Ground prefabricated tubing inner plug tool high temperature and high pressure experimental evaluation device

Abstract

The application provides a high-temperature and high-pressure experimental evaluation device for a ground prefabricated tubing inner plug tool, which comprises a rupture disc test unit, an output input unit and a heating control unit; wherein the rupture disc test unit comprises flange lugs, stud assemblies, flanges, rupture disc connectors, heater first insulation layers, electromagnetic signal shielding layers, heat insulation layers, boxes, working chambers, panels, oil collecting grooves and lugs; the output input unit comprises a high-pressure valve assembly; and the heating control unit comprises a heating controller cable connection port, a temperature sensor connection port and a temperature controller. The experimental evaluation device provided by the application can quickly verify the sealing property and stability of the rupture disc, the temperature control is more accurate by using electromagnetic heating, the pressure fluctuation is smaller, the accuracy of the experimental results can be more truly reflected, and digital real-time temperature precise control test temperature is realized.

Description

Technical Field

[0001] This invention relates to the technical field of pressurized well completion equipment for oil and gas, and particularly to the technical field of design and manufacturing of fracturing disk devices for pressurized well completion processes. Specifically, it relates to a high-temperature and high-pressure experimental evaluation device for prefabricated tubing plugging tools on the surface. Background Technology

[0002] In all high-pressure live well completion operations in the oil and gas industry, ceramic plugs and soluble blind plugs are essential well control tools. Because ceramic plugs and soluble blind plugs operate under high temperature and pressure conditions in the well for extended periods, any problems can lead to blowouts, causing casualties and equipment damage. Therefore, in high-pressure live well completion projects, it is necessary to use experimental equipment to conduct long-term simulation experiments to verify their sealing performance and stability, and to confirm whether they meet the qualification standards.

[0003] A utility model patent with patent number CN201720165533.4 discloses a retrievable fracture disc for live well completion operations. This utility model includes an upper sealing joint and a lower sealing joint. The valve core of the upper sealing joint is smaller than that of the lower sealing joint. The upper and lower sealing joints are connected. Below the lower sealing joint, it is connected to a screen pipe via a connecting short section. The screen pipe has fluid flow holes on its wall and a check valve plate welded to its inner wall. This tool, used during live well completion operations, ensures the safety and reliability of the live operation process. After the valve cores in the upper and lower sealing joints are knocked off during completion, the check valve plate inside the screen pipe effectively prevents the valve cores that have fallen into the lower joint and guide head from moving back, effectively preventing blockage of the production tubing and avoiding accidents caused by blockage. It has good performance in use.

[0004] It is not difficult to see from the abstract of the specification that the above-mentioned patented design of the rupture disc is a short connector installed on the pipe string, including an upper sealing joint and a lower sealing joint, which is a tool used directly to seal the high-pressure oil and gas flow that may occur downhole during the construction process;

[0005] In existing technologies, all high-pressure live well completion processes, for safety reasons, generally use a fracture disc with a ceramic plug valve core or soluble blind plug at the end of the completion and production string. Some also use two imported fracture discs. To reduce production costs, some use imported fracture discs and add a pressure regulating valve to seal the tubing, ensuring safety when the completion string is run into the well. However, because the valve core of the fracture disc is made of ceramic material, it needs to be tested before manufacturing and use to ensure the reliability of these products. Using existing testing processes and equipment for high-temperature and high-pressure experimental evaluation requires long-term simulation experiments to verify its sealing performance and stability, and to confirm whether it meets the qualification standards.

[0006] Therefore, there is an urgent need for a device that can quickly and accurately perform high-temperature and high-pressure experimental evaluation of the fracture plate of well control tools. Summary of the Invention

[0007] The purpose of this invention is to address at least one of the aforementioned deficiencies in the prior art.

[0008] To achieve the above objectives, the present invention provides a high-temperature and high-pressure experimental evaluation device for a prefabricated ground-based oil pipe plugging tool, the evaluation device comprising a rupture disc test unit, an output and input unit, and a heating control unit.

[0009] Optionally, the rupture disc test unit includes a flange lifting lug, a stud assembly, a flange, a rupture disc connector, a heater first insulation layer, an electromagnetic signal shielding layer, a heat insulation layer, a housing, a working chamber, a panel, an oil collection tank, and lifting lugs.

