A simulation test bench for dynamically pointing a rotary steerable tool

Abstract

This invention relates to a simulation test bench for a dynamic directional rotary steering tool, comprising a rotary drive system, a clamping system, a loading system, and a displacement monitoring system mounted on a bench base. The rotary drive system is used to position the dynamic directional rotary steering tool under test in either a directional build-up or stabilization state. The clamping system is used to limit the directional steering tool axially and radially. Under loading conditions, the loading system is connected to the guide shaft of the rotary steering tool, and is used to apply drilling pressure and torque to the guide shaft. Under unloading conditions (with the loading system removed), the guide shaft of the rotary steering tool is connected to the drill bit, and the displacement monitoring system is used to measure the displacement of the drill bit. This invention can simulate the directional build-up and stabilization operations of a dynamic directional rotary steering tool under loading, unloading, and different well inclination angles.

Description

Technical Field

[0001] This invention belongs to the field of oil drilling technology, specifically relating to a simulation test bench for a dynamic directional rotary guide tool. Background Technology

[0002] Existing technology discloses a dynamic directional rotary steerable drilling tool test bench, which consists of four main parts: a frame, a rotating device, a clamping device, and a loading device. It can simulate the guiding process of a directional rotary steerable drilling tool under actual well conditions. However, it cannot meet the requirements for simulating the motion state and monitoring the dynamic parameters of the dynamic directional rotary steerable tool during directional drilling and stabilization operations under various loads (drilling pressure, torque), nor can it simulate specific well inclination angles. Furthermore, existing dynamic directional rotary steerable tools suffer from dynamic imbalance during operation, and currently, no test device has been found to evaluate the dynamic imbalance response of dynamic directional rotary steerable tools during directional drilling and stabilization operations. Summary of the Invention

[0003] To address all or part of the aforementioned problems, the present invention aims to provide a simulation test bench for a dynamic directional rotary steering tool. This simulation test bench can simulate the directional steering tool's directional and stabilization operation states under loading, unloading, and different well inclination angle conditions.

[0004] According to one aspect of the present invention, a simulation test bench for a dynamic directional rotary steering tool is provided, comprising a rotary drive system, a clamping system, a loading system, and a displacement monitoring system disposed on a bench base. The rotary drive system is used to position the dynamic directional rotary steering tool under test in a directional build-up state or a stable inclination state. The clamping system is used to limit the rotary steering tool axially and radially. Under loading conditions, the loading system is connected to the guide shaft of the rotary steering tool, and the loading system is used to apply drilling pressure and torque to the guide shaft of the rotary steering tool under loading conditions. Under non-loading conditions with the loading system removed, the guide shaft of the rotary steering tool is connected to the drill bit, and the displacement monitoring system is used to measure the displacement of the drill bit. The rotary drive system, loading system, and displacement monitoring system are all connected to a data acquisition system. The tilt angle of the bench base is adjustable to allow the rotary steering tool to be positioned at different well inclinations.

[0005] Furthermore, the test bench base includes an upper base and a lower base. The rotary drive system, clamping system, loading system, and displacement monitoring system are all mounted on the upper base. The lower base is fixed to the ground. The right end of the upper base is connected to the right end of the lower base by a connecting pin. The upper base is configured to rotate around the connecting pin as a pivot, so that the upper base is at different tilt angles, thereby placing the rotary guide tool at different well inclinations.

[0006] Furthermore, the middle part of the upper base is pin-connected to one end of the first support rod, and the other end of the first support rod is pin-connected to the first slider. The lower base is provided with a first slide rail, which cooperates with the first slider. The first slider can be fixed at different positions on the first slide rail. By adjusting the position of the first slider on the first slide rail, the upper base can be at different tilt angles; and / or...

[0007] The left side of the upper base is pin-connected to one end of the second support rod, and the other end of the second support rod is pin-connected to the second slider. The lower base is provided with a second slide rail, which cooperates with the second slider. The second slider can be fixed at different positions on the second slide rail. By adjusting the position of the second slider on the second slide rail, the upper base can be at different tilt angles.

[0008] Furthermore, both the first slider and the second slider are provided with connecting holes, and both the first slide rail and the second slide rail are provided with a plurality of mating holes along their length direction. The first slider is fixed to the corresponding position of the first slide rail by connecting the connecting holes and any one of the mating holes with a pin, and the second slider is fixed to the corresponding position of the second slide rail by connecting the connecting holes and any one of the mating holes with a pin.

[0009] A support platform and a bottom support frame are fixedly connected to the lower base. The support platform and the bottom support frame are at the same height to support the upper base in a horizontal state. Rubber cushioning pads are provided at the upper ends of the support platform and the bottom support frame.

[0010] Both the first support rod and the second support rod consist of two rods arranged one in front of the other, and a cross brace connects the two first support rods and the two second support rods; the upper base is fixed to the square steel frame.

[0011] Furthermore, the rotary drive system includes a drive unit and a torque motor. The drive unit is used to drive the housing of the rotary guide tool to rotate. The torque motor, which rotates with the housing, is fixedly connected inside the housing of the rotary guide tool. Both the drive unit and the torque motor are connected to the data acquisition system. When the rotational speed of the drive unit and the rotational speed of the torque motor are equal in magnitude and opposite in direction, the rotary guide tool is in a directional tilting state. When the rotational speed of the drive unit and the rotational speed of the torque motor are different in magnitude and opposite in direction, the rotary guide tool is in a stable tilting state.

