates to achieve alternate extension of the plunger, the cleaning rod can be driven to continuously clean the filter. Finally, through the threaded parts, movable parts, driven gears, tooth conditions and constraint gears, the auxiliary drill bit can adjust the connection mode between the drill bit and the drill collar when the drill is stuck, thereby facilitating the multi-angle release of the stuck drill operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application; Figure 2 This is a schematic diagram of the internal structure of a drill collar according to the first embodiment of the present application; Figure 3 For this application Figure 2 A is an enlarged schematic diagram; Figure 4 This is a schematic diagram of the state in which the drill collar and the drill bit fall off during reverse rotation according to the prior art of this application; Figure 5 This is a schematic diagram of the liquid outlet on the surface of the No. 2 tube body in the first embodiment of the present application; Figure 6 This is a structural diagram of the filter screen and the cleaning rod of the first embodiment of the present application; Figure 7 This is a state diagram of the relative rotation of the first pipe body and the second pipe body in the first embodiment of the present application; Figure 8 This is an installation diagram of a threaded member, a movable member and a drill bit according to a second embodiment of the present application; Fig. 9 This is an installation diagram of a fixed block, a movable part and a plug-in unit according to a second embodiment of the present application; Fig.10 for Fig. 9 The enlarged schematic diagram of point B in FIG. Fig.11 This is an installation diagram of a splicing rack, a constraining gear and a driven gear according to a second embodiment of the present application; Fig.12This is a state diagram of the splice rack of the second embodiment of the present application extending out of the movable part when the constraining gear and the driven gear rotate.

[0018] Description of the numbers in the figure: 1. Drill collar; 2. Stabilizer; 3. Drill bit; 4. Filter; 41. Cleaning rod; 5. Transmission unit; 51. Gear No. 1; 52. Gear No. 2; 6. Driving motor; 7. Pipe No. 1; 8. Pipe No. 2; 9. Guide piece; 91. Guide pipe; 92. Plunger; 10. Plug-in unit; 101. Block; 102. Micro electric extension rod; 103. Movable frame; 104. Gear condition; 105. Plug-in block; 11. Threaded part; 12. Movable part; 13. Fixed block; 14. Constraint gear; 15. Plug-in rack; 16. Driven gear. DETAILED DESCRIPTION

[0019] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0020] The first implementation method: Figure 1-Figure 2 An intelligent rotary steerable drilling device is shown, comprising a drill collar 1, a centralizer 2 is installed on one end surface of the drill collar 1, a No. 1 pipe body 7 is connected through one end of the drill collar 1, a No. 2 pipe body 8 is connected to the end of the No. 1 pipe body 7 through a rotary joint, and a flow guide 9 is installed inside the drill collar 1; Figure 3 As shown, two symmetrically arranged plug-in units 10 are installed on the inner wall of the other end of the drill collar 1, and the plug-in unit 10 includes a block 101, a movable frame 103 is hinged on the surface of the block 101, a micro electric extension rod 102 is connected to the inner side of the movable frame 103, and a plug-in block 105 is hinged at the tail end of the movable frame 103; When the fixing block 13 is connected to the drill collar 1 through the screw member 11 , the through groove in the fixing block 13 coincides with the projection of the plug-in block 105 in the vertical direction.

[0021] Specifically, when installing the drill bit 3 on the drill collar 1, it is necessary to first thread the threaded part 11 to one end of the drill collar 1. Since the drill bit 3 and the movable part 12 are fixedly connected and the movable part 12 is movably connected to the threaded part 11 in the initial state, the fixed block 13 fixedly connected to the movable part 12 follows and enters the interior of the drill collar 1. Then, the micro-electric extension rod 102 is started to make the movable frame 103 move inward, thereby driving the plug-in block 105 to move downward until it is plugged into the through groove, thereby indirectly forming a radial connection to the drill bit 3.

[0022] Therefore, when the drill is stuck and needs to be rotated in the reverse direction to drive the drill bit 3 to release the drill stuck state, if the tightening direction of the drill collar 1 and the threaded member 11 is in the forward direction, the rotation direction of the drill bit 3 is in the forward direction, and the force required for the drill bit 3 to release the drill stuck state is greater than the thread tightening effect of the drill collar 1 and the threaded member 11 (that is, when rotating in the reverse direction, the drill bit 3 is affected by the drill stuck effect, and when the drill collar 1 rotates in the reverse direction, the drill bit 3 and the drill collar 1 are in a relatively static state, which will gradually release the thread relationship between the drill collar 1 and the threaded member 11, thereby causing the drill bit 3 to fall off), at this time, the drill bit 3 will be separated from the end of the drill collar 1 (such as Figure 4 as shown).

