Rotary guide regulator

Abstract

The invention relates to a rotary guide regulator. Comprising a shell assembly, a flow guide channel located in the shell assembly, a turbine power generation module and a servo motor module which are arranged in the shell assembly, and a connecting base arranged in the shell assembly and connected with the servo motor module. The hydraulic damping connecting piece is arranged on the connecting base, the drill bit connecting hole is formed in the end, away from the connecting base, of the hydraulic damping connecting piece, the turbine power generation module is electrically connected with the servo motor module, and the hydraulic damping connecting piece is connected with the servo motor module. The servo motor module is used for driving the hydraulic damping connecting piece to rotate and driving the interior of the hydraulic damping connecting piece to generate a pressure transition area. According to the rotary guiding regulator, the influence of vibration on the built-in sensor integrated block in the drilling process of the drill bit is reduced in an active vibration isolation mode, parameter detection data in the drilling process can be more accurate, and then the goodness of fit between the actual drilling track and the required drilling track of the drill bit is improved.

Description

Technical Field

[0001] The present application relates to the field of downhole guidance control technology, and in particular to a rotary guidance regulator. Background Art

[0002] The rotary steerable regulator (or rotary steerable controller) is the core control unit of the rotary steerable drilling system (RSS). It is responsible for adjusting the drill bit direction in real time while the drill string is rotating to achieve precise wellbore trajectory control. The specific working principle is to achieve real-time adjustment of the drill bit direction through a combination of real-time measurement, command analysis and dynamic regulation combined with ground control.

[0003] In actual use, real-time measurement is carried out by detecting parameters such as well inclination, azimuth and tool face through the built-in sensor integrated block (three-axis gravity accelerometer, magnetometer, gyroscope, etc.). When drilling across media and advancing in uneven media, the vibration generated will directly affect the detection accuracy of the built-in sensor integrated block. Summary of the Invention

[0004] The present application provides a rotary steerable regulator, which reduces the impact of vibration during the drilling process of the drill bit on the built-in sensor integrated block through active vibration isolation, so that the parameter detection data during the drilling process can be more accurate, thereby improving the consistency between the actual drilling trajectory of the drill bit and the required drilling trajectory.

[0005] The above-mentioned purpose of this application is achieved through the following technical solutions: The present application provides a rotary guide regulator, comprising: A housing assembly, wherein the housing assembly has a flow guide channel therein and the housing assembly has a proximal end and a distal end; The turbine power generation module and the servo motor module are both arranged inside the housing assembly, and the turbine power generation module is located in front of the servo motor module in the direction from the proximal end to the distal end; A connecting base is provided inside the housing assembly and is connected to the servo motor module; A hydraulic shock-absorbing connector is provided on the connecting base; A drill bit connection hole is provided on an end of the hydraulic shock-absorbing connection piece away from the connection base; Wherein, the turbine power generation module is electrically connected to the servo motor module; The hydraulic shock-absorbing connector is connected to a servo motor module, and the servo motor module is used to drive the hydraulic shock-absorbing connector to rotate and drive the hydraulic shock-absorbing connector to generate a pressure transition zone inside the connector.

[0006] In a possible implementation of the first aspect, the connection base includes: The base assembly is located inside the shell assembly, and a gap is formed between the outer wall of the base assembly and the inner wall of the shell assembly; Plunger, evenly distributed in the circumferential direction of the base assembly and slidably connected to the base assembly; A hydraulic chamber is provided inside the base assembly and communicates with the space where the plunger is located; An adjusting member is disposed in an adjusting hole on the base assembly, and the adjusting member is slidably connected to the base assembly; The connection between the servo motor module and the adjusting member is a rigid connection; The regulating hole is communicated with the hydraulic chamber; The servo motor module is capable of moving toward and away from the base assembly.