[0012] Furthermore, the drive unit includes a drill collar drive motor and a first speed and torque sensor fixed on the frame base. The drill collar drive motor is connected to one end of the first speed and torque sensor through a reducer. The other end of the first speed and torque sensor is connected to the housing of the rotary guide tool through an output shaft. The first speed and torque sensor is connected to the data acquisition system. When the speed of the drill collar drive motor and the speed of the torque motor are equal in magnitude and opposite in direction, the rotary guide tool is in a directional tilting state. When the speed of the drill collar drive motor and the speed of the torque motor are different in magnitude and opposite in direction, the rotary guide tool is in a stable tilting state.

[0013] Furthermore, a conductive slip ring is fitted on the output shaft, and the signal line and power supply line of the torque motor are both connected to the slip ring mover of the conductive slip ring. The external signal line and power supply line are both connected to the slip ring stator of the conductive slip ring. A retaining ring is fixed on the platform base, and the retaining ring cooperates with the slip ring stator to keep the slip ring stator stationary.

[0014] The drill collar drive motor is connected to the input end of the reducer, and the output end of the reducer is connected to one end of the first speed and torque sensor through a first coupling; the other end of the first speed and torque sensor is connected to the output shaft through a second coupling; the torque motor is fixed inside the housing of the rotary guide tool through a flange connection; and the drill collar drive motor is fixed on the frame base through a motor mount.

[0015] Furthermore, the clamping system includes a thrust bearing housing and a sliding bearing housing fixed on the frame base. A tapered roller bearing is installed in the thrust bearing housing, and a sliding bearing is installed in the sliding bearing housing. The inner rings of the tapered roller bearing and the sliding bearing are both fitted onto the housing of the rotary guide tool, and the inner ring of the tapered roller bearing engages with a shoulder on the housing of the rotary guide tool.

[0016] A vibration sensor is magnetically connected to the outside of the sliding bearing housing. The vibration sensor is used to monitor the vibration acceleration of the rotary guide tool and is connected to the data acquisition system.

[0017] The thrust bearing housing is fixed to the test bench base via a thrust bearing base, and the sliding bearing housing is fixed to the test bench base via a sliding bearing housing base.

[0018] Furthermore, the loading system includes a loading shaft, a sliding ring, and a hydraulic cylinder. The hydraulic cylinder is fixed on the platform base. The hydraulic rod of the hydraulic cylinder is connected to one end of a tension / compression sensor, and the other end of the tension / compression sensor is connected to a pressurization platform. A self-aligning bearing is fitted on the loading shaft, and a shoulder is provided on the loading shaft to mate with the inner ring of the self-aligning bearing on its right side. The outer ring of the self-aligning bearing is interference-fitted with the sliding ring on its right side. A spherical sliding pair is formed between the pressurization platform and the sliding ring on its left side. Under loading conditions, the loading shaft is connected to the guide shaft of the rotary guide tool on its left side. The drilling pressure generated by the extension of the hydraulic rod of the hydraulic cylinder is transmitted to the rotary guide tool sequentially via the tension / compression sensor, the pressurization platform, the sliding ring, the self-aligning bearing, and the loading shaft. The tension / compression sensor is connected to the data acquisition system.

[0019] Furthermore, the loading system also includes a magnetic powder brake fixed on the platform base. The magnetic powder brake is connected to one end of a second speed and torque sensor, which is connected to one end of a flange shaft. The other end of the flange shaft is connected to the loading shaft via a ball-cage universal coupling. Under loading conditions, the reverse torque output by the magnetic powder brake is transmitted to the guide shaft of the rotary guide tool via the loading shaft. The second speed and torque sensor is connected to the data acquisition system.

[0020] Furthermore, the hydraulic cylinder is fixed on the platform base by a hydraulic cylinder extension end fixing seat and a hydraulic cylinder tail end fixing seat, the pressurization platform is set on the pressurization platform base, and the pressurization platform base is fixed on the platform base;

[0021] The second speed and torque sensor is connected to one end of the flange shaft via a third coupling, and the magnetic powder brake is connected to one end of the second speed and torque sensor via a fourth coupling.

[0022] Furthermore, the displacement monitoring system includes a laser displacement sensor mounting bracket fixed on the test bench base. Three laser displacement sensors are fixed on the laser displacement sensor mounting bracket. In the non-loaded condition where the loading system is removed, the laser displacement sensors are used to measure the displacement of the drill bit. All three laser displacement sensors are connected to the data acquisition system.

[0023] As can be seen from the above technical solution, the simulation test stand for a dynamic directional rotary guide tool provided by the present invention has the following beneficial effects:

[0024] This invention can simulate the directional and stabilizing operation states of a dynamic directional rotary steering tool under loaded, unloaded, and different well inclination angle conditions;

[0025] This invention achieves the purpose of applying drilling pressure and torque to the guide shaft of the rotary guide tool through a loading system, thereby simulating the loading condition; and after removing the loading system, installing the drill bit and displacement monitoring system can simulate the non-loading condition; changing the inclination angle of the upper base can simulate the working conditions of different well inclination angles. Attached Figure Description

[0026] Figure 1 This is a schematic diagram illustrating the simulation of loading conditions using a simulation test bench for a dynamic pointing rotary guide tool according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram illustrating the simulation of an unloaded working condition using a simulation test bench for a dynamic pointing rotary guide tool according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of a rotary drive system according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the clamping system according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the loading system according to an embodiment of the present invention;

