Automatic torsion resistance reduction control system for well drilling

Abstract

The invention relates to the technical field of petroleum drilling, in particular to an automatic torsion resistance reduction control system for drilling. A master control module is connected with a top drive PLC through a signal input module, an enable signal receiving module, a positive and negative rotation control module, a parameter control module and a cable. After the main control module receives a top drive control signal and an enable signal, a top drive PLC is controlled through a forward and reverse rotation control module to control a top drive to rotate forwards or reversely according to the set top drive forward and reverse rotation frequency, and / or the main control module sends the set top drive rotating speed and torque to the top drive PLC through a parameter control module, and the top drive PLC controls the top drive to rotate forwards or reversely according to the set top drive forward and reverse rotation frequency. And the top drive PLC controls the top drive to rotate according to the set rotating speed and torque. The problems that in an existing top drive automatic control system, when a communication system is adopted for control, the communication system cannot be directly connected with an unopened top drive system, universality is not high, the communication system needs to be electrically connected with the top drive system, mutual interference exists, and electrical faults are likely to be caused are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of oil drilling technology, and particularly relates to an automatic torsional drag reduction control system for drilling. BACKGROUND

[0002] At present, with the gradual development of unconventional oil and gas wells at home and abroad, long horizontal wells, large displacement wells and complex directional wells are constructed in large quantities, and problems such as large friction torque, serious drilling tool pressure and difficult sliding guide during drilling are increasingly prominent. Therefore, companies at home and abroad have developed their own torsional drag reduction systems, that is, in the sliding drilling mode, the top drive is used to swing the drill string back and forth within a safe torque range, so that the upper drill string makes a reciprocating motion in the circumferential or tangential direction, which can greatly release the friction of the downhole drill string, improve the transmission capacity of the drilling pressure, enhance the stability and accuracy of the azimuth control, improve the sliding drilling efficiency and speed, and extend the length of the horizontal section of the horizontal well. When the top drive is normally controlled, the driller controls the knobs on the top drive driller operation panel to realize the operations of the top drive forward rotation, reverse rotation, torque limit setting and speed setting. However, if manual operation is used for such frequent and accurate operations, it is impossible to achieve the torsional drag reduction operation. Therefore, an automatic control system is needed to control the torsional drag reduction.

[0003] However, the existing automatic control system has the disadvantages of poor universality. Different brands and models of top drives cannot be connected and controlled by the communication system due to the secrecy of the control program. The communication system control can only be used in the top drive system with open program. In addition, the additional control system needs to be electrically interconnected with the top drive system, and the two systems interfere with each other, causing unstable and inaccurate transmission signals, and even causing electrical faults, damaging electrical components. If the encoder of the top drive used on site is damaged, it cannot be used according to the closed-loop control. SUMMARY

[0004] The present application provides an automatic torsional drag reduction control system for drilling, which solves the problem that the existing top drive automatic control system cannot be directly connected with the top drive system that is not open when controlled by the communication system, has poor universality, and needs to be electrically interconnected with the top drive system, which causes mutual interference and electrical faults.

[0005] According to one aspect of the present application, an automatic torsional drag reduction control system for drilling is provided, comprising: a main control module; The main control module is connected with the top drive PLC controller through a signal input module, an enable signal receiving module, a forward and reverse control module, a parameter control module and a cable, respectively. When the main control module receives the top drive control signal input by the signal input module, it is judged whether the enable signal of the top drive PLC controller is received through the enable signal receiving module, if yes, the main control module controls the top drive PLC controller to control the top drive to rotate forward or reverse according to the set top drive forward and reverse rotation frequency through the forward and reverse rotation control module, and / or the main control module sends the set top drive rotating speed and torque to the top drive PLC controller through the parameter control module, so that the top drive PLC controller controls the top drive to rotate according to the set rotating speed and torque.

[0006] Preferably, the signal input module comprises an HMI touch control screen.