[0007] In a possible implementation of the first aspect, the servo motor module includes: A base, disposed inside the housing assembly; A servo motor is slidably connected to the base; The linear drive is arranged on the base and connected to the servo motor. The linear drive is also electrically connected to the turbine power generation module.

[0008] In a possible implementation of the first aspect, a portion of the adjusting member further extends into the hydraulic chamber.

[0009] In a possible implementation of the first aspect, the hydraulic shock-absorbing connection element includes: A hydraulic base assembly is provided on the connecting base, and an open connecting cavity is provided on the hydraulic base assembly; A transition connection assembly is slidably connected to the hydraulic base assembly through an open connection cavity; The hydraulic regulator is arranged on the connection base and connected to the open connection cavity. The hydraulic regulator is used to make the working surface of the hydraulic base assembly contact with the working surface of the transition connection assembly and generate a gap.

[0010] In a possible implementation of the first aspect, connection protrusions are provided on both the working surface of the hydraulic base assembly and the working surface of the transition connection assembly.

[0011] In a possible implementation manner of the first aspect, on a plane parallel to a working surface of the hydraulic base assembly or a working surface of the transition connection assembly, the connection protrusion has an arc shape.

[0012] In a possible implementation of the first aspect, the hydraulic regulator includes: The hydraulic chamber and hydraulic driver are both located on the hydraulic base assembly; The output end of the hydraulic drive is connected to the regulating end of the hydraulic chamber, and the hydraulic drive is electrically connected to the turbine power generation module; The hydraulic chamber is connected to the open connecting cavity.

[0013] In a possible implementation of the first aspect, the hydraulic chamber is annular in shape; The hydraulic chamber and the open connection cavity have a plurality of connection channels, and the plurality of connection channels are evenly arranged around the axis of the hydraulic base assembly.

[0014] In a possible implementation of the first aspect, there are multiple hydraulic drivers, which are evenly arranged around the axis of the hydraulic base assembly.

[0015] The beneficial effects of this application are: The rotary steerable regulator disclosed in the present application provides both local power output and ground power output during the drilling process. These two power output modes can meet the requirements of forward movement and direction adjustment. At the same time, active vibration isolation is used to reduce the impact of vibration during the drilling process of the drill bit on the built-in sensor integrated block, so that the parameter detection data during the drilling process can be more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a rotary guide regulator provided in this application.

[0017] Figure 2 is based on Figure 1 Schematic diagram of the flow path of drilling fluid is given.

[0018] Figure 3 This is a structural schematic diagram of a connection base provided in this application.

[0019] Figure 4 This is a structural diagram of a servo motor module provided by this application.

[0020] Figure 5 This is a structural diagram of another servo motor module provided in this application.

[0021] Figure 6 This is a structural schematic diagram of a hydraulic shock-absorbing connector provided in this application.

[0022] Figure 7 This is a schematic diagram of the distribution of connecting protrusions on a hydraulic base assembly provided by this application.

[0023] Figure 8 This is another schematic diagram of the distribution of connecting protrusions on the hydraulic base assembly provided by this application.

[0024] In the figure, 1. housing assembly, 2. turbine power generation module, 3. servo motor module, 4. connecting base, 5. hydraulic shock-absorbing connector, 6. drill bit connecting hole, 11. diversion channel, 41. base assembly, 42. plunger, 43. hydraulic chamber, 44. adjusting part, 31. base, 32. servo motor, 33. linear drive, 51. hydraulic base assembly, 52. open connecting chamber, 53. transition connection assembly, 54. hydraulic regulator, 541. hydraulic chamber, 542. hydraulic drive. DETAILED DESCRIPTION

[0025] The technical solution in this application is further described in detail below with reference to the accompanying drawings.

[0026] The present application discloses a rotary steerable regulator. In some examples, the rotary steerable regulator disclosed in the present application includes a housing assembly 1, a turbine power generation module 2, a servo motor module 3, a connecting base 4, a hydraulic shock absorbing connector 5 and a drill bit connecting hole 6.