[0031] Figure 6 This is a top view of the loading system according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the platform base according to an embodiment of the present invention, in which the upper base is in an inclined state;

[0033] Figure 8 This is a schematic diagram of the platform base according to an embodiment of the present invention, in which the upper base is in a horizontal state;

[0034] Figure 9 This is a schematic diagram of a displacement monitoring system according to an embodiment of the present invention;

[0035] The attached figures are labeled as follows: Rotary drive system 1, drill collar drive motor 11, reducer 12, first coupling 13, first speed and torque sensor 14, second coupling 15, retaining ring 16, output shaft 17, motor base 18, slip ring stator 19, slip ring mover 110, torque motor 111, clamping system 2, thrust bearing housing 21, tapered roller bearing 22, sliding bearing housing 23, thrust seat base 24, sliding bearing housing base 25, vibration sensor 26, rotary guide tool 3, loading system 4, loading shaft 41, self-aligning bearing 42, sliding ring 43, tension and compression sensor 44, hydraulic cylinder 45, third coupling 46, magnetic powder brake 47, pressurization. Platform base 48, pressurizing platform 49, hydraulic cylinder extension end fixing seat 410, ball cage type universal coupling 411, flange shaft 412, hydraulic cylinder tail end fixing seat 413, second speed and torque sensor 414, fourth coupling 415, frame base 5, upper base 51, square steel frame 52, supporting square platform 53, first support rod 54, cross brace 55, well inclination bolt 56, second slider 57, bottom support frame 58, rubber buffer pad 59, lower base 510, connecting pin 511, first slider 512, second support rod 513, displacement monitoring system 6, laser displacement sensor 61, laser displacement sensor mounting bracket 62, data acquisition system 7. Detailed Implementation

[0036] To better understand the purpose, structure, and function of this invention, the following detailed description, in conjunction with the accompanying drawings, provides an experimental simulation platform for a dynamic directional rotary guide tool.

[0037] like Figure 1 , Figure 2 As shown, this invention illustrates a simulation test bench for a dynamic directional rotary steering tool, comprising a rotary drive system 1, a clamping system 2, a loading system 4, and a displacement monitoring system 6 mounted on a bench base 5. The rotary drive system 1 is used to position the rotary steering tool 3 under test in a directional build-up or stabilization state. The clamping system 2 is used to limit the directional steering tool 3 axially and radially. Under loading conditions, the loading system 4 is connected to the guide shaft of the rotary steering tool 3, and is used to apply drilling pressure and torque to the guide shaft of the rotary steering tool 3. Under non-loading conditions, with the loading system 4 removed, the guide shaft of the rotary steering tool 3 is connected to the drill bit, and the displacement monitoring system 6 is used to measure the displacement of the drill bit. The rotary drive system 1, loading system 4, and displacement monitoring system 6 are all connected to a data acquisition system 7. The tilt angle of the bench base 5 is adjustable to allow the rotary steering tool 3 to be positioned at different well inclinations.

[0038] Specifically, the simulation test bench of this invention includes a rotary drive system 1, a clamping system 2, a loading system 4, a bench base 5, and a displacement monitoring system 6. The rotary drive system 1 is used to put the rotary guide tool 3 to be tested into an oriented tilting state or a stable tilting state, so as to simulate the performance of the rotary guide tool 3 in the two states. The clamping system 2 is used to limit the rotary guide tool 3 axially and radially to prevent the rotary guide tool 3 from moving along the axial or radial direction during the simulation.

[0039] This invention can be used to simulate both loaded and unloaded conditions for the rotary steerable tool 3. For the loaded condition, the loading system 4 is connected to the guide shaft of the rotary steerable tool 3. Drilling pressure and torque are applied to the guide shaft of the rotary steerable tool 3 through the loading system 4, and the applied drilling pressure and torque are read by the data acquisition system 7 connected to the loading system 4. For the rotary steerable tool 3 in a directional drilling or stabilizing state, the corresponding parameters of the rotary drive system 1 also need to be read by the data acquisition system 7 to ensure that the rotary steerable tool 3 is in the corresponding state.

[0040] For the unloaded working condition, the loading system 4 is not required to apply drilling pressure and torque. Therefore, the loading system 4 needs to be removed. Then, the guide shaft of the rotary guide tool 3 is connected to the drill bit and the corresponding displacement monitoring system 6 is set up. The displacement of the drill bit can be measured by the displacement monitoring system 6, and the displacement change can be read by the data acquisition system 7 connected to the displacement monitoring system 6. For the rotary guide tool 3 in the directional drilling state or the stabilizing state, the corresponding parameters of the rotary drive system 1 also need to be read by the data acquisition system 7 to ensure that the rotary guide tool 3 is in the corresponding state.

[0041] Among them, such as Figure 7 , Figure 8 As shown, the platform base 5 includes an upper base 51 and a lower base 510. The rotary drive system 1, clamping system 2, loading system 4 and displacement monitoring system 6 are all mounted on the upper base 51. The lower base 510 is fixed to the ground. The right end of the upper base 51 and the right end of the lower base 510 are connected by a connecting pin 511. The upper base 51 is configured to rotate around the connecting pin 511 as a pivot, so that the upper base 51 is at different tilt angles, so that the rotary guide tool 3 is at different well inclinations.