[0010] Alternatively, the working chamber includes a rupture disc, the upper end of which is connected to a rupture disc connector, the upper end of which has a channel for connecting to a high-pressure three-way valve, and a pressure transmitter interface is provided at the upper end of the high-pressure three-way valve.

[0011] Alternatively, the high-pressure three-way valve may have a one-inlet and two-outlet structure.

[0012] Alternatively, the flange lifting lug spans the high-pressure three-way valve as described in claim 3, a lifting lug is provided on the upper end face of the rupture disc test unit, and an oil collection disc is provided at the upper end of the rupture disc test unit.

[0013] Optionally, the upper end of the rupture disc test unit is provided with a flange, which is fixed to the upper end of the rupture disc test unit by a stud assembly; an "O" ring is provided at the connection surface between the flange and the disc structure.

[0014] Optionally, the outer edge of the rupture disc test unit is arranged in layers, including a heater first insulation layer, an electromagnetic signal shielding layer, and a heat insulation layer, with a panel on the outermost edge; the housing of the rupture disc test unit is set on the ground.

[0015] Optionally, the output / input unit includes a high-pressure valve assembly, which includes a high-temperature pressure gauge, a pressure transmitter interface, a high-pressure valve handle, a high-pressure valve body, a waste oil recovery ball valve, and a high-pressure three-way valve.

[0016] Alternatively, the high-temperature pressure gauge is located at the upper end of the pressure transmitter interface, and the high-pressure valve body and high-pressure valve handle are located at the lower end of the disc structure.

[0017] Alternatively, the pressure transmitter interface is a rigid tube structure, and the connection end of the pressure transmitter interface adopts a 60-degree conical sealing structure.

[0018] Alternatively, the high-pressure valve body adopts a rigid pipe structure, and the connection with the connecting pipe adopts a 60-degree conical sealing structure.

[0019] Optionally, the heating control unit includes a heating controller cable connector, a temperature sensor connector, and a temperature controller; the temperature controller includes a temperature controller and a heater; the temperature controller is connected to the temperature sensor connector via a cable, and the heater is connected to the heating controller cable connector via a cable.

[0020] Alternatively, the heater in the temperature controller may be an electromagnetic wave heater, which is connected to the temperature sensor via a temperature sensor connection port.

[0021] Compared with the prior art, the beneficial effects of the present invention include at least one of the following:

[0022] 1) The experimental evaluation device provided by the present invention can quickly verify the sealing and stability of the crushing disc and confirm that it meets the standard requirements.

[0023] 2) Compared with traditional testing methods, the evaluation device of the present invention uses electromagnetic heating, which makes temperature control more precise, pressure fluctuations smaller, and more accurately reflects the experimental results.

[0024] 3) The evaluation device of the present invention has the advantages of electromagnetic heating and connection with a temperature sensor, which enables precise digital real-time temperature control of the test temperature. Attached Figure Description

[0025] The above and other objects and / or features of the present invention will become clearer from the following description taken in conjunction with the accompanying drawings, in which:

[0026] Figure 1 The diagram shows a front cross-sectional view of the high-temperature and high-pressure experimental evaluation device for the ground-based prefabricated oil pipe plugging tool in Embodiment 1 of the present invention.

[0027] Figure 2 The diagram shows a top view of the high-temperature and high-pressure experimental evaluation device for the ground-based prefabricated oil pipe plugging tool in Embodiment 1 of the present invention.

[0028] Figure 3 A three-dimensional structural diagram of the connection between the ground-based prefabricated oil pipe plugging tool high-temperature and high-pressure experimental evaluation device and the heater in Embodiment 1 of the present invention is shown.

[0029] Explanation of key figure labels:

[0030] 1-High temperature pressure gauge, 2-Flange lifting lug, 3-Pressure transmitter interface, 4-Stud assembly, 5-Flange, 6-Rupture disc connector, 7-Rupture disc, 8-Heater first insulation layer, 9-Electromagnetic signal shielding layer, 10-Insulation layer, 11-High pressure valve handle, 12-High pressure valve body, 13-Ground, 14-Box, 15-Working chamber, 16-High pressure three-way valve, 17-Panel, 18-Heating controller cable connector, 19-Temperature sensor connector, 20-Temperature controller, 21-Oil collection tank, 22-Lifting lug, 23-Waste oil recovery ball valve. Detailed Implementation

[0031] The following will describe in detail the high-temperature and high-pressure experimental evaluation device for the ground-based prefabricated oil pipe plugging tool of the present invention with reference to embodiments.