[0007] Preferably, the enable signal receiving module comprises a first single-channel solid-state relay and a digital quantity input module. The first single-channel solid-state relay is connected with the digital quantity input module and the enable signal output port of the top drive PLC controller respectively. The digital quantity input module is connected with the main control module.

[0008] Preferably, the forward and reverse rotation control module comprises a second single-channel solid-state relay, a third single-channel solid-state relay and a digital quantity output module. The second single-channel solid-state relay is connected with the forward rotation control signal input port of the top drive PLC controller, and the third single-channel solid-state relay is connected with the reverse rotation control signal input port of the top drive PLC controller. The digital quantity output module is connected with the second single-channel solid-state relay, the third single-channel solid-state relay and the main control module respectively.

[0009] Preferably, the parameter control module comprises a first double-channel solid-state relay, a second double-channel solid-state relay and an analog quantity output module. The first double-channel solid-state relay is connected with the rotating speed input port of the top drive PLC controller, and the second double-channel solid-state relay is connected with the torque input port of the top drive PLC controller. The analog quantity output module is connected with the first double-channel solid-state relay, the second double-channel solid-state relay and the main control module respectively.

[0010] Preferably, it further comprises a rotating speed and torque input module. The rotating speed and torque input module is connected with the main control module and the top drive PLC controller respectively, and the main control module is connected with the driller operation platform. The rotating speed and torque input module is used for receiving the actual rotating speed and torque signals of the top drive output by the top drive PLC controller and sending them to the main control module.

[0011] Preferably, the rotating speed torque input module comprises an analog input module. The analog input module is connected to the main control module. The analog input module is connected to the rotating speed output port and the torque output port of the top drive PLC controller.

[0012] Preferably, the system further comprises a first safety isolation barrier, a second safety isolation barrier, a third safety isolation barrier and a fourth safety isolation barrier. The first safety isolation barrier is connected between the first double-path solid-state relay and the rotating speed input port of the top drive PLC controller, and the second safety isolation barrier is connected between the second double-path solid-state relay and the torque input port of the top drive PLC controller. The third safety isolation barrier is connected between the analog input module AI and the rotating speed output port of the top drive PLC controller, and the fourth safety isolation barrier is connected between the analog input module AI and the torque output port of the top drive PLC controller.

[0013] Preferably, the system further comprises a power module. The power module is connected to the main control module and a power supply, respectively, and is used to convert the power supply voltage into a predetermined voltage and then transmit the predetermined voltage to the main control module and the signal input module, the enable signal receiving module, the forward and reverse control module and the parameter control module connected thereto for power supply. The power module comprises a surge suppressor and a filter.

[0014] Preferably, the system further comprises a forward and reverse control switching module. The forward and reverse control switching module is connected to the forward and reverse control module, the signal input module, the top drive PLC controller and the driller's console, respectively, and is used to control the connection or disconnection of the top drive PLC controller and the forward and reverse control module, and control the connection or disconnection of the driller's console and the top drive PLC controller.

[0015] The present application has at least the following beneficial effects: The present application provides an automatic torsional drag reduction control system for drilling, which comprises a main control module and a signal input module, an enable signal receiving module, a forward and reverse control module and a parameter control module connected to a top drive PLC controller, realizes precise automatic control of the top drive by the top drive PLC controller, achieves the purpose of simulating manual operation, can be adapted to different top drive systems, improves the stability, safety and accuracy of control signal transmission, and greatly improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the specification, serve to explain the technical solutions of the present invention.

[0017] Figure 1 A schematic diagram of the equipment connection for an automatic torsional drag reduction control system for drilling according to an embodiment of the present invention is shown. Detailed Implementation

[0018] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0019] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0020] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0021] Furthermore, to better illustrate the present invention, numerous specific details are set forth in the following detailed embodiments. Those skilled in the art will understand that the present invention can be practiced without certain specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of the invention.

