A test platform for an oilfield soluble ball seat device

Abstract

This invention discloses a test platform for an oilfield soluble ball seat device, comprising a skid, a control console mounted on one side of the skid, an observation window on the control console, a heating device on the side of the control console near the observation window, a hydraulic system, an anchoring and pressure-bearing device, and a cantilever crane mounted on the upper center of the skid, and a test unit mounted on the upper side of the skid away from the observation window. The anchoring and pressure-bearing device is connected to the heating device and the test unit. The control console is electrically connected to the hydraulic system, the anchoring and pressure-bearing device, the cantilever crane, and the test unit. This invention integrates the soluble ball seat test project into a single integrated skid platform, with supporting hardware and software control systems. It occupies less space, is easy to lift and transport, facilitates verification of test control effects, makes test values ​​more accurate and reliable, and ensures safe and efficient operation.

Description

Technical Field

[0001] This invention belongs to the field of oilfield fracturing tool testing technology, and relates to a test platform for an oilfield soluble ball seat device. Background Technology

[0002] The new generation of volumetric fracturing tool, DMS (Dissolvable Metal Socket), is a key tool in the latest volumetric fracturing technology for oil and gas reservoir stimulation, centered on "soluble metal isolation and rapid post-fracturing dissolution." It completely replaces imported bridge plug tools, becoming the main tool for volumetric fracturing in oilfields and achieving post-fracturing wellbore cleaning-free operation. The DMS dissolvable ball seat fracturing tool is a new product that acts as an isolation layer in oil and gas wells. After fracturing and perforating the formation, the DMS dissolvable ball seat needs to dissolve automatically, allowing for wellhead restoration. Currently, in the manufacturing and quality improvement of the dissolvable ball seat, there are significant difficulties in conducting full-scale performance testing of the DMS dissolvable ball seat. Testing requires a large area, and the testing methods currently use simple devices for setting and pressure testing, resulting in inaccurate test results. This affects product quality, design improvements, and field application, and also poses significant safety risks. Summary of the Invention

[0003] The purpose of this invention is to provide a test platform for an oilfield soluble ball seat device, which solves the problems of large test area and inaccurate test results in the prior art.

[0004] The technical solution adopted in this invention is an oilfield soluble ball seat device test platform, including a skid, a measurement and control operating platform installed on one side of the skid, an observation window set on the measurement and control operating platform, a heating device set on the side of the measurement and control operating platform near the observation window, a hydraulic system, an anchoring and setting device and a pressure bearing device, and a cantilever crane set on the upper part of the middle of the skid, and a test unit set on the upper part of the side of the skid away from the observation window, respectively. The heating device, the test unit, and the measurement and control operating platform are electrically connected to the hydraulic system, the anchoring and setting device and the pressure bearing device, the cantilever crane, and the test unit.

[0005] The invention is further characterized in that,

[0006] The anchoring, setting, and pressure-bearing device includes a casing wellbore and a heated wellbore water jacket, with an annulus between them. A pressure-bearing device is installed on the wellbore, and a setting device is installed on the pressure-bearing device, with a hydraulic cylinder installed on the setting device. The anchoring, setting, and pressure-bearing device is used for soluble ball seat test installation, anchoring, setting, and pressure-bearing tests. The anchoring, setting, and pressure-bearing device includes two stations: an anchoring, setting test station and a pressure-bearing test station.

[0007] The test unit includes a dissolving tank, which is connected to a water tank, which is connected to a heating device. The water tank is mounted on a pressure testing pump system, which is connected to a pneumatic valve assembly. The anchoring and pressure-bearing device is connected to the pneumatic valve assembly and the pressure testing pump, respectively.

[0008] The measurement and control console is equipped with a programmable logic controller (PLC) acquisition module, an embedded industrial control all-in-one machine, and online sensors. The online sensors are installed on online equipment and pipelines, including pressure sensors, temperature sensors, load cells, and static pressure test pressure sensors.

[0009] The hydraulic system includes an oil tank, hydraulic pump, hydraulic valve block, solenoid valve, and filter.