[0042] Specifically, the platform base 5 of this embodiment includes an upper base 51 and a lower base 510. The rotation drive system 1, the clamping system 2, the loading system 4 and the displacement monitoring system 6 are all set on the upper base 51. The upper base 51 is fixed on the square steel frame 52, while the lower base 510 is fixed on the ground.

[0043] Regarding the upper base 51 and the lower base 510, the upper base 51 can rotate around the connecting pin between the upper base 51 and the lower base 510, thereby placing the upper base 51 in an inclined state. Thus, in this embodiment of the invention, the rotary steering tool 3 can be placed in different well inclinations, thereby simulating the rotary steering tool under different well inclinations, such as simulating the loading conditions when the rotary steering tool is in a directional drilling state under different well inclinations.

[0044] The embodiments of the present invention can simulate the directional and stabilization operation states of a dynamic directional rotary steering tool under loaded, unloaded and different well inclination angle conditions.

[0045] The upper base 51 is pin-connected to one end of the first support rod 54 at its middle part, and the other end of the first support rod 54 is pin-connected to the first slider 512. The lower base 510 is provided with a first slide rail, which cooperates with the first slider 512. The first slider 512 can be fixed at different positions on the first slide rail. By adjusting the position of the first slider 512 on the first slide rail, the upper base 51 can be at different tilt angles.

[0046] In this embodiment of the invention, by adjusting the position of the first slider 512 on the first slide rail and fixing the first slider 512 at that position on the first slide rail, the upper base 51 is rotated to a certain angle around the connecting pin, thereby allowing the rotary guide tool 3 to be in different well inclinations.

[0047] As an alternative, the left side of the upper base 51 is pin-connected to one end of the second support rod 513, and the other end of the second support rod 513 is pin-connected to the second slider 57. The lower base 510 is provided with a second slide rail, which cooperates with the second slider 57. The second slider 57 can be fixed at different positions on the second slide rail. By adjusting the position of the second slider 57 on the second slide rail, the upper base 51 can be at different tilt angles.

[0048] In this embodiment, the second slider 57 and the second slide rail are also configured to allow the upper base 51 to rotate to a certain angle around the connecting pin, thereby allowing the rotary guide tool 3 to be positioned at different well inclinations.

[0049] As an alternative, a first slider 512 and a first slide rail, as well as a second slider 57 and a second slide rail, can be simultaneously provided. In this solution, when it is necessary to adjust the tilt angle of the upper base 51, firstly, the first slider 512 is positioned so that it can move on the first slide rail, and the second slider 57 is positioned so that it can move on the second slide rail. Then, the positions of the first slider 512 on the first slide rail and / or the second slider 57 on the second slide rail are adjusted. Finally, the first slider 512 and the second slider 57 are fixed.

[0050] For a scheme that simultaneously sets a first slider 512 and a first slide rail, and a second slider 57 and a second slide rail, both the first slider 512 and the second slider 57 are provided with connecting holes, and both the first slide rail and the second slide rail are provided with several mating holes along their length direction. The first slider 512 is fixed to the corresponding position of the first slide rail by connecting any one of the mating holes and the connecting hole through a pin, and the second slider 57 is fixed to the corresponding position of the second slide rail by connecting any one of the mating holes and the connecting hole through a pin.

[0051] For the scheme that simultaneously sets up a first slider 512 and a first slide rail, and a second slider 57 and a second slide rail, both the first support rod 54 and the second support rod 513 consist of two rods arranged one in front of the other. A cross brace 55 and a well-angle bolt 56 connect the two first support rods 54 and the two second support rods 513. The purpose of setting the cross brace 55 and the well-angle bolt 56 here is to increase strength.

[0052] The lower base 510 is fixedly connected to a support platform 53 and a bottom support frame 58. The support platform 53 and the bottom support frame 58 are at the same height to support the upper base 51 which is in a horizontal state. Rubber buffer pads 59 are provided at the upper ends of both the support platform 53 and the bottom support frame 58.

[0053] The supporting platform 53 and the bottom supporting frame 58 are used to support the upper base 51 when it is in a horizontal position, that is, to support the upper base 51 with an inclination angle of 0 degrees. The rubber buffer pad 59 is provided to provide a cushioning effect.

[0054] For rotary drive system 1, such as Figure 3 As shown, it includes a drive unit and a torque motor 111. The drive unit is used to drive the housing of the rotary guide tool 3 to rotate. The torque motor 111, which rotates with the housing, is fixedly connected inside the housing of the rotary guide tool 3. Both the drive unit and the torque motor 111 are connected to the data acquisition system 7. When the speed of the drive unit and the speed of the torque motor 111 are equal in magnitude and opposite in direction, the rotary guide tool 3 is in a directional tilting state. When the speed of the drive unit and the speed of the torque motor 111 are different in magnitude and opposite in direction, the rotary guide tool 3 is in a stable tilting state.

[0055] The drive unit includes a drill collar drive motor 11 and a first speed and torque sensor 14 fixed on the platform base 5. The drill collar drive motor 11 is connected to one end of the first speed and torque sensor 14 through a reducer 12. The other end of the first speed and torque sensor 14 is connected to the housing of the rotary guide tool 3 through an output shaft 17. The first speed and torque sensor 14 is connected to the data acquisition system 7. When the speed of the drill collar drive motor 11 and the speed of the torque motor 111 are equal in magnitude and opposite in direction, the rotary guide tool 3 is in a directional tilting state. When the speed of the drill collar drive motor 11 and the speed of the torque motor 111 are different in magnitude and opposite in direction, the rotary guide tool 3 is in a stable tilting state.