[0027] It should be noted that the technical solution disclosed in this application is to make technical improvements on the existing rotary guide regulator to enable it to have active vibration isolation function. Therefore, the shell assembly 1 in this application refers to a collection of components that can complete the rotary guide regulator to provide the required functions during use.

[0028] See also Figure 1 and Figure 2 The housing assembly 1 has a proximal end and a distal end, wherein the proximal end refers to an end away from the drill bit, and the distal end refers to an end close to the drill bit.

[0029] The housing assembly 1 has a guide channel 11 inside. The function of the guide channel 11 is to supply drilling fluid for flow. After the drilling fluid flows through the pipeline and the rotary guide regulator, it finally flows out of the drill bit and returns to the ground again. During the drilling process of the drill bit, the two main functions of the drilling fluid are flushing and chip removal and high-temperature protection.

[0030] exist Figure 2 As can be seen in the figure, a channel (not shown) needs to be added inside the drill bit for the flow of drilling fluid. After returning to the ground, the drilling fluid is subjected to relevant treatment measures such as sedimentation and filtration before being recycled.

[0031] In the present application, there is a gap between the outer wall of the drill bit located inside the housing assembly 1 and the inner wall of the housing assembly 1. The gap has two functions: to allow drilling fluid to flow and to prevent the vibration generated by the drill bit during operation from being transmitted to the housing assembly 1.

[0032] The turbine power generation module 2 and the servo motor module 3 are both installed inside the outer casing assembly 1. From the position point of view, in the direction from the proximal end to the distal end of the outer casing assembly 1, the turbine power generation module 2 is located in front of the servo motor module 3. The turbine power generation module 2 is electrically connected to the servo motor module 3 and can supply power to the servo motor module 3.

[0033] The function of the turbine generator module 2 is to convert part of the kinetic energy of the drilling fluid during the flow into electrical energy, which is supplied to the servo motor module 3 and other components that require electricity. The function of the servo motor module 3 is to convert electrical energy into kinetic energy to drive the components that need to perform corresponding actions.

[0034] Connecting base 4 is mounted inside housing assembly 1 and connected to servo motor module 3. A hydraulic shock-absorbing connector 5 is mounted on connecting base 4 and connected to servo motor module 3. A drill bit connection hole 6 is located on the end of hydraulic shock-absorbing connector 5 away from connecting base 4. Drill bit connection hole 6 is typically an internally threaded hole for connecting a drill bit.

[0035] The servo motor module 3 is used to drive the hydraulic damping connector 5 to rotate and generate a pressure transition zone within the hydraulic damping connector 5. Specifically, the purpose of driving the hydraulic damping connector 5 is to achieve active drilling. In other words, the power for the drill bit rotation is no longer provided by the ground, but is instead provided by the servo motor module 3. The advantage of this method of advancement is its high precision and suitability for directional drilling.

[0036] The purpose of driving the hydraulic shock-absorbing connector 5 to generate a pressure transition zone is to isolate vibration. The vibration conditions encountered by the drill bit during the forward movement are as follows: Axial vibration: The drill bit periodically impacts the rock, inducing longitudinal fluctuations. Excessive amplitude can cause drill jumps. Lateral vibration: Centrifugal instability of the drill string or collision with the well wall causes lateral swing, inducing vortex, which is divided into forward / backward regular vortex and irregular vortex.

[0037] The function of the hydraulic shock-absorbing connector 5 is to absorb vibration by adjusting the volume of the pressure transition zone. The specific principle is that when vibration occurs, the pressure in the pressure transition zone will change. At this time, the volume of the pressure transition zone will be actively adjusted to make the pressure in the pressure transition zone always constant. This method can achieve active absorption of drill bit vibration.

[0038] The hydraulic shock-absorbing connector 5 is located between the built-in sensor integrated block and the drill bit, which can greatly reduce the vibration felt by the built-in sensor integrated block, allowing the built-in sensor integrated block to work in a relatively stable environment, and helping the built-in sensor integrated block to feedback data more accurately.

