Rotary sealing and oil pressure three independent pushing system for rotary steering drilling

Abstract

The present application relates to oil pressure system technical field, especially to a kind of rotary seal oil pressure three independent push system of drilling rotary steering, comprising: drill collar body, it is a cylindrical hollow structure;Hydraulic unit module, including shell, the oil pressure pumping unit for outputting hydraulic oil being arranged in the shell interior and the oil pressure compensation unit for compensating outputting hydraulic oil being arranged in the shell with oil pressure pumping unit side by side;Oil pressure action module, it includes concentrically connected in the interior of the drill collar body intermediate shaft, fixedly sleeved in the intermediate shaft outside hydraulic oil transmission shaft sleeve, sealing bracket is arranged in the outside of hydraulic oil transmission shaft sleeve, guide body is fixedly arranged in the outside of sealing bracket, sealing bracket is provided with corresponding inner groove with the oil outlet, the cavity between inner groove and the oil outlet constitutes oil pressure support cavity, improves the stability of oil pressure while ensuring the accuracy of guidance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil pressure systems, in particular to a rotary sealing and oil pressure three independent pushing system for rotary steerable drilling. BACKGROUND

[0002] With the deep development of oil and gas resources, the traditional drilling tools are facing the problems of low inclination accuracy and low drilling efficiency in vertical drilling and horizontal drilling. Therefore, the 4.75-inch rotary steerable drilling technology emerges as the times require and becomes a new research direction in the field of oil and gas drilling. This technology integrates rotary steering, logging while drilling, geological steering decision analysis and other technologies, realizes the integration of mechanical, electrical, hydraulic, measurement and control cross-professional technologies, and significantly improves the drilling speed, drilling safety and well trajectory control accuracy.

[0003] Chinese patent application publication No. CN104235088A discloses a drilling rig hydraulic system for solving the technical problem of inconvenient use of the existing drilling rig hydraulic system. The technical solution is that the drilling rig hydraulic system does not change the functions of the original drilling rig, such as the tightening of the drill pipe, drilling and pressure drilling, removes the moving cylinder, three leg cylinders and the base, removes two reversing valves in the hydraulic valve group, and adds two hydraulic motors and walking parts, two hydraulic locks, four one-way valves and a pressure reducing valve, so as to realize the function of completing the random movement distance of the equipment by operating the reversing valve in the same direction at one time, and realize the function of automatic steering of the equipment by changing the flow into the two hydraulic motors.

[0004] However, the existing technology has the following problems: the oil pressure fluctuation of the drilling equipment provided by the existing technology is large, and stable oil pressure thrust cannot be provided. SUMMARY

[0005] Therefore, the present application provides a rotary sealing and oil pressure three independent pushing system for rotary steerable drilling to overcome the problem that the drilling equipment in the prior art cannot provide stable oil pressure thrust.

[0006] To achieve the above purpose, the present application provides a rotary sealing and oil pressure three independent pushing system for rotary steerable drilling, comprising:

[0007] The drill collar body is a cylindrical hollow structure;

[0008] The hydraulic unit module is arranged on the outer side of the drill collar body and comprises a shell, an oil pressure pumping unit arranged inside the shell to output hydraulic oil, and an oil pressure compensation unit arranged side by side with the oil pressure pumping unit in the shell to compensate the output hydraulic oil, the shell comprises a bottom plate matched with the drill collar body, and a plurality of connecting holes are arranged on the bottom plate;

[0009] The oil pressure acting module comprises an intermediate shaft concentrically connected inside the collar body, a hydraulic oil transmission sleeve fixedly arranged outside the intermediate shaft, an oil outlet channel arranged inside the hydraulic oil transmission sleeve, a plurality of oil outlets arranged on the outer surface of the hydraulic oil transmission sleeve, a sealing bracket arranged outside the hydraulic oil transmission sleeve, and a guide body fixedly arranged outside the sealing bracket.

[0010] The data acquisition module is connected with the hydraulic unit module and the oil pressure acting module, and comprises a pressure sensor for acquiring the oil pressure inside the oil outlet channel, a temperature sensor for acquiring the temperature of the sealing bracket, and a vibration sensor for acquiring the vibration information of the sealing bracket.