[0056] The output shaft 17 is fitted with a conductive slip ring. The signal line and power supply line of the torque motor 111 are both connected to the slip ring mover 110 of the conductive slip ring, and the external signal line and power supply line are both connected to the slip ring stator 19 of the conductive slip ring.

[0057] The conductive slip ring in this embodiment establishes a signal transmission circuit and a power supply circuit between the moving and stationary devices, and ensures the normal loading of the rotational speed and torque on the housing of the rotary guide tool 3. The first speed and torque sensor 14 is used to measure the speed and torque loaded on the housing of the rotary guide tool 3, and the data acquisition system 7 is used to read the loaded speed and torque.

[0058] Among them, a retaining ring 16 is fixed on the platform base 5. The retaining ring 16 cooperates with the slip ring stator 19 to keep the slip ring stator 19 stationary.

[0059] The retaining ring 16 is fixed to the upper base 51 of the platform base 5 by bolts. The retaining ring 16 cooperates with the conductive slip ring stator 19 to prevent the slip ring stator 19 of the conductive slip ring from rotating, so as to keep the slip ring stator 19 stationary.

[0060] The drill collar drive motor 11 is connected to the input end of the reducer 12, and the output end of the reducer 12 is connected to one end of the first speed and torque sensor 14 through the first coupling 13; the other end of the first speed and torque sensor 14 is connected to the output shaft 17 through the second coupling 15; the torque motor 111 is fixed inside the housing of the rotary guide tool 3 through a flange connection; the drill collar drive motor 11 is fixed on the upper base 51 of the platform base 5 through the motor base 18.

[0061] For clamping system 2, such as Figure 4As shown, it includes a thrust bearing housing 21 and a sliding bearing housing 23 fixed on the platform base 5. A tapered roller bearing 22 is installed in the thrust bearing housing 21, and a sliding bearing is installed in the sliding bearing housing 23. The inner rings of the tapered roller bearing 22 and the sliding bearing are both fitted onto the housing of the rotary guide tool 3, and the inner rings of the tapered roller bearing 22 and the shaft shoulder on the housing of the rotary guide tool 3 are engaged.

[0062] Specifically, the thrust bearing housing 21 is fixed to the upper base 51 of the test bench base 5 via the thrust seat base 24, and the sliding bearing housing 23 is fixed to the upper base 51 of the test bench base 5 via the sliding bearing housing base 25. A tapered roller bearing 22 is fitted inside the thrust bearing housing 21 with a transition fit, serving to support the housing of the rotary guide tool 3. The inner ring of the tapered roller bearing 22 engages with the shoulder on the housing of the rotary guide tool 3 to counteract drilling pressure. The sliding bearing housing 23 contains a double-jaw sliding bearing, and the sliding bearing housing 23 is fitted with the housing of the rotary guide tool with a transition fit.

[0063] Among them, a vibration sensor 26 is magnetically connected to the outside of the sliding bearing seat 23. The vibration sensor 26 is used to monitor the vibration acceleration of the rotary guide tool 3. The vibration sensor 26 is connected to the data acquisition system 7.

[0064] For loading system 4, such as Figure 5 , Figure 6 As shown, it includes a loading shaft 41, a sliding ring 43, and a hydraulic cylinder 45. The hydraulic cylinder 45 is fixed on the platform base 5. The hydraulic rod of the hydraulic cylinder 45 is connected to one end of the tension / compression sensor 44, and the other end of the tension / compression sensor 44 is connected to the pressurization platform 49. A self-aligning bearing 42 is sleeved on the loading shaft 41. The loading shaft 41 is provided with a shoulder that mates with the inner ring of the self-aligning bearing 42 on its right side. The outer ring of the self-aligning bearing 42 is interference-fitted with the sliding ring 43 on its right side. A spherical sliding pair is formed between the pressurization platform 49 and the sliding ring 43 on its left side. Under loading conditions, the loading shaft 41 is connected to the guide shaft of the rotary guide tool 3 on its left side. The drilling pressure generated by the extension of the hydraulic rod of the hydraulic cylinder 45 is transmitted to the rotary guide tool 3 in sequence through the tension / compression sensor 44, the pressurization platform 49, the sliding ring 43, the self-aligning bearing 42, and the loading shaft 41. The tension / compression sensor 44 is connected to the data acquisition system 7.

[0065] Specifically, the hydraulic cylinder 45 is fixed to the upper base 51 of the test bench base 5 via the hydraulic cylinder extension end fixing seat 410 and the hydraulic cylinder tail end fixing seat 413. The pressurizing platform 49 is set on the pressurizing platform base 48, and the pressurizing platform base 48 is fixed to the upper base 51 of the test bench base 5. The two ends of the tension and compression sensor 44 are respectively connected to the hydraulic rod of the hydraulic cylinder 45 and the pressurizing platform 49. The pressurizing platform 49 and the sliding ring 43 form a spherical sliding pair. The self-aligning bearing 42 and the sliding ring 43 are interference fit. The self-aligning bearing 42 and the loading shaft 41 are transition fit. The loading shaft 41 is connected to the guide shaft of the rotary guide tool 3.