[0039] For some examples, see Figure 3The connecting base 4 includes a base assembly 41, a plunger 42, a hydraulic chamber 43 and an adjusting member 44. The base assembly 41 is located inside the shell assembly 1 and there is a gap between the outer wall of the base assembly 41 and the inner wall of the shell assembly 1.

[0040] The plungers 42 are evenly distributed in the circumferential direction of the base assembly 41 and are slidingly connected to the base assembly 41. The plungers 42 are generally located inside the base assembly 41. When needed, one end of the plunger 42 will extend from the base assembly 41 and abut against the inner wall of the outer shell assembly 1.

[0041] The hydraulic chamber 43 is disposed inside the base assembly 41 and communicates with the space where the plunger 42 is located.

[0042] An adjustment member 44 is disposed within an adjustment hole in the base assembly 41. The adjustment member 44 is connected to the base assembly 41 by a sliding connection, such as a keyed or splined connection. The adjustment hole communicates with the hydraulic chamber 43. By moving the adjustment member 44, the volume of the hydraulic chamber 43 can be varied, thereby adjusting the position (extending or retracting) of the plunger 42.

[0043] In some possible implementations, the cross-sectional shape of the adjusting member 44 is rectangular, and a sealing ring is added between the adjusting member 44 and the adjusting hole on the base assembly 41 for sealing.

[0044] The servo motor module 3 is connected to the adjusting member 44 in a rigid connection. In addition, the servo motor module 3 can move toward and away from the base assembly 41 in order to drive the position of the adjusting member 44 to change.

[0045] In some possible implementations, a portion of the adjusting member 44 also extends into the hydraulic chamber 43 in order to make the movement of the plunger 42 more consistent. This is because during actual use, a pressure gradient will inevitably appear inside the hydraulic chamber 43. Extending a portion of the adjusting member 44 into the hydraulic chamber 43 can alleviate the pressure gradient to a certain extent.

[0046] Furthermore, the portion of the adjusting member 44 extending into the hydraulic chamber 43 adopts a stepped structure.

[0047] The purpose of using the connecting base 4 here is to improve the torsional resistance. This is because due to size limitations, the diameter of the torque transmission component (the rotating shaft of the servo motor) in the servo motor module 3 will be limited. When facing a relatively hard geological layer, there is a potential risk of damage to the torque transmission component in the servo motor module 3.

[0048] When using the connecting base 4, the driving mode of the servo motor module 3 can be adjusted to the ground driving mode. At this time, the power for the drill bit rotation is provided by the ground equipment. The connecting base 4 can realize free switching between ground driving and servo motor module 3 driving.

[0049] For some examples, see Figure 4 and Figure 5 The servo motor module 3 includes a base 31, a servo motor 32 and a linear driver 33. The servo motor 32 and the linear driver 33 are both mounted on the base 31, and the base 31 is fixedly mounted inside the housing assembly 1.

[0050] The servo motor 32 is connected to the base 31 by a sliding connection. The linear drive 33 is connected to the servo motor 32 and is electrically connected to the turbine power generation module 2. The servo motor 32 is also electrically connected to the turbine power generation module 2. The turbine power generation module 2 supplies power to the servo motor 32 and the linear drive 33 at the same time.

[0051] The base 31 has two types: independent and annular. A stabilizing ring is added in the circumferential direction of the servo motor 32. The purpose of the stabilizing ring is to ensure that the servo motor 32 can move stably.

[0052] For some examples, see Figure 6 The hydraulic shock-absorbing connecting member 5 includes a hydraulic base assembly 51, an open connecting cavity 52, a transition connecting assembly 53 and a hydraulic regulator 54. The hydraulic base assembly 51 is fixedly mounted on the connecting base 4, the open connecting cavity 52 is arranged on the hydraulic base assembly 51, and the transition connecting assembly 53 is slidingly connected to the hydraulic base assembly 51 through the open connecting cavity 52.