[0023] For this purpose, a plug-in unit 10 is designed to form a radial plug-in process with the drill bit 3. Even when reversing, it will be constrained by the plug-in block 105 and the through groove to form an obstruction to serve as a reminder and avoid separation of the drill bit 3 and the drill collar 1 due to blind reversal.

[0024] Figure 5 It is shown that a driving motor 6 is installed on the inner wall of the drill collar 1, and the driving motor 6 has dual output ends, and the two output ends of the driving motor 6 are connected to the transmission unit 5. A plurality of guide tubes 91 with their tail ends extending to the outer surface of the drill collar 1 are installed through the inner wall of the guide member 9, and a plunger 92 is slidably connected to the inner wall of the guide tube 91. A liquid outlet with a diameter not greater than the inner diameter of the guide tube 91 is provided on the tail end surface of the No. 2 tube body 8, and the tail end of the No. 2 tube body 8 is rotatably connected to the inside of the guide member 9.

[0025] The transmission unit 5 includes a first gear 51 and a second gear 52 meshing with the first gear 51 , wherein the two first gears 51 are respectively connected to the two output ends of the driving motor 6 , and the two second gears 52 are respectively sleeved on the surfaces of the first tube body 7 and the second tube body 8 .

[0026] Figure 6 It is shown that the inner wall of one end of the No. 1 tube body 7 facing away from the No. 2 tube body 8 is fixedly connected with a filter 4 and a bracket, and the bracket is located on the side of the filter 4 close to the No. 2 tube body 8, and the surface of the bracket is rotatably connected with a rod body extending to the outside of the filter 4, and the surface of the rod body is connected with a cleaning rod 41 that fits with the outer surface of the filter 4.

[0027] Specifically, during guidance, the mud flow is filtered through the filter screen 4 on the surface of the No. 1 pipe body 7 and then enters the No. 2 pipe body 8. The transmission unit 5 on the surface of the No. 2 pipe body 8 is driven to rotate by the driving motor 6, and the liquid outlet on the surface of the No. 2 pipe body 8 is adjusted to be alternately aligned with multiple guide tubes 91, driving the impact plunger 92 to move and abut against the inner wall of the well. Under the continuous action of the subsequent liquid, the plunger 92 is alternately pushed out from the surface of the drill collar 1, thereby guiding the drill bit 3.

[0028] In addition, when both output ends of the driving motor 6 are in a rotating state, the connection between the transmission unit 5 and the No. 1 tube body 7 can be used to drive the differential relative rotation of the No. 1 tube body 7 and the No. 2 tube body 8. Under the action of the rotating joint, the liquid can flow smoothly between the No. 1 tube body 7 and the No. 2 tube body 8 without interfering with the relative rotation between the two.

[0029] When the first tube body 7 rotates, the fixedly connected bracket drives the rod body to rotate, and then drives the cleaning rod 41 on the surface of the rod body to rotate, so as to continuously and effectively clean the filter screen 4 on the surface, thereby preventing the first tube body 7 and the second tube body 8 from being blocked by foreign matter in the liquid inside. Figure 7 as shown).

[0030] In the initial state, the vertical distance between the two plug-in blocks 105 is greater than the height of the fixed block 13 , and in the initial state, the ends of the two plug-in racks 15 facing away from the driven gear 16 do not protrude from the surface of the movable member 12 .

[0031] Specifically, such a design can ensure that the fixing block 13 will not be blocked by the plug-in block 105 when the thread is rotated into the interior of the drill collar 1 .

[0032] An integrated control board is installed inside the drill collar 1 , and an attitude measurement sensor and an azimuth gamma sensor are installed on the integrated control board to detect the tilt attitude information of the drill bit 3 .

[0033] Specifically, the use of high-precision sensors can assist in achieving the accuracy of information collected when the drill bit 3 is working, and provide reliable data for subsequent intelligent adjustments.