[0011] The monitoring and analyzing module is connected with the data acquisition module, and is used for determining whether the operation of the oil pressure acting module meets the preset standard according to the maximum amplitude value and the temperature rising rate of the sealing bracket under single starting of the oil pressure acting module, and performing starting marking, and determining whether the operation of the hydraulic unit module meets the preset standard according to the proportion of each starting event in the preset starting times.

[0012] Further, the oil pressure pumping unit comprises a driving motor, a hydraulic pump, a pump connecting sleeve, a filter screen, a safety valve and an oil outlet.

[0013] Further, the oil pressure compensation unit comprises a cavity for adjusting pressure, a compensation bladder, a converging valve and an oil return port.

[0014] The compensation bladder is arranged in the cavity, the compensation bladder stores hydraulic oil, the output end of the compensation bladder and the output end of the oil outlet are connected with the converging valve, and the output end of the converging valve is provided with the oil return port.

[0015] Further, when the pressure of the hydraulic oil at the oil return port is greater than the pressure of the hydraulic oil at the oil outlet, the converging valve returns the hydraulic oil to the compensation bladder, and when the pressure of the hydraulic oil at the oil return port is less than the pressure of the hydraulic oil at the oil outlet, the converging valve pressurizes the hydraulic oil in the compensation bladder into the oil return port.

[0016] Further, two end faces of the sealing bracket of the oil pressure acting module are respectively provided with a first bearing and a second bearing, wherein an inner ring surface of the first bearing is connected with the intermediate shaft, an inner ring surface of the second bearing is connected with the hydraulic oil transmission shaft sleeve, and outer ring surfaces of the first bearing and the second bearing are respectively connected with the guide body.

[0017] Further, the monitoring analysis module preliminarily determines whether the operation of the oil pressure acting module meets the preset standard according to the maximum amplitude value of the sealing bracket under single starting of the oil pressure acting module, wherein if the maximum amplitude value is less than a first preset amplitude threshold, it is preliminarily determined that the operation of the oil pressure acting module meets the preset standard.

[0018] If the maximum amplitude value is greater than or equal to the first preset amplitude threshold and less than a second preset amplitude threshold, it is preliminarily determined that the operation of the oil pressure acting module does not meet the preset standard, and it is additionally determined whether the operation of the oil pressure acting module meets the preset standard according to the temperature rise rate of the sealing bracket.

[0019] If the maximum amplitude value is greater than or equal to the second preset amplitude threshold, it is preliminarily determined that the operation of the oil pressure acting module does not meet the preset standard, and the starting is marked as a high amplitude starting event.

[0020] Further, the monitoring analysis module additionally determines whether the operation of the oil pressure acting module meets the preset standard according to the temperature rise rate of the sealing bracket, wherein if the temperature rise rate is less than a first preset temperature rise rate, it is additionally determined that the operation of the oil pressure acting module meets the preset standard.

[0021] If the temperature rise rate is greater than or equal to the first preset temperature rise rate and less than a second preset temperature rise rate, it is additionally determined that the operation of the oil pressure acting module does not meet the preset standard, and the starting is marked as a low amplitude starting event.

[0022] If the temperature rise rate is greater than or equal to the second preset temperature rise rate, it is additionally determined that the operation of the oil pressure acting module does not meet the preset standard, and the starting is marked as a high amplitude starting event.

[0023] Further, the monitoring analysis module determines whether the operation of the hydraulic unit module meets the preset standard according to a proportion of each starting event in a preset number of startings, wherein if the proportion of starting events is less than a first preset proportion threshold, the monitoring analysis module determines that the operation of the hydraulic unit module meets the preset standard.

[0024] If the proportion of starting events is greater than or equal to the first preset proportion threshold, and the proportion of low amplitude starting events is greater than a second preset proportion threshold, it is determined that the hydraulic unit module does not meet the standard, and the reason for the operation of the hydraulic unit module not meeting the standard is verified according to the temperature rise limit value of the sealing bracket.

