Control devices and systems for pressurized working equipment

Abstract

The present invention provides a control device and system for pressure-operated equipment, comprising: a fuel tank, a power module, a hydraulic valve module and a control module; the fuel tank is connected to the power module, and the hydraulic valve module is respectively connected to the power module, the control module and the pressure-operated equipment; wherein the power module is used to absorb the hydraulic oil stored in the fuel tank and pump the absorbed hydraulic oil into the hydraulic valve module; the hydraulic valve module is used to adjust the direction, pressure and flow of the hydraulic oil under the control of the control module, and transport the hydraulic oil to the pressure-operated equipment to control the operation of the pressure-operated equipment. The control device and system for pressure-operated equipment provided by the present invention realize automatic control of the pressure-operated equipment.

Description

Technical Field

[0001] The invention relates to the field of oil production, and in particular to a control device and system for pressure-operated equipment. Background Art

[0002] Pressure operation is the process of drilling, completion, workover or other measures under the condition of pressure in oil, gas and water wells, operated by professional technicians with special system supporting equipment. Since pressure operation does not require well killing and pressure relief, it can effectively maintain formation pressure, reduce damage to the formation, shorten downtime, resume production in advance, and minimize the impact of oil, gas and water well operations on production; at the same time, pressure operation can solve the environmental pollution problems caused by oil, gas and water well operations from the source. Therefore, this technology is widely used in the construction of shale gas wells, abnormally high-pressure wells, and difficult wells in unconventional oil fields and oil fields in sensitive areas.

[0003] When the existing pressurized working equipment is working, experienced professionals are required to manually assist in the operation. Due to the complicated steps, the staff need to frequently control the pressurized working equipment, which results in a heavy workload for the staff. Summary of the invention

[0004] The invention provides a control device and a system for pressure-operated equipment to realize automatic control of the pressure-operated equipment.

[0005] A first aspect of the present invention provides a control device for pressure-operated equipment, comprising:

[0006] Fuel tank, power module, hydraulic valve module and control module;

[0007] The oil tank is connected to the power module, and the hydraulic valve module is respectively connected to the power module, the control module, and the pressure working equipment;

[0008] Wherein, the power module is used to absorb the hydraulic oil stored in the oil tank and pump the absorbed hydraulic oil into the hydraulic valve module;

[0009] The hydraulic valve module is used to adjust the direction, pressure and flow of the hydraulic oil under the control of the control module, and to deliver the hydraulic oil to the pressure-operating equipment to control the operation of the pressure-operating equipment.

[0010] Optionally, the oil tank is also connected to the hydraulic valve module;

[0011] The pressure working equipment is also used to transport the hydraulic oil back to the hydraulic valve module;

[0012] The control module is also used to control the hydraulic valve module to transport the hydraulic oil delivered by the pressure working equipment back to the oil tank.

[0013] Optionally, it also includes: a cooler and an oil return filter;

[0014] The oil inlet of the cooler is connected to the hydraulic control module, the oil outlet of the cooler is connected to the oil inlet of the return oil filter, and the oil outlet of the return oil filter is connected to the oil tank;

[0015] The cooler is used to cool the hydraulic oil delivered by the hydraulic valve module to the oil tank;

[0016] The return oil filter is used to filter the hydraulic oil delivered by the hydraulic valve module to the oil tank.

[0017] Optionally, it also includes: an air filter;

[0018] The air filter is installed on the oil tank and communicated with the inside of the oil tank. The air filter is used to balance the air pressure inside and outside the oil tank and filter the air entering the oil tank.

[0019] Optionally, the power module includes: a motor, a coupling and a plunger pump;

[0020] The coupling is connected to the motor and the plunger pump respectively, and the plunger pump is connected to the oil tank and the hydraulic valve module respectively;

[0021] The coupling is used to transmit the power generated by the motor to the plunger pump;

[0022] The plunger pump is used to absorb the hydraulic oil from the oil tank and pump the hydraulic oil into the hydraulic valve module.