[0010] The cantilever crane is controlled by a wireless remote control.

[0011] The melting tank is a stainless steel cylindrical tube with an external heating jacket, which is insulated. A load cell is installed at the bottom.

[0012] The pressure testing pump system is driven by a variable frequency motor.

[0013] The heating device uses electric heating to heat the circulating water and includes a hot water circulation pump, an electric heater, and control valves.

[0014] The pressure sensor measures the hydraulic cylinder inlet pressure, thereby controlling the anchoring and setting force; the temperature sensor measures the temperature of the heating circulating water, thereby controlling the test temperature of the pressure test and the test liquid temperature of the dissolution test; the load sensor is used to measure the weight change of the dissolution tank over time; and the static pressure test pressure sensor is installed on the pressure test pipeline of the pressure-bearing device.

[0015] The beneficial effects of this invention are as follows: This invention provides a test platform for soluble ball bearing devices in oilfields. Through an integrated skid-mounted platform, the soluble ball bearing test items are integrated into one unit, equipped with hardware and software control systems. Under conditions of power supply and clean water, type tests of soluble ball bearings can be conducted independently. This provides a reliable test platform for the design improvement, field testing, and construction application of soluble ball bearing products, thereby providing scientifically accurate process parameters for oilfield construction. It also saves test space and facilitates the movement of the test equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a test platform for an oilfield soluble ball seat device according to the present invention;

[0017] Figure 2 This is a top view of a test platform for an oilfield soluble ball seat device according to the present invention;

[0018] Figure 3 yes Figure 1 A schematic diagram of the structure along direction A.

[0019] In the diagram, 1. Measurement and control console, 2. Observation window, 3. Hydraulic system, 4. Anchoring and pressure bearing, 5. Cantilever crane, 6. Dissolution tank, 7. Pneumatic valve group, 8. Water tank, 9. Skid, 10. Heating device, 11. Pressure testing pump system. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] The present invention discloses the structure of an oilfield soluble ball seat device test platform, as follows: Figure 1 and 2 As shown, it includes a skid 9; a measurement and control console 1 is installed on the upper side of one side of the skid 9, an observation window 2 is set on the measurement and control console 1, a heating device 10 is set on the side of the measurement and control console 1 near the observation window 2, a hydraulic system 3, an anchoring and pressure bearing device 4, and a cantilever crane 5 are set on the upper middle part of the skid 9, and a test unit is set on the upper side of the skid 9 away from the side near the observation window 2. The anchoring and pressure bearing device 4 is electrically connected to the heating device 10, the test unit, and the measurement and control console 1, respectively.

[0022] The anchoring, setting, and pressure-bearing device 4 includes a casing wellbore and a heated wellbore water jacket, with an annulus between them. A pressure-bearing device is installed on the wellbore, and a setting device is installed on the pressure-bearing device, with a hydraulic cylinder mounted on the setting device. The anchoring, setting, and pressure-bearing device 4 is used for soluble ball seat test installation, anchoring, setting, and pressure-bearing tests. It includes two stations: an anchoring, setting test station and a pressure-bearing test station. The anchoring, setting, and pressure-bearing test is performed at the anchoring, setting, and pressure-bearing test station.

[0023] Hydraulic system 3 includes an oil tank, hydraulic pump, hydraulic valve block, solenoid valve, and filter, providing power to the hydraulic cylinders on the anchoring and setting device and the pressure bearing device. The cantilever crane 5 is responsible for hoisting all test pieces and test accessories during the testing process, and is controlled by a wireless remote controller.

[0024] The test unit includes a dissolving tank 6, which is connected to a water tank 8. The water tank 8 is connected to a heating device 10. The water tank 8 is mounted on a pressure testing pump system 11. The pressure testing pump system 11 is connected to a pneumatic valve group 7. The anchoring and pressure-bearing device 4 is connected to the pneumatic valve group 7 and the pressure testing pump 11, respectively.