[0025] If the proportion of the starting event is greater than or equal to the first preset proportion threshold, and the proportion of the high-amplitude starting event is greater than the second preset proportion threshold, it is determined that the oil pressure compensation unit is mechanically faulty and an alert of the mechanical fault of the oil pressure compensation unit is issued.

[0026] Further, the monitoring analysis module verifies the reason for the substandard operation of the hydraulic unit module according to the temperature limit value of the sealing bracket, wherein, in response to the temperature limit value being less than the preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the sealing bracket is worn out, and an alert of the wear of the sealing bracket is issued.

[0027] In response to the temperature limit value being greater than or equal to the preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the purity of the hydraulic oil is substandard, and an alert of the substandard purity of the hydraulic oil is issued.

[0028] Further, the alert module is further included to display the alert information determined by the monitoring analysis module.

[0029] Compared with the prior art, the beneficial effects of the present application are that, through the cooperative work of the hydraulic unit module and the oil pressure action module, the present application can provide stable hydraulic oil output and compensation, ensuring the continuity and stability of the oil pressure thrust, thereby overcoming the problem of unstable oil pressure thrust of the drilling equipment in the prior art.

[0030] Further, through the data acquisition module and the monitoring analysis module, the present application can real-time collect the vibration, temperature and oil pressure data of the sealing bracket, and intelligently analyze based on the preset standard, so as to timely find abnormal conditions in system operation, ensuring the safety and reliability of the system.

[0031] Further, through the stable oil pressure thrust and intelligent monitoring analysis, the present application improves the working efficiency of the drilling equipment, while reducing the risk of drilling accidents caused by unstable oil pressure or system failure, and improving the safety of drilling operations.

[0032] Further, the present application is provided with an oil pressure compensation unit, through the design of the compensation bladder and the converging valve, the output of the hydraulic oil can be automatically adjusted when the oil pressure fluctuates, ensuring the stability of the system oil pressure.

[0033] Further, the present application determines the system operation state according to the maximum amplitude value, the temperature rise rate and the proportion of the starting event of the sealing bracket, and classifies and marks the abnormal conditions, so as to quickly locate the fault cause and issue corresponding alert information, improving the reliability and safety of the system.

[0034] Further, the present application can real-time display the determination results and alert information of the monitoring analysis module through the setting of the alert module, helping the operator to quickly respond and handle abnormal conditions, and avoiding equipment damage or safety accidents caused by delayed handling. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 Fig. 1 is a schematic diagram of a part of an oil pressure system according to an embodiment of the present application;

[0036] Figure 2 Fig. 2 is a schematic diagram of a hydraulic unit module according to an embodiment of the present application;

[0037] Figure 3 Fig. 3 is a schematic diagram of an oil pressure acting module according to an embodiment of the present application;

[0038] Figure 4 Fig. 4 is a schematic diagram of a module connection according to an embodiment of the present application;

[0039] Figure 5 Fig. 5 is a flow chart of a preliminary determination of whether the operation of an oil pressure acting module meets a preset standard according to an embodiment of the present application;

[0040] In the drawings: 1, drill collar body; 2, hydraulic unit module; 21, housing; 211, bottom plate; 212, connecting hole; 22, oil pressure pumping unit; 221, driving motor; 222, hydraulic pump; 223, pump connecting sleeve; 224, filter screen; 225, safety valve; 226, oil outlet; 23, oil pressure compensation unit; 231, cavity; 232, compensation bladder; 233, converging valve; 234, oil return port; 3, oil pressure acting module; 31, intermediate shaft; 32, hydraulic oil transmission shaft sleeve; 33, oil delivery channel; 34, sealing bracket; 35, guide body; 36, oil pressure support cavity; 37, first bearing; 38, second bearing. DETAILED DESCRIPTION

[0041] In order to make the objects and advantages of the present application clearer, the present application will be further described in conjunction with embodiments. It should be understood that the specific embodiments described herein merely serve to explain the present application and should not be used to limit the present application.

[0042] The preferred embodiments of the present application will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments merely serve to explain the technical principles of the present application and are not used to limit the protection scope of the present application.