[0023] Optionally, the hydraulic valve module comprises: two hydraulic integrated blocks, ten hydraulic valves, a pressure gauge and a rack;

[0024] The two hydraulic integrated blocks are both installed on the frame, and each hydraulic integrated block is installed with five hydraulic valves;

[0025] The pressure gauge is connected to one of the hydraulic integrated blocks.

[0026] Optionally, the control module is connected to each of the hydraulic valves;

[0027] The control module is used to control the pressure of each hydraulic valve respectively.

[0028] Optionally, the frame includes: a support assembly and two three-way pipe joints;

[0029] The support assembly is used to fix the two hydraulic integrated blocks;

[0030] The first oil inlet of the first three-way pipe joint is connected to the plunger pump, the first oil outlet of the first three-way pipe joint is connected to the first hydraulic integrated block, and the second oil outlet of the three-way pipe joint is connected to the second hydraulic integrated block;

[0031] The third oil outlet of the second three-way pipe joint is connected to the oil inlet of the cooler, the second oil inlet of the second three-way pipe joint is connected to the first hydraulic integrated block, and the third oil inlet of the three-way pipe joint is connected to the second hydraulic integrated block.

[0032] Optionally, a fourth oil inlet and a fourth oil outlet are provided on the first surface of the first hydraulic integrated block;

[0033] The fourth oil inlet is connected to the first oil outlet of the first three-way pipe joint;

[0034] The fourth oil outlet is connected to the second oil inlet of the second three-way pipe joint;

[0035] Five groups of pressure working equipment connection ports are arranged on the second surface of the first hydraulic integrated block, and the pressure working equipment connection ports are connected to the pressure working equipment;

[0036] Each group of the pressure working equipment connection ports includes: a fifth oil inlet and a fifth oil outlet;

[0037] The third surface of the first hydraulic integrated block is provided with five groups of hydraulic valve connection ports, the hydraulic valve connection ports are connected to the hydraulic valves, and the second surface is parallel to the third surface;

[0038] Each group of the hydraulic valve connection ports includes: a sixth oil inlet, a sixth oil outlet and two working oil ports.

[0039] A second aspect of the present invention provides a pressure-operating system, comprising: pressure-operating equipment and a control device for the pressure-operating equipment according to the first aspect;

[0040] The control device of the pressure working equipment is connected to the pressure working equipment, and the control device of the pressure working equipment is used to control the operation of the pressure working equipment through hydraulic oil.

[0041] The control device and system of the pressure working equipment provided by the present invention pump the hydraulic oil stored in the oil tank into the hydraulic valve module through the power module, control the hydraulic oil module to adjust the direction, pressure and flow of the hydraulic oil through the control module, and transport the hydraulic oil to the pressure working equipment to control the operation of the pressure working equipment, thereby realizing automatic control of the pressure working equipment and reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 A schematic structural diagram of a control device for pressure-operated equipment provided by an embodiment of the present invention;

[0044] Figure 2 A left side view of a control device for pressure working equipment provided by an embodiment of the present invention;

[0045] Figure 3 A top view of a control device for pressure-operated equipment provided by an embodiment of the present invention;

[0046] Figure 4 A structural schematic diagram of a hydraulic valve module provided by an embodiment of the present invention;

[0047] Figure 5 A left side view of a hydraulic valve module provided by an embodiment of the present invention;

[0048] Figure 6 A front view of a hydraulic integrated block provided by an embodiment of the present invention;

[0049] Figure 7 A rear view of a hydraulic integrated block provided by an embodiment of the present invention;

[0050] Figure 8 A workflow diagram of a pressure-operated equipment provided by an embodiment of the present invention;

[0051] Fig. 9 A workflow diagram of a pressure-operated equipment provided in an embodiment of the present invention.