[0034] The second implementation method: Figure 8-Figure 11 It is shown that the other end of the drill collar 1 is internally threadedly connected with a threaded member 11 with two symmetrically arranged constraint grooves, the interior of the threaded member 11 is movably connected with a movable member 12 through a movable ball, the end of the movable member 12 facing away from the guide member 9 is fixedly connected to the drill bit 3, the other end of the movable member 12 is fixedly connected to a fixed block 13 with a through groove, the interior of the through groove is equipped with a constrained gear 14 with a gear condition 104 through a damping shaft, a driven gear 16 is installed inside the movable member 12, and the driven gear 16 and the constraint gear 14 are connected by a long rod, the surface of the driven gear 16 is meshed with two splice racks 15 that match the constraint grooves, and one side surface of the splice block 105 is connected to the gear condition 104.

[0035] There is a gap between the end of the drill bit 3 close to the drill collar 1 and the end of the threaded member 11 , and the end of the threaded member 11 is connected to the surface of the movable member 12 through an elastic filter cloth.

[0036] When the two gear members 104 are close to each other, they mesh with the constraint gear 14 , and the constraint gear 14 drives the driven gear 16 to rotate, and the driven gear 16 drives the two plug-in racks 15 to be plugged into the constraint grooves.

[0037] Different from the first embodiment, in the first embodiment, the drill bit 3 and the drill collar 1 are arranged on the same vertical axis. When the drill is stuck and the force of the drill is large, which makes the reverse rotation not feasible, the present embodiment can be used to adjust the connection between the drill bit 3 and the drill collar 1 so that the drill bit 3 and the drill collar 1 are adjusted at the corresponding angle to get out of the stuck state.

[0038] Specifically, when the plug-in block 105 in the plug-in unit 10 is plugged into the through groove, as the gear condition 104 gradually approaches the constraint gear 14, the two originally in a separated state can gradually become a meshing connection state, and then as the gear condition 104 falls, the constraint gear 14 is driven to rotate, and the driven gear 16 is driven to rotate synchronously under the action of the long rod, so that the plug-in rack 15 can extend out of the inside of the movable part 12 and be plugged into the inside of the constraint groove, realizing the constraint connection between the movable part 12 and the threaded part 11, thereby making the drill bit 3 and the threaded part 11 and the drill collar 1 coaxially arranged (such as Fig.12 shown).

[0039] When it is necessary to adjust the connection mode between the drill bit 3 and the drill collar 1, the plug-in unit 10 can be called back first, and the plug-in rack 15 can be driven to retract into the inside of the movable part 12 through the meshing action between the gears. At this time, the tooth condition 104 partially remains in the through groove, retaining the restraining effect with the fixed block 13. At this time, the drill bit 3 and the movable part 12 are in a state of active connection with the threaded part 11 through the movable ball (because there is a gap between the inner wall of the threaded part 11 and the outer surface of the movable part 12, and the position of the movable ball is near the end of the threaded part 11). At this time, the drill collar 1 can be driven to reverse direction through the guiding action, so as to achieve the angle adjustment of the drill collar 1 and the threaded part 11 relative to the drill bit 3 (because the drill bit 3 is in a stuck drill state at this time, the rotation of the drill collar 1 stops, and the drill bit 3 and the drill collar 1 are in a relatively static state. As the angle of the drill collar 1 is adjusted, the installation angle of the drill collar 1 and the drill bit 3 is adjusted under the action of the movable ball and the gap), so as to facilitate subsequent pulling to get out of the stuck drill state.

[0040] The filter cloth is used to prevent foreign matter from entering the gap between the threaded member 11 and the movable member 12, and ensure that there is no solid obstruction in the gap.

[0041] In summary, the drill bit 3 and the drill collar 1 are radially connected through the two plug-in units 10 and the fixed block 13. In this way, when the feasibility of the reverse rotation to release the stuck drill state is low (that is, there is a risk of causing the drill bit 3 to be separated from the drill collar 1), the resistance encountered during the reverse rotation can serve as a prompt. In addition, through the cooperation of the driving motor 6 and the rotary joint at the dual output ends, when the No. 2 tube 8 rotates to achieve the alternate extension of the plunger 92, the cleaning rod 41 can be driven to continuously clean the filter 4. Finally, through the threaded part 11, the movable part 12, the driven gear 16, the gear condition 104 and the constraint gear 14, the auxiliary drill bit 3 can adjust the connection mode between the drill bit 3 and the drill collar 1 when the drill is stuck, thereby facilitating the multi-angle release operation of the drill.