[0043] Referring to Figures 1 to 5 Fig. 1 is a schematic diagram of a part of an oil pressure system according to an embodiment of the present application; Fig. 2 is a schematic diagram of a hydraulic unit module according to an embodiment of the present application; Fig. 3 is a schematic diagram of an oil pressure acting module according to an embodiment of the present application; Fig. 4 is a schematic diagram of a module connection according to an embodiment of the present application; and Fig. 5 is a flow chart of a preliminary determination of whether the operation of an oil pressure acting module meets a preset standard according to an embodiment of the present application.

[0044] The rotary seal oil pressure three independent pushing system of the rotary steerable drilling according to an embodiment of the present application comprises:

[0045] A drill collar body 1, which is a cylindrical hollow structure;

[0046] A hydraulic unit module 2, which is arranged outside the drill collar body 1, comprises a shell 21, an oil pressure pumping unit 22 arranged inside the shell 21 to output hydraulic oil, and an oil pressure compensation unit 23 arranged in parallel with the oil pressure pumping unit 22 inside the shell 21 to compensate for the output of the hydraulic oil, the shell 21 comprising a bottom plate 211 matched with the drill collar body 1, the bottom plate 211 being provided with a plurality of connecting holes 212;

[0047] An oil pressure acting module 3, which comprises an intermediate shaft 31 concentrically connected inside the drill collar body 1, a hydraulic oil transmission shaft sleeve 32 fixedly sleeved outside the intermediate shaft 31, an oil delivery channel 33 arranged inside the hydraulic oil transmission shaft sleeve 32 and a plurality of oil outlets arranged on the outer surface of the hydraulic oil transmission shaft sleeve 32, a sealing bracket 34 arranged outside the hydraulic oil transmission shaft sleeve 32, a guide body 35 fixedly arranged outside the sealing bracket 34, the sealing bracket 34 being provided with an inner groove corresponding to the oil outlets, a cavity between the inner groove and the oil outlets constituting an oil pressure supporting cavity 36, and an input end of the oil delivery channel 33 being connected with the hydraulic unit module 2;

[0048] A data acquisition module connected with the hydraulic unit module 2 and the oil pressure acting module 3, respectively, comprising a pressure sensor for acquiring the oil pressure inside the oil delivery channel 33, a temperature sensor for acquiring the temperature of the sealing bracket 34, and a vibration sensor for acquiring the vibration information of the sealing bracket 34;

[0049] A monitoring and analyzing module connected with the data acquisition module, for determining whether the operation of the oil pressure acting module 3 meets the preset standard according to the maximum amplitude value and the temperature rise rate of the sealing bracket 34 under a single start of the oil pressure acting module 3 and performing start marking, and determining whether the operation of the hydraulic unit module 2 meets the preset standard according to the proportion of each start event in the preset start number.

[0050] In the embodiment of the application, the working principle of the hydraulic unit module is that the driving motor 221 drives the hydraulic pump 222 to pump the hydraulic oil in the oil bag into the hydraulic pipeline through the rotating sealing part, the oil outlet 226 is communicated with the compensation skin bag 232, and the oil flow returns to the oil bag.

[0051] Specifically, the oil pressure pumping unit 22 comprises a driving motor 221, a hydraulic pump 222, a pump connecting sleeve 223, a filter screen 224, a safety valve 225 and an oil outlet 226; the output end of the driving motor 221 is connected with the hydraulic pump 222, the output end of the hydraulic pump 222 is provided with the pump connecting sleeve 223, the output end of the pump connecting sleeve 223 is provided with the filter screen 224, the output end of the filter screen 224 is provided with a one-way valve, and the output end of the one-way valve is provided with the oil outlet 226.

[0052] Specifically, the oil pressure compensation unit 23 comprises a cavity 231 for adjusting pressure, a compensation bladder 232, a converging valve 233 and an oil return port 234.

[0053] The compensation bladder 232 is arranged in the cavity 231, the compensation bladder 232 stores hydraulic oil, and the output end of the compensation bladder 232 and the output end of the oil outlet 226 are both connected with the converging valve 233, and the output end of the converging valve 233 is provided with the oil return port 234.

