Cable type electric hydraulic multifunctional operation instrument and use method

Abstract

The invention relates to the technical field of cable transmission rapid workover treatment, and discloses a cable type electric hydraulic multifunctional operation instrument and a use method, one end of an electronic control unit in the instrument is connected with an upper protective cap, and the upper protective cap is used for protecting a joint thread and a sealing surface on the electronic control unit; the other end of the electronic control unit is connected with one end of the balance power unit and is used for supplying power to the balance power unit and communicating with external signals; the other end of the balance power unit is connected with one end of the hydraulic control unit; the other end of the hydraulic control unit is connected with the anchoring hydraulic cylinder integration unit through the connecting joint component and used for controlling the anchoring hydraulic cylinder integration unit through the hydraulic control unit, the balance power unit provides power for the hydraulic control unit, stable operation of the hydraulic system is guaranteed, and the hydraulic system is stable in operation. The hydraulic control unit is tightly connected with the anchoring hydraulic cylinder integration unit through the connecting joint component, and stable anchoring and fixing and accurate control over the action of the hydraulic cylinder are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of cable transmission rapid well repairing operations, and in particular to a cable-type electric hydraulic multifunctional operating instrument and a use method thereof. Background Art

[0002] In traditional well repair operations, the workload of pulling in and out the oil pipes, such as well clearing, lead stamping, leak detection, and salvage, accounts for about 70 to 80 percent of the total workload. Such a huge workload has greatly reduced the efficiency of well repair operations. In addition, in traditional well repair operations, at least four or five workers are required to stand at the wellhead to carry out the relevant processes of pulling in and out the oil pipes. During the well repair operation, workers not only need to concentrate their attention, but also face many unsafe factors. The heavy workload can easily lead to fatigue, which can cause accidents. At the same time, in traditional oil pipe well repair, the downhole working status cannot be intuitively determined, and can only be judged based on work experience, which has low work efficiency. Traditional well repair has the characteristics of poor construction environment, many safety hazards, and high labor intensity, which seriously restricts the development of speeding up and improving the efficiency of well repair operations.

[0003] In well repair operations, the cable transmission fast well repair operation technology is currently used to save manpower, funds and material resources. At present, the design of instruments in this area in China is still immature and the use effect is not good. Summary of the invention

[0004] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a cable-type electric hydraulic multifunctional working instrument and a method of use, so as to solve the technical problem of how to improve the efficiency of well repair in the prior art.

[0005] The present invention is achieved through the following technical solutions: In a first aspect, the present invention provides a cable-type electric-hydraulic multifunctional working instrument, including an upper protective cap, an electronic control unit, a balancing power unit, a hydraulic control unit, a connecting joint component, and an anchoring hydraulic cylinder integrated unit; One end of the electronic control unit is connected to an upper protective cap, and the upper protective cap is used to protect the joint thread and sealing surface on the electronic control unit; The other end of the electronic control unit is connected to one end of the balancing power unit for supplying power to the balancing power unit and communicating with external signals; The other end of the balancing power unit is connected to one end of the hydraulic control unit to provide power to the hydraulic control unit; The other end of the hydraulic control unit is connected to the anchor hydraulic cylinder integrated unit via a connecting joint component, and is used to control the anchor hydraulic cylinder integrated unit via the hydraulic control unit.

[0006] Preferably, the electronic control unit comprises a first upper connector and a circuit housing; One end of the first upper joint is connected to the upper protective cap, and the other end is threadedly connected to one end of the circuit housing, wherein an anti-rotation washer and a first O-ring are sleeved at the connection between the first upper joint and the circuit housing; the other end of the circuit housing is internally threaded with a positioning keyway for threaded connection with the balancing power unit; A high-pressure sealing needle is provided in the first upper joint; a first pressing plate is provided on the high-pressure sealing needle; the first pressing plate is fixed to the first upper joint by a plurality of hexagon socket head screws; A circuit integration unit is arranged in the circuit housing; one end of the circuit integration unit is connected to the high-voltage sealing needle, and the other end of the circuit integration unit is connected to the internal unit of the balancing power unit.

[0007] Further, the circuit integration unit includes a circuit housing; An electronic skeleton is arranged in the circuit shell; an isolation circuit, a downhole power supply board, a filter board, a main control circuit board, a modem and a hydraulic pump DC motor drive module are fixedly arranged on the electronic skeleton; the upper single-core section of the electronic skeleton is connected to the high-pressure sealing needle; a second O-ring and a third O-ring are arranged between the upper single-core section of the electronic skeleton and the first upper joint, which are used to straighten and support the electronic skeleton; a 19-core socket is fixedly arranged at the lower end of the electronic skeleton by a hexagonal cylindrical end tightening screw; the 19-core socket is connected to the internal unit of the balancing power unit by a first screw.

[0008] Furthermore, the balancing power unit includes a balancing upper joint, a balancing housing, a balancing lower joint, a 19-core high-pressure plug disposed in the balancing upper joint, a piston assembly disposed in the balancing housing, and a hydraulic pump motor assembly disposed in the balancing lower joint; The two ends of the balancing upper joint and the balancing lower joint are respectively provided with a first guide key and a first split screw ring; wherein one end of the balancing upper joint is threadedly connected to the circuit housing through the first guide key and the first split screw ring, and the other end is connected to one end of the balancing housing through the first guide key and the first split screw ring, wherein a fourth O-ring is provided between the balancing upper joint and the balancing housing for sealing the internal hydraulic oil and external mud between the balancing housing; one end of the balancing lower joint is connected to the other end of the balancing housing through the first guide key and the first split screw ring; and the other end is connected to the hydraulic control unit through the first guide key and the first split screw ring; The 19-core high-pressure plug is plugged and connected to the 19-core socket; one end of the piston assembly is plugged into the balancing upper joint, and the other end is connected to the hydraulic pump motor assembly, and the hydraulic pump motor assembly is driven and connected to the hydraulic control unit.

[0009] Furthermore, the 19-core high-voltage plug is provided with a positioning hole, the positioning hole is positioned with the first coil pin of the balancing upper connector, and is fixed to the balancing upper connector through a pressure cap, wherein an O-ring is provided between the 19-core high-voltage plug and the balancing upper connector for sealing the balancing cavity and the electronic control unit; a one-way oil filling plug and a first safety valve are provided on the side walls of the balancing upper connector, wherein the one-way oil filling plug is provided with a one-way valve for disassembling the oil filling nozzle after oil filling to prevent hydraulic oil from overflowing; The piston assembly includes a first piston rod, a balance piston and a balance spring; One end of the first piston rod is inserted into the balancing upper joint, and a fifth O-ring is provided between the first piston rod and the inside of the balancing upper joint; the balancing piston is sleeved on the first piston rod through a balancing spring, so that when the balancing housing is filled with hydraulic oil, the hydraulic oil can push the balancing piston to move along the first piston rod; a first dustproof ring is provided between the balancing piston and the balancing housing, so as to scrape off debris between the balancing housing and the balancing housing; a second dustproof ring is provided between the balancing piston and the first piston rod, so as to scrape off debris between the piston and the first piston rod; The hydraulic pump motor assembly comprises a motor barrel, a coupling and a hydraulic pump; The motor cylinder is fixed in the balancing lower joint by means of connecting screws; The coupling is arranged in the motor cylinder, the hydraulic pump is fixed to the outside of the motor cylinder by a plurality of first hexagonal cylindrical head screws, and the hydraulic pump is drivingly connected to the hydraulic control unit; A brushless DC motor is arranged in the motor cylinder; the brushless DC motor is fixed in the motor cylinder by a plurality of second hexagonal cylindrical head screws; the other end of the first piston rod is connected to the hydraulic pump via the output shaft of the brushless DC motor and a coupling.