[0032] Example 1

[0033] In this embodiment, a high-temperature and high-pressure experimental evaluation device for a prefabricated oil pipe plugging tool for live-line operations is provided, comprising a rupture disc test unit, an output and input unit, and a heating control unit. The rupture disc test unit includes a flange lifting lug, a stud assembly, a flange, a rupture disc connector, a heater first insulation layer, an electromagnetic signal shielding layer, a heat insulation layer, a housing, a working chamber, a panel, an oil collection tank, and lifting lugs. A rupture disc is disposed within the working chamber, and the upper end of the rupture disc is connected to the rupture disc connector. The upper end of the rupture disc connector has a channel connecting to a high-pressure three-way valve, and a pressure transmitter interface is provided at the upper end of the high-pressure three-way valve; the high-pressure three-way valve has a one-inlet and two-outlet structure.

[0034] In this embodiment, a flange is provided at the upper end of the rupture disc test unit, and the flange is fixed to the upper end of the rupture disc test device by a stud assembly; an O-ring is provided at the connection surface between the flange and the disc structure; the flange lifting lug spans the high-pressure three-way valve; a lifting lug is provided on the upper end face of the rupture disc test unit, and an oil collection plate is provided at the upper end of the rupture disc test unit; a heater first insulation layer, an electromagnetic signal shielding layer, and a heat insulation layer are arranged in layers on the outer side of the rupture disc test unit, with a panel on the outermost side; the box of the rupture disc test unit is set on the ground.

[0035] In this embodiment, the output / input unit includes a high-pressure valve assembly, which includes a high-temperature pressure gauge, a pressure transmitter interface, a high-pressure valve handle, a high-pressure valve body, a waste oil recovery ball valve, and a high-pressure three-way valve. The high-temperature pressure gauge is located at the upper end of the pressure transmitter interface, and the high-pressure valve body and high-pressure valve handle are located at the lower end of the disc structure. The high-pressure three-way valve is located at the upper end of the flange. The pressure transmitter interface has a rigid pipe structure, and the connection end of the pressure transmitter interface adopts a tapered sealing structure. The high-pressure valve body has a rigid pipe structure, and the connection with the connecting pipe adopts a tapered sealing structure.

[0036] In this embodiment, the heating control unit includes a heating controller cable connector, a temperature sensor connector, and a temperature controller. The temperature controller includes a temperature controller and a heater. The temperature controller is connected to the temperature sensor connector located at the lower end of the disk structure via a cable, and the heater is connected to the heating controller cable connector located at the lower end of the disk structure via a cable. The heater within the temperature controller is an electromagnetic wave heater, which is connected to the temperature sensor via the temperature sensor connector. This invention enables digital real-time temperature control.

[0037] Example 2

[0038] This embodiment provides a high-temperature and high-pressure experimental evaluation device for a prefabricated oil pipe plugging tool used in pressurized operations. The following is in conjunction with... Figures 1 to 3 This embodiment will be described below.

[0039] This device includes a rupture disc testing unit, an output / input unit, and a heating control unit:

[0040] The rupture disc test unit comprises a flange lifting lug 2, a stud assembly 4, a flange 5, a rupture disc connector 6, a rupture disc 7, a heater first insulation layer 8, an electromagnetic signal shielding layer 9, a heat insulation layer 10, a housing 14, a working chamber 15, a panel 17, an oil collection tank 21, and lifting lugs 22. The rupture disc 7 is located inside the working chamber 15 of the rupture disc test device. The upper end of the rupture disc 7 is connected to the rupture disc connector 6. The upper end of the rupture disc connector 6 has a channel connecting to a high-pressure three-way valve 16. A pressure transmitter interface 3 is provided at the upper end of the high-pressure three-way valve 16. The high-pressure three-way valve 16 has a one-inlet and two-outlet structure. A flange 5 is provided at the upper end of the rupture disc test device. The flange 5 is fixed to the upper end of the rupture disc test device by the stud assembly 4. An O-ring is provided at the connection surface between the flange 5 and the rupture disc test device. This O-ring seal serves to seal the connection surface between the flange 5 and the rupture disc test device.