[0052] Reference numerals:

[0053] 100-Control device for pressure working equipment;

[0054] 110 - fuel tank;

[0055] 120-power module;

[0056] 130-Hydraulic valve module;

[0057] 140-control module;

[0058] 150-cooler;

[0059] 160-return oil filter;

[0060] 170-Air filter;

[0061] 121-motor;

[0062] 122-coupling;

[0063] 123- plunger pump;

[0064] 131-Hydraulic integrated block;

[0065] 132-Hydraulic valve;

[0066] 133-pressure gauge;

[0067] 134- rack;

[0068] 1341-Support assembly;

[0069] 1342-first three-way pipe joint;

[0070] 1343-second three-way pipe joint;

[0071] 310-first oil inlet;

[0072] 311- second oil inlet;

[0073] 312- third oil inlet;

[0074] 313-Fourth oil inlet;

[0075] 314- fifth oil inlet;

[0076] 315-sixth oil inlet;

[0077] 320-first oil outlet;

[0078] 321-second oil outlet;

[0079] 322-the third oil outlet;

[0080] 323- fourth oil outlet;

[0081] 324- fifth oil outlet;

[0082] 325-sixth oil outlet;

[0083] 330-Working oil port. DETAILED DESCRIPTION

[0084] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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 are within the scope of protection of the present invention.

[0085] In the description of the present invention, it is necessary to understand that the terms used such as “center”, “length”, “width”, “thickness”, “top”, “bottom”, “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, “circumferential”, etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred position or component must have a specific direction, a specific structure and operation, and therefore cannot be understood as limiting the present invention.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or can communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, so that the internal communication of two elements or the interaction relationship between two elements can be achieved. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0089] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0090] The technical solution of this application is described in detail below:

[0091] The following first introduces the application scenarios of the embodiments of the present application. The pressure operation equipment can be applied to underbalanced drilling, side drilling, small hole drilling, completion, perforation, oil testing, testing, acidizing, fracturing and well repair operations. The control device of the pressure operation equipment can be connected to the pressure operation equipment, and the direction, pressure and flow rate of the hydraulic oil delivered to the pressure operation equipment are adjusted to control the operation of the pressure operation equipment, so as to reduce the workload of the staff.

[0092] Figure 1 A schematic structural diagram of a control device for pressure-operated equipment provided in an embodiment of the present invention.

[0093] Please refer to Figure 1 , a control device 100 for pressure working equipment, comprising:

[0094] Oil tank 110, power module 120, hydraulic valve module 130 and control module 140;

[0095] The oil tank 110 is connected to the power module 120, and the hydraulic valve module 130 is respectively connected to the power module 120, the control module 140, and the pressure working equipment;

[0096] The power module 120 is used to absorb the hydraulic oil stored in the oil tank 110 and pump the absorbed hydraulic oil into the hydraulic valve module 130;

[0097] The hydraulic valve module 130 is used to adjust the direction, pressure and flow of the hydraulic oil under the control of the control module 140, and to deliver the hydraulic oil to the pressure-operating equipment to control the operation of the pressure-operating equipment.

[0098] Optionally, the oil tank 110 is also connected to the hydraulic valve module 130;

[0099] The pressure working equipment is also used to transport the hydraulic oil back to the hydraulic valve module 130;

[0100] The control module 140 is further used to control the hydraulic valve module 130 to transport the hydraulic oil transported back by the pressure working equipment back to the oil tank 110 .

[0101] In practical applications, the motor 121 can be used to drive the plunger pump 123, and the plunger pump 123 sucks oil from the oil tank 110 and then pumps oil. The hydraulic oil is adjusted in direction, pressure, and flow by the hydraulic valve 132 through the hydraulic integrated block 131 and then transmitted to the oil cylinder of the pressure working equipment through the external pipeline. The control module 140 uses the S7-200 programmable logic controller (PLC) as the controller of the control device 100 of the pressure working equipment to realize automatic control of the pressure working equipment.

[0102] Optionally, the oil tank 110 is also connected to the hydraulic valve module 130;

[0103] The pressure working equipment is also used to transport the hydraulic oil back to the hydraulic valve module 130;

[0104] The control module 140 is also used to control the hydraulic valve module 130 to transport the hydraulic oil delivered by the pressure working equipment back to the oil tank 110, thereby transporting the hydraulic oil delivered by the hydraulic valve module 130 to the pressure working equipment back to the oil tank 110, thereby realizing the recycling of the hydraulic oil.

[0105] In practical applications, the control module 140 of the control device 100 for pressure-operated equipment may include a human-machine interaction unit, a main controller unit, and a frequency converter adjustment unit.