[0054] Specifically, the converging valve 233 returns hydraulic oil to the compensation bladder 232 when the pressure of the hydraulic oil at the oil return port 234 is greater than the pressure of the hydraulic oil at the oil outlet 226, and the converging valve 233 pressurizes the hydraulic oil in the compensation bladder 232 into the oil return port 234 when the pressure of the hydraulic oil at the oil return port 234 is less than the pressure of the hydraulic oil at the oil outlet 226.

[0055] Specifically, the two end faces of the sealing bracket 34 of the oil pressure acting module 3 are respectively provided with a first bearing 37 and a second bearing 38, wherein the inner ring surface of the first bearing 37 is connected with the intermediate shaft 31, the inner ring surface of the second bearing 38 is connected with the hydraulic oil transmission shaft sleeve 32, and the outer ring surfaces of the first bearing 37 and the second bearing 38 are respectively connected with the guide body 35.

[0056] Specifically, the monitoring and analyzing module preliminarily determines whether the operation of the oil pressure acting module 3 meets the preset standard according to the maximum amplitude value of the sealing bracket 34 under single start of the oil pressure acting module 3, wherein if the maximum amplitude value is less than a first preset amplitude threshold 0.3 mm, it is preliminarily determined that the operation of the oil pressure acting module 3 meets the preset standard.

[0057] If the maximum amplitude value is greater than or equal to the first preset amplitude threshold and less than a second preset amplitude threshold 0.5 mm, it is preliminarily determined that the operation of the oil pressure acting module 3 does not meet the preset standard, and whether the operation of the oil pressure acting module 3 meets the preset standard is additionally determined according to the temperature rise rate of the sealing bracket 34.

[0058] If the maximum amplitude value is greater than or equal to a second preset amplitude threshold, it is preliminarily determined that the operation of the oil pressure acting module 3 does not meet the preset standard, and the current start-up is marked as a high-amplitude start-up event.

[0059] In the embodiment of the present application, the first preset amplitude threshold is 0.3 mm, and the second preset amplitude threshold is 0.5 mm. The above values are obtained through experimental data analysis and simulation calculation, but the above values are not limited thereto, and a person skilled in the art can adjust the values according to actual needs.

[0060] Specifically, the monitoring and analyzing module additionally determines whether the operation of the oil pressure acting module 3 meets the preset standard according to the temperature rise rate of the sealing bracket 34, wherein if the temperature rise rate is less than a first preset temperature rise rate 3℃ / min, it is additionally determined that the operation of the oil pressure acting module 3 meets the preset standard.

[0061] If the temperature rise rate is greater than or equal to the first preset temperature rise rate and less than a second preset temperature rise rate 5℃ / min, it is additionally determined that the operation of the oil pressure acting module 3 does not meet the preset standard, and the current start-up is marked as a low-amplitude start-up event.

[0062] If the temperature rise rate is greater than or equal to the second preset temperature rise rate, it is additionally determined that the operation of the oil pressure acting module 3 does not meet the preset standard, and the current start-up is marked as a high-amplitude start-up event.

[0063] In the embodiment of the present application, the first preset temperature rise rate is 3℃ / min, and the second preset temperature rise rate is 5℃ / min. The above values are obtained through experimental data analysis and simulation calculation, but the above values are not limited thereto, and a person skilled in the art can adjust the values according to actual needs.

[0064] Specifically, the monitoring and analyzing module determines whether the operation of the hydraulic unit module 2 meets the preset standard according to the proportion of each start-up event in a preset number of start-ups 100, wherein if the proportion of start-up events is less than a first preset proportion threshold 20%, the monitoring and analyzing module determines that the operation of the hydraulic unit module 2 meets the preset standard.

[0065] If the proportion of start-up events is greater than or equal to the first preset proportion threshold, and the proportion of low-amplitude start-up events is greater than a second preset proportion threshold 60%, it is determined that the hydraulic unit module 2 does not meet the standard, and the reason for the operation of the hydraulic unit module 2 not meeting the standard is verified according to the temperature rise limit value of the sealing bracket 34.

[0066] If the proportion of start-up events is greater than or equal to the first preset proportion threshold, and the proportion of high-amplitude start-up events is greater than the second preset proportion threshold, it is determined that the oil pressure compensation unit 23 has a mechanical failure and an alarm for the mechanical failure of the oil pressure compensation unit 23 is issued.