[0025] The dissolving tank 6 is a stainless steel cylindrical tube with an external heating jacket and an external insulation cover. A load cell is installed at the bottom. The dissolving tank 6 is used for dissolving soluble ball seats in tests. Circulating hot water flows in the heating jacket, and the load cell records the weight change of the soluble ball seats in real time during the dissolution process, measuring the dissolution rate. The water tank 8 provides water for the pressure testing pump system 11 during pressure testing and also provides clean water to the dissolving tank 6. The medium for the pressure test is stored in the water tank 8. The pressure testing pump system 11 provides the liquid test pressure for the pressure test. It is driven by a variable frequency motor and controlled by a frequency converter, which can adjust the output flow rate in real time. The pneumatic valve group 7 is used to control the pressure holding and releasing during the pressure test.

[0026] The heating device 10 uses electric heating to heat the circulating water, and includes a hot water circulation pump, an electric heater, and control valves to provide circulating hot water for the pressure test and dissolution test of the soluble ball seat. The liquid test pressure for the pressure test is achieved through the test pump system 11. The pressure holding and depressurization of the anchoring and setting seal and the pressure-bearing device 4 are controlled by the pneumatic valve group 7. The liquid temperature in the anchoring and setting seal and the pressure-bearing device 4 and the dissolution tank 6 is achieved through the heating device 10.

[0027] The test parameters of the test unit are monitored and controlled by the control system in the measurement and control console 1. The measurement and control console 1 is equipped with a programmable logic controller (PLC) acquisition module, an embedded industrial control all-in-one machine, and online sensors. The online sensors are installed on online equipment and pipelines, including: pressure sensors, temperature sensors, load-bearing sensors, and static pressure test pressure sensors.

[0028] The pressure sensor measures the hydraulic cylinder inlet pressure and thus the anchoring and setting force; the temperature sensor measures the temperature of the heating circulating water and thus the test temperature for the pressure test and the test liquid temperature for the dissolution test; the load sensor measures the weight change of the dissolution tank 6 over time; and the static pressure test pressure sensor is installed on the pressure test pipeline of the pressure-bearing device to measure and control the pressure test pressure.

[0029] The online sensor measurement signals are acquired by the PLC acquisition module. The pressure and temperature of the pressure test are automatically controlled by programming. The anchoring and setting force and the weight of the dissolution tank are measured and the curves of their changes over time are plotted.

[0030] The working principle of the oilfield soluble ball seat device test platform of this invention is as follows: the control console 1 is responsible for the power distribution control and measurement control of all test equipment on the skid 9; the observation window 2 facilitates observation of the test process and ensures personal safety; the hydraulic system 3 provides power to the hydraulic cylinders on the anchoring and pressure bearing device 4; the cantilever crane 5 lifts the workpiece into the anchoring and pressure bearing device 4; the pressure testing pump system 11 provides the liquid test pressure for the pressure test of the anchoring and pressure bearing device 4; the pneumatic valve group 7 is used to control the pressure holding and pressure release of the pressure test; the water tank 8 stores the medium used for pressure testing; the dissolution tank 6 is responsible for the dissolution test of the soluble ball seat and records the weight changes during the process; the heating device 10 provides circulating hot water for the pressure test of the soluble ball seat of the anchoring and pressure bearing device 4 and the dissolution test of the dissolution tank 6; all equipment is installed on the skid 9 at the bottom of the whole. During the anchoring and pressure bearing tests, the operator observes through the observation window 2.

[0031] The working process of the oilfield soluble ball seat device test platform of the present invention is as follows:

[0032] Soluble ball seat setting and anchoring: The casing is lowered into the heated well casing water jacket, ensuring that appropriate clean water is injected into the annulus between the short test casing and the heated well casing water jacket, and into the short test casing. The hydraulic cylinder body is connected to the anchoring and setting sleeve; the cantilever crane is connected into an integrated test tool string, vertically lowered into the middle position of the short test casing, and connected to the quick-connect hydraulic joint on the hydraulic cylinder to begin the setting and anchoring test;