[0010] Furthermore, a valve group assembly, a working oil circuit, an oil return circuit and a main oil circuit are provided in the hydraulic control unit; one end of the working oil circuit, the oil return circuit and the main oil circuit are connected to the hydraulic pump; the other end is connected to the anchor hydraulic cylinder integrated unit through the connecting joint component after passing through the valve group assembly; The valve group assembly includes a first one-way valve, a second safety valve, a first pressure sensor, a first two-position three-way normally open solenoid valve, a two-position three-way normally closed solenoid valve, a second one-way valve, a second two-position three-way normally open solenoid valve, a second pressure sensor, a third safety valve and a fourth safety valve which are sequentially arranged along the working oil circuit, the return oil circuit and the main oil circuit; wherein the first two-position three-way normally open solenoid valve and the second two-position three-way normally open solenoid valve are used to control the lifting or pushing unit action of the hydraulic cylinder piston in the anchor hydraulic cylinder integrated unit; the two-position three-way normally closed solenoid valve is used to control the anchor unit in the anchor hydraulic cylinder integrated unit, and the anchor is automatically reset by a spring when the power is cut off; An oil guide joint and a core plug are provided in one end of the hydraulic control unit close to the connecting joint component; the working oil circuit, the return oil circuit and the main oil circuit are connected to the anchor hydraulic cylinder integrated unit through the oil guide joint via the connecting joint component; the core plug is connected to the connecting joint component.

[0011] Furthermore, the connecting joint component includes a second upper joint, a sealed oil pipe joint component and a compression sleeve; One end of the second upper joint is connected to one end of the hydraulic control unit via a second guide key and a second split screw ring, and a fourteenth O-ring is provided between the second upper joint and the hydraulic control unit; One end of the sealed oil pipe joint component is sleeved in the second upper joint, and the other end is fixed to the other end of the second upper joint by a press sleeve; The second upper joint includes a 4-core socket, a 4-core high-voltage plug and a 4-core high-voltage socket, wherein the 4-core socket is used to connect with the 4-core plug; the 4-core high-voltage plug is connected with the 4-core high-voltage socket, wherein a twenty-first O-ring is provided between the 4-core high-voltage plug and the second upper joint for sealing high-pressure oil and low-pressure oil; the 4-core high-voltage plug is connected to the sealed oil pipe joint component through an inner hexagonal top screw; The sealed oil pipe joint component is connected to the working oil circuit, the oil return circuit and the main oil circuit in the hydraulic control unit, and is connected to the anchor hydraulic cylinder integrated unit through the sealed oil pipe joint component; An oil plug is provided on the side wall of the second upper joint, and a fifteenth O-ring is provided on the oil plug for sealing the working oil circuit, the return oil circuit and the main oil circuit between the sealing oil pipe joint component and the hydraulic control unit; The sealed oil pipe joint component is limited by the cooperation of the second rolling pin and the inner hole notch of the second upper joint; the sealed oil pipe joint component is provided with a potentiometer connecting tube for a displacement sensor.

[0012] Preferably, the anchor hydraulic cylinder integrated unit comprises an anchor body, a hydraulic cylinder, a communicating vessel and a connecting joint; One end of the anchor body is connected to the connecting joint component, and the other end is connected to one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected to the connecting joint through a communicating vessel; The anchor body is sleeved with a fixed large tube and a connecting limit ring; a twenty-third O-ring and a twenty-fourth O-ring are provided between the fixed large tube and the anchor body; they are used to seal between the anchor body cavity and the piston large cavity; a large oil-passing tube is sleeved inside the fixed large tube; the large oil-passing tube is connected to the connecting joint component; The hydraulic cylinder is provided with a piston, an oil-passing small tube and a second piston rod; The small oil-passing tube is sleeved in the second piston rod and is connected to the large oil-passing tube; The piston sleeve is arranged at one end of the second piston rod and abuts against the end of the anchor body; The other end of the second piston rod is connected to the connecting joint via a communicating vessel, and a sealing plug is provided inside one end of the second piston rod close to the connecting plug, and a twenty-ninth O-ring is sleeved between the sealing plug and the second piston rod.

[0013] Furthermore, the anchor body is provided with a plurality of anchor claws along the circumference of the inner wall; the anchor claw is provided with a spring, the spring is provided with a second pressure plate, the second pressure plate is fixed to the anchor body by a plurality of second screws, and a twenty-second O-ring is provided in the anchor claw for sealing the inner cavity from external mud; A twenty-sixth O-ring is provided between the communicating vessel and the hydraulic cylinder, and a twenty-eighth O-ring is provided between the communicating vessel and the second piston rod; The communicating vessel is provided with a screw plug, and a twenty-seventh O-ring is provided between the screw plug and the communicating vessel.

[0014] In a second aspect, the present invention further provides a method for using a cable-type electric-hydraulic multifunctional working instrument, based on the above-mentioned cable-type electric-hydraulic multifunctional working instrument, comprising the following process: The balancing power unit is powered by an electronic control unit and controlled by signals from the outside world. The hydraulic power of the balancing power unit is transmitted to the anchoring hydraulic cylinder integrated unit through the hydraulic control unit via the connecting joint components as needed, and the anchoring unit and hydraulic cylinder in the anchoring hydraulic cylinder integrated unit are controlled.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention provides a cable-type electric hydraulic multifunctional working instrument, which forms a highly integrated system through the organic combination of an electronic control unit, a balancing power unit, a hydraulic control unit, a connecting joint component and an anchoring hydraulic cylinder integrated unit. This modular design is not only easy to install and maintain, but also improves the scalability and flexibility of the system, so that each component can be upgraded or replaced separately, reducing maintenance costs. The balancing power unit provides stable and efficient power for the hydraulic control unit, ensuring the stable operation of the hydraulic system. At the same time, the electronic control unit not only supplies power to the balancing power unit, but is also responsible for communicating with external signals, achieving precise control of the entire system and improving work efficiency and accuracy. The hydraulic control unit is closely connected to the anchoring hydraulic cylinder integrated unit through the connecting joint component, achieving precise control of the anchoring action. This hydraulic control method has the characteristics of fast response speed and high control accuracy, and can ensure the stability and reliability of anchoring under various working conditions.

[0016] Furthermore, the electronic control unit forms a highly integrated module through the organic combination of the first upper joint, the circuit housing, the high-pressure sealing needle, the first pressure plate and other components. This design not only improves the compactness and stability of the system, but also facilitates installation, maintenance and upgrading, and reduces the complexity and cost of the overall system. The connection between the first upper joint and the circuit housing is provided with an anti-rotation gasket and a first O-ring. This design ensures the sealing of the connection and prevents liquid or gas leakage, thereby ensuring the normal operation of the circuit integration unit inside the electronic control unit in a harsh environment. The high-pressure sealing needle is fixed to the first upper joint through the first pressure plate and a plurality of hexagon socket cylindrical head screws as the connection point between the circuit integration unit and the external signal or power supply, ensuring the stability and reliability of the electrical connection. This design effectively prevents the loosening or breaking of the electrical connection caused by vibration or impact. The inner thread of the other end of the circuit housing is provided with a positioning keyway for threaded connection with the balancing power unit. This design not only realizes the precise positioning between the electronic control unit and the balancing power unit, but also ensures the close connection between the two, thereby improving the stability and reliability of the entire system.

[0017] Furthermore, the circuit integration unit integrates multiple functional modules such as isolation circuit, downhole power board, filter board, main control circuit board, modulation and demodulation, and hydraulic pump DC motor drive module on the electronic skeleton to form a compact and efficient module. This design not only improves the integration of the system, but also facilitates installation, maintenance and upgrading, reducing the complexity and cost of the overall system. A second O-ring and a third O-ring are provided between the upper single-core section of the electronic skeleton and the high-pressure sealing needle. This double sealing design ensures the isolation of the circuit integration unit from the external environment and prevents liquid or gas leakage. At the same time, the two O-rings also play a role in supporting the electronic skeleton, improving its stability and reliability. The upper single-core section of the electronic skeleton is connected to the high-pressure sealing needle, realizing the reliable connection between the circuit integration unit and the external signal or power supply. This design ensures the accurate transmission of signals and the stable supply of power, providing a strong guarantee for the normal operation of the system. The lower end of the electronic skeleton is fixed with a 19-core socket by a hexagonal cylindrical end set screw. This design facilitates the connection of the circuit integration unit with the internal unit of the balance power unit. At the same time, the 19-pin socket provides multiple signal and power channels to meet the system's needs for multiple signals and power.