[0106] Among them, the human-computer interaction unit uses Wincc Flexible (a machine-oriented automation software) configuration software installed on the host computer. In actual operation, the staff can observe the pressure change value of the pressure-carrying equipment during operation, and whether the first to fourth sensors detect the hoop through the display screen, and then change the proportional, integral, and differential control parameters to realize human-computer interaction.

[0107] The main control unit is the core part of this device, and can adopt Siemens S7-200 226CN programmable logic controller, which uses its own PID operator to control the start and stop of the program, and outputs analog signals to the frequency converter.

[0108] The frequency converter adjustment unit is the execution device of this device, which is used to adjust the oil supply speed of the plunger pump 123 and receive the analog signal converted from the PID operation output signal. This analog signal is used to change the output frequency of the frequency converter unit, thereby changing the speed of the motor 121, and finally providing a suitable flow rate to allow the pressure-carrying equipment to work normally and smoothly.

[0109] Optionally, the power module 120 includes: a motor 121, a coupling 122 and a plunger pump 123;

[0110] The coupling 122 is connected to the motor 121 and the plunger pump 123 respectively, and the plunger pump 123 is connected to the oil tank 110 and the hydraulic valve module 130 respectively;

[0111] The coupling 122 is used to transmit the power generated by the motor 121 to the plunger pump 123;

[0112] The plunger pump 123 is used to absorb the hydraulic oil from the oil tank 110 and pump the hydraulic oil into the hydraulic valve 132 module 130 .

[0113] In practical applications, for motor 121, since the pressure-operating equipment control device needs to expand the speed regulation range with constant power and adopts a position closed-loop system control, it is a mechatronics product that requires high precision and high speed. Therefore, a squirrel cage three-phase asynchronous motor can be selected.

[0114] Specifically, for a fluid pump load, the load mechanical power can be determined by Formula 1.

[0115]

[0116] In the zone, flow rate Q = 100L / min = 0.00167m 3 / s; total head H = 1.7m; specific gravity of liquid water γ = 8700N / m 3 ; Pump efficiency η1=0.48; η is the transmission device efficiency, direct connection is 0.95~1.0, belt drive is 0.9, here η=0.95.

[0117] Therefore, the load power P L This can be determined as 0.541kW using Formula 1.

[0118] In addition, since the water pump should generally adopt continuous working system, a fully enclosed self-fan-cooled Y series motor can be selected. The motor model is Y80M1-4, P N =0.55kW, n=1390r / min, the speed is slightly lower than the load speed, but in fact due to P L <P N , n>n N ,Therefore, its speed error is within a reasonable range.

[0119] In addition, when the ambient temperature is 30° C., the power of the motor 121 can be corrected by Formula 2.

[0120]

[0121] Wherein, P is the power of motor 121, P Nis the rated power, θ is the ambient temperature, and k is the coefficient. Specifically, k = 0.6. Since the motor is of Class D insulation, θ max =90℃.

[0122] In summary, the Y80M1-4 motor can be selected. In addition, since the starting torque required by a general direct-connected water pump is very small, a general squirrel cage induction motor can meet its starting needs, so there is no need to verify the starting capacity.

[0123] In practical applications, the plunger pump 123 is selected in the control device 100 of the pressurized working equipment because of its high precision, good sealing performance, high working pressure and wide application.

[0124] Taking a specific example, since the technical requirements of the device require a hydraulic system rated pressure of 25MPa and a rated flow of 100L / min, a PV type axial variable piston pump 123 is selected, and its specific model may be PV16AD220, and its technical specifications are shown in Table 1.

[0125] Table 1

[0126] Rated pressure 35MPa Displacement 16ml / r flow 24L / min Maximum input power 15.5kW

[0127] The control device for the pressurized working equipment provided in the present embodiment pumps the hydraulic oil stored in the oil tank into the hydraulic valve module through the power module, controls the hydraulic oil module to adjust the direction, pressure and flow of the hydraulic oil through the control module, and delivers the hydraulic oil to the pressurized working equipment to control the operation of the pressurized working equipment, thereby realizing automatic control of the pressurized working equipment and reducing the workload of the staff.

