A simulated underground ignition experimental device and a method for simulating the collection of ignition data

Abstract

The present invention relates to a simulated underground ignition experiment device and a method for simulating the collection of ignition data in the field of underground oil production technology. The simulated underground ignition experiment device of the present invention comprises a pressure kettle body, the inner peripheral wall of the pressure kettle body is provided with a heat insulation layer, the pressure kettle body is used to fill the combustion material simulating the underground oil reservoir, one end of the pressure kettle body is provided with an open end, and is sealed with a cover body, the inner peripheral of the corresponding open end of the inner side of the cover body is sealed with an ignition seat, the ignition seat is provided with an ignition coil for indirectly heating the inner cavity of the kettle body near the open end, and the center of the ignition seat is penetrated by a pipeline assembly connecting the inside and outside of the kettle body. The ignition experiment device of the present invention can simulate the ignition experiment under the conditions of high-pressure and high-temperature underground oil reservoirs, so as to obtain and collect the simulation data of the underground ignition experiment for guiding underground operations.

Description

Technical Field

[0001] The invention relates to the technical field of underground oil production, and in particular to an ignition experimental device simulating an underground well and a method for simulating and collecting ignition data, which are applicable to experimental fields such as petroleum engineering and petrochemical industry. Background Art

[0002] The production process of oil varies with the characteristics of the reservoir. In the early stage of oil production, due to the high pressure of the reservoir, as long as the gate of the Christmas tree is opened, the underground oil and natural gas will keep gushing out. This is a "flowing well". After a period of self-flowing, due to the decrease in formation pressure, the spraying force of the oil well will slowly decrease, and the well will stop spraying and finally stop spraying.

[0003] In the existing technology, to maintain the reservoir pressure, the following methods are mainly used: 1. By pressing in boiling water or high-temperature steam; 2. Pressing in nitrogen; 3. Pressing in carbon dioxide to reduce the viscosity of oil; 4. Pressing in light gasoline to reduce the viscosity of oil; 5. Pressing in an aqueous solution of organic matter that can decompose the oil from the rock; 6. Pressing in an aqueous solution of a substance (cleaner) that improves the surface tension between oil and water (interfacial tension meter) to decompose the oil from the rock; 7. Combining the above methods.

[0004] In actual applications, since the above methods still cannot produce crude oil for heavy oil, extra-heavy oil and some dead wells, another oil production process is adopted, which is to burn part of the underground oil to increase the temperature of the underground oil reservoir and reduce its viscosity, so as to produce the underground crude oil. In order to achieve safe and continuous combustion of underground oil reservoirs, the ignition and combustion parameters must be controlled, otherwise the following problems may occur:

[0005] (1) The oil well cannot be ignited;

[0006] (2) Overburning, resulting in no oil output;

[0007] (3) Blast a well.

[0008] Through the indoor fire simulation experimental device, the ignition and combustion parameters under underground reservoir conditions can be studied to achieve safe and effective combustion in the reservoir and achieve the goal of economical oil recovery.

[0009] The indoor fire simulation experimental device is mainly composed of a pressure chamber and an ignition device. The pressure chamber is used to hold the combustion medium simulating the downhole oil reservoir. The ignition device is used to ignite the combustion medium and burn it continuously. After the combustion medium burns continuously, it releases heat, further heating the combustion medium in the simulated oil reservoir to reduce the viscosity. Under the action of internal pressure, the unburned crude oil with reduced viscosity is produced.

[0010] To achieve fire chamber simulation, the medium in the pressure chamber must be able to burn continuously and effectively. Therefore, to achieve continuous combustion under high pressure, the ignition device is very important.

[0011] Although the current ignition device of the indoor fire simulation experiment device can realize the ignition function, it has two major disadvantages: 1. The ignition time is too long. It takes a long time from the beginning of ignition to the realization of continuous combustion of the oil reservoir, which has low experimental efficiency and high labor intensity; 2. Low working pressure. The working pressure of the current igniter is basically less than 6MPa, which is far from meeting the conditions of my country's oil reservoirs. Summary of the invention

[0012] In view of the above-mentioned problems existing in the ignition device of the indoor fire simulation experiment device in the prior art, the present invention provides a simulated downhole ignition experiment device for simulating ignition experiments under high-pressure and high-temperature downhole oil reservoir conditions, so as to simulate downhole ignition experiments and collect downhole ignition data.