[0022] Figure 1 A schematic diagram of the equipment connection for an automatic torsional drag reduction control system for drilling, according to an embodiment of the present invention, is shown. Figure 1As shown, an automatic torsional drag reduction control system for drilling includes: a main control module; the main control module is connected to a top drive PLC controller via a signal input module, an enable signal receiving module, a forward / reverse control module, a parameter control module, and a cable; when the main control module receives a top drive control signal input by the signal input module, it determines whether it has received an enable signal from the top drive PLC controller through the enable signal receiving module. If so, the main control module controls the top drive PLC controller to rotate forward or reverse according to a set forward / reverse frequency, and / or, the main control module sends a set top drive speed and torque to the top drive PLC controller through the parameter control module, so that the top drive PLC controller controls the top drive to rotate according to the set speed and torque.

[0023] In this invention, the signal input module includes an HMI touch control screen.

[0024] In this embodiment of the invention, the main control module is connected to the signal input module, the enable signal receiving module, the forward / reverse control module, and the parameter control module via cables. The signal input module, i.e., the HMI touch control screen, is located on the front panel of the torsion control system box that controls the top drive. The signal input module, the enable signal receiving module, the forward / reverse control module, and the parameter control module are each connected to the top drive PLC controller via cables. When automatic control of the top drive rotation is required, preset parameters for controlling the top drive rotation, i.e., top drive control signals, such as the given top drive speed, torque, frequency, number of cycles, or time, are input into the signal input module. The signal input module then transmits the input top drive control signals to the main control module.

[0025] When the main control module receives the top drive control signal, the control enable signal receiving module starts, receives the enable signal from the top drive PLC controller, and transmits it to the main control module. When the main control module determines that it has received the enable signal, it indicates that the top drive PLC controller is in normal operating condition and can control the top drive. Then, the main control module sends a forward or reverse control signal to the top drive PLC controller at a preset frequency through the forward or reverse control module. The top drive PLC controller controls the top drive motor to rotate forward or reverse at the preset frequency according to the received forward or reverse signal. At the same time, the main control module sends a preset speed and torque signal to the top drive PLC controller through the parameter control module. After receiving the control signal, the top drive PLC controller controls the top drive to rotate at the preset speed and torque.

[0026] In this invention, the enable signal receiving module includes: a first single-channel solid-state relay and a digital input module; the first single-channel solid-state relay is connected to the enable signal output port of the digital input module and the top drive PLC controller respectively; the digital input module is connected to the main control module.

[0027] In this embodiment of the invention, when the main control module receives the top drive control signal input via the touch control screen, it activates the digital input module DI of the enable signal receiving module. The enable signal output port of the top drive PLC controller outputs the enable signal of the top drive inverter. The enable signal of the top drive inverter controls the first single-channel solid-state relay K1 to close, allowing the digital input module DI to receive the input enable signal through K1. This is a circuit optimization design to avoid power exchange between the top drive enable signal and the system signal. The enable signal is converted into a digital signal recognizable by the main control module DI and then transmitted to the main control module. After receiving the enable signal, the main control module controls the top drive to perform forward and reverse operations through the forward / reverse control module and the parameter control module.

[0028] In this invention, the forward and reverse control module includes: a second single-channel solid-state relay, a third single-channel solid-state relay, and a digital output module; the second single-channel solid-state relay is connected to the forward control signal input port of the top drive PLC controller, and the third single-channel solid-state relay is connected to the reverse control signal input port of the top drive PLC controller; the digital output module is connected to the second single-channel solid-state relay, the third single-channel solid-state relay, and the main control module respectively.