[0018] Furthermore, the balanced power unit integrates multiple key components such as a 19-core high-voltage plug, a piston assembly, a hydraulic pump motor assembly, and forms a compact and efficient module through structural parts such as a balanced upper joint, a balanced housing, and a balanced lower joint. This design not only improves the integration of the system, but also facilitates installation, maintenance, and upgrades, reducing the complexity and cost of the overall system. The plug-in connection of the 19-core high-voltage plug and the 19-core socket realizes the electrical connection between the circuit integration unit and the balanced power unit, ensuring accurate signal transmission and stable power supply. The coordinated work of the piston assembly and the hydraulic pump motor assembly ensures the efficient transmission of hydraulic power.

[0019] Furthermore, the 19-core high-voltage plug is positioned through the positioning hole and the first coil pin of the upper joint of the balance, and is fixed by the pressure cap. This design ensures the stability and reliability of the electrical connection. At the same time, the use of the O-ring effectively seals the space between the balance chamber and the electronic control unit, prevents the infiltration of hydraulic oil or mud, and protects the electronic components. The design of the one-way oil filling plug makes it easy to inject hydraulic oil during the oil filling process. After the oil filling is completed, the oil filling nozzle can be removed to prevent the hydraulic oil from overflowing, which not only ensures the normal operation of the system, but also facilitates maintenance operations. The setting of the first safety valve provides additional safety protection to prevent damage caused by excessive system pressure. The piston assembly includes a first piston rod, a balance piston and a balance spring. This design enables the hydraulic oil to push the balance piston to move along the first piston rod, thereby realizing the transmission of hydraulic power. The hydraulic pump motor assembly includes a motor barrel, a coupling and a hydraulic pump. These components are carefully designed and laid out to form a compact and efficient module. The DC brushless motor is connected to the hydraulic pump through a coupling to achieve stable power transmission. At the same time, the design inside the motor barrel protects the motor and facilitates the connection with other components.

[0020] Furthermore, the working oil circuit, return oil circuit and main oil circuit in the hydraulic control unit are reasonably arranged, one end is connected to the hydraulic pump, and the other end is connected to the anchor hydraulic cylinder integrated unit through the connecting joint component after passing through the valve group assembly, which ensures the smooth flow of hydraulic oil and improves the hydraulic transmission efficiency of the system. The valve group assembly includes a variety of control components, and the coordinated work of these components realizes the precise control and protection of the hydraulic system, and improves the stability and reliability of the system. Multiple safety valves are set in the hydraulic control unit, which can automatically open when the system pressure is too high to release excess pressure, thereby protecting the system from damage. This design improves the safety performance of the system and reduces the possibility of failure. The first pressure sensor and the second pressure sensor are set in the hydraulic control unit. These sensors can monitor the pressure changes of the system in real time and transmit data to the control system, which is convenient for users to monitor and maintain. An oil guide joint is provided in one end of the hydraulic control unit close to the connecting joint component. This design enables the working oil circuit, return oil circuit and main oil circuit to be easily connected to the connecting joint component through the oil guide joint, realizing the smooth transmission of hydraulic oil.

[0021] Furthermore, the connection joint component is connected to the hydraulic control unit through the second guide key and the second split screw ring. This standardized connection method ensures the stability and reliability of the connection. At the same time, the use of the fourteenth O-ring provides additional sealing protection to prevent the leakage of hydraulic oil. A 4-core socket, a 4-core high-voltage plug and a 4-core high-voltage socket are set in the connection joint component. The coordinated work of these electrical components realizes the electrical connection between the hydraulic control unit and the anchor hydraulic cylinder integrated unit. In particular, the twenty-first O-ring between the 4-core high-voltage plug and the second upper joint ensures the effective isolation between the high-pressure oil and the low-pressure oil, thereby improving the safety of the system. The sealed oil pipe joint component is connected to the working oil circuit, the return oil circuit and the main oil circuit in the hydraulic control unit, and is connected to the anchor hydraulic cylinder integrated unit through the sealed oil pipe joint component. This design allows the hydraulic oil to flow smoothly between the various components, realizing the efficient transmission of hydraulic power. At the same time, the use of the sealed oil pipe joint component also improves the sealing performance of the system and prevents the leakage of hydraulic oil.

[0022] Furthermore, the anchor hydraulic cylinder integrated unit integrates key components such as the anchor body, hydraulic cylinder, connecting tube and connecting joint to form a compact and efficient module, which not only reduces the complexity and cost of the system, but also improves the reliability and maintainability of the system. The large oil pipe is connected to the connecting joint component to ensure that the hydraulic oil can smoothly enter the anchor hydraulic cylinder integrated unit. The small oil pipe is sleeved in the second piston rod and connected to the large oil pipe. This design saves space and ensures the smoothness of the oil circuit. At the same time, the second piston rod is connected to the connecting joint through the connecting tube, so that the hydraulic oil can form an effective circulation in the hydraulic cylinder. The piston is sleeved at one end of the second piston rod and abuts against the end of the anchor body. This design ensures the stable movement of the piston and prevents the piston from colliding with the anchor body during movement. At the same time, the setting of the small oil pipe also ensures that the hydraulic oil can smoothly push the piston to reciprocate.

[0023] The present invention also provides a method for using a cable-type electric hydraulic multifunctional operating instrument, which supplies power and controls signals to the balancing power unit through an electronic control unit, thereby realizing a high degree of integration and automation of the entire operating instrument. This design not only simplifies the operating process, but also improves operating efficiency and accuracy. When the instrument is working, instructions are sent on the ground, and the downhole electronic section control system completes the downhole operation after receiving the signal. The ground control system with a human-computer interaction interface can detect and record the working status of the downhole instrument in real time: instrument depth, power supply voltage, power supply current, cable head voltage, instrument temperature, anchoring pressure, main line pressure, hydraulic cylinder piston displacement, to ensure the stability and success rate of downhole operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a cable-type electric-hydraulic multifunctional working instrument in an embodiment of the present invention; Figure 2 It is a structural diagram of an electronic control unit in an embodiment of the present invention; Figure 3 It is a structural diagram of a balanced power unit in an embodiment of the present invention; Figure 4 It is a structural diagram of a hydraulic control unit in an embodiment of the present invention; Figure 5 It is a structural diagram of a connecting joint component in an embodiment of the present invention; Figure 6 It is a structural diagram of the anchor and piston hydraulic cylinder unit in an embodiment of the present invention; In the figure: 1. upper protective cap; 2. electronic control unit; 3. balancing power unit; 4. hydraulic control unit; 5. connecting joint components; 6. anchoring hydraulic cylinder integrated unit; 1-1, high-pressure sealing needle; 1-2, hexagon socket head screw; 1-3, first pressure plate; 1-4, first upper joint; 1-5, anti-rotation washer; 1-6, first O-ring; 1-7, electronic skeleton; 1-8, circuit housing; 1-9, hexagon socket head set screw; 1-10, first screw; 1-11, 19-core socket; 1-12, second O-ring; 1-13, third O-ring; 2-1, pressure cap; 2-2, first guide key; 2-3, 19-core high-voltage plug; 2-4, first coil pin; 2-5, first split screw ring; 2-6, one-way oil filling plug; 2-7, first safety valve; 2-8, fourth O-ring; 2-9, balance upper joint; 2-10, first piston rod; 2-11, balance housing; 2-12, first dustproof ring; 2-13, second dustproof ring; 2-14, balance piston; 2-15, balance spring; 2-16, connecting screw; 2-17, DC brushless motor; 2-18, balance lower joint; 2-19, coupling; 2-20, hydraulic pump; 2-21, first hexagon socket head screw; 2-22, second hexagon socket head screw; 2-23, motor cylinder; 2-24, fifth O-ring; 3-1, valve group assembly; 3-2, first one-way valve; 3-3, valve core cover; 3-4, sixth O-ring; 3-5, safety valve cover; 3-6, seventh O-ring; 3-7, eighth O-ring; 3-8, second safety valve; 3-9, first solenoid valve cover; 3-10, ninth O-ring; 3-11, first pressure sensor; 3-12, second solenoid valve cover; 3-13, tenth O-ring; 3-14, first two-position three-way normally open solenoid valve; 3-15, two-position three-way normally closed solenoid valve; 3-16, eleventh O-ring; 3-17, one-way valve seat; 3-18, second one-way valve; 3-19, twelfth O-ring; 3-20, drain plug; 3-21, first limit screw; 3-22, thirteenth O-ring; 3-23, oil guide joint; 3-24 , 4-core plug; 3-25, second two-position three-position normally open solenoid valve; 3-26, second pressure sensor; 3-27, third safety valve; 3-28, fourth safety valve; 4-1, the fourteenth O-ring; 4-2, the second guide key; 4-3, the 4-core socket; 4-4, the second split screw ring; 4-5, the 4-core high-voltage plug; 4-6, the 4-core high-voltage socket; 4-7, the oil plug; 4-8, the fifteenth O-ring; 4-9, the hexagonal top screw; 4-10, the second upper joint; 4-11, the oil pipe joint component; 4-12, the second roll pin; 4-13, the sixteenth O-ring; 4-14, the pressure sleeve; 4-15, the second limit screw; 4-16, the seventeenth O-ring; 4-17, the eighteenth O-ring; 4-18, the nineteenth O-ring; 4-19, the twentieth O-ring; 4-20, the twenty-first O-ring; 5-1, large oil pipe; 5-2, second pressure plate; 5-3, twenty-second O-ring; 5-4, anchor claw; 5-5, spring; 5-6, second screw; 5-7, twenty-third O-ring; 5-8, twenty-fourth O-ring; 5-9, fixed large pipe; 5-10, anchor body; 5-11, connecting limit ring; 5-12, piston; 5-13, twenty-fifth O-ring; 5-14, small oil pipe; 5-15, hydraulic cylinder; 5-16, second piston rod; 5-17, twenty-sixth O-ring; 5-18, twenty-seventh O-ring; 5-19, screw plug; 5-20, twenty-eighth O-ring; 5-21, communicating vessel; 5-22, twenty-ninth O-ring; 5-23, sealing plug; 5-24, connecting joint. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] The object of the present invention is to provide a cable-type electric-hydraulic multifunctional operating instrument to solve the technical problem of how to improve the efficiency of well repair in the prior art.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1 In one embodiment of the present invention, a cable-type electric-hydraulic multifunctional working instrument is provided, including an upper protective cap 1, an electronic control unit 2, a balancing power unit 3, a hydraulic control unit 4, a connecting joint component 5 and an anchoring hydraulic cylinder integrated unit 6; one end of the electronic control unit 2 is connected to the upper protective cap 1, and the upper protective cap 1 is used to protect the joint thread and sealing surface on the electronic control unit 2; the other end of the electronic control unit 2 is connected to one end of the balancing power unit 3, which is used to power the balancing power unit 3 and communicate with external signals; the other end of the balancing power unit 3 is connected to one end of the hydraulic control unit 4, which is used to provide power to the hydraulic control unit 4; the other end of the hydraulic control unit 4 is connected to the anchoring hydraulic cylinder integrated unit 6 through the connecting joint component 5, which is used to control the anchoring hydraulic cylinder integrated unit 6 through the hydraulic control unit 4.