[0128] Figure 2 A left side view of a control device for pressure working equipment provided by an embodiment of the present invention; Figure 3 A top view of a control device for pressure-operated equipment provided in an embodiment of the present invention.

[0129] Please refer to Figure 3 and Figure 4 The control device 100 for the pressure working equipment further comprises:

[0130] Cooler 150 and oil return filter 160;

[0131] The oil inlet of the cooler 150 is connected to the hydraulic control module 140 , the oil outlet of the cooler 150 is connected to the oil inlet of the return oil filter 160 , and the oil outlet of the return oil filter 160 is connected to the oil tank 110 ;

[0132] The cooler 150 is used to cool the hydraulic oil delivered by the hydraulic valve module 130 to the oil tank 110;

[0133] The oil return filter 160 is used to filter the hydraulic oil delivered by the hydraulic valve module 130 to the oil tank 110 .

[0134] In the application, the cooler 150 can adopt an air cooler 150, and the hydraulic oil transported by the hydraulic valve module 130 to the oil tank 110 is forced to be cooled by air through a fan; the return oil filter 160 is selected by taking into account the flow and pressure required by the pressurized operation hydraulic control simulation device, and the RFA type micro return oil filter is selected, and its specific model may be RFA-100. Table 2 shows the technical specifications of the RFA-100 type micro return oil filter.

[0135] Table 2

[0136]

[0137] Optionally, the control device 100 for pressure working equipment further includes: an air filter 170;

[0138] The air filter 170 is installed on the oil tank 110 and communicated with the inside of the oil tank 110 . The air filter 170 is used to balance the air pressure inside and outside the oil tank 110 and filter the air entering the oil tank 110 .

[0139] In practical applications, water pollution in hydraulic oil is more harmful than solid particles, and water intrusion mainly occurs through the vent of oil tank 110. Part of the water vapor in the air dissolves into the oil, and part of the water vapor condenses into water droplets when it encounters the oil tank wall with a lower temperature and enters the oil. Therefore, a QLS type moisture-absorbing air filter can be used to effectively prevent water from entering the oil tank 110 and improve the reliability of the hydraulic system. The specific model is QLS1-1-10. Table 3 shows the technical specifications of the QLS1-1-10 air filter.

[0140] Table 3

[0141]

[0142] Figure 4 A schematic structural diagram of a hydraulic valve module provided in an embodiment of the present invention. Figure 5 A left side view of a hydraulic valve module provided by an embodiment of the present invention;

[0143] Please refer to Figure 4 and Figure 5 , the hydraulic valve module 130 comprises:

[0144] Two hydraulic integrated blocks 131, ten hydraulic valves 132, a pressure gauge 133 and a frame 134;

[0145] The two hydraulic integrated blocks 131 are both mounted on the frame 134 , and each hydraulic integrated block 131 is mounted with five hydraulic valves 132 ;

[0146] The pressure gauge 133 is connected to one of the hydraulic integrated blocks 131 .

[0147] In practical applications, DBW20-2 pilot relief valve and DR20-VM pilot pressure reducing valve can be selected for hydraulic valve 132. Electro-hydraulic directional valves require five two-position four-way electro-hydraulic directional valves and five three-position four-way directional valves, and their models are H-3WEH16 and H-4WEH16-S respectively.

[0148] The control module 140 is connected to each of the hydraulic valves 132;

[0149] The control module 140 is used to control the pressure of each hydraulic valve 132 respectively.

[0150] In actual application, ten hydraulic valves 132 are respectively connected to the lifting cylinder, floating slips, fixed slips, upper gate blowout preventer, lower gate blowout preventer, balanced pressure relief cross-way, wellhead safety blowout preventer, and annular blowout preventer on the pressurized working device, among which the lifting cylinder and the balanced pressure relief cross-way are each connected to two hydraulic valves 132.