[0029] In this embodiment of the invention, when the main control module determines that it has received an enable signal from the top drive PLC controller, the main control module controls the digital output module DO to start. When it is necessary to control the top drive to rotate forward, the main control module controls the second single-channel solid-state relay K2 to close its contact and the third single-channel solid-state relay K3 to open its contact. The main control module outputs the digital signal (forward rotation signal) controlling the top drive to rotate forward through the digital output module DO. The signal output by the digital output module DO controls the second single-channel solid-state relay K2 to close. The second single-channel solid-state relay K2 is turned on so that the top drive PLC controller receives the output from the main control module. The forward rotation signal causes the top drive PLC controller to start the top drive and rotate it forward. When it is necessary to control the top drive to rotate in reverse, the main control module controls the third single-channel solid-state relay K3 to close and the second single-channel solid-state relay K2 to open. The main control module sends the digital signal (reverse signal) controlling the top drive to rotate in reverse through the digital output module DO. The signal output by the digital output module DO controls the third single-channel solid-state relay K3 to close. The closing of the third single-channel solid-state relay K3 causes the top drive PLC controller to receive the reverse signal output by the main control module, causing the top drive PLC controller to start the top drive and rotate in reverse. The closing of contacts K2 and K3 is controlled by DO, and the main control module is not directly connected to the top drive PLC, thus ensuring electrical safety.

[0030] The main control module alternately controls the second single-channel solid-state relay K2 or the third single-channel solid-state relay K3 to close or open its contacts according to a preset frequency, and outputs forward and reverse control signals through the digital output module DO, thereby controlling the top drive to perform forward and reverse operations at a preset frequency.

[0031] In this invention, the parameter control module includes: a first dual-channel solid-state relay, a second dual-channel solid-state relay, and an analog output module; the first dual-channel solid-state relay is connected to the speed input port of the top drive PLC controller, and the second dual-channel solid-state relay is connected to the torque input port of the top drive PLC controller; the analog output module is connected to the first dual-channel solid-state relay, the second dual-channel solid-state relay, and the main control module respectively.

[0032] In this embodiment of the invention, when the main control module determines that it has received the enable signal from the top drive PLC controller, the main control module controls the analog output module AO to start. When it is necessary to control the rotation of the top drive, the main control module controls the contacts of the first dual-channel solid-state relay K7 and the second dual-channel solid-state relay K8 to close. The main control module outputs the preset speed signal for controlling the rotation of the top drive through the analog output module AO as a control signal recognizable by the top drive PLC, and then transmits it to the top drive PLC controller through the first dual-channel solid-state relay K7, so that the top drive PLC controller controls the top drive to start rotating at the preset speed. In addition, the main control module outputs the preset torque signal for controlling the rotation of the top drive through the analog output module AO as a control signal recognizable by the top drive PLC, and then transmits it to the top drive PLC controller through the second dual-channel solid-state relay K8, so that the top drive PLC controller controls the top drive to start rotating at the preset torque.

[0033] The present invention further includes: a speed and torque input module; the speed and torque input module is connected to the main control module and the top drive PLC controller respectively, and the main control module is connected to the driller's operating table; the speed and torque input module is used to receive the actual speed and actual torque signals of the top drive output by the top drive PLC controller and send them to the main control module.

[0034] In this invention, the speed and torque input module includes: an analog input module; the analog input module is connected to the main control module; the analog input module is respectively connected to the speed output port and the torque output port of the top drive PLC controller.

[0035] In this embodiment of the invention, the analog input module AI is connected to both the speed output port and the torque output port of the top drive PLC controller. When controlling the top drive rotation, the speed output port of the top drive PLC controller transmits the actual speed signal of the current top drive motor to the main control unit via the analog input module AI. Simultaneously, the torque output port of the top drive PLC controller transmits the actual torque signal of the current top drive motor to the main control unit via the analog input module AI. The main control unit transmits the actual speed and torque signals to the driller's control panel, enabling the operator to monitor the top drive's operation in real time.

[0036] The present invention further includes: a first safety barrier, a second safety barrier, a third safety barrier, and a fourth safety barrier; the first safety barrier is connected between the first dual-channel solid-state relay and the speed input port of the top drive PLC controller, the second safety barrier is connected between the second dual-channel solid-state relay and the torque input port of the top drive PLC controller; the third safety barrier is connected between the analog input module AI and the speed output port of the top drive PLC controller, and the fourth safety barrier is connected between the analog input module AI and the torque output port of the top drive PLC controller.