[0028] Specifically, according to Figure 2As shown, the electronic control unit 2 includes a first upper joint 1-4 and a circuit housing 1-8; one end of the first upper joint 1-4 is connected to the upper protective cap 1, and the other end is threadedly connected to one end of the circuit housing 1-8, wherein an anti-rotation washer 1-5 and a first O-ring 1-6 are provided at the connection between the first upper joint 1-4 and the circuit housing 1-8; the other end of the circuit housing 1-8 is provided with a positioning keyway on the internal thread for threaded connection with the balancing power unit 3; a high-pressure sealing needle 1-1 is provided in the first upper joint 1-4; a first pressure plate 1-3 is provided on the high-pressure sealing needle 1-1; the first pressure plate 1-3 is fixed to the first upper joint 1-4 by a number of hexagon socket head screws 1-2; a circuit integrated unit is provided in the circuit housing 1-8; one end of the circuit integrated unit is connected to the high-pressure sealing needle 1-1, and the other end is connected to the internal unit of the balancing power unit 3.

[0029] Specifically, the circuit integration unit includes a circuit shell 1-8; an electronic skeleton 1-7 is arranged in the circuit shell 1-8; an isolation circuit, a downhole power supply board, a filter board, a main control circuit board, a modem and a hydraulic pump DC motor drive module are fixedly arranged on the electronic skeleton 1-7; wherein the upper single-core section of the electronic skeleton 1-7 is connected to the high-pressure sealing needle 1-1; wherein a second O-ring 1-12 and a third O-ring 1-13 are arranged between the upper single-core section of the electronic skeleton 1-7 and the first upper joint 1-4, which are used to straighten and support the electronic skeleton 1-7; a 19-core socket 1-11 is fixed to the lower end of the electronic skeleton 1-7 by a hexagonal cylindrical end tightening screw 1-9; the 19-core socket 1-11 is connected to the internal unit of the balancing power unit 3 by a first screw 1-10.

[0030] Specifically, according to Figure 3As shown, the balancing power unit 3 includes a balancing upper joint 2-9, a balancing housing 2-11, a balancing lower joint 2-18, a 19-core high-pressure plug 2-3 arranged in the balancing upper joint 2-9, a piston assembly arranged in the balancing housing 2-11, and a hydraulic pump motor assembly arranged in the balancing lower joint 2-18; the two ends of the balancing upper joint 2-9 and the balancing lower joint 2-18 are respectively provided with a first guide key 2-2 and a first split screw ring 2-5; wherein one end of the balancing upper joint 2-9 is threadedly connected to the circuit housing 1-8 through the first guide key 2-2 and the first split screw ring 2-5, and the other end is threadedly connected to one end of the balancing housing 2-11 through the first guide key 2-2 and the first split screw ring 2-5 Connection, wherein a fourth O-ring 2-8 is provided between the balancing upper joint 2-9 and the balancing housing 2-11, for sealing the internal hydraulic oil and external mud between the balancing housing 2-11; one end of the balancing lower joint 2-18 is connected to the other end of the balancing housing 2-11 through the first guide key 2-2 and the first split screw ring 2-5; the other end is connected to the hydraulic control unit 4 through the first guide key 2-2 and the first split screw ring 2-5; the 19-core high-pressure plug 2-3 is plugged and connected to the 19-core socket 1-11; one end of the piston assembly is plugged into the balancing upper joint 2-9, and the other end is connected to the hydraulic pump motor assembly, and the hydraulic pump motor assembly is drivingly connected to the hydraulic control unit 4.

[0031] Specifically, the 19-core high-voltage plug 2-3 is provided with a positioning hole, which is positioned with the first coil pin 2-4 of the balancing upper joint 2-9 and fixed to the balancing upper joint 2-9 through the pressure cap 2-1, wherein an O-ring is provided between the 19-core high-voltage plug 2-3 and the balancing upper joint 2-9 for sealing the balancing cavity and the electronic control unit 2; a one-way oil filling plug 2-6 and a first safety valve 2-7 are respectively provided on the side walls of the balancing upper joint 2-9, wherein the one-way oil filling plug 2-6 is provided with a one-way valve for disassembling the oil filling nozzle after oil filling to prevent hydraulic oil from overflowing; The piston assembly includes a first piston rod 2-10, a balancing piston 2-14 and a balancing spring 2-15; one end of the first piston rod 2-10 is inserted into the balancing upper joint 2-9, and a fifth O-ring 24 is provided between the balancing upper joint 2-9 and the inside thereof; the balancing piston 2-14 is sleeved on the first piston rod 2-10 through the balancing spring 2-15, and is used for when the balancing housing 2-11 is filled with hydraulic oil, the hydraulic oil can push the balancing piston 2-14 to move along the first piston rod 2-10; wherein the balancing piston 2-14 and the balancing housing are connected to each other. A first dustproof ring 2-12 is provided between the balance piston 2-14 and the first piston rod 2-10, which is used to scrape off debris between the balance piston 2-14 and the first piston rod 2-10; a second dustproof ring 2-13 is provided between the balance piston 2-14 and the first piston rod 2-10, which is used to scrape off debris between the piston 2-14 and the first piston rod 2-10; the hydraulic pump motor assembly includes a motor barrel 2-23, a coupling 2-19 and a hydraulic pump 2-20; the motor barrel 2-23 is fixed in the balance lower joint 2-18 by a connecting screw 2-16; the coupling 2-19 is provided on the motor barrel 2-23 Inside, the hydraulic pump 2-20 is fixed to the outside of the motor cylinder 2-23 by a number of first hexagon socket head screws 2-21, and the hydraulic pump 2-20 is drivingly connected to the hydraulic control unit 4; a DC brushless motor 2-17 is arranged in the motor cylinder 2-23; the DC brushless motor 2-17 is fixed in the motor cylinder 2-23 by a number of second hexagon socket head screws 2-22; the other end of the first piston rod 2-10 is connected to the hydraulic pump 2-20 via the output shaft of the DC brushless motor 2-17 and the coupling 2-19.