[0013] The objective of the present invention is achieved in this way. A simulated underground ignition experimental device comprises a pressure kettle body, the inner peripheral wall of the pressure kettle body is provided with a heat insulation layer, the pressure kettle body is used to fill the combustion material simulating the underground oil reservoir, one end of the pressure kettle body is provided with an open end, and is sealed with a cover body, an ignition seat is sealedly installed on the inner periphery of the open end corresponding to the inner side of the cover body, an ignition coil is provided in the ignition seat, which is used for indirectly heating the inner cavity of the kettle body near the open end, and a pipeline assembly connecting the inside and the outside of the kettle body is provided through the center of the ignition seat.

[0014] The simulated downhole ignition experimental device of the present invention is used to fill the combustible material simulating the downhole oil reservoir in the pressure kettle body, and the pressure condition of the downhole can be simulated by pressurizing the kettle body. The surrounding materials in the kettle body are indirectly heated by the ignition coil to heat the materials near the ignition seat. When the materials are heated to the combustible temperature of the materials, the materials in the kettle are ignited. During this period, the degree of combustion in the kettle can be controlled by controlling the continuous oxygen supply of the pipe assembly, so that the downhole ignition and combustion can be truly simulated. In addition, the indirect heating ignition is convenient for realizing smooth ignition under high pressure conditions, and rapid ignition can be realized by power control of the coil, and the burning after ignition can be controlled by controlling the gas supply of the pipeline assembly. burn Time and combustion volume, through repeated ignition simulation experiments, the optimal ignition process parameters can be determined to guide downhole operations.

[0015] To facilitate the sealed assembly of the ignition seat and the kettle body, the end face of the open end of the kettle body is fitted against the cover body and connected by a number of bolts; the inner periphery of the open end is fitted with the ignition seat, and a seal is provided at the fitting position between the outer periphery of the ignition seat and the inner periphery of the open end.

[0016] In order to ensure the ignition seat's high temperature and high pressure resistance, the ignition seat is made of monel alloy.

[0017] In order to ensure that the ignition seat is in full contact with the surrounding materials in the kettle for heating, the ignition seat is provided with a seat sleeve extending into the inside of the pressure kettle body near the opening end, and the seat sleeve is circumferentially provided with an annular groove for installing the ignition coil. After the ignition coil is installed in the annular groove, it is filled with thermal insulation material, and the cover body portion corresponding to the annular groove is provided with a guide hole for wire connection; the thermal insulation layer is arranged in sections, including thermal insulation layer 1 and thermal insulation layer 2, the thermal insulation layer 1 is arranged between the outer periphery of the seat sleeve and the inner periphery of the pressure kettle body, the thermal insulation layer 2 is connected to the thermal insulation layer 1, and the end surface of the thermal insulation layer 2 corresponding to the thermal insulation layer 1 is used for limiting the position against the end surface of the seat sleeve.

[0018] In order to ensure the pressure-bearing performance of the sealed connection between the ignition seat and the pressure kettle body, the open end of the pressure kettle body is provided with a radially inwardly convex step-shaped sealing groove, and the sealing member is arranged in the sealing groove. The sealing member includes a gasket, a sealing ring, a gasket and a pressure cap which are sequentially assembled on the step position. The cover body is provided with a plurality of screw holes in the circumference corresponding to the pressure cap, and bolts for pressing the pressure cap are screwed into the screw holes.

[0019] Furthermore, the pipeline assembly includes an air supply pipeline assembly and a detection pipeline assembly, wherein the air supply pipeline assembly is used to deliver combustion-supporting gas to the pressure vessel, and the detection pipeline assembly is used to transmit and connect the pressure and temperature detection elements in the pressure vessel. The combustion-supporting gas is delivered to the vessel through the air supply pipeline to ensure the combustion conditions in the vessel, and the temperature, pressure and other detection elements are set in the vessel through the detection pipeline to monitor the temperature and pressure parameters in the vessel to ensure the integrity of the simulation experiment data.

[0020] To facilitate the installation and connection of the pipeline assembly, the pipeline assembly includes a conveying conduit connecting the inside and outside of the kettle body and a guide sleeve arranged on the outer periphery of the conveying conduit, an outer guide hole is arranged on the cover body, and an inner guide hole coaxial with the outer guide hole is arranged on the ignition seat, and the conveying conduit and the guide sleeve are penetrated by the outer guide hole and the inner guide hole; the outer section of the outer guide hole is fitted with the pressing sleeve, the inner guide hole is provided with an internal threaded hole on the side close to the outer guide hole, the guide sleeve is provided with an external thread corresponding to the inner section, and a stage for placing a sealing ring is provided at the end of the internal threaded hole, and a gasket, a sealing ring, a gasket and a pressure pad are sequentially installed in the stage, and the end of the guide sleeve is pressed against the pressure pad, the gasket, the sealing ring and the gasket in turn.