[0033] Anchoring and setting test: After the hydraulic pump in hydraulic system 3 is running normally, control the solenoid valve to introduce a small amount of oil into the upper chamber of the hydraulic cylinder, push the hydraulic cylinder to move upward, and the solenoid valve returns to the neutral position; control the oil supply to the hydraulic cylinder, and the hydraulic cylinder drives the setting sleeve to quickly strike the upper end face of the cone on the receptacle ball seat. The hydraulic cylinder reaches its maximum downward stroke to ensure reliable setting of the receptacle ball seat. The slips are anchored on the inner wall of the short test casing wellbore. Because the piston rod is relatively stationary, the central tie rod (including the cone plug) is disengaged from the setting and anchoring part of the receptacle ball seat, thus completing the setting and anchoring of the receptacle ball seat.

[0034] After the accommodative ball seat is set and anchored, the solenoid valve returns to the neutral position; the solenoid valve controls a small amount of oil to enter the lower chamber of the hydraulic cylinder, and the piston rod pulls out the center pull rod and cone plug of the accommodative ball seat into the setting sleeve to complete the accommodative ball seat setting and anchoring test. Move the heated well casing (containing the short test casing and the anchoring and setting accommodative ball seat) to the pressure test position, and insert the cone plug sealing rod into the short test casing to the center sealing ball seat position of the accommodative ball seat; prepare for the pressure test.

[0035] Confined pressure sealing test: Inject an appropriate amount of clean water into the short test casing wellbore with the soluble ball seat set and anchored. Replace the wellhead pressure plug, connect the hose to the pressure pipeline, and apply an initial pressure of 2 MPa. Start the hot water circulation in the heating device 10 to heat the temperature of the clean water test liquid in the wellbore to 90°C and maintain stability. Start the electric pressure test pump and apply pressures of 10 MPa, 20 MPa, 30 MPa, 40 MPa, 50 MPa, and 60 MPa in sequence. Stabilize the pressure for 1 minute at each stage. After rising to 70 MPa, stabilize the pressure for 15 minutes. If there is no leakage or the leakage pressure drop does not exceed 5 MPa, it can be considered qualified.

[0036] Test preparation for dissolution test: After the confined pressure test is qualified, use the cantilever crane 5 to lift out the short test casing wellbore from the heating wellbore water jacket. Vertically place the short joint of the confined pressure qualified short test casing (with a set and anchored DMS soluble ball seat inside) into the dissolution tank 6, and start the dissolution test until the ball seat is completely dissolved. After the test is completed, weigh the dissolution liquid residues inside the casing short joint and in the dissolution tank 6.

[0037] All tests can be remotely operated and completed on the centralized measurement and control operation console 1, especially the anchoring and setting, and the confined pressure test. A protective baffle is designed in front of the centralized measurement and control operation console, and an observation window is designed on the protective baffle. The observation window glass is made of bulletproof glass for enhanced protection. The measurement and control system is designed with overpressure, overload, and over-temperature interlock protection, and a buzzer alarm is provided to prevent the test pressure, test load, and test temperature from exceeding the test set values. Stop when exceeding the set values. The centralized measurement and control operation console is designed with an emergency stop button. In case of an emergency, all power sources can be immediately cut off and the pressure can be relieved and the load can be unloaded.

[0038] Example 1

[0039] The structure of a test platform for an oilfield soluble ball seat device in this example includes a skid base 9. Above one side of the skid base 9, a measurement and control operation console 1 is installed. An observation window 2 is provided on the measurement and control operation console 1. A heating device 10 is provided on the side of the measurement and control operation console 1 close to the observation window 2. Above the middle of the skid base 9, a hydraulic system 3, an anchoring and setting and confined pressure device 4, and a cantilever crane 5 are provided. A test unit is provided above the side of the skid base 9 far from the side close to the observation window 2. The anchoring and setting and confined pressure device 4 is respectively electrically connected to the heating device 10, the communication test unit, the measurement and control operation console 1, the hydraulic system 3, the anchoring and setting and confined pressure device 4, the cantilever crane 5, and the test unit.