[0032] Specifically, according to Figure 4As shown, the hydraulic control unit 4 is provided with a valve group assembly 3-1, a working oil circuit, a return oil circuit and a main oil circuit; one end of the working oil circuit, the return oil circuit and the main oil circuit are connected to the hydraulic pump 2-20; the other end is connected to the anchor hydraulic cylinder integrated unit 6 through the connecting joint component 5 after passing through the valve group assembly 3-1; wherein the valve group assembly 3-1 includes a first one-way valve 3-2, a second safety valve 3-8, a first pressure sensor 3-11, a first two-position three-way normally open solenoid valve 3-14, a two-position A three-way normally closed solenoid valve 3-15, a second one-way valve 3-18, a second two-position three-way normally open solenoid valve 3-25, a second pressure sensor 3-26, a third safety valve 3-27 and a fourth safety valve 2-28; an oil guide joint 3-23 and a four-core plug 3-24 are provided in the hydraulic control unit 4 at one end close to the connecting joint component 5; the working oil circuit, the return oil circuit and the main oil circuit are connected to the anchor hydraulic cylinder integrated unit 6 through the oil guide joint 3-23 via the connecting joint component 5; the four-core plug 3-24 is connected to the connecting joint component 5.

[0033] Among them, according to Figure 4In the AA cross-sectional view, the first one-way valve 3-2 is fixed to the valve group assembly 3-1 by threaded connection, the valve core cover 3-3 is provided with a sixth O-ring 3-4 for sealing the pressure of the main oil circuit, and the valve core cover 3-3 is threadedly fixed to the valve group assembly 3-1; in the BB cross-sectional view, the second safety valve 3-8 is provided with an eighth O-ring 3-7 for sealing the seal between the working oil circuit and the return oil circuit, the safety valve cover 3-5 is provided with a seventh O-ring 3-6 for sealing the seal between the return oil circuit and the outside world, and the safety valve cover 3-5 is threadedly fixed to the valve group assembly 3-1 to form a whole; in the CC cross-sectional view, the first pressure sensor 3-11 is provided with an O-ring for sealing the seal between the working oil circuit and the return oil circuit, and the first pressure sensor 3-12 is provided with an O-ring for sealing the seal between the working oil circuit and the return oil circuit. The force sensor 3-11 is threadedly connected and fixed to the valve group assembly 3-1. The first solenoid valve cover 3-9 is provided with a ninth O-ring 3-10 for sealing the return oil circuit and the outside world. The first solenoid valve cover 3-9 is threadedly connected and fixed to the valve group assembly 3-1 to form a whole; DD cross-sectional view, the first normally open two-position three-way solenoid valve 3-14 is provided with two O-rings, one for sealing the seal between the working oil circuit and the return oil circuit, and the other for sealing the seal between the main oil circuit and the working oil circuit; the second solenoid valve cover 3-12 is provided with a tenth O-ring 3-13 for sealing the return oil circuit and the outside world. The second solenoid valve cover 3-12 is threadedly fixed to the valve group assembly 3-1 to form a whole; EE cross-sectional view, The two-position three-way normally closed solenoid valve 3-15 is provided with two O-rings, one for sealing the seal between the working oil circuit and the return oil circuit, and the other for sealing the seal between the main oil circuit and the working oil circuit; the solenoid valve cover 3-12 is provided with the tenth O-ring for sealing the seal between the return oil circuit and the outside world, and the second solenoid valve cover 3-12 is threadedly fixed to the valve group 3-1 as a whole; FF cross-sectional view, the second one-way valve 3-18 is composed of a valve seat, a valve core, a spring, and a valve cover. The second one-way valve 3-18 is provided with an O-ring for sealing the one-way conductivity of the main oil circuit oil, and the one-way valve seat 3-17 is provided with an eleventh O-ring 3-16 for sealing the seal between the return oil circuit and the outside world, and the one-way valve seat 3-17 is threadedly fixed to the valve group 3-1 as a whole; GG cross-sectional view, The second two-position three-way normally open solenoid valve 3-25 has the same structure as the first two-position three-way normally open solenoid valve 3-14; in the HH cross-sectional view, the second pressure sensor 3-26 has the same structure as the first pressure sensor 3-11; in the II cross-sectional view and the JJ cross-sectional view, the third safety valve 3-27 and the fourth safety valve 3-28 have the same structure as the second safety valve 3-8 respectively; in the KK cross-sectional view, the drain plug 20 is provided with a twelfth O-ring 3-19 for sealing between the oil return line and the external mud, and the drain plug 20 is threadedly connected and fixed on the valve group assembly 3-1; the center of the right end of the second limit screw assembly 3-1 of the valve group assembly has a 4-core plug 3-24, which is connected to the displacement sensor, and 3 oil guide joints 3-23, which supply oil to the actuator, and the oil guide joint 3-23 is designed with a thirteenth O-ring 3-22 for sealing;The first limit screw 3-21 is fixed on the valve group assembly 3-1. ;

[0034] Specifically, according to Figure 5 As shown, the connecting joint component 5 includes a second upper joint 4-10, a sealed oil pipe joint component 11 and a press sleeve 4-14; one end of the second upper joint 4-10 is connected to one end of the hydraulic control unit 4 through a second guide key 4-2 and a second split screw ring 4-4, and a fourteenth O-ring 4-1 is provided between the second upper joint 4-10 and the hydraulic control unit; the other end of the second upper joint 4-10 is connected to the anchoring hydraulic cylinder integrated unit 6, and a sixteenth O-ring 4-13 is provided between the second upper joint 4-10 and the anchoring hydraulic cylinder integrated unit 6; a second limit screw 4-15 is provided on the second upper joint 4-10, which is used to correspond to the first limit screw 3-21. One end of the sealed oil pipe joint component 11 is sleeved in the second upper joint 4-10, and the other end is fixed to the other end of the second upper joint 4-10 by a compression sleeve 4-14; a 4-core socket 4-3, a 4-core high-pressure plug 4-5 and a 4-core high-pressure socket 4-6 are in the second upper joint 4-10, and the 4-core socket 4-3 is used to connect with the 4-core plug 3-24; the 4-core high-pressure plug 4-5 is connected to the 4-core high-pressure socket 4-6, wherein a twenty-first O-ring 4-20 is provided between the 4-core high-pressure plug 4-5 and the second upper joint 4-10 for sealing high-pressure oil and low-pressure oil; the 4-core high-pressure plug 4-5 is connected to the sealed oil pipe joint component 11 by an internal hexagonal screw 4-9; the sealed oil pipe joint component 11 is connected to the working oil circuit, return oil circuit and main oil circuit in the hydraulic control unit 4, and is connected to the anchor hydraulic cylinder integrated unit 6 through the sealed oil pipe joint component 11. The sealing oil pipe joint component 4-11 is provided with four different specifications of O-rings for isolating the sealing oil circuits, wherein the four different specifications of O-rings include the seventeenth O-ring 4-16, the eighteenth O-ring 4-17, the nineteenth O-ring 4-18 and the twentieth O-ring 4-19.

[0035] Among them, an oil plug 4-7 is provided on the side wall of the second upper joint 4-10, and a fifteenth O-ring 4-8 is provided on the oil plug 4-7, which is used to seal the working oil circuit, return oil circuit and main oil circuit between the sealed oil pipe joint component 11 and the hydraulic control unit 4; the sealed oil pipe joint component 4-11 is limited by the second winding pin 4-12 and the inner hole notch of the second upper joint 4-10; the sealed oil pipe joint component 4-11 is provided with a potentiometer connecting tube, which is used for a displacement sensor.