[0042] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An intelligent rotary steerable drilling device, comprising a drill collar (1), a centralizer (2) being mounted on one end surface of the drill collar (1), and a first pipe body (7) penetrating through one end of the drill collar (1), characterized in that: The end of the first pipe body (7) is connected to the second pipe body (8) via a rotary joint, and a flow guide (9) is installed inside the drill collar (1); The inner wall of the other end of the drill collar (1) is provided with two symmetrically arranged plug-in units (10), and the plug-in unit (10) comprises a block (101), a movable frame (103) is hingedly connected to the surface of the block (101), a micro electric extension rod (102) is connected to the inner side of the movable frame (103), a plug-in block (105) is hingedly connected to the rear end of the movable frame (103), and a toothed condition (104) is connected to one side surface of the plug-in block (105); The other end of the drill collar (1) is internally threadedly connected to a threaded member (11) having two point-symmetrically arranged constraint grooves, the threaded member (11) is internally connected to a movable member (12) via a movable ball, the end of the movable member (12) facing away from the guide member (9) is fixedly connected to a drill bit (3), the other end of the movable member (12) is fixedly connected to a fixed block (13) having a through groove, the through groove is internally mounted with a gear (14) constrained by a gear condition (104) via a damping shaft, the movable member (12) is internally mounted with a driven gear (16), and the driven gear (16) is connected to the constraint gear (14) via a long rod, and the surface of the driven gear (16) is meshingly connected to two splice racks (15) that match the constraint grooves.

2. The intelligent rotary steerable drilling device according to claim 1, characterized in that: A driving motor (6) is installed on the inner wall of the drill collar (1), and the driving motor (6) has two output ends. Both output ends of the driving motor (6) are connected to a transmission unit (5). A plurality of flow guide tubes (91) are installed through the inner wall of the flow guide member (9), and the tail ends of the flow guide tubes (91) extend to the outer surface of the drill collar (1). A plunger (92) is slidably connected to the inner wall of the flow guide tube (91). A liquid outlet with a diameter not greater than the inner diameter of the flow guide tube (91) is provided on the tail end surface of the second tube body (8), and the tail end of the second tube body (8) is rotatably connected to the inside of the flow guide member (9).

3. The intelligent rotary steerable drilling device according to claim 2, characterized in that: The transmission unit (5) comprises a first gear (51) and a second gear (52) meshing with the first gear (51), wherein the two first gears (51) are respectively connected to two output ends of the driving motor (6), and the two second gears (52) are respectively sleeved on the surfaces of the first tube body (7) and the second tube body (8).

4. The intelligent rotary steerable drilling device according to claim 3, characterized in that: The inner wall of one end of the first tube body (7) facing away from the second tube body (8) is fixedly connected with a filter screen (4) and a bracket, and the bracket is located on a side of the filter screen (4) close to the second tube body (8), and the surface of the bracket is rotatably connected to a rod body extending to the outside of the filter screen (4), and the surface of the rod body is connected to a cleaning rod (41) that fits the outer surface of the filter screen (4).

5. The intelligent rotary steerable drilling device according to claim 1, characterized in that: In the initial state, the vertical distance between the two plug-in blocks (105) is greater than the height of the fixed block (13), and in the initial state, the ends of the two plug-in racks (15) facing away from the driven gear (16) do not protrude from the surface of the movable part (12).

6. The intelligent rotary steerable drilling device according to claim 1, characterized in that: When the two toothed racks (104) are close to each other, they mesh with the constraint gear (14), the constraint gear (14) drives the driven gear (16) to rotate, and the driven gear (16) drives the two plug-in racks (15) to be plugged into the constraint groove.

7. The intelligent rotary steerable drilling device according to claim 1, characterized in that: An integrated control board is installed inside the drill collar (1), and an attitude measurement sensor and an azimuth gamma sensor are installed on the integrated control board for detecting the tilt attitude information of the drill bit (3).

8. The intelligent rotary steerable drilling device according to claim 1, characterized in that: When the fixing block (13) is connected to the drill collar (1) via the threaded member (11), the through groove in the fixing block (13) coincides with the projection of the plug-in block (105) in the vertical direction.

9. The intelligent rotary steerable drilling device according to claim 1, characterized in that: There is a gap between one end of the drill bit (3) close to the drill collar (1) and the end of the threaded member (11), and the end of the threaded member (11) is connected to the surface of the movable member (12) via an elastic filter cloth.

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