[0067] Specifically, the proportion of the start event is the sum of the proportion of low-amplitude start events and the proportion of high-amplitude start events.

[0068] In the embodiment of the application, the first preset proportion threshold value is 20%, and the second preset proportion threshold value is 60%. The above values are obtained by analyzing historical experimental data, but the above values are not limited thereto, and a person skilled in the art can adjust the values according to actual needs.

[0069] Specifically, the monitoring and analysis module checks the reason for the substandard operation of the hydraulic unit module 2 according to the temperature limit value of the sealing bracket 34, wherein, in response to the temperature limit value being less than the preset temperature threshold value 140℃, it is determined that the reason for not meeting the preset standard is that the sealing bracket 34 is worn out and an alert of sealing bracket wear is issued.

[0070] In response to the temperature limit value being greater than or equal to the preset temperature threshold value, it is determined that the reason for not meeting the preset standard is that the hydraulic oil purity is not up to standard, and an alert of hydraulic oil purity not meeting the standard is issued.

[0071] In the embodiment of the application, the preset temperature threshold value is 140℃. The above value is obtained by analyzing historical experimental data, but the above value is not limited thereto, and a person skilled in the art can adjust the value according to actual needs.

[0072] Specifically, it further comprises an alert module for displaying the alert information determined by the monitoring and analysis module.

[0073] Specifically, the working process of the hydraulic unit module 2 and the oil pressure acting module 3 in the embodiment of the application is as follows: the driving motor 221 is started to drive the hydraulic pump 222 to work, the hydraulic pump 222 extracts hydraulic oil, and after filtering through the pump connecting sleeve 223 and the filter screen 224, the hydraulic oil is output from the oil outlet 226 through the one-way valve; the hydraulic oil in the compensation bladder 232 is combined with the hydraulic oil output by the oil pump unit 22 through the converging valve 233; the hydraulic oil in the oil pressure support cavity 36 is pressed by the hydraulic oil pressure in the oil pressure support cavity 36, and the sealing bracket 34 is pushed to rotate and guide the operation of the guide body 35.

[0074] So far, the technical solutions of the application have been described in combination with the preferred embodiments shown in the drawings, but a person skilled in the art can easily understand that the protection scope of the application is obviously not limited to these specific embodiments. A person skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principles of the application, and the technical solutions after the changes or replacements will all fall within the protection scope of the application.