[0036] Specifically, according to Figure 6As shown, the anchor hydraulic cylinder integrated unit 6 includes an anchor body 5-10, a hydraulic cylinder 5-15, a communicating vessel 5-21 and a connecting joint 5-24; one end of the anchor body 5-10 is connected to the connecting joint component 5, and the other end is connected to one end of the hydraulic cylinder 5-15, and the other end of the hydraulic cylinder 5-15 is connected to the connecting joint 5-24 through the communicating vessel 5-21; a fixed large tube 5-9 and a connecting limit ring 5-11 are sleeved in the anchor body 5-10; a twenty-third O-ring 5-7 and a twenty-fourth O-ring 5-8 are provided between the fixed large tube 5-9 and the anchor body 5-10; they are used to seal between the anchor body cavity and the piston large cavity; a large oil pipe 5-1 is sleeved in the fixed large tube 5-9; the large oil pipe 5-1 and the connecting joint component 5 connected; a piston 5-12, a small oil tube 5-14 and a second piston rod 5-16 are provided in the hydraulic cylinder 5-15; the small oil tube 5-14 is sleeved in the second piston rod 5-16 and is connected with the large oil tube 5-1; the piston 5-12 is sleeved on one end of the second piston rod 5-16, and a twenty-fifth O-ring 5-13 is provided between the piston 5-12 and the second piston rod 5-16, and the piston 5-12 abuts against the end of the anchor body 5-10; the other end of the second piston rod 5-16 is connected to the connecting joint 5-24 through a communicating vessel 5-21, and a sealing plug 5-23 is provided inside the end of the second piston rod 5-16 close to the connecting plug 5-24, and a twenty-ninth O-ring 5-22 is sleeved between the sealing plug 5-23 and the second piston rod 5-16.

[0037] Among them, the anchor body 5-10 is provided with multiple anchor claws 5-4 along the circumference of the inner wall; the anchor claw 5-4 is provided with a spring 5-5, and the spring 5-5 is provided with a second pressure plate 5-2, and the second pressure plate (5-2) is fixed to the anchor body 5-10 by a plurality of second screws 5-6, and a twenty-second O-ring 5-3 is provided in the anchor claw 5-4 for sealing the inner cavity from the external mud.

[0038] Among them, a twenty-sixth O-ring 5-17 is provided between the communicating vessel 5-21 and the hydraulic cylinder 5-15, and a twenty-eighth O-ring 5-20 is provided between the communicating vessel 5-21 and the second piston rod 5-16; a screw plug 5-19 is provided on the communicating vessel 5-21, and a twenty-seventh O-ring 5-18 is provided between the screw plug 5-19 and the communicating vessel 5-21.

[0039] In summary, the present invention provides a cable-type electric hydraulic multifunctional operating instrument, which forms a highly integrated system through the organic combination of an electronic control unit, a balancing power unit, a hydraulic control unit, a connecting joint component and an anchoring hydraulic cylinder integrated unit. This modular design is not only easy to install and maintain, but also improves the scalability and flexibility of the system, so that each component can be upgraded or replaced separately, reducing maintenance costs. The balancing power unit provides stable and efficient power for the hydraulic control unit, ensuring the stable operation of the hydraulic system. At the same time, the electronic control unit not only supplies power to the balancing power unit, but is also responsible for communicating with external signals, achieving precise control of the entire system and improving work efficiency and accuracy. The hydraulic control unit is closely connected to the anchoring hydraulic cylinder integrated unit through the connecting joint component, achieving stable anchoring and precise control of the hydraulic cylinder action. This hydraulic control method has the characteristics of fast response speed and high control accuracy, which can ensure the stability of anchoring and the reliability of hydraulic cylinder operation under various working conditions, and successfully complete the well operation.

[0040] Example 2 The present invention also provides a method for using a cable-type electric hydraulic multifunctional working instrument, the specific principle of which is as follows: The electric hydraulic multifunctional operating instrument is a highly integrated instrument in terms of mechanics and hydraulics. It also needs to meet the high temperature and high pressure environment underground. Therefore, it is filled with hydraulic oil to balance the pressure in the external environment to prevent the instrument from being damaged due to excessive external force.

[0041] The balancing power unit 3 provides hydraulic oil and is also used to balance the external pressure. The high-pressure oil is delivered to the hydraulic control unit through the balancing power unit 3 to realize the action of the anchoring unit and the lifting or pushing down action of the hydraulic piston. The anchoring unit fixes the downhole instrument inside the pipe string so that the instrument is fixed in the center. After the anchoring unit is anchored, it can withstand the axial force to provide fixed support for salvage. In this way, it can provide a reverse force to counteract the stuck instrument when the hydraulic piston is lifted or pushed down, solve the problem of the instrument being stuck, and smoothly lift the stuck instrument.

[0042] The safety valve RV0 in the oil tank balance unit is used as a release instrument because the pressure of the oil tank is too high. The safety valve RV0 is set to a pressure of 0.8Mp~1.3Mpa. When the internal oil tank pressure is higher than this value, part of the hydraulic oil will be released to the external environment. A special channel is set in the oil tank unit to connect to the external environment so that the internal environment pressure can reach a balanced state with the outside. The return spring of the oil tank balance piston adopts a tension spring structure, which can avoid failure caused by the return spring being exposed to the external corrosive environment.

[0043] The motor and hydraulic pump in the balancing power unit 3 are completely immersed in the balancing oil tank, which is conducive to the heat dissipation of the DC brushless motor M and the oil absorption of the hydraulic pump P when it is working, providing hydraulic power for the movement of the entire instrument. The hydraulic pressure is controlled by the solenoid valve of the hydraulic control unit 4 to anchor the execution position of each action and the piston movement. The DC brushless motor M inside the power unit drives the hydraulic pump P to output hydraulic oil, and a first one-way valve 3-2 is provided at the outlet of the pump. The setting of the first one-way valve 3-2 can isolate the pressure fluctuation of the high-pressure chamber caused by the hydraulic pulsation of the hydraulic pump P during operation, and prevent the system hydraulic pressure from flowing back to the hydraulic balancing unit due to the pressure difference when the hydraulic pump P stops, causing the system pressure to drop. The hydraulic control unit 4 delivers the hydraulic power provided by the balancing power unit 3 to the anchor and hydraulic cylinder piston unit as needed. The hydraulic control unit 4 uses three solenoid valves to distribute the hydraulic oil into three hydraulic oil circuits. One circuit is used to control the anchor unit. When the anchor is powered off, it is automatically reset by the spring. The other two circuits control the hydraulic cylinder piston to lift or push the unit.

[0044] The normal working sequence of the instrument is that the anchoring unit completes its work, and then the hydraulic cylinder piston is lifted or pushed down.

[0045] The anchoring unit works. According to the work needs, the ground supplies power to the first two-position three-way normally open solenoid valve 3-14 and the second two-position three-way normally open solenoid valve 3-25, and the two-position three-way normally closed solenoid valve 3-15 is not powered. At this time, when the oil circuit provides hydraulic oil to the anchoring push piston position, the piston moves outward. The ground control box shows that the salvage and anchoring pressures are slowly increasing at the same time. When the salvage set pressure is reached, it is necessary to lift the hydraulic piston, the first two-position three-way normally open solenoid valve 3-14 is powered off, or push the hydraulic piston, the two-position three-way normally closed solenoid valve 3-15 is powered. At this time, all three solenoid valves are powered. The second one-way valve 3-18 prevents the pressure of the anchoring oil circuit from dropping when the hydraulic cylinder piston is lifted or pushed down, because the pressure setting of the third safety valve 3-27 of the anchoring push oil circuit is higher than the fourth safety valve 3-28 of the push oil circuit. The third safety valve 3-27 is used to protect the system pressure of the anchoring push hydraulic oil circuit and determine the anchoring force of the anchor. The second pressure sensor 3-26 is used to monitor the system pressure change of the anchoring push oil circuit. When the anchor piston is reset, the second two-position three-position normally open solenoid valve 3-25 is de-energized, and the anchoring claw is retracted by the spring reset.