[0021] Furthermore, one end of the pressure pad extends into the step hole, and the other end extends out of the step hole, and the end of the pressure pad extending out of the step hole is a tapered guide end, the end shape of the guide sleeve is matched with the shape of the tapered guide end, and the outer end of the guide sleeve extends out of the outer guide hole and is provided with an outwardly protruding step cap.

[0022] In order to facilitate the use of the above-mentioned ignition test device to simulate the downhole ignition process, the present invention also provides a method for simulating the collection of downhole ignition test data using the above-mentioned simulated downhole ignition test device, which is characterized by comprising the following process:

[0023] The first step is to fill the pressure kettle with a combustible filler simulating the composition of the downhole reservoir, seal and install the ignition seat and the cover, electrically connect the ignition coil and the detection element, and connect the detection element to the data acquisition system, and pressurize the pressure kettle to a predetermined value and maintain the pressure for a certain period of time to detect the sealing performance of the pressure kettle until the pressure value set in the experiment is reached;

[0024] The second step is to connect the air supply pipeline assembly to the pressure air source, supply combustion-supporting air to the kettle at a predetermined flow rate, and then energize the ignition coil to heat up the ignition seat and the combustible filler around the ignition seat. The detection element detects and records the temperature and pressure in the kettle until the temperature in the kettle suddenly rises rapidly to confirm that the ignition is successful. At the same time, the data acquisition system collects and records the pressure and temperature data in the kettle online after the coil is energized.

[0025] The third step is to replace the combustible filler in the pressure kettle, change the flow rate of the supporting gas and the pressure in the kettle, repeat the first and second steps, and obtain the experimental data of the ignition temperature and ignition coil parameters under different simulated conditions in the kettle, which will be used to analyze and guide the exploitation of heavy oil, extra heavy oil or some dead well oil layers in the well.

[0026] Furthermore, in the first step, the pressure value set in the pressure vessel body experiment is 6 to 20 MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the simulated underground ignition experiment device of the present invention.

[0028] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0029] Among them, 1 is a cover body; 2 is an ignition seat; 201 is a seat sleeve; 3 is a pressure kettle body; 4 is a heat insulation layer 1; 5 is a heat insulation layer 2; 6 is a combustion material; 7 is a convex-concave matching structure; 8 is an air supply pipeline assembly; 801 is a delivery duct; 802 is a guide sleeve; 803 is a pressure pad; 804 is a gasket; 805 is a sealing ring; 806 is a gasket; 807 is a step cap; 9 is a detection pipeline assembly; 10 is a guide hole; 11 is a bolt; 12 is a nut; 13 is a gasket; 14 is a bolt; 15 is a pressure cap; 16 is a gasket; 17 is a sealing ring; 18 is a gasket; 19 is a ring groove; 20 is an ignition coil. DETAILED DESCRIPTION

[0030] Example 1

[0031] like Figure 1 and Figure 2The figure shows the simulated downhole ignition experiment device of the present embodiment, including a pressure kettle body 3, the inner peripheral wall of the pressure kettle body 2 is provided with a heat insulation layer, and the inner peripheral wall of the kettle body is completely insulated; the pressure kettle body 3 is used to fill the combustible material 6 simulating the downhole oil reservoir, one end of the pressure kettle body 3 is provided with an open end, and is sealed with a cover body 1, and an ignition seat 2 is sealedly installed on the inner periphery of the corresponding open end on the inner side of the cover body 2, and an ignition coil 20 is provided in the ignition seat 2 for indirectly heating the combustible material 6 in the kettle body near the open end, and a pipeline assembly connecting the inside and outside of the kettle body is provided through the center of the ignition seat 2.

[0032] To ensure a high-pressure environment after the kettle is filled with materials, the end face of the opening end of the pressure kettle body 3 is fitted against the cover body and connected by a number of bolts 14; the inner periphery of the opening end is fitted with an ignition seat 2, and a seal is provided at the fitting position between the outer periphery of the ignition seat 2 and the inner periphery of the opening end.