[0037] In this embodiment of the invention, the actual speed signal of the top drive PLC controller enters the analog input module AI through the third safety isolation barrier SF3, while the actual torque signal of the top drive PLC controller enters the analog input module AI through the fourth safety isolation barrier SF4. The third safety isolation barrier SF3 and the fourth safety isolation barrier SF4 are used to isolate the 4-20mA current signal, ensuring the safety of the analog input module AI and the main control module.

[0038] When the first dual-channel solid-state relay K7 and the second dual-channel solid-state relay K8 are connected to the analog output module AO, the preset speed signal output by the main control module will enter the top drive PLC controller through the first safety isolation barrier SF1, and the preset torque signal output by the main control module will enter the top drive PLC controller through the second safety isolation barrier SF2. The first safety isolation barrier SF1 and the second safety isolation barrier SF2 are used to isolate 0-10V voltage signals to ensure the safety of the analog output module AO and the main control module.

[0039] The system's analog signals are isolated by a selected safety barrier to ensure operational safety. This safety barrier provides isolation for power supply, input, and output while ensuring accurate signal transmission.

[0040] This invention further includes a power supply module; the power supply module is connected to both the main control module and the power source, and is used to convert the power supply voltage into a predetermined voltage and transmit it to the main control module and the signal input module, enable signal receiving module, forward / reverse control module, and parameter control module connected thereto. The power supply module includes a surge suppressor and a filter.

[0041] In this embodiment of the invention, the power supply module converts the 220V AC power output to 24V DC power to power the central processing unit (CPU) P1 of the main control module and the various modules connected thereto. The power supply module includes a surge suppressor AR1 to prevent surge damage to other equipment in the circuit and an EMC filter FT1 to filter out conducted signal interference.

[0042] The present invention further includes: a forward / reverse control switching module; the forward / reverse control switching module is connected to the forward / reverse control module, the signal input module, the top drive PLC controller and the driller's operating table respectively, and the forward / reverse control switching module is used to control the connection or disconnection between the top drive PLC controller and the forward / reverse control module, and to control the connection or disconnection between the driller's operating table and the top drive PLC controller.

[0043] In this embodiment of the invention, the forward / reverse control switching module includes: a third dual-channel solid-state relay K4, a fourth dual-channel solid-state relay K5, and a fifth dual-channel solid-state relay K6; wherein, the third dual-channel solid-state relay K4 is connected to the first single-channel solid-state relay K1, the top drive PLC controller, and the main control module respectively; the fourth dual-channel solid-state relay K5 is connected to the second single-channel solid-state relay K2, the driller's operating table, the top drive PLC controller, and the main control module respectively; and the fifth dual-channel solid-state relay K6 is connected to the third single-channel solid-state relay K3, the driller's operating table, the top drive PLC controller, and the main control module respectively.

[0044] The third dual-channel solid-state relay K4 is used as follows: When automatic control is not in use, the third dual-channel solid-state relay K4 is connected to the driller's console and the top drive PLC controller. At this time, the top drive PLC controller transmits the enable signal to the driller's console through the third dual-channel solid-state relay K4, and the driller's console controls the rotation of the top drive. When automatic control is required, the main control module controls the third dual-channel solid-state relay K4 to connect with the first single-channel solid-state relay K1, and simultaneously disconnects from the driller's console. That is, it controls the normally closed contact of the third dual-channel solid-state relay K4 to open and the normally open contact of the first single-channel solid-state relay K1 to close. This allows the main control module to control the first single-channel solid-state relay K1 to close through the third dual-channel solid-state relay K4, so that the enable signal of the top drive PLC controller is transmitted to the main control module.

[0045] The fourth dual-channel solid-state relay K5 and the fifth dual-channel solid-state relay K6 are used to connect to the driller's console and the top drive PLC controller when automatic control is not in use. The forward and reverse signals of the top drive are transmitted to the top drive PLC controller through the driller's console and the fourth dual-channel solid-state relay K5 and the fifth dual-channel solid-state relay K6, so that the driller's console controls the top drive to perform forward and reverse operations.