[0046] The anchor unit is a hydraulic push mechanism. Under the action of hydraulic pressure, high-pressure oil enters the anchor to move the anchor claws, which makes the anchor claws move. The anchor claws are pushed open until they contact the inner wall of the downhole pipe string, which can firmly fix the instrument on the inner wall of the pipe string and provide reverse force for the hydraulic cylinder piston to prevent the instrument from moving itself. Several anchor claws of the anchor unit are evenly distributed on a 360-degree circumference, and several anchor claws are linked at the same time, and the anchor claw group is opened or recovered together.

[0047] The main oil circuit is designed with a second safety valve 3-8 and a first pressure sensor 3-11 (salvage pressure). The first pressure sensor 3-11 can detect the pressure of the main oil circuit in real time. When the hydraulic cylinder is lifted, it is the lifting pressure, and when the hydraulic cylinder is pushed down, it is the pushing pressure. Because the hydraulic cylinder's pushing down area is larger than the lifting area when the hydraulic cylinder is lifted, a fourth safety valve 3-28 is designed for pushing down. The fourth safety valve 3-28 is used to ensure the safety of the pressure in the user's pushing down oil circuit to prevent the pressure from being too high, causing the load to be too large, resulting in the motor M being unable to drag.

[0048] Safety recovery system: When the instrument is powered off, each support arm will be recovered into the instrument housing under the action of the safety recovery system. The safety recovery system is set in the anchor unit. When the instrument cannot be powered, the two-position three-way normally closed solenoid valve 3-15 and the second two-position three-way normally open solenoid valve 3-25 push down the oil circuit and connect the anchoring oil circuit to the oil tank; the anchor unit safety recovery system resets the anchor piston.

[0049] In summary, the present invention provides a cable-type electro-hydraulic multifunctional operating instrument, including an upper protective cap, an electronic control unit, a balancing power unit, a hydraulic control unit, a connecting joint component, an anchor and a hydraulic cylinder unit, which constitute a cable-type electro-hydraulic multifunctional operating instrument. According to different operations, different execution modules can be carried to complete operations such as well clearing, lead printing, leak detection, and salvage. When the instrument is working, it sends instructions on the ground, and the downhole electronic section control system completes the downhole operation after receiving the signal. The ground control system with a human-computer interaction interface can detect and record the working status of the downhole instrument in real time: instrument depth, power supply voltage, power supply current, cable head voltage, instrument temperature, anchor pressure, main line pressure, hydraulic cylinder piston displacement, to ensure the stability and success rate of downhole operations.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A cable-type electric hydraulic multifunctional working instrument, characterized in that: It comprises an upper protective cap (1), an electronic control unit (2), a balancing power unit (3), a hydraulic control unit (4), a connecting joint component (5) and an anchoring hydraulic cylinder integrated unit (6); One end of the electronic control unit (2) is connected to an upper protective cap (1), and the upper protective cap (1) is used to protect the joint thread and sealing surface on the electronic control unit (2); The other end of the electronic control unit (2) is connected to one end of the balancing power unit (3) for supplying power to the balancing power unit (3) and for communicating with external signals; The other end of the balancing power unit (3) is connected to one end of the hydraulic control unit (4) for providing power to the hydraulic control unit (4); The other end of the hydraulic control unit (4) is connected to the anchor hydraulic cylinder integrated unit (6) via a connecting joint component (5), and is used to control the anchor hydraulic cylinder integrated unit (6) via the hydraulic control unit (4).

2. A cable-type electric-hydraulic multifunctional working instrument according to claim 1, characterized in that: The electronic control unit (2) comprises a first upper connector (1-4) and a circuit housing (1-8); One end of the first upper joint (1-4) is connected to the upper protective cap (1), and the other end is threadedly connected to one end of the circuit housing (1-8), wherein an anti-rotation washer (1-5) and a first O-ring (1-6) are sleeved at the connection between the first upper joint (1-4) and the circuit housing (1-8); the other end of the circuit housing (1-8) is internally threadedly provided with a positioning keyway for threaded connection with the balancing power unit (3); A high-pressure sealing needle (1-1) is provided in the first upper joint (1-4); a first pressing plate (1-3) is provided on the high-pressure sealing needle (1-1); the first pressing plate (1-3) is fixed to the first upper joint (1-4) by means of a plurality of hexagon socket head screws (1-2); A circuit integrated unit is arranged inside the circuit housing (1-8); one end of the circuit integrated unit is connected to the high-pressure sealing needle (1-1), and the other end is connected to an internal unit of the balancing power unit (3).

3. A cable-type electric-hydraulic multifunctional working instrument according to claim 2, characterized in that: The circuit integrated unit comprises a circuit housing (1-8); An electronic skeleton (1-7) is arranged inside the circuit housing (1-8); an isolation circuit, a downhole power supply board, a filter board, a main control circuit board, a modulation and demodulation, and a hydraulic pump DC motor drive module are fixedly arranged on the electronic skeleton (1-7); the upper single-core section of the electronic skeleton (1-7) is connected to the high-pressure sealing needle (1-1); a second O-ring (1-12) and a third O-ring (1-13) are arranged between the upper single-core section of the electronic skeleton (1-7) and the first upper joint (1-4), which are used to support the electronic skeleton (1-7); a 19-core socket (1-11) is fixedly arranged at the lower end of the electronic skeleton (1-7) via a hexagon socket cylindrical end set screw (1-9); and the 19-core socket (1-11) is connected to an internal unit of a balancing power unit (3) via a first screw (1-10).

4. A cable-type electric-hydraulic multifunctional working instrument according to claim 3, characterized in that: The balancing power unit (3) comprises a balancing upper joint (2-9), a balancing housing (2-11), a balancing lower joint (2-18), a 19-core high-pressure plug (2-3) arranged in the balancing upper joint (2-9), a piston assembly arranged in the balancing housing (2-11), and a hydraulic pump motor assembly arranged in the balancing lower joint (2-18); The two ends of the balancing upper joint (2-9) and the balancing lower joint (2-18) are respectively provided with a first guide key (2-2) and a first split screw ring (2-5); wherein one end of the balancing upper joint (2-9) is threadedly connected to the circuit housing (1-8) through the first guide key (2-2) and the first split screw ring (2-5), and the other end is connected to one end of the balancing housing (2-11) through the first guide key (2-2) and the first split screw ring (2-5); wherein a fourth O-ring (2-8) is provided between the balancing upper joint (2-9) and the balancing housing (2-11) for sealing the internal hydraulic oil and external mud between the balancing housing (2-11); one end of the balancing lower joint (2-18) is connected to the other end of the balancing housing (2-11) through the first guide key (2-2) and the first split screw ring (2-5); and the other end is connected to the hydraulic control unit (4) through the first guide key (2-2) and the first split screw ring (2-5); The 19-core high-pressure plug (2-3) is plugged and connected to the 19-core socket (1-11); one end of the piston assembly is plugged into the balancing upper joint (2-9), and the other end is connected to the hydraulic pump motor assembly, and the hydraulic pump motor assembly is drivingly connected to the hydraulic control unit (4).

5. A cable-type electric-hydraulic multifunctional working instrument according to claim 4, characterized in that: The 19-core high-voltage plug (2-3) is provided with a positioning hole, the positioning hole and the first coil pin (2-4) of the balancing upper joint (2-9) are positioned and arranged, and are fixed to the balancing upper joint (2-9) through a pressure cap (2-1), wherein an O-ring is provided between the 19-core high-voltage plug (2-3) and the balancing upper joint (2-9) for sealing the balancing cavity and the electronic control unit (2); a one-way oil filling plug (2-6) and a first safety valve (2-7) are respectively provided on the side wall of the balancing upper joint (2-9), wherein the one-way oil filling plug (2-6) is provided with a one-way valve for removing the oil filling nozzle after oil filling to prevent hydraulic oil from overflowing; The piston assembly comprises a first piston rod (2-10), a balancing piston (2-14) and a balancing spring (2-15); One end of the first piston rod (2-10) is inserted into the balancing upper joint (2-9), and a fifth O-ring (24) is provided between the first piston rod (2-10) and the inside of the balancing upper joint (2-9); the balancing piston (2-14) is sleeved on the first piston rod (2-10) via a balancing spring (2-15), and is used for the hydraulic oil to push the balancing piston (2-14) to move along the first piston rod (2-10) when the balancing housing (2-11) is filled with hydraulic oil; a first dustproof ring (2-12) is provided between the balancing piston (2-14) and the balancing housing (2-11), and is used for scraping off debris between the balancing housing (2-11); a second dustproof ring (2-13) is provided between the balancing piston (2-14) and the first piston rod (2-10), and is used for scraping off debris between the piston (2-14) and the first piston rod (2-10); The hydraulic pump motor assembly comprises a motor barrel (2-23), a coupling (2-19) and a hydraulic pump (2-20); The motor cylinder (2-23) is sleeved and fixed in the balancing lower joint (2-18) by means of connecting screws (2-16); The coupling (2-19) is arranged in the motor cylinder (2-23), the hydraulic pump (2-20) is fixed to the outside of the motor cylinder (2-23) via a plurality of first hexagonal cylindrical head screws (2-21), and the hydraulic pump (2-20) is drivingly connected to the hydraulic control unit (4); A brushless DC motor (2-17) is arranged in the motor barrel (2-23); the brushless DC motor (2-17) is fixed in the motor barrel (2-23) via a plurality of second hexagonal cylindrical head screws (2-22); the other end of the first piston rod (2-10) is connected to a hydraulic pump (2-20) via an output shaft of the brushless DC motor (2-17) and a coupling (2-19).