[0033] Among them, mounting holes are evenly arranged on the circumference of the cover body 1 and the pressure-bearing kettle body 3, and screw holes are correspondingly arranged on the circumference of the pressure-bearing kettle body 3. After the cover body 1 and the pressure-bearing kettle body are covered and aligned, each mounting hole corresponds coaxially to the screw hole, and the bolt is screwed into the screw hole, and then a washer 13 and a nut 12 are installed at the other end of the bolt head to realize the covering of the cover body and the pressure-bearing kettle body.

[0034] In order to ensure the high temperature and high pressure resistance of the ignition seat, the material of the ignition seat 2 is monel alloy, which can still maintain good mechanical properties under high temperature and high pressure. The ignition seat made of monel alloy can achieve good mechanical properties under 600°C conditions.

[0035] To ensure that the ignition seat 2 is in full contact with the material in the kettle, the ignition seat 2 is provided with a seat sleeve 201 extending into the interior of the pressure kettle body near the opening end, and an annular groove 19 for installing the ignition coil 20 is circumferentially provided inside the seat sleeve 201. After the ignition coil 20 is installed in the annular groove 19, it is filled with thermal insulation material, and a guide hole 10 for connecting the power-carrying wire of the ignition coil 20 is provided at the portion of the cover body 1 corresponding to the annular groove 19; in this embodiment, to facilitate the limited installation of the ignition seat 2, the thermal insulation layer is arranged in sections, including thermal insulation layer 1 4 and thermal insulation layer 2 5, and thermal insulation layer 1 4 is arranged between the outer periphery of the seat sleeve 201 and the inner periphery of the pressure kettle body 3, thermal insulation layer 2 5 is connected to thermal insulation layer 1 4, and the end face of thermal insulation layer 2 5 corresponding to thermal insulation layer 1 4 is used for limiting the position against the end face of the seat sleeve 201. In the above structure, a hollow section is left at the end of the center of the seat cover 201 for filling the combustion material in the kettle, so that the ignition coil 20 in the annular groove 19 can preferentially heat the material in the center of the seat cover 201 at a close distance and ignite it preferentially.

[0036] In order to ensure the pressure-bearing performance of the sealed connection between the ignition seat 2 and the pressure kettle body 3, the open end of the pressure kettle body 3 is provided with a radially inwardly convex step-shaped sealing groove, and a sealing assembly is arranged in the sealing groove. The sealing assembly includes a gasket 18, a sealing ring 17, a gasket 16 and a pressure cap 15 which are sequentially assembled at the step position. The cover body 1 is provided with a plurality of countersunk screw holes in the circumference corresponding to the pressure cap 15, and bolts 11 for pressing the pressure cap 15 are screwed into the countersunk screw holes.

[0037] In order to facilitate the supply of combustion-supporting gas to the kettle body and the monitoring of the internal temperature and pressure, the pipeline assembly includes an air supply pipeline assembly 8 and a detection pipeline assembly 9. The air supply pipeline assembly 8 is used to transport the combustion-supporting gas to the pressure kettle body 3, and the detection pipeline assembly 9 is used to transmit and connect the pressure and temperature detection elements in the pressure kettle body. The combustion-supporting gas is transported into the kettle through the air supply pipeline assembly 8 to ensure the combustion conditions in the kettle. The temperature, pressure and other detection elements are set in the kettle through the detection pipeline assembly 9 to monitor the temperature and pressure parameters in the kettle to ensure the integrity and authenticity of the simulation experiment data.

[0038] To facilitate the sealed installation and connection of the pipeline assembly, the pipeline assembly structure of this embodiment is illustrated by taking the gas supply pipeline assembly as an example, which specifically includes a delivery conduit 801 connecting the inside and outside of the kettle body and a guide sleeve 802 arranged in cooperation with the outer periphery of the delivery conduit 801; to facilitate the sealed installation of the pipeline assembly, an outer guide hole is provided on the cover body 1, and an inner guide hole coaxial with the outer guide hole is provided on the ignition seat 3, and the delivery conduit 801 and the guide sleeve 802 are passed through the outer guide hole and the inner guide hole; wherein, the outer section of the outer guide hole is fitted with the pressure sleeve 801, the inner guide hole is provided with an internal threaded hole on the side close to the outer guide hole, the guide sleeve 802 is provided with an external thread corresponding to the inner section, and a stage for placing a sealing ring is provided at the end of the internal threaded hole, and a gasket 806, a sealing ring 805, a gasket 804 and a pressure pad 803 are sequentially installed in the stage, and the end of the guide sleeve 802 is pressed against the pressure pad 803, the gasket 804, the sealing ring 805 and the gasket 806 in turn.