[0040] Example 2

[0041] This embodiment describes the structure of an oilfield soluble ball seat device test platform, including a skid 9; a measurement and control console 1 is installed on one side of the skid 9, with an observation window 2 on the control console 1, and a heating device 10 is installed on the side of the control console 1 near the observation window 2; a hydraulic system 3, an anchoring and pressure-bearing device 4, and a cantilever crane 5 are installed on the upper middle part of the skid 9; and a test unit is installed on the upper side of the skid 9 away from the side near the observation window 2. The anchoring and pressure-bearing device 4 is electrically connected to the heating device 10, the test unit, and the control console 1, respectively.

[0042] The anchoring, setting, and pressure-bearing device 4 includes a casing wellbore and a heated wellbore water jacket, with an annulus between them. A pressure-bearing device is installed on the wellbore, and a setting device is installed on the pressure-bearing device, with a hydraulic cylinder mounted on the setting device. The anchoring, setting, and pressure-bearing device 4 is used for the installation of the soluble ball seat, anchoring and setting tests, and pressure tests. It includes two stations: an anchoring and setting test station and a pressure test station. Anchoring and setting tests are performed at the anchoring and setting test station, and pressure tests are performed at the pressure test station. The maximum anchoring and setting force is 30t, and the anchoring and setting stroke is 40-60mm. The pressure-bearing device is used for pressure tests on the soluble ball seat at the pressure test station, with a maximum ball seat sealing test pressure of 70MPa. The specifications for the ball seat anchoring and setting casing include 5... 1 / 2″( Steel grade P110) and 4 1 / 2″( Steel grade P110), test temperature 90℃.

[0043] Hydraulic system 3 includes an oil tank, hydraulic pump, hydraulic valve block, solenoid valve, and filter, providing power to the hydraulic cylinders on the anchoring and setting device. The rated working pressure of the hydraulic system is 25MPa. Cantilever crane 5 is responsible for lifting all test pieces and test accessories during the test. It is controlled by a wireless remote controller, with a lifting height of 1.9 meters, a service radius of 1.5 meters, and a maximum lifting weight of 125 kg.

[0044] Example 3

[0045] This embodiment describes the structure of an oilfield soluble ball seat device test platform, including a skid 9; a measurement and control console 1 is installed on one side of the skid 9, with an observation window 2 on the control console 1, and a heating device 10 is installed on the side of the control console 1 near the observation window 2; a hydraulic system 3, an anchoring and pressure-bearing device 4, and a cantilever crane 5 are installed on the upper middle part of the skid 9; and a test unit is installed on the upper side of the skid 9 away from the side near the observation window 2. The anchoring and pressure-bearing device 4 is electrically connected to the heating device 10, the test unit, and the control console 1, respectively.

[0046] The anchoring, setting, and pressure-bearing device 4 includes a casing wellbore and a heated wellbore water jacket, with an annulus between them. A pressure-bearing device is installed on the wellbore, and a setting device is installed on the pressure-bearing device, with a hydraulic cylinder mounted on the setting device. The anchoring, setting, and pressure-bearing device 4 is used for the installation of the soluble ball seat, anchoring and setting tests, and pressure tests. It includes two stations: an anchoring and setting test station and a pressure test station. Anchoring and setting tests are performed at the anchoring and setting test station, and pressure tests are performed at the pressure test station. The maximum anchoring and setting force is 30t, and the anchoring and setting stroke is 40-60mm. The pressure-bearing device is used for pressure tests on the soluble ball seat at the pressure test station, with a maximum ball seat sealing test pressure of 70MPa. The specifications for the ball seat anchoring and setting casing include 5... 1 / 2″( Steel grade P110) and 4 1 / 2″( Steel grade P110), test temperature 90℃.

[0047] Hydraulic system 3 includes an oil tank, hydraulic pump, hydraulic valve block, solenoid valve, and filter, providing power to the hydraulic cylinders on the anchoring and setting device. The rated working pressure of the hydraulic system is 25MPa. Cantilever crane 5 is responsible for lifting all test pieces and test accessories during the test. It is controlled by a wireless remote controller, with a lifting height of 1.9 meters, a service radius of 1.5 meters, and a maximum lifting weight of 125 kg.