[0066] In this system, the hydraulic rod of the hydraulic cylinder 45 extends to generate drilling pressure. This drilling pressure is transmitted to the rotary guide tool 3 via the tension / compression sensor 44, the pressure platform 49, the sliding ring 43, the self-aligning bearing 42, and the loading shaft 41, ultimately achieving the purpose of applying drilling pressure to the guide shaft of the rotary guide tool 3. The tension / compression sensor 44 monitors changes in drilling pressure in real time to ensure stable output from the hydraulic cylinder 45. The self-aligning bearing 42, in conjunction with the pressure platform 49, forms a spherical sliding pair between the pressure platform 49 and the sliding ring 43, thereby compensating for radial and axial displacements generated during the slant-adjusting operation of the rotary guide tool, ensuring the normal loading of drilling pressure.

[0067] In a specific implementation, for example, two hydraulic cylinders 45 are configured. The two hydraulic cylinders work together to apply drilling pressure to the guide shaft of the rotary guide tool 3. Each hydraulic cylinder 45 is connected to a tension / compression sensor 44. The two tension / compression sensors 44 cooperate with the same pressurization platform 49. The tension / compression sensors 44 can also prevent the output drilling pressure of the two hydraulic cylinders 45 from being too different, thus avoiding lateral loading. In a specific implementation, each hydraulic cylinder 45 is fixed to the platform base 5 by a hydraulic cylinder extension end fixing seat 410 and a hydraulic cylinder tail end fixing seat 413.

[0068] The loading system 4 also includes a magnetic powder brake 47 fixed on the platform base 5. The magnetic powder brake 47 is connected to one end of the second speed and torque sensor 414. The second speed and torque sensor 414 is connected to one end of the flange shaft 412. The other end of the flange shaft 412 is connected to the loading shaft 41 through a ball cage universal coupling 411. Under loading conditions, the reverse torque output by the magnetic powder brake 47 is transmitted to the guide shaft of the rotary guide tool 3 through the loading shaft 41. The second speed and torque sensor 414 is connected to the data acquisition system 7.

[0069] Specifically, the second speed and torque sensor 414 is connected to one end of the flange shaft 412 via the third coupling 46, and the magnetic powder brake 47 is connected to one end of the second speed and torque sensor 414 via the fourth coupling 415.

[0070] The flange shaft 412 has a flange at one end, which is bolted to the ball cage universal coupling 411. The other end of the flange shaft 412 has a keyway, which is connected to the third coupling 46 via a key. The other end of the third coupling is connected to the output end of the second speed and torque sensor. The hydraulic cylinder 45 is mounted via the hydraulic cylinder extension end fixing seat 410 and the hydraulic cylinder tail end fixing seat 413. The entire hydraulic cylinder does not contact the rotating structure. The hydraulic rod of the hydraulic cylinder 45 is threadedly connected to the tension and pressure sensor 44. The other end of the tension and pressure sensor 44 is connected to the pressurization platform 49.

[0071] The magnetic powder brake 47, fourth coupling 415, second speed and torque sensor 414, third coupling 46, flange shaft 412, ball cage universal coupling 411, and loading shaft 41 are sequentially connected to form the torque loading section. The magnetic powder brake 47 outputs reverse torque, which is transmitted to the guide shaft of the rotary guide tool 3 via the loading shaft 41, thereby achieving torque loading. The second speed and torque sensor 414 is used to monitor the loaded torque and speed. The ball cage universal coupling 411 is used to compensate for the radial and axial displacements generated during the slanted operation of the rotary guide tool, ensuring normal torque loading.

[0072] Among them, such as Figure 9 As shown, the displacement monitoring system 6 includes a laser displacement sensor mounting bracket 62 fixed on the test bench base 5. Three laser displacement sensors 61 are fixed on the laser displacement sensor mounting bracket 62. In the non-loaded condition where the loading system 4 is removed, the laser displacement sensors 61 are used to measure the displacement of the drill bit. All three laser displacement sensors 61 are connected to the data acquisition system 7.

[0073] Specifically, the displacement monitoring system monitors the displacement of the drill bit in three directions using three laser displacement sensors 61. The laser displacement sensors are bolted to a laser displacement sensor mounting bracket 62, which is then bolted to the upper base 51 of the platform base 5. All three laser displacement sensors 61 are connected to a data acquisition system 7 to acquire their displacement data.

[0074] In this embodiment of the invention, drilling pressure and torque are applied to the guide shaft of the rotary guide tool 3 using a hydraulic cylinder and a magnetic powder brake, thereby simulating the loading condition. A spherical sliding pair is formed between the pressure platform 49 and the sliding ring 43 through the self-aligning bearing 42 and the pressure platform 49. The radial and axial displacements generated during the stabilization operation of the rotary guide tool are compensated by the ball cage universal coupling 411, ensuring the normal loading of drilling pressure and torque. After removing the loading system 4, the drill bit and displacement monitoring system 6 can be installed to simulate the non-loading condition. By changing the position of the first slider 512 on the first slide rail and the position of the second slider 57 on the second slide rail, the simulation of different well inclination angles can be achieved.