[0151] Optionally, the frame 134 includes: a support assembly 1341 and two three-way pipe joints;

[0152] The support assembly 1341 is used to fix the two hydraulic integrated blocks 131;

[0153] The first oil inlet 310 of the first three-way pipe joint 1342 is connected to the plunger pump 123, the first oil outlet 320 of the first three-way pipe joint 1342 is connected to the first hydraulic integrated block 131, and the second oil outlet 321 of the three-way pipe joint is connected to the second hydraulic integrated block 131;

[0154] The third oil outlet 322 of the second three-way pipe joint 1343 is connected to the oil inlet of the cooler 150 , the second oil inlet 311 of the second three-way pipe joint 1343 is connected to the first hydraulic integrated block 131 , and the third oil inlet 312 of the three-way pipe joint is connected to the second hydraulic integrated block 131 .

[0155] In practical applications, the frame 134 can be installed with the hydraulic valve 132 , the hydraulic integrated block 131 and the pressure gauge 133 , so as to ensure the spatial position between the hydraulic integrated block 131 and the pipeline.

[0156] Figure 6 A front view of a hydraulic integrated block provided by an embodiment of the present invention; Figure 7A rear view of a hydraulic integrated block provided in an embodiment of the present invention.

[0157] In practical application, when designing the hydraulic integrated block 131, because the oil circuit is very complicated, two hydraulic integrated blocks 131 are designed. The model of the hydraulic integrated block 131 is as follows: Figure 6 and Figure 7 shown.

[0158] A fourth oil inlet 313 and a fourth oil outlet 323 are provided on the first surface of the first hydraulic integrated block 131;

[0159] The fourth oil inlet 313 is connected to the first oil outlet 320 of the first three-way pipe joint 1342;

[0160] The fourth oil outlet 323 is connected to the second oil inlet 311 of the second three-way pipe joint 1343;

[0161] The second surface of the first hydraulic integrated block 131 is provided with five groups of pressure working equipment connection ports, and the pressure working equipment connection ports are connected to the pressure working equipment;

[0162] Each group of the pressure working equipment connection ports includes: a fifth oil inlet 314 and a fifth oil outlet 324;

[0163] The third surface of the first hydraulic integrated block 131 is provided with five groups of hydraulic valve connection ports, the hydraulic valve connection ports are connected to the hydraulic valve 132, and the second surface is parallel to the third surface;

[0164] Each group of the hydraulic valve connection ports includes: a sixth oil inlet 315 , a sixth oil outlet 325 and two working oil ports 330 .

[0165] Optionally, the second hydraulic integrated block 131 has the same structure as the first hydraulic integrated block 131 .

[0166] The control device for the pressurized working equipment provided in the present embodiment pumps the hydraulic oil stored in the oil tank into the hydraulic valve module through the power module, controls the hydraulic oil module to adjust the direction, pressure and flow of the hydraulic oil through the control module, and delivers the hydraulic oil to the pressurized working equipment to control the operation of the pressurized working equipment, thereby realizing automatic control of the pressurized working equipment and reducing the workload of the staff.

[0167] The embodiment of the present invention also provides a pressure operation system, including: pressure operation equipment and Figure 1-4 A control device 100 for any of the above-mentioned pressure working equipment;

[0168] The control device 100 of the pressure-operating equipment is connected to the pressure-operating equipment, and the control device 100 of the pressure-operating equipment is used to control the operation of the pressure-operating equipment through hydraulic oil.

[0169] In actual application, the current working status of the pressurized working equipment can be observed through the display device on the control module 140 of the control device 100 of the pressurized working equipment, and then the pressurized working equipment can be continuously lifted and lowered as well as emergency braked by pressing buttons.

[0170] Figure 8 A workflow diagram of a pressure-operated equipment provided in an embodiment of the present invention.