[0048] The test unit includes a dissolving tank 6, which is connected to a water tank 8. The water tank 8 is connected to a heating device 10. The water tank 8 is mounted on a pressure testing pump system 11. The pressure testing pump system 11 is connected to a pneumatic valve group 7. The anchoring and pressure-bearing device 4 is connected to the pneumatic valve group 7 and the pressure testing pump 11, respectively.

[0049] The dissolving tank 6 is a stainless steel cylindrical vessel with an external heating jacket, which is further protected by an insulation cover. A load cell is installed at the bottom. The dissolving tank 6 is used for dissolving soluble ball seats in tests. Circulating hot water flows within the heating jacket to maintain the test solution at 40°C. The load cell records the weight change of the soluble ball seats in real time during the dissolution process, measuring the dissolution rate. The water tank 8 provides water for the pressure testing pump system 11 during pressure tests and also supplies clean water to the dissolving tank 6. The medium used in the pressure test is stored in the water tank 8, which has a volume of 0.5 M³. 3 The pressure testing pump system 11 provides the liquid test pressure for pressure testing. It is driven by a variable frequency motor and controlled by a frequency converter. The rated working pressure is 125 MPa, and the frequency converter can adjust the output displacement in real time. The motor power is 4 kW; the rated displacement is 64 L / h; and the maximum test pressure is 125 MPa.

[0050] Pneumatic valve assembly 7 is used to control pressure holding and pressure release during pressure testing. The pressure pipeline uses 9 / 16in (20000PSI) imported stainless steel pipe.

[0051] The heating device 10 uses electric heating to heat the circulating water, and includes a hot water circulation pump, an electric heater, and control valves to provide circulating hot water for the soluble ball seat pressure test and dissolution test. The power supply voltage is 380VAC; the maximum heating power is 18kW; the temperature control range is room temperature to 100℃; the hot water circulation pump power is 2.2kW. The liquid test pressure for the pressure test is achieved through the test pump system 11. The pressure holding and depressurization of the anchoring and setting seal and the pressure-bearing device 4 are controlled by a pneumatic valve group 7. The liquid temperature in the anchoring and setting seal and the pressure-bearing device 4 and the dissolution tank 6 is achieved through the heating device 10.

[0052] Example 4

[0053] This embodiment describes the structure of an oilfield soluble ball seat device test platform, including a skid 9; a measurement and control console 1 is installed on one side of the skid 9, with an observation window 2 on the control console 1, and a heating device 10 is installed on the side of the control console 1 near the observation window 2; a hydraulic system 3, an anchoring and pressure-bearing device 4, and a cantilever crane 5 are installed on the upper middle part of the skid 9; and a test unit is installed on the upper side of the skid 9 away from the side near the observation window 2. The anchoring and pressure-bearing device 4 is electrically connected to the heating device 10, the test unit, and the control console 1, respectively.

[0054] The anchoring, setting, and pressure-bearing device 4 includes a casing wellbore and a heated wellbore water jacket, with an annulus between them. A pressure-bearing device is installed on the wellbore, and a setting device is installed on the pressure-bearing device, with a hydraulic cylinder mounted on the setting device. The anchoring, setting, and pressure-bearing device 4 is used for the installation of the soluble ball seat, anchoring and setting tests, and pressure tests. It includes two stations: an anchoring and setting test station and a pressure test station. Anchoring and setting tests are performed at the anchoring and setting test station, and pressure tests are performed at the pressure test station. The maximum anchoring and setting force is 30t, and the anchoring and setting stroke is 40-60mm. The pressure-bearing device is used for pressure tests on the soluble ball seat at the pressure test station, with a maximum ball seat sealing test pressure of 70MPa. The specifications for the ball seat anchoring and setting casing include 5... 1 / 2″( Steel grade P110) and 4 1 / 2″( Steel grade P110), test temperature 90℃.