[0075] In this embodiment of the invention, the data acquisition system 7 can acquire the rotational speed and torque measured by the first rotational speed and torque sensor 14 on the housing of the rotary guide tool 3, the torque and rotational speed measured by the second rotational speed and torque sensor 414 on the guide shaft of the rotary guide tool 3, the tension or pressure measured by the tension / compression sensor 44 on the guide shaft of the rotary guide tool 3, the laser displacement data of the three laser displacement sensors 61, the vibration acceleration of the rotary guide tool 3 measured by the vibration sensor 26, and the rotational speed of the torque motor 111 and the rotational speed of the drill collar drive motor 11; thereby... The operating state (directional tilting or stabilizing) of the rotary guide tool 3 can be determined based on the rotational speed of the torque motor 111 and the rotational speed of the drill collar drive motor 11. Based on vibration acceleration and laser displacement data, the dynamic imbalance response of the rotary guide tool can be evaluated and the tool's dynamic balancing can be guided to reduce vibration and improve the reliability of the rotary guide tool. Based on torque and rotational speed data, the control strategy of the rotary guide tool can be optimized to improve the pointing response speed and robustness. Based on tension or compression, it is convenient to cancel the tension or compression during the subsequent tool string connection process, which facilitates the connection of subsequent tool strings.

[0076] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0077] Furthermore, the terms "a," "two," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0078] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A simulation test stand for a dynamic pointing rotary guide tool, characterized in that, The test setup includes a rotary drive system (1), a clamping system (2), a loading system (4), and a displacement monitoring system (6) mounted on a test bench base (5). The rotary drive system (1) is used to position the dynamic directional rotary guide tool (3) under test in a directional tilting or stable tilting state. The clamping system (2) is used to limit the axial and radial movement of the rotary guide tool (3). Under loading conditions, the loading system (4) is connected to the guide shaft of the rotary guide tool (3). The rotary steering tool (3) is used to apply drilling pressure and torque to the guide shaft under loading conditions; under non-loading conditions where the loading system (4) is removed, the guide shaft of the rotary steering tool (3) is connected to the drill bit, and the displacement monitoring system (6) is used to measure the displacement of the drill bit; the rotary drive system (1), the loading system (4) and the displacement monitoring system (6) are all connected to the data acquisition system (7); the tilt angle of the platform base (5) is adjustable so that the rotary steering tool (3) is in different well inclinations; The loading system (4) includes a loading shaft (41), a sliding ring (43), and a hydraulic cylinder (45). The hydraulic cylinder (45) is fixed on the platform base (5). The hydraulic rod of the hydraulic cylinder (45) is connected to one end of a tension / compression sensor (44), and the other end of the tension / compression sensor (44) is connected to a pressurizing platform (49). A self-aligning bearing (42) is sleeved on the loading shaft (41). The loading shaft (41) has a shoulder that mates with the inner ring of the self-aligning bearing (42) on its right side. The outer ring of the self-aligning bearing (42) is interference-fitted with the sliding ring (43) on its right side. A spherical sliding pair is formed between the pressurizing platform (49) and the sliding ring (43) on its left side. Under loading conditions, the loading shaft (41) is connected to the guide shaft of the rotary guide tool (3) on its left side. The drilling pressure generated by the extension of the hydraulic rod of the hydraulic cylinder (45) is transmitted through the tension / compression sensor. (44), pressurizing platform (49), sliding ring (43), self-aligning bearing (42) and loading shaft (41) are sequentially transmitted to the rotary guide tool (3), and the tension and pressure sensor (44) is connected to the data acquisition system (7); the loading system (4) also includes a magnetic powder brake (47) fixed on the frame base (5), the magnetic powder brake (47) is connected to one end of the second speed and torque sensor (414), the second speed and torque sensor (414) is connected to one end of the flange shaft (412), and the other end of the flange shaft (412) is connected to the loading shaft (41) through a ball cage universal coupling (411). Under the loading condition, the reverse torque output by the magnetic powder brake (47) is transmitted to the guide shaft of the rotary guide tool (3) through the loading shaft (41), and the second speed and torque sensor (414) is connected to the data acquisition system (7).

2. The simulation test stand for a dynamic pointing rotary guide tool according to claim 1, characterized in that, The platform base (5) includes an upper base (51) and a lower base (510). The rotary drive system (1), clamping system (2), loading system (4) and displacement monitoring system (6) are all mounted on the upper base (51). The lower base (510) is fixed on the ground. The right end of the upper base (51) is connected to the right end of the lower base (510) by a connecting pin (511). The upper base (51) is configured to rotate around the connecting pin (511) as a pivot, so that the upper base (51) is at different tilt angles, so that the rotary guide tool (3) is at different well inclinations.

3. The simulation test stand for a dynamic pointing rotary guide tool according to claim 2, characterized in that, The upper base (51) is pinned to one end of the first support rod (54) at its middle part, and the other end of the first support rod (54) is pinned to the first slider (512). The lower base (510) is provided with a first slide rail, which cooperates with the first slider (512). The first slider (512) can be fixed at different positions on the first slide rail. By adjusting the position of the first slider (512) on the first slide rail, the upper base (51) can be at different tilt angles; and / or, The left side of the upper base (51) is pin-connected to one end of the second support rod (513), and the other end of the second support rod (513) is pin-connected to the second slider (57). The lower base (510) is provided with a second slide rail, which cooperates with the second slider (57). The second slider (57) can be fixed at different positions on the second slide rail. By adjusting the position of the second slider (57) on the second slide rail, the upper base (51) can be at different tilt angles.