[0171] Please refer to Figure 8 , Figure 8 The control process of the pressure-operated equipment automatically lifting the pipe string is as follows: when the control device 100 of the pressure-operated equipment starts to control the pressure-operated equipment to lift the pipe string, the lifting hydraulic cylinder moves upward, and when the tubing joint clamp contacts the first sensor, a detection signal is sent; the lifting hydraulic cylinder stops moving upward; at the same time, the upper ram blowout preventer is quickly closed, and after a delay of 3s, the outer diameter of the tubing string is sealed; the high-pressure balance valve is opened, and after a delay of 4s, the pressure difference between the upper and lower ram blowout preventers is compensated, and after the upper and lower chamber pressures of the upper and lower ram blowout preventers reach equilibrium, the lower ram blowout preventer is controlled to open; after a delay of 3s, the lifting hydraulic cylinder starts to move upward, and the tubing joint clamp passes through the lower ram blowout preventer smoothly. The lifting hydraulic cylinder starts to move upward, and the tubing joint clamp passes through the lower ram blowout preventer smoothly. The lifting hydraulic cylinder continues to move upward. When the second sensor detects the joint hoop, the lifting hydraulic cylinder stops. At the same time, the lower gate blowout preventer is quickly closed. After a delay of 3 seconds, the outer diameter of the oil pipe string is sealed. The high-pressure unloading valve is opened. After a delay of 4 seconds, the pressure difference is compensated. After the pressure of the upper and lower chambers of the upper and lower gate blowout preventers is balanced, the upper gate blowout preventer is controlled to open. After a delay of 3 seconds, the lifting hydraulic cylinder moves upward. Then, the next round of automatic control is repeated.

[0172] Fig. 9 A workflow diagram of a pressure-operated equipment provided in an embodiment of the present invention.

[0173] Please refer to Fig. 9 , Fig. 9The process of automatically lowering the pipe string for the pressure-operated equipment is as follows: when the worker starts the button for automatically lowering the pipe string on the control module 140 of the control device 100 of the pressure-operated equipment, the lifting hydraulic cylinder is lowered, and when the tubing joint clamp contacts the third sensor, a detection signal is issued; the lowering hydraulic cylinder stops descending; the lower gate blowout preventer is notified to close quickly, and after a delay of 3 seconds, the outer diameter of the tubing is sealed, and the high-pressure balance valve is opened, and after a delay of 4 seconds, the pressure difference between the upper and lower gate blowout preventers is compensated, and after the upper and lower chamber pressures of the upper and lower gate blowout preventers are balanced, the upper gate blowout preventer is controlled to open; after a delay of 3 seconds, the lifting hydraulic cylinder begins to lower, and the tubing joint clamp passes through the upper gate blowout preventer smoothly. The lifting hydraulic cylinder continues to lower, and when the fourth sensor detects the joint clamp, the lifting hydraulic cylinder stops; at the same time, the upper gate blowout preventer is quickly closed. After a delay of 3s, the outer diameter of the tubing string is sealed, the high-pressure unloading valve is opened, and after a delay of 4s, the pressure difference is compensated. After the pressure of the upper and lower chambers of the upper and lower gate blowout preventers is balanced, the lower gate blowout preventer is controlled to open; after a delay of 3s, the lifting hydraulic cylinder is lowered. Subsequently, the next round of automatic control is repeated.

[0174] In another possible implementation mode, when dangerous situations such as blowouts and shale gas (mainly alkane gas) leakage occur, emergency braking can be achieved, and the upper gate blowout preventer, lower gate blowout preventer and wellhead safety blowout preventer of the pressurized operating equipment can be closed in time through a preset program, thereby ensuring the safety of the lives of the operating site personnel and reducing the degree of damage to the facilities.

[0175] The control system of the pressurized working equipment provided in this embodiment, under the control of the control device 100 of the pressurized working equipment, realizes automatic lifting of the pipe string, automatic lowering of the pipe string and emergency braking of the pressurized working equipment, thereby reducing the workload of the staff, simplifying the work difficulty and improving safety.