[0041] The flange lifting lug 2 spans across the high-pressure three-way valve 16 and is used to attach cables when lifting the flange 5; a lifting lug 22 is provided on the upper end face of the rupture disc test device, which is used to lift the test device; during the installation and disassembly of the equipment, since the oil in the oil pipe may flow to the outside, in order to prevent the test oil from leaking and polluting the environment, an oil collection plate 21 is provided at the upper end of the rupture disc test device;

[0042] The outer side of the rupture disc test unit is arranged in layers: a heater first insulation layer 8, an electromagnetic signal shielding layer 9, and a heat insulation layer 10, with a panel 17 on the outermost side. The housing 14 of the rupture disc test device is set on the ground 13. The heater first insulation layer 8 can keep the heat in place. Since the heating of this device is electromagnetic heating, the electromagnetic signal shielding layer 9 can prevent electromagnetic waves from leaking out. The heat insulation layer 10 can prevent personnel from being burned by accidental contact when the heated outer shell of the rupture disc test device heats up. The panel 17 can further isolate the leakage of internal heat, and has the effects of easy cleaning and energy saving.

[0043] The input / output unit includes a high-pressure valve assembly, which includes a high-temperature pressure gauge 1, a pressure transmitter interface 3, a high-pressure valve handle 11, a high-pressure valve body 12, a waste oil recovery ball valve 23, and a high-pressure three-way valve 16. The high-temperature pressure gauge 1 is located at the upper end of the pressure transmitter interface 3, and the high-pressure valve body 12 and the high-pressure valve handle 11 are located at the lower end of the rupture disc test device. The high-pressure three-way valve 16 is located at the upper end of the flange 5. The pressure transmitter interface 3 is a rigid pipe structure, and the connection end of the pressure transmitter interface 3 adopts a 60-degree conical sealing structure. The high-pressure valve body 12 is a rigid pipe structure, and the connection with the connecting pipe adopts a 60-degree conical sealing structure.

[0044] The heating control unit includes a heating controller cable connector 18, a temperature sensor connector 19, and a temperature controller 20; the temperature controller 20 includes a temperature controller and a heater; the heating of this device is electromagnetic heating, the electromagnetic signal shielding layer can prevent electromagnetic wave leakage, the heat insulation layer can prevent personnel from being burned by accidental contact when the heated plate structure shell heats up, and the panel can further isolate the leakage of internal heat, which has the effects of easy cleaning and energy saving;

[0045] The temperature controller is connected to the temperature sensor connection port 19 located at the lower end of the rupture disc test device via a cable, and the heater is connected to the heating controller cable connection port 18 located at the lower end of the rupture disc test device via a cable. The heater inside the temperature controller 20 is an electromagnetic wave heater, which is connected to the temperature sensor via the temperature sensor connection port 1 to achieve digital real-time temperature control.

[0046] The heater is an electromagnetic wave heater, which is connected to a temperature sensor via a temperature sensor connection port. This enables precise digital real-time temperature control, allowing for accurate testing of downhole well control equipment under the same conditions, ensuring accuracy.

[0047] Example 3 (Test Procedure)

[0048] To better understand the above embodiments, the testing process is further explained below:

[0049] Step 1: Inject test pressure oil into the working chamber through the set high-pressure valve. The working chamber should be filled with test pressure fluid, or hydraulic oil. Then close the high-pressure valve.

[0050] Step 2: Start the heater to heat the test fluid or hydraulic oil inside the working chamber until the set temperature is reached, and maintain it at that temperature. The temperature difference between the heated temperature and the set temperature shall not exceed ±5℃.

[0051] Step 3: Connect the rupture disc to be tested, or other workpieces to be tested, to the lower end of the flange through the rupture disc connector. Then, hoist the flange with the test piece connected to it onto the test device. After hoisting it, attach the bolt set, but do not tighten the bolt set yet.

[0052] Step 4: After the temperature stops changing, tighten the bolt group to the required torque and check to ensure that the external pressure test line is connected correctly.

[0053] Step 5: Open the high-pressure valve and pressurize to the test set pressure;

[0054] Step 6: Detect the internal pressure and working chamber pressure of the ruptured disc or other test workpiece;

[0055] Repeat the above process until the test is passed.