4. The simulation test stand for a dynamic pointing rotary guide tool according to claim 3, characterized in that, Both the first slider (512) and the second slider (57) are provided with connecting holes. Both the first slide rail and the second slide rail are provided with a plurality of mating holes along their length direction. The first slider (512) is fixed to the corresponding position of the first slide rail by connecting the connecting holes and any one of the mating holes through a pin. The second slider (57) is fixed to the corresponding position of the second slide rail by connecting the connecting holes and any one of the mating holes through a pin. A support platform (53) and a bottom support frame (58) are fixedly connected to the lower base (510). The support platform (53) and the bottom support frame (58) are at the same height to support the upper base (51) which is in a horizontal state. A rubber buffer pad (59) is provided at the upper end of both the support platform (53) and the bottom support frame (58). The first support rod (54) and the second support rod (513) each include two rods arranged in front and behind each other. A cross brace (55) is connected between the two first support rods (54) and between the two second support rods (513). The upper base (51) is fixed on the square steel frame (52).

5. The simulation test stand for a dynamic pointing rotary guide tool according to claim 1, characterized in that, The rotary drive system (1) includes a drive unit and a torque motor (111). The drive unit is used to drive the outer shell of the rotary guide tool (3) to rotate. The torque motor (111) that rotates with the outer shell is fixedly connected inside the outer shell of the rotary guide tool (3). The drive unit and the torque motor (111) are both connected to the data acquisition system (7). When the speed of the drive unit and the speed of the torque motor (111) are equal in magnitude and opposite in direction, the rotary guide tool (3) is in a directional tilting state. When the speed of the drive unit and the speed of the torque motor (111) are different in magnitude and opposite in direction, the rotary guide tool (3) is in a stable tilting state.

6. The simulation test stand for a dynamic pointing rotary guide tool according to claim 5, characterized in that, The drive unit includes a drill collar drive motor (11) and a first speed and torque sensor (14) fixed on the frame base (5). The drill collar drive motor (11) is connected to one end of the first speed and torque sensor (14) through a reducer (12). The other end of the first speed and torque sensor (14) is connected to the housing of the rotary guide tool (3) through an output shaft (17). The first speed and torque sensor (14) is connected to the data acquisition system (7). When the speed of the drill collar drive motor (11) and the speed of the torque motor (111) are equal in magnitude and opposite in direction, the rotary guide tool (3) is in a directional tilting state. When the speed of the drill collar drive motor (11) and the speed of the torque motor (111) are different in magnitude and opposite in direction, the rotary guide tool (3) is in a stable tilting state.

7. The simulation test stand for a dynamic pointing rotary guide tool according to claim 6, characterized in that, A conductive slip ring is fitted on the output shaft (17). The signal line and power supply line of the torque motor (111) are both connected to the slip ring mover (110) of the conductive slip ring. The external signal line and power supply line are both connected to the slip ring stator (19) of the conductive slip ring. A retaining ring (16) is fixed on the platform base (5). The retaining ring (16) cooperates with the slip ring stator (19) to keep the slip ring stator (19) stationary. The drill collar drive motor (11) is connected to the input end of the reducer (12), and the output end of the reducer (12) is connected to one end of the first speed and torque sensor (14) through the first coupling (13); the other end of the first speed and torque sensor (14) is connected to the output shaft (17) through the second coupling (15); the torque motor (111) is fixed inside the housing of the rotary guide tool (3) through a flange connection; the drill collar drive motor (11) is fixed on the frame base (5) through the motor seat (18).

8. The simulation test stand for a dynamic pointing rotary guide tool according to claim 1, characterized in that, The clamping system (2) includes a thrust bearing housing (21) and a sliding bearing housing (23) fixed on the frame base (5). A tapered roller bearing (22) is installed in the thrust bearing housing (21), and a sliding bearing is installed in the sliding bearing housing (23). The inner rings of the tapered roller bearing (22) and the inner rings of the sliding bearing are both fitted on the outer shell of the rotary guide tool (3), and the inner rings of the tapered roller bearing (22) and the shoulder on the outer shell of the rotary guide tool (3) are engaged. A vibration sensor (26) is magnetically connected to the outside of the sliding bearing seat (23). The vibration sensor (26) is used to monitor the vibration acceleration of the rotary guide tool (3). The vibration sensor (26) is connected to the data acquisition system (7). The thrust bearing housing (21) is fixed on the test bench base (5) by the thrust bearing base (24), and the sliding bearing housing (23) is fixed on the test bench base (5) by the sliding bearing housing base (25).

9. The simulation test stand for a dynamic pointing rotary guide tool according to claim 1, characterized in that, The hydraulic cylinder (45) is fixed on the platform base (5) by the hydraulic cylinder extension end fixing seat (410) and the hydraulic cylinder tail end fixing seat (413). The pressurizing platform (49) is set on the pressurizing platform base (48), and the pressurizing platform base (48) is fixed on the platform base (5). The second speed and torque sensor (414) is connected to one end of the flange shaft (412) via a third coupling (46), and the magnetic powder brake (47) is connected to one end of the second speed and torque sensor (414) via a fourth coupling (415).

10. The simulation test stand for a dynamic pointing rotary guide tool according to claim 1, characterized in that, The displacement monitoring system (6) includes a laser displacement sensor mounting bracket (62) fixed on the platform base (5). Three laser displacement sensors (61) are fixed on the laser displacement sensor mounting bracket (62). In the non-loaded condition when the loading system (4) is removed, the laser displacement sensors (61) are used to measure the displacement of the drill bit. All three laser displacement sensors (61) are connected to the data acquisition system (7).

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