[0039] To facilitate the guide sleeve 802 to firmly extrude the seal, one end of the pressure pad 803 extends into the step hole and the other end extends out of the step hole, and the end of the pressure pad 803 extending out of the step hole is a tapered guide end, and the end shape of the guide sleeve 802 is matched with the shape of the tapered guide end, and the outer end of the guide sleeve 802 extends out of the outer guide hole and is provided with a protruding step cap 807.

[0040] In the simulated downhole ignition experimental device of this embodiment, the pressure kettle body 3 is used to fill the combustible material simulating the downhole oil reservoir. The pressure conditions in the downhole can be simulated by pressurizing the kettle. The ignition coil 20 indirectly heats the surrounding materials in the kettle body, and heats the materials near the ignition seat. When the materials are heated to the combustible temperature of the materials, the materials in the kettle are ignited. During this period, the degree of combustion in the kettle can be controlled by controlling the continuous oxygen supply of the pipe assembly, so that the downhole ignition and combustion can be truly simulated. In addition, the indirect heating and ignition by the ignition coil facilitates smooth ignition under high pressure conditions, and rapid ignition is achieved by power control of the ignition coil 20. The continuous combustion after ignition can be controlled by controlling the gas supply of the pipeline assembly. burn time and degree of combustion; through repeated ignition simulation experiments of the experimental device of this embodiment, the optimal ignition process parameters under complex downhole reservoir conditions can be determined to guide downhole operations.

[0041] Example 2

[0042] This embodiment provides a method for simulating and collecting downhole ignition test data using the above-mentioned downhole ignition test device, including the following process:

[0043] The first step is to fill the pressure kettle 3 with a combustible filler that simulates the composition of the downhole oil reservoir. Generally, the experimental downhole oil reservoir can be directly used for filling, and the filling compactness also simulates the compactness of the downhole oil reservoir. Then, the ignition seat 2 and the cover body 1 are sealed and installed from the open end of the pressure kettle body, and the ignition coil 20 and the detection element are electrically connected. At the same time, the detection element is connected to the data acquisition system, and the pressure kettle body 3 is pressurized and maintained for a certain period of time to detect the sealing performance of the inner cavity of the pressure kettle body 3 until the pressure value set in the experiment is reached. In this step, according to the simulated well conditions, the pressure in the kettle can be pressurized up to 20Mpa.

[0044] The second step is to connect the air supply pipeline assembly to the pressure air source to supply the predetermined flow rate of combustion-supporting gas into the kettle, and then energize the ignition coil 20 to heat up the ignition seat 3 and the combustible filler around the ignition seat 3, and the detection element detects and records the temperature and pressure in the kettle until the temperature in the kettle suddenly rises rapidly to determine that the ignition is successful; at the same time, the data acquisition system collects and records the pressure and temperature data in the kettle online after the coil is energized; thus, an ignition experiment with a predetermined pressure is completed;

[0045] The third step is to replace the combustible filler in the pressure kettle, change the flow rate of the supporting gas and the pressure in the kettle, repeat the first and second steps many times, and obtain the experimental data of the ignition temperature and ignition coil parameters under different simulated conditions in the kettle, which are used to analyze and guide the exploitation of heavy oil, extra heavy oil or some dead well oil layers in the well.