[0053] When the relative positions of the hydraulic base assembly 51 and the transition connection assembly 53 change, the volume of the open connection cavity 52 will also change synchronously.

[0054] The hydraulic regulator 54 is mounted on the connection base 4 and connected to the open connection cavity 52 . The hydraulic regulator 54 is used to make the working surface of the hydraulic base assembly 51 and the working surface of the transition connection assembly 53 contact and generate a gap.

[0055] The hydraulic regulator 54 is used to make the working surface of the hydraulic base assembly 51 contact with the working surface of the transition connection assembly 53 to transmit driving force so that the drill bit can rotate.

[0056] The hydraulic regulator 54 is used to create a gap between the working surface of the hydraulic base assembly 51 and the working surface of the transition connection assembly 53 in order to isolate vibration.

[0057] For some possible implementations, see Figure 7, which is used to provide connecting protrusions on the working surface of the hydraulic base assembly 51 and the working surface of the transition connection assembly 53. The function of the connecting protrusions is to increase the contact area, ensure the stability when transmitting the driving force and reduce the transmission loss of the driving force.

[0058] Further, see Figure 8 It is required that the shape of the connecting protrusion is an arc on a plane parallel to the working surface of the hydraulic base assembly 51 or the working surface of the transition connection assembly 53, so that the length of the connecting protrusion can be increased, and the contact area can be further increased.

[0059] In some examples, the hydraulic regulator 54 includes a hydraulic chamber 541 and a hydraulic driver 542, both of which are fixedly mounted on the hydraulic base assembly 51, the output end of the hydraulic driver 542 is connected to the adjustment end of the hydraulic chamber 541, the hydraulic driver 542 is electrically connected to the turbine power generation module 2, and the hydraulic chamber 541 is connected to the open connecting cavity 52.

[0060] In some possible implementations, the number of hydraulic drivers 542 is three.

[0061] In some possible implementations, the hydraulic driver 542 includes a motor and a telescopic cylinder, which are connected to each other. The power output by the motor is transmitted to the telescopic cylinder, and the length of the piston in the telescopic cylinder extending into the hydraulic chamber 541 will change.

[0062] At this time, in conjunction with the sensor (for detecting pressure) installed on the hydraulic chamber 541 , constant pressure control of the internal pressure of the hydraulic chamber 541 can be achieved.

[0063] In some possible implementations, the hydraulic chamber 541 is annular in shape, and the hydraulic chamber 541 and the open connection cavity 52 have multiple connecting channels, and the multiple connecting channels are evenly arranged around the axis of the hydraulic base assembly 51.

[0064] In some possible implementations, there are multiple hydraulic drivers 542 and they are evenly arranged around the axis of the hydraulic base assembly 51 .

[0065] In some possible implementations, the hydraulic driver 542 is powered by an electric slip ring, the input end of the electric slip ring is electrically connected to the turbine power generation module 2 , and the output end of the electric slip ring is electrically connected to the hydraulic driver 542 .

[0066] The purpose of the above two methods is to ensure that the pressure in the open connection cavity 52 can be distributed quickly and stably, thereby making the gap widths at various locations in the open connection cavity 52 uniform and avoiding the occurrence of jamming.

[0067] It should be noted that the technical solution disclosed in this application also involves a controller. The controller can use a controller inside a built-in sensor integrated block, or a separate controller (such as STM32) can be used for control.