[0056] Compared with existing technologies, the advantages and innovations of the prefabricated ground-based oil pipe plugging tool high-temperature and high-pressure experimental evaluation device of the present invention include:

[0057] 1. The heating of this device is electromagnetic heating. The electromagnetic signal shielding layer can prevent electromagnetic waves from leaking out. The heat insulation layer can prevent personnel from being burned by accidental contact when the heated plate structure shell heats up. The panel can further isolate the internal heat from leakage, and has the effects of easy cleaning and energy saving.

[0058] 2. The heater is an electromagnetic wave heater. The electromagnetic wave heater is connected to the temperature sensor through the temperature sensor connection port, which can realize digital real-time precise temperature control. Therefore, it can accurately test the well control equipment downhole under the same conditions, so as to achieve accuracy.

[0059] 3. Compared with traditional testing methods, electromagnetic heating provides more precise temperature control, smaller pressure fluctuations, and a more accurate reflection of experimental results.

[0060] Although the present invention has been described above in conjunction with embodiments and accompanying drawings, those skilled in the art should understand that various modifications can be made to the above embodiments without departing from the spirit and scope of the claims.

Claims

1. A high-temperature and high-pressure experimental evaluation device for a prefabricated oil pipe plugging tool for pressurized operations on the ground, characterized in that, The evaluation device includes a ruptured disc test unit, an output / input unit, and a heating control unit.

2. The evaluation device according to claim 1, characterized in that, The rupture disc test unit includes a flange lifting lug, stud assembly, flange, rupture disc connector, heater first insulation layer, electromagnetic signal shielding layer, heat insulation layer, housing, working chamber, panel, oil collection tank, and lifting lug.

3. The evaluation device according to claim 2, characterized in that, The working chamber includes a rupture disc, the upper end of which is connected to a rupture disc connector. The upper end of the rupture disc connector has a channel for connecting to a high-pressure three-way valve, and a pressure transmitter interface is provided at the upper end of the high-pressure three-way valve.

4. The evaluation device according to claim 3, characterized in that, The high-pressure three-way valve has a structure with one inlet and two outlets.

5. The evaluation device according to claim 3, characterized in that, The flange lifting lug spans the high-pressure three-way valve, and a lifting lug is provided on the upper end face of the rupture disc test unit. An oil collection plate is provided at the upper end of the rupture disc test unit.

6. The evaluation device according to claim 1, characterized in that, The upper end of the rupture disc test unit is provided with a flange, which is fixed to the upper end of the rupture disc test unit by a stud assembly; an O-ring is provided at the connection surface between the flange and the disc structure.

7. The evaluation device according to claim 1, characterized in that, The outer layer of the rupture disc test unit consists of a heater first insulation layer, an electromagnetic signal shielding layer, and a heat insulation layer, with a panel on the outermost side; the housing of the rupture disc test unit is located on the ground.

8. The evaluation device according to claim 1, characterized in that, The output / input unit includes a high-pressure valve assembly, which includes a high-temperature pressure gauge, a pressure transmitter interface, a high-pressure valve handle, a high-pressure valve body, a waste oil recovery ball valve, and a high-pressure three-way valve.

9. The evaluation device according to claim 8, characterized in that, The high-temperature pressure gauge is located at the upper end of the pressure transmitter interface, and the high-pressure valve body and high-pressure valve handle are located at the lower end of the disc structure.

10. The evaluation device according to claim 8, characterized in that, The pressure transmitter interface has a rigid tube structure, and the connection end of the pressure transmitter interface adopts a 60-degree conical sealing structure.

11. The evaluation device according to claim 8, characterized in that, The high-pressure valve body adopts a rigid pipe structure, and the connection with the connecting pipe adopts a 60-degree conical sealing structure.

12. The evaluation device according to claim 1, characterized in that, The heating control unit includes a heating controller cable connector, a temperature sensor connector, and a temperature controller; the temperature controller includes a temperature controller and a heater; the temperature controller is connected to the temperature sensor connector via a cable, and the heater is connected to the heating controller cable connector via a cable.

13. The evaluation device according to claim 12, characterized in that, The heater inside the temperature controller is an electromagnetic wave heater, which is connected to the temperature sensor through a temperature sensor connection port.

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