[0176] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control device for pressure working equipment, characterized in that: include: Fuel tank, power module, hydraulic valve module and control module; The oil tank is connected to the power module, and the hydraulic valve module is respectively connected to the power module, the control module, and the pressure working equipment; Wherein, the power module is used to absorb the hydraulic oil stored in the oil tank and pump the absorbed hydraulic oil into the hydraulic valve module; The hydraulic valve module is used to adjust the direction, pressure and flow of the hydraulic oil under the control of the control module, and to deliver the hydraulic oil to the pressure-operating equipment to control the operation of the pressure-operating equipment; The control device further comprises a cooler and an oil return filter; the oil inlet of the cooler is connected to the control module, the oil outlet of the cooler is connected to the oil inlet of the oil return filter, and the oil outlet of the oil return filter is connected to the oil tank; the cooler is used to cool the hydraulic oil delivered to the oil tank by the hydraulic valve module; the oil return filter is used to filter the hydraulic oil delivered to the oil tank by the hydraulic valve module; The power module comprises: a motor, a coupling and a plunger pump; the coupling is connected to the motor and the plunger pump respectively, and the plunger pump is connected to the oil tank and the hydraulic valve module respectively; the coupling is used to transmit the power generated by the motor to the plunger pump; the plunger pump is used to draw the hydraulic oil from the oil tank and pump the hydraulic oil into the hydraulic valve module; The hydraulic valve module comprises: two hydraulic integrated blocks, ten hydraulic valves, a pressure gauge and a frame; the two hydraulic integrated blocks are both mounted on the frame, and each hydraulic integrated block is mounted with five hydraulic valves; the pressure gauge is connected to one of the hydraulic integrated blocks; the ten hydraulic valves are respectively connected to the lifting cylinder, the floating slip, the fixed slip, the upper gate blowout preventer, the lower gate blowout preventer, the balanced pressure relief cross-way, the wellhead safety blowout preventer, and the annular blowout preventer on the pressure working equipment, wherein the lifting cylinder and the balanced pressure relief cross-way are both connected to two hydraulic valves; The frame includes: a support assembly and two three-way pipe joints; the support assembly is used to fix the two hydraulic integrated blocks; the first oil inlet of the first three-way pipe joint is connected to the plunger pump, the first oil outlet of the first three-way pipe joint is connected to the first hydraulic integrated block, and the second oil outlet of the first three-way pipe joint is connected to the second hydraulic integrated block; the third oil outlet of the second three-way pipe joint is connected to the oil inlet of the cooler, the second oil inlet of the second three-way pipe joint is connected to the first hydraulic integrated block, and the third oil inlet of the second three-way pipe joint is connected to the second hydraulic integrated block.

2. The control device for pressure working equipment according to claim 1, characterized in that: The oil tank is also connected to the hydraulic valve module; The pressure working equipment is also used to transport the hydraulic oil back to the hydraulic valve module; The control module is also used to control the hydraulic valve module to transport the hydraulic oil delivered by the pressure working equipment back to the oil tank.

3. The control device for pressure working equipment according to claim 1, characterized in that: The control device also includes: an air filter; The air filter is installed on the oil tank and communicated with the inside of the oil tank. The air filter is used to balance the air pressure inside and outside the oil tank and filter the air entering the oil tank.

4. The control device for pressure working equipment according to claim 1, characterized in that: The control module is connected to each of the hydraulic valves; The control module is used to control the pressure of each hydraulic valve respectively.

5. The control device for pressure working equipment according to claim 1, characterized in that: A fourth oil inlet and a fourth oil outlet are arranged on the first surface of the first hydraulic integrated block; The fourth oil inlet is connected to the first oil outlet of the first three-way pipe joint; The fourth oil outlet is connected to the second oil inlet of the second three-way pipe joint; Five groups of pressure working equipment connection ports are arranged on the second surface of the first hydraulic integrated block, and the pressure working equipment connection ports are connected to the pressure working equipment; Each group of the pressure working equipment connection ports includes: a fifth oil inlet and a fifth oil outlet; The third surface of the first hydraulic integrated block is provided with five groups of hydraulic valve connection ports, the hydraulic valve connection ports are connected to the hydraulic valves, and the second surface is parallel to the third surface; Each group of the hydraulic valve connection ports includes: a sixth oil inlet, a sixth oil outlet and two working oil ports.

6. A pressure operation system, characterized in that: include: A pressure working equipment and a control device for the pressure working equipment according to any one of claims 1 to 5; The control device of the pressure working equipment is connected to the pressure working equipment, and the control device of the pressure working equipment is used to control the operation of the pressure working equipment through hydraulic oil.

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