[0068] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A rotary guide regulator, characterized in that: include: A housing assembly (1), wherein the housing assembly (1) has a flow guide channel (11) therein, and the housing assembly (1) has a proximal end and a distal end; The turbine power generation module (2) and the servo motor module (3) are both arranged inside the housing assembly (1), and in the direction from the proximal end to the distal end, the turbine power generation module (2) is located in front of the servo motor module (3); A connecting base (4) is disposed inside the housing assembly (1) and connected to the servo motor module (3); A hydraulic shock-absorbing connector (5) is provided on the connecting base (4); A drill bit connection hole (6) is provided on an end of the hydraulic shock-absorbing connection member (5) away from the connection base (4); Wherein, the turbine power generation module (2) is electrically connected to the servo motor module (3); The hydraulic shock-absorbing connector (5) is connected to the servo motor module (3), and the servo motor module (3) is used to drive the hydraulic shock-absorbing connector (5) to rotate and drive the hydraulic shock-absorbing connector (5) to generate a pressure transition zone inside.

2. The rotary guide adjuster according to claim 1, characterized in that: The connecting base (4) comprises: The base assembly (41) is located inside the shell assembly (1), and a gap exists between the outer wall of the base assembly (41) and the inner wall of the shell assembly (1); Plunger (42), evenly distributed in the circumferential direction of the base assembly (41) and slidably connected to the base assembly (41); A hydraulic chamber (43) is provided inside the base assembly (41) and is in communication with the space where the plunger (42) is located; An adjusting member (44) is disposed in an adjusting hole on the base assembly (41), and the adjusting member (44) is slidably connected to the base assembly (41); The connection between the servo motor module (3) and the adjusting member (44) is a rigid connection; The regulating hole is communicated with the hydraulic chamber (43); The servo motor module (3) is capable of moving toward and away from the base assembly (41).

3. The rotary guide adjuster according to claim 2, characterized in that: The servo motor module (3) includes: A base (31) is provided inside the housing assembly (1); A servo motor (32) is slidably connected to the base (31); The linear drive (33) is arranged on the base (31) and connected to the servo motor (32). The linear drive (33) is also electrically connected to the turbine power generation module (2).

4. The rotary guide adjuster according to claim 2, characterized in that: A portion of the adjusting member (44) also extends into the interior of the hydraulic chamber (43).

5. The rotary guide adjuster according to claim 1, characterized in that: The hydraulic shock-absorbing connecting piece (5) comprises: A hydraulic base assembly (51) is provided on the connecting base (4), and an open connecting cavity (52) is provided on the hydraulic base assembly (51); A transition connection assembly (53) is slidably connected to the hydraulic base assembly (51) through an open connection cavity (52); A hydraulic regulator (54) is provided on the connection base (4) and connected to the open connection cavity (52). The hydraulic regulator (54) is used to make the working surface of the hydraulic base assembly (51) and the working surface of the transition connection assembly (53) contact and generate a gap.

6. The rotary guide adjuster according to claim 5, characterized in that: The working surface of the hydraulic base assembly (51) and the working surface of the transition connection assembly (53) are both provided with connection protrusions.

7. The rotary guide adjuster according to claim 6, characterized in that: On a plane parallel to the working surface of the hydraulic base assembly (51) or the working surface of the transition connection assembly (53), the shape of the connection protrusion is an arc.

8. The rotary guide adjuster according to claim 5, characterized in that: The hydraulic regulator (54) comprises: The hydraulic chamber (541) and the hydraulic driver (542) are both provided on the hydraulic base assembly (51); The output end of the hydraulic driver (542) is connected to the regulating end of the hydraulic chamber (541), and the hydraulic driver (542) is electrically connected to the turbine power generation module (2); The hydraulic chamber (541) is connected to the open connection chamber (52).

9. The rotary guide adjuster according to claim 8, characterized in that: The hydraulic chamber (541) is annular in shape; The hydraulic chamber (541) and the open connection cavity (52) have a plurality of connection channels, and the plurality of connection channels are evenly arranged around the axis of the hydraulic base assembly (51).

10. The rotary guide adjuster according to claim 8 or 9, characterized in that: There are multiple hydraulic drivers (542) and they are evenly arranged around the axis of the hydraulic base assembly (51).

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