6. A cable-type electric-hydraulic multifunctional working instrument according to claim 5, characterized in that: The hydraulic control unit (4) is provided with a valve group assembly (3-1), a working oil circuit, an oil return circuit and a main oil circuit; one end of the working oil circuit, the oil return circuit and the main oil circuit are connected to a hydraulic pump (2-20); the other end passes through the valve group assembly (3-1) and is connected to an anchor hydraulic cylinder integrated unit (6) via a connecting joint component (5); The valve group assembly (3-1) comprises a first one-way valve (3-2), a second safety valve (3-8), a first pressure sensor (3-11), a first two-position three-way normally open solenoid valve (3-14), a two-position three-way normally closed solenoid valve (3-15), a second one-way valve (3-18), a second two-position three-way normally open solenoid valve (3-25), a second pressure sensor (3-26), a third safety valve (3-27) and a fourth safety valve (2-28) which are arranged in sequence along the working oil circuit, the return oil circuit and the main oil circuit; wherein the first two-position three-way normally open solenoid valve (3-14) and the second two-position three-way normally open solenoid valve (3-25) are used to control the lifting or pushing action of the hydraulic cylinder piston in the anchor hydraulic cylinder integrated unit (6); the two-position three-way normally closed solenoid valve (3-15) is used to control the anchor unit in the anchor hydraulic cylinder integrated unit (6); when the anchor is powered off, it is automatically reset by a spring; An oil guide joint (3-23) and a (4) core plug (3-24) are provided in one end of the hydraulic control unit (4) close to the connecting joint component (5); the working oil circuit, the return oil circuit and the main oil circuit are connected to the anchor hydraulic cylinder integrated unit (6) via the oil guide joint (3-23) and the connecting joint component (5); and the (4) core plug (3-24) is connected to the connecting joint component (5).

7. A cable-type electric-hydraulic multifunctional working instrument according to claim 6, characterized in that: The connecting joint component (5) comprises a second upper joint (4-10), a sealed oil pipe joint component (11) and a compression sleeve (4-14); One end of the second upper joint (4-10) is connected to one end of the hydraulic control unit via a second guide key (4-2) and a second split screw ring (4-4), and a fourteenth O-ring (4-1) is provided between the second upper joint and the hydraulic control unit; One end of the sealed oil pipe joint component (11) is sleeved in the second upper joint (4-10), and the other end is fixed to the other end of the second upper joint (4-10) via a press sleeve (4-14); The second upper joint (4-10) includes a 4-core socket (4-3), a 4-core high-voltage plug (4-5) and a 4-core high-voltage socket (4-6), wherein the 4-core socket (4-3) is used to connect to the 4-core plug (3-24); the 4-core high-voltage plug (4-5) is connected to the 4-core high-voltage socket (4-6), wherein a twenty-first O-ring (4-20) is provided between the 4-core high-voltage plug (4-5) and the second upper joint (4-10) for sealing high-pressure oil and low-pressure oil; the 4-core high-voltage plug (4-5) is connected to the sealing oil pipe joint component (11) via an internal hexagonal screw (4-9); The sealed oil pipe joint component (11) is in communication with the working oil circuit, the oil return circuit and the main oil circuit in the hydraulic control unit (4), and is connected to the anchor hydraulic cylinder integrated unit (6) via the sealed oil pipe joint component (11); An oil plug (4-7) is provided on the side wall of the second upper joint (4-10), and a fifteenth O-ring (4-8) is provided on the oil plug (4-7) for sealing the working oil circuit, the oil return circuit and the main oil circuit between the sealing oil pipe joint component (11) and the hydraulic control unit (4); The sealed oil pipe joint component (4-11) is limited in position by cooperating with the inner hole notch of the second upper joint (4-10) through the second rolling pin (4-12); the sealed oil pipe joint component (4-11) is provided with a potentiometer connecting tube for a displacement sensor.

8. The cable-type electric-hydraulic multifunctional working instrument according to claim 1, characterized in that: The anchor hydraulic cylinder integrated unit (6) comprises an anchor body (5-10), a hydraulic cylinder (5-15), a connecting vessel (5-21) and a connecting joint (5-24); One end of the anchor body (5-10) is connected to the connecting joint component (5), and the other end is connected to one end of the hydraulic cylinder (5-15); the other end of the hydraulic cylinder (5-15) is connected to the connecting joint (5-24) via a connecting vessel (5-21); The anchor body (5-10) is provided with a fixed large tube (5-9) and a connecting limit ring (5-11) in the sleeve; a twenty-third O-ring (5-7) and a twenty-fourth O-ring (5-8) are provided between the fixed large tube (5-9) and the anchor body (5-10); the rings are used to seal between the anchor body cavity and the piston cavity; the fixed large tube (5-9) is provided with an oil-passing large tube (5-1) in the sleeve; the oil-passing large tube (5-1) is connected to the connecting joint component (5); The hydraulic cylinder (5-15) is provided with a piston (5-12), a small oil pipe (5-14) and a second piston rod (5-16); The small oil-passing tube (5-14) is sleeved inside the second piston rod (5-16) and is connected to the large oil-passing tube (5-1); The piston (5-12) is sleeved on one end of the second piston rod (5-16) and abuts against the end of the anchor body (5-10); The other end of the second piston rod (5-16) is connected to the connecting joint (5-24) via a connecting vessel (5-21), and a sealing plug (5-23) is provided inside the end of the second piston rod (5-16) close to the connecting plug (5-24), and a twenty-ninth O-ring (5-22) is sleeved between the sealing plug (5-23) and the second piston rod (5-16).

9. A cable-type electric-hydraulic multifunctional working instrument according to claim 8, characterized in that: The anchor body (5-10) is provided with a plurality of anchor claws (5-4) along the circumference of the inner wall; a spring (5-5) is provided on the anchor claw (5-4), a second pressure plate (5-2) is provided on the spring (5-5), the second pressure plate (5-2) is fixed to the anchor body (5-10) by a plurality of second screws (5-6), and a twenty-second O-ring (5-3) is provided in the anchor claw (5-4) for sealing the inner cavity from external mud; A twenty-sixth O-ring (5-17) is provided between the communicating vessel (5-21) and the hydraulic cylinder (5-15), and a twenty-eighth O-ring (5-20) is provided between the communicating vessel (5-21) and the second piston rod (5-16); A screw plug (5-19) is provided on the communicating vessel (5-21), and a twenty-seventh O-ring (5-18) is provided between the screw plug (5-19) and the communicating vessel (5-21).

10. A method for using a cable-type electric-hydraulic multifunctional working instrument, based on the cable-type electric-hydraulic multifunctional working instrument according to any one of claims 1 to 9, characterized in that: The process includes the following: The balancing power unit (3) is powered by the electronic control unit (2) and controlled by signals from the outside world. The hydraulic power of the balancing power unit (3) is transmitted to the anchoring hydraulic cylinder integrated unit (6) through the hydraulic control unit (4) and the connecting joint component (5) as needed, and the operation of the anchoring unit and the hydraulic cylinder in the anchoring hydraulic cylinder integrated unit (6) is controlled.

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