[0046] When automatic control is required, the main control module controls the fourth dual-channel solid-state relay K5 to connect with the second single-channel solid-state relay K2, while simultaneously disconnecting from the driller's control panel. Specifically, it controls the normally closed contact of the fourth dual-channel solid-state relay K5 to open, and the normally open contact of the second single-channel solid-state relay K2 to close. This causes the control signal for forward rotation of the top drive output by the main control module to control the second single-channel solid-state relay K2 to be transmitted to the top drive PLC controller. Furthermore, the main control module controls the fifth dual-channel solid-state relay K6 to connect with the third single-channel solid-state relay K3, while simultaneously disconnecting from the driller's control panel. Specifically, it controls the normally closed contact of the fifth dual-channel solid-state relay K6 to open, and the normally open contact of the third single-channel solid-state relay K3 to close. This causes the control signal for reverse rotation of the top drive output by the main control module to control the third single-channel solid-state relay K3 to be transmitted to the top drive PLC controller.

[0047] The main control module controls K4, K5, and K6 to switch the enable signal and top drive forward / reverse control signal between manual control on the driller's console and automatic control by the main control module. When the system is not in use, it connects to the existing input / output signals on the driller's console, and after switching, it connects to K1, K2, and K3 to achieve automatic control. K4, K5, K6, K7, and K8 are also connected to external switching buttons for controlling their switching, enabling one-button rapid system switching.

[0048] In this embodiment of the invention, the main control module, signal input module, enable signal receiving module, and forward / reverse control module are connected to a compressed air source via an air filter and pressure reducing valve. The air filter and pressure reducing valve reduces and filters the compressed air, providing positive pressure and explosion-proof protection for the internal circuits of each module. The signal input module includes a username and password input program for operator login; only by entering the correct username and password can the automatic torsional drag reduction control system be used. The signal input module program includes torque and speed limit parameter functions, preventing operators from inputting torque and speed values ​​exceeding these limits to avoid errors and potential hazards. The signal input module's display screen also shows buttons for controlling the emergency start / stop of the automatic torsional drag reduction control system, as well as the current actual top drive speed and torque value, and preset speed and torque values. It can also plot corresponding real-time parameter change curves for convenient on-site observation and recording.

[0049] It is understood that the various embodiments mentioned above in this invention can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this invention will not elaborate further.

[0050] The main control module can be a user equipment (UE), mobile device, user terminal, terminal, cellular phone, cordless phone, personal digital assistant (PDA), handheld device, computing device, in-vehicle device, wearable device, etc. In some possible implementations, the main control module can control the process by calling computer-readable signals stored in its internal memory through its internal processor.

[0051] This invention addresses the shortcomings of existing torsional drag reduction systems by connecting a main control module to the top drive driller's console via a cable. The main control module controls five bidirectional solid-state relays to switch circuits, allowing control from the driller's console to automatic system control, simulating manual operation. This significantly reduces operator workload, minimizes the risk of human error, and simplifies system switching. The main control module directly connects to the top drive PLC controller via various digital and analog input / output modules for data transmission, eliminating direct electrical signal connections between them. This isolates and optimizes the control signals from the electrical system of the top drive driller's console. Digital signal transmission ensures system safety while providing accurate and efficient control of the top drive.

[0052] This invention achieves electrical isolation through rational circuit design, program optimization, and optimal selection of electrical components. It employs encoderless control of the top drive, optimizing and synchronizing the precise control of the top drive speed without an encoder. This significantly improves the safety, stability, and accuracy of system control signal transmission, thereby enhancing drilling speed and downhole safety. It effectively reduces downhole drill string friction, minimizes drag, and enhances tool face stability. Furthermore, this invention is user-friendly, featuring a visual human-machine interface via a touchscreen, requiring only a simple learning curve. The system only needs to connect to the corresponding port of the top drive PLC to be used with various brands of top drive PLC controllers without altering the existing top drive control program, demonstrating strong versatility.