[0055] Hydraulic system 3 includes an oil tank, hydraulic pump, hydraulic valve block, solenoid valve, and filter, which provides power to the hydraulic cylinders on the anchoring and setting device and the pressure bearing device. The rated working pressure of the hydraulic system is 25MPa.

[0056] Cantilever crane 5 is responsible for the hoisting of all test pieces and test accessories during the test. It is controlled by a wireless remote controller, with a lifting height of 1.9 meters, a service radius of 1.5 meters, and a maximum lifting weight of 125 kg.

[0057] The test unit includes a dissolving tank 6, which is connected to a water tank 8. The water tank 8 is connected to a heating device 10. The water tank 8 is mounted on a pressure testing pump system 11. The pressure testing pump system 11 is connected to a pneumatic valve group 7. The anchoring and pressure-bearing device 4 is connected to the pneumatic valve group 7 and the pressure testing pump 11, respectively.

[0058] The dissolving tank 6 is a stainless steel cylindrical vessel with an external heating jacket, which is further protected by an insulation cover. A load cell is installed at the bottom. The dissolving tank 6 is used for dissolving soluble ball seats in tests. Circulating hot water flows within the heating jacket to maintain the test solution at 40°C. The load cell records the weight change of the soluble ball seats in real time during the dissolution process, measuring the dissolution rate. The water tank 8 provides water for the pressure testing pump system 11 during pressure tests and also supplies clean water to the dissolving tank 6. The medium used in the pressure test is stored in the water tank 8, which has a volume of 0.5 M³. 3 The pressure testing pump system 11 provides the liquid test pressure for pressure testing. It is driven by a variable frequency motor and controlled by a frequency converter. The rated working pressure is 125 MPa, and the frequency converter can adjust the output displacement in real time. The motor power is 4 kW; the rated displacement is 64 L / h; and the maximum test pressure is 125 MPa.

[0059] Pneumatic valve assembly 7 is used to control pressure holding and pressure release during pressure testing. The pressure pipeline uses 9 / 16in (20000PSI) imported stainless steel pipe.

[0060] The heating device 10 uses electric heating to heat the circulating water, and includes a hot water circulation pump, an electric heater, and control valves to provide circulating hot water for the soluble ball seat pressure test and dissolution test. The power supply voltage is 380VAC; the maximum heating power is 18kW; the temperature control range is room temperature to 100℃; the hot water circulation pump power is 2.2kW. The liquid test pressure for the pressure test is achieved through the test pump system 11. The pressure holding and depressurization of the anchoring and setting seal and the pressure-bearing device 4 are controlled by a pneumatic valve group 7. The liquid temperature in the anchoring and setting seal and the pressure-bearing device 4 and the dissolution tank 6 is achieved through the heating device 10.

[0061] The test parameters of the test unit are monitored and controlled by the control system in the measurement and control console 1. The measurement and control console 1 is equipped with a programmable logic controller (PLC) acquisition module, an embedded industrial control all-in-one machine, and online sensors. The online sensors are installed on online equipment and pipelines, including: pressure sensors, temperature sensors, load-bearing sensors, and static pressure test pressure sensors.

[0062] A pressure sensor measures the hydraulic cylinder inlet pressure, thereby controlling the anchoring and setting force. A temperature sensor measures the temperature of the heating circulating water, thereby controlling the test temperature for the pressure test and the test liquid temperature for the dissolution test. A load cell measures the weight change of the dissolution tank 6 over time. A static pressure test pressure sensor is installed on the pressure test pipeline of the pressure-bearing device to measure and control the pressure test pressure. Online sensor measurement signals are acquired by a PLC acquisition module. Programming is used to automatically control the pressure test pressure, test temperature, anchoring and setting force, and weight of the dissolution tank 6, plotting curves over time. The measurement and control software includes lower-level PLC programming software (PTS SETP7) and upper-level industrial control integrated programming software (WINCC or LABWIN). The skid 9 is constructed of steel, and all test equipment is mounted on it, bearing the weight of all test equipment.