[0075] The above merely illustrates the preferred embodiments of the present application, and is not used to limit the present application; for those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary seal and separate oil pressure three independent pushing system for rotary steering while drilling, comprising a drill collar body which is a cylindrical hollow structure, the three independent pushing system comprises three groups of independent pushing system, for a single group of pushing system, characterized in that, The application relates to a drilling collar, which comprises a hydraulic unit module, an oil pressure action module and a data acquisition module. The hydraulic unit module is arranged outside a drilling collar body and comprises a shell, an oil pressure pumping unit arranged inside the shell and used for outputting hydraulic oil, and an oil pressure compensation unit arranged in parallel with the oil pressure pumping unit inside the shell and used for compensating the output hydraulic oil, wherein the shell comprises a bottom plate matched with the drilling collar body, and a plurality of connecting holes are arranged on the bottom plate. The oil pressure action module comprises a middle shaft concentrically connected inside the drilling collar body, a hydraulic oil transmission sleeve fixedly sleeved outside the middle shaft, an oil delivery channel arranged inside the hydraulic oil transmission sleeve and a plurality of oil outlets arranged on the outer surface of the hydraulic oil transmission sleeve, a sealing bracket arranged outside the hydraulic oil transmission sleeve, a guide body fixedly arranged outside the sealing bracket, an inner groove corresponding to the oil outlets arranged on the sealing bracket, and an oil pressure support cavity formed between the inner groove and the oil outlets. The data acquisition module is connected with the hydraulic unit module and the oil pressure action module respectively and comprises a pressure sensor used for acquiring the oil pressure inside the oil delivery channel, a temperature sensor used for acquiring the temperature of the sealing bracket and a vibration sensor used for acquiring the vibration information of the sealing bracket. The monitoring and analyzing module is connected with the data acquisition module and is used for judging whether the operation of the oil pressure action module meets the preset standard according to the maximum amplitude value and the temperature rising rate of the sealing bracket under single starting of the oil pressure action module and marking the starting, and judging whether the operation of the hydraulic unit module meets the preset standard according to the proportion of each starting event in the preset starting times. The monitoring and analyzing module preliminarily judges whether the operation of the oil pressure action module meets the preset standard according to the maximum amplitude value of the sealing bracket under single starting of the oil pressure action module, wherein if the maximum amplitude value is smaller than a first preset amplitude threshold value, it is preliminarily judged that the operation of the oil pressure action module meets the preset standard. If the maximum amplitude value is greater than or equal to the first preset amplitude threshold value and smaller than a second preset amplitude threshold value, it is preliminarily judged that the operation of the oil pressure action module does not meet the preset standard, and the operation of the oil pressure action module is additionally judged according to the temperature rising rate of the sealing bracket. If the maximum amplitude value is greater than or equal to the second preset amplitude threshold value, it is preliminarily judged that the operation of the oil pressure action module does not meet the preset standard, and the starting is marked as a high-amplitude starting event. The monitoring and analyzing module additionally judges whether the operation of the oil pressure action module meets the preset standard according to the temperature rising rate of the sealing bracket, wherein if the temperature rising rate is smaller than a first preset temperature rising rate, it is additionally judged that the operation of the oil pressure action module meets the preset standard. If the temperature rising rate is greater than or equal to the first preset temperature rising rate and smaller than a second preset temperature rising rate, it is additionally judged that the operation of the oil pressure action module does not meet the preset standard, and the starting is marked as a low-amplitude starting event. If the temperature rising rate is greater than or equal to the second preset temperature rising rate, it is additionally judged that the operation of the oil pressure action module does not meet the preset standard, and the starting is marked as a high-amplitude starting event. The monitoring analysis module determines whether the operation of the hydraulic unit module meets the preset standard according to the proportion of each starting event in the preset starting number, wherein if the proportion of the starting event is less than a first preset proportion threshold, the monitoring analysis module determines that the operation of the hydraulic unit module meets the preset standard; if the proportion of the starting event is greater than or equal to the first preset proportion threshold and the proportion of the low-amplitude starting event is greater than a second preset proportion threshold, it is determined that the operation of the hydraulic unit module does not meet the standard, and the reason for the operation of the hydraulic unit module not meeting the standard is verified according to the temperature limit value of the sealing bracket; if the proportion of the starting event is greater than or equal to the first preset proportion threshold and the proportion of the high-amplitude starting event is greater than the second preset proportion threshold, it is determined that the oil pressure compensation unit has a mechanical fault and an alarm for the mechanical fault of the oil pressure compensation unit is sent.

2. The rotary sealed tri-independent-acting system for rotary steerable drilling according to claim 1, wherein, The oil pressure pumping unit comprises a driving motor, a hydraulic pump, a pump connecting sleeve, a filter screen, a safety valve and an oil outlet; the output end of the driving motor is connected with the hydraulic pump, the output end of the hydraulic pump is provided with the pump connecting sleeve, the output end of the pump connecting sleeve is provided with the filter screen, the output end of the filter screen is provided with a one-way valve, and the output end of the one-way valve is provided with the oil outlet.

3. The rotary sealed tri-independent-acting system for rotary steerable drilling according to claim 1, wherein, The oil pressure compensation unit comprises a cavity for adjusting pressure, a compensation bladder, a converging valve and an oil return port; The compensation bladder is arranged in the cavity, the compensation bladder stores hydraulic oil, and the output end of the compensation bladder and the output end of the oil outlet are both connected with the converging valve, and the output end of the converging valve is provided with the oil return port.

4. The rotary sealed tri-independent-acting system for rotary steerable drilling according to claim 3, wherein, When the pressure of the hydraulic oil at the oil return port is greater than the pressure of the hydraulic oil at the oil outlet, the converging valve returns the hydraulic oil to the compensation bladder, and when the pressure of the hydraulic oil at the oil return port is less than the pressure of the hydraulic oil at the oil outlet, the converging valve pressurizes the hydraulic oil in the compensation bladder into the oil return port.