[0053] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An automatic torsional drag reduction control system for drilling, characterized in that, include: Main control module; The main control module is connected to the top drive PLC controller via a signal input module, an enable signal receiving module, a forward / reverse control module, a parameter control module, and a cable. When the main control module receives the top drive control signal from the signal input module, it determines whether it has received the enable signal from the top drive PLC controller through the enable signal receiving module. If so, the main control module controls the top drive PLC controller to rotate forward or in reverse according to the set forward and reverse rotation frequency through the forward and reverse control module, and / or, the main control module sends the set top drive speed and torque to the top drive PLC controller through the parameter control module, so that the top drive PLC controller controls the top drive to rotate according to the set speed and torque.

2. The automatic torsional drag reduction control system for drilling according to claim 1, characterized in that, The signal input module includes an HMI touch control screen.

3. The automatic torsional drag reduction control system for drilling according to claim 1, characterized in that, The enable signal receiving module includes: a first single-channel solid-state relay and a digital input module; The first single-channel solid-state relay is connected to the enable signal output port of the digital input module and the top drive PLC controller, respectively. The digital input module is connected to the main control module.

4. The automatic torsional drag reduction control system for drilling according to claim 1, characterized in that, The forward and reverse control module includes: a second single-channel solid-state relay, a third single-channel solid-state relay, and a digital output module; The second single-channel solid-state relay is connected to the forward rotation control signal input port of the top drive PLC controller, and the third single-channel solid-state relay is connected to the reverse rotation control signal input port of the top drive PLC controller; The digital output module is connected to the second single-channel solid-state relay, the third single-channel solid-state relay, and the main control module, respectively.

5. The automatic torsional drag reduction control system for drilling according to claim 1, characterized in that, The parameter control module includes: a first dual-channel solid-state relay, a second dual-channel solid-state relay, and an analog output module; The first dual-channel solid-state relay is connected to the speed input port of the top drive PLC controller, and the second dual-channel solid-state relay is connected to the torque input port of the top drive PLC controller; The analog output module is connected to the first dual-channel solid-state relay, the second dual-channel solid-state relay, and the main control module, respectively.

6. The automatic torsional drag reduction control system for drilling according to claim 5, characterized in that, It also includes: a speed and torque input module; The speed and torque input module is connected to the main control module and the top drive PLC controller respectively, and the main control module is connected to the driller's operating table; The speed and torque input module is used to receive the actual speed and torque signals of the top drive output by the top drive PLC controller and send them to the main control module.

7. The automatic torsional drag reduction control system for drilling according to claim 6, characterized in that, The speed and torque input module includes: an analog input module; The analog input module is connected to the main control module; The analog input modules are respectively connected to the speed output port and torque output port of the top drive PLC controller.

8. The automatic torsional drag reduction control system for drilling according to claim 7, characterized in that, Also includes: First security barrier, second security barrier, third security barrier and fourth security barrier; The first safety barrier is connected between the first dual-channel solid-state relay and the speed input port of the top drive PLC controller, and the second safety barrier is connected between the second dual-channel solid-state relay and the torque input port of the top drive PLC controller; The third safety barrier is connected between the analog input module AI and the speed output port of the top drive PLC controller, and the fourth safety barrier is connected between the analog input module AI and the torque output port of the top drive PLC controller.

9. The automatic torsional drag reduction control system for drilling according to claim 1, characterized in that, Also includes: Power module; The power module is connected to the main control module and the power supply respectively. The power module is used to convert the power supply voltage into a predetermined voltage and then transmit it to the main control module and the signal input module, enable signal receiving module, forward and reverse control module and parameter control module connected thereto to supply power. The power module includes a surge suppressor and a filter.

10. The automatic torsional drag reduction control system for drilling according to any one of claims 1-9, characterized in that, Also includes: Forward / reverse control switching module; The forward / reverse control switching module is connected to the forward / reverse control module, the signal input module, the top drive PLC controller, and the driller's operating console, respectively. The forward / reverse control switching module is used to control the connection or disconnection between the top drive PLC controller and the forward / reverse control module, and to control the connection or disconnection between the driller's operating console and the top drive PLC controller.

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