[0063] This invention discloses a skid-mounted integrated test platform for oilfield soluble ball seat devices. It provides a reliable test platform for the design improvement, field testing, and construction application of soluble ball seat products. It enables rapid and convenient switching between software and hardware simulations, simplifies the testing process, and provides scientifically accurate process parameters for oilfield construction. It meets the requirements for type testing of DMS soluble ball seat products of different specifications, dissolution testing of soluble materials, and anchoring and sealing tests of soluble ball seats. The platform has a reasonable structure, occupies little space, is easy to hoist and transport, and is highly flexible. It allows for the safe and rapid application of test loads to the hydraulic cylinders of the casing auxiliary tension system within a confined operating space, improving the operability and safety of load testing, saving testing costs, facilitating the verification of test control effects, and making test values ​​more accurate and reliable. It is not limited by other factors, and the operation is simple. It provides support for theoretical methods and technical research on oilfield soluble ball seat device testing operations, ensuring safe and efficient operation.

Claims

1. A test platform for an oilfield soluble ball seat device, characterized in that, Includes a skid (9), a control console (1) installed on one side of the skid (9), an observation window (2) set on the control console (1), a heating device (10) set on the side of the control console (1) near the observation window (2), a hydraulic system (3), an anchoring and pressure bearing device (4), and a cantilever crane (5) set on the upper part of the middle of the skid (9), and a test unit set on the side of the skid (9) away from the side near the observation window (2). The anchoring and pressure bearing device (4) is connected to the heating device (10), the test unit, and the control console (1), which are electrically connected to the hydraulic system (3), the anchoring and pressure bearing device (4), the cantilever crane (5), and the test unit, respectively. The anchoring and setting device (4) includes a casing wellbore and a heated wellbore water jacket. There is an annulus between the casing wellbore and the heated wellbore water jacket. A pressure-bearing device is installed on the wellbore. A setting device is installed on the pressure-bearing device. A hydraulic cylinder is installed on the setting device. The anchoring and setting device (4) is used for soluble ball seat test installation, anchoring and setting test, and pressure test. The anchoring and setting device (4) includes two stations: an anchoring and setting test station and a pressure test station. The test unit includes a dissolving tank (6), which is connected to a water tank (8). The water tank (8) is connected to a heating device (10). The water tank (8) is mounted on a pressure testing pump system (11). The pressure testing pump system (11) is connected to a pneumatic valve group (7). The anchoring and pressure bearing device (4) is connected to the pneumatic valve group (7) and the pressure testing pump system (11) respectively. The measurement and control console (1) is equipped with a programmable logic controller (PLC) acquisition module, an embedded industrial control all-in-one machine and online sensors. The online sensors are installed on online equipment and pipelines. The online sensors include: pressure sensors, temperature sensors, load sensors and static pressure test pressure sensors. The melting tank (6) is a stainless steel cylindrical tube with an external heating jacket, an external heat insulation cover, and a load-bearing sensor installed at the bottom. The heating device (10) uses electric heating to heat the circulating water, and includes a hot water circulation pump, an electric heater, and a control valve.

2. The oilfield soluble ball seat device test platform according to claim 1, characterized in that, The hydraulic system (3) includes an oil tank, a hydraulic pump, a hydraulic valve block, a solenoid valve, and a filter.

3. The oilfield soluble ball seat device test platform according to claim 1, characterized in that, The cantilever crane (5) is controlled by a wireless remote controller.

4. The oilfield soluble ball seat device test platform according to claim 1, characterized in that, The test pressure pump system (11) is driven by a variable frequency motor.

5. The oilfield soluble ball seat device test platform according to claim 1, characterized in that, The pressure sensor measures the hydraulic cylinder inlet pressure and thus measures and controls the anchoring and sealing force; the temperature sensor measures the temperature of the heating circulating water and thus measures and controls the test temperature of the pressure test and the test liquid temperature of the dissolution test; the load sensor is used to measure the weight change of the dissolution tank (6) over time; and the static pressure test pressure sensor is installed on the pressure test pipeline of the pressure device.

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