[0046] During the above-mentioned experiment, different simulated filling materials can be used, and the pressure in the kettle can be tested up to 20 MPa for simulation experiments of different well conditions, providing rich experimental data for different mid- and late-stage oil wells and heavy oil acquisition.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the embodiments of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A simulated underground ignition test device, characterized in that: It comprises a pressure kettle body, the circumferential wall of the pressure kettle body is provided with a heat-insulating layer, the pressure kettle body is used to be filled with combustion materials simulating downhole oil reservoirs, one end of the pressure kettle body is provided with an open end, and is sealed with a cover body, an ignition seat is sealedly installed on the inner circumference of the open end corresponding to the inner side of the cover body, an ignition coil is provided in the ignition seat, which is used for indirectly heating the inner cavity of the kettle body near the open end, a pipeline assembly connecting the inside and outside of the kettle body is passed through the center of the ignition seat; the ignition seat is provided with a seat sleeve extending into the inside of the pressure kettle body near the open end, an annular groove for installing the ignition coil is provided in the circumferential direction of the seat sleeve, the annular groove is filled with heat-insulating material after the ignition coil is installed, and a guide hole for connecting the wire is provided on the cover body portion corresponding to the annular groove; the heat-insulating layer is arranged in sections, including heat-insulating layer one and heat-insulating layer two, the heat-insulating layer one is arranged between the outer circumference of the seat sleeve and the circumference of the pressure kettle body, and the heat-insulating layer two It is connected to the first insulation layer, and the end surface of the second insulation layer corresponding to the first insulation layer is used to limit the end surface of the seat sleeve; the pipeline assembly includes an air supply pipeline assembly and a detection pipeline assembly, the air supply pipeline assembly is used to transport combustion-supporting gas into the pressure kettle body, and the detection pipeline assembly is used to transmit and connect the pressure and temperature detection elements in the pressure kettle body; the pipeline assembly includes a delivery conduit connecting the inside and outside of the kettle body and a guide sleeve arranged in cooperation with the outer periphery of the delivery conduit, the cover body is provided with an outer guide hole, the ignition seat is provided with an inner guide hole coaxial with the outer guide hole, and the outer guide hole and the inner guide hole pass through the delivery conduit and the guide sleeve; the outer section of the outer guide hole is fitted with the pressing sleeve, the inner guide hole is provided with an internal threaded hole on the side close to the outer guide hole, the guide sleeve is provided with an external thread corresponding to the inner section, the end of the internal threaded hole is provided with a stage for placing a sealing ring, the stage stage is successively equipped with a gasket, a sealing ring, a gasket and a pressure pad, and the end of the guide sleeve is successively against the pressure pad, the gasket, the sealing ring and the gasket.

2. The simulated underground ignition experiment device according to claim 1 is characterized in that: The end surface of the opening end of the kettle body is matched and abutted against the cover body and connected by a plurality of bolts; the inner periphery of the opening end is matched with the ignition seat, and a sealing member is provided at the matching position between the outer periphery of the ignition seat and the inner periphery of the opening end.

3. The simulated underground ignition experiment device according to claim 2 is characterized in that: The material of the ignition seat is monel alloy.

4. The simulated underground ignition experiment device according to claim 2 is characterized in that: The open end of the pressure kettle body is provided with a radially inwardly convex step-shaped sealing groove, and the sealing member is arranged in the sealing groove. The sealing member includes a gasket, a sealing ring, a gasket and a pressure cap which are sequentially assembled on the step position. The cover body is provided with a plurality of screw holes in the circumference corresponding to the pressure cap, and bolts for pressing the pressure cap are screwed into the screw holes.

5. The simulated underground ignition experiment device according to claim 1 is characterized in that: One end of the pressure pad extends into the step hole, and the other end extends out of the step hole, and the end of the pressure pad extending out of the step hole is a tapered guide end, the end shape of the guide sleeve is matched with the shape of the tapered guide end, and the outer end of the guide sleeve extends out of the outer guide hole and is provided with an outwardly protruding step cap.

6. A method for simulating and collecting downhole ignition test data using the downhole ignition test device according to any one of claims 1 to 5, characterized in that: The process includes the following: The first step is to fill the pressure kettle with combustible filler simulating the composition of the downhole reservoir, seal and install the ignition seat and the cover, electrically connect the ignition coil and the detection element, and connect the detection element to the data acquisition system, and pressurize the pressure kettle to a predetermined value and maintain the pressure for a certain period of time to detect the sealing performance of the pressure kettle until the pressure value set in the experiment is reached; The second step is to connect the air supply pipeline assembly to the pressure air source, supply combustion-supporting air to the kettle at a predetermined flow rate, and then energize the ignition coil to heat up the ignition seat and the combustible filler around the ignition seat. The detection element detects and records the temperature and pressure in the kettle until the temperature in the kettle suddenly rises rapidly to confirm that the ignition is successful. At the same time, the data acquisition system collects and records the pressure and temperature data in the kettle online after the coil is energized. The third step is to replace the combustible filler in the pressure kettle, change the flow rate of the supporting gas and the pressure in the kettle, repeat the first and second steps, and obtain the experimental data of the ignition temperature and ignition coil parameters under different simulated conditions in the kettle, which will be used to analyze and guide the exploitation of heavy oil, extra heavy oil or some dead well oil layers in the well.

7. The method for simulating and collecting downhole ignition test data according to claim 6, characterized in that: In the first step, the pressure value set in the pressure vessel body experiment is 6 to 20 MPa.

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