5. The rotary sealed tri-independent-acting system for rotary steerable drilling of claim 1, wherein, The two end faces of the sealing bracket of the oil pressure acting module are respectively provided with first and second bearings, wherein the inner ring surface of the first bearing is connected with the intermediate shaft, the inner ring surface of the second bearing is connected with the hydraulic oil transmission shaft sleeve, and the outer ring surfaces of the first and second bearings are respectively connected with the guide body.

6. The rotary sealed tri-independent-acting system for rotary steerable drilling of claim 1, wherein, The monitoring analysis module verifies the reason for the operation of the hydraulic unit module not meeting the standard according to the temperature limit value of the sealing bracket, wherein in response to the temperature limit value being less than a preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the sealing bracket is worn out and an alarm for the wear of the sealing bracket is sent; in response to the temperature limit value being greater than or equal to the preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the purity of the hydraulic oil does not meet the standard and an alarm for the purity of the hydraulic oil not meeting the standard is sent.

7. The rotary sealed tri-independent-acting system of the rotary steerable drilling according to claim 1, wherein, The monitoring analysis module determines whether the operation of the hydraulic unit module meets the preset standard according to the proportion of each starting event in the preset starting number, wherein if the proportion of the starting event is less than a first preset proportion threshold, the monitoring analysis module determines that the operation of the hydraulic unit module meets the preset standard; if the proportion of the starting event is greater than or equal to the first preset proportion threshold and the proportion of the low-amplitude starting event is greater than a second preset proportion threshold, it is determined that the operation of the hydraulic unit module does not meet the standard, and the reason for the operation of the hydraulic unit module not meeting the standard is verified according to the temperature limit value of the sealing bracket; if the proportion of the starting event is greater than or equal to the first preset proportion threshold and the proportion of the high-amplitude starting event is greater than the second preset proportion threshold, it is determined that the oil pressure compensation unit has a mechanical fault and an alarm for the mechanical fault of the oil pressure compensation unit is sent. The oil pressure pumping unit comprises a driving motor, a hydraulic pump, a pump connecting sleeve, a filter screen, a safety valve and an oil outlet; the output end of the driving motor is connected with the hydraulic pump, the output end of the hydraulic pump is provided with the pump connecting sleeve, the output end of the pump connecting sleeve is provided with the filter screen, the output end of the filter screen is provided with a one-way valve, and the output end of the one-way valve is provided with the oil outlet. The oil pressure compensation unit comprises a cavity for adjusting pressure, a compensation bladder, a converging valve and an oil return port; The compensation bladder is arranged in the cavity, the compensation bladder stores hydraulic oil, and the output end of the compensation bladder and the output end of the oil outlet are both connected with the converging valve, and the output end of the converging valve is provided with the oil return port. When the pressure of the hydraulic oil at the oil return port is greater than the pressure of the hydraulic oil at the oil outlet, the converging valve returns the hydraulic oil to the compensation bladder, and when the pressure of the hydraulic oil at the oil return port is less than the pressure of the hydraulic oil at the oil outlet, the converging valve pressurizes the hydraulic oil in the compensation bladder into the oil return port. The two end faces of the sealing bracket of the oil pressure acting module are respectively provided with first and second bearings, wherein the inner ring surface of the first bearing is connected with the intermediate shaft, the inner ring surface of the second bearing is connected with the hydraulic oil transmission shaft sleeve, and the outer ring surfaces of the first and second bearings are respectively connected with the guide body. The monitoring analysis module verifies the reason for the operation of the hydraulic unit module not meeting the standard according to the temperature limit value of the sealing bracket, wherein in response to the temperature limit value being less than a preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the sealing bracket is worn out and an alarm for the wear of the sealing bracket is sent; in response to the temperature limit value being greater than or equal to the preset temperature threshold, it is determined that the reason for not meeting the preset standard is that the purity of the hydraulic oil does not meet the standard and an alarm for the purity of the hydraulic oil not meeting the standard is sent.

Images