Simulation experiment device for hot liquid corrosion transformation of deep oil and gas reservoir

Abstract

The utility model discloses a simulation experiment device for hot liquid corrosion modification of a deep oil and gas reservoir, which comprises a high-temperature and high-pressure reaction kettle, a plurality of support columns are uniformly arranged on the lower surface of the high-temperature and high-pressure reaction kettle, a kettle cover is arranged on the upper surface of the high-temperature and high-pressure reaction kettle, and a detection device is further arranged on the high-temperature and high-pressure reaction kettle. At least two hydrothermal fluid tanks are arranged on the outer side of the high-temperature and high-pressure reaction kettle, each hydrothermal fluid tank is communicated with the high-temperature and high-pressure reaction kettle through a liquid inlet pipe, and a liquid inlet pump is arranged on each hydrothermal fluid tank. A plurality of independent hydrothermal fluid tanks are arranged to feed related hydrothermal fluids in different areas into a high-temperature and high-pressure reaction kettle through respective liquid inlet pipes, so that the fluids directly contact and react with a reservoir in the high-temperature and high-pressure reaction kettle, and the corrosion reaction of fluids from different sources in the reservoir is better simulated; and the high-temperature and high-pressure corrosion transformation process of a deep oil and gas reservoir can be simulated more truly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reservoir geology, specifically to a simulation experiment device for deep oil and gas reservoir hydrothermal dissolution reconstruction. BACKGROUND

[0002] In the formation process of deep oil and gas reservoirs, in addition to the influence of sedimentation and structure, they may also be affected by deep hydrothermal fluid, resulting in obvious heterogeneity in the spatial distribution of the reservoirs. After the reservoirs are reconstructed by hydrothermal dissolution, they often become favorable places for deep oil and gas accumulation. In the analysis of the deep oil and gas accumulation process, how to predict favorable reservoir zones and study the reconstruction effect of deep hydrothermal fluid on the reservoirs is a problem to be solved in the field.

[0003] In the prior art, the experimental device for studying the hydrothermal dissolution reconstruction of deep oil and gas reservoirs is mostly configured with relevant hydrothermal fluid outside the device, which is input from one inlet. However, in the actual geological dissolution reconstruction process, the hydrothermal fluid is often one or several from different areas, which enters the deep high-temperature and high-pressure reservoir for dissolution reconstruction. Moreover, the gas inlet device of the existing experimental device often does not distinguish between hydrocarbon and non-hydrocarbon gases, but the reconstruction of deep oil and gas reservoirs often involves the participation of hydrocarbon gases, especially the formation of asphaltene membrane under the action of high-temperature roasting in the deep part, which further affects the cracks or pores of the reservoir. These problems result in low fidelity of the simulation experiment of the existing experimental device, incomplete experimental simulation, and are not conducive to predicting favorable reservoir zones and studying the reconstruction effect of deep hydrothermal fluid on the reservoirs. UTILITY MODEL CONTENT

[0004] The utility model wants to solve the technical problem of overcoming the existing defects, providing a simulation experiment device for deep oil and gas reservoir hydrothermal dissolution reconstruction, which can more realistically simulate the deep oil and gas reservoir hydrothermal dissolution reconstruction, the experimental simulation is more comprehensive, and different simulation experiments can be flexibly carried out by controlling the amount and speed of different fluids and gases entering the high-temperature and high-pressure reaction kettle, which is conducive to predicting favorable reservoir zones and studying the reconstruction effect of deep hydrothermal fluid on the reservoirs, and can effectively solve the problems in the background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of simulation experiment device for deep oil and gas reservoir hydrothermal solution corrosion reconstruction, including high temperature and high pressure reaction kettle, the lower surface of high temperature and high pressure reaction kettle is evenly provided with several support columns, the upper surface of high temperature and high pressure reaction kettle is provided with kettle cover, and detection device is also provided on the high temperature and high pressure reaction kettle, the outside of high temperature and high pressure reaction kettle is provided with not less than two hydrothermal fluid tanks, each hydrothermal fluid tank is communicated with high temperature and high pressure reaction kettle by one liquid inlet pipe, and hydrothermal fluid tank is provided with liquid inlet pump, the liquid outlet end of liquid inlet pump is communicated with liquid inlet pipe, and fluid seal valve is provided on liquid inlet pipe near high temperature and high pressure reaction kettle;The outside of high temperature and high pressure reaction kettle is respectively provided with one non-hydrocarbon gas tank and one hydrocarbon gas tank, and the non-hydrocarbon gas tank and the hydrocarbon gas tank are communicated with high temperature and high pressure reaction kettle by one gas inlet pipe, and one gas pump is respectively provided on the non-hydrocarbon gas tank and the hydrocarbon gas tank, the gas outlet end of gas pump is communicated with gas inlet pipe, and gas seal valve is provided on gas inlet pipe near high temperature and high pressure reaction kettle;The outside surface of high temperature and high pressure reaction kettle is provided with control panel, and the lower side of high temperature and high pressure reaction kettle is provided with sample extractor.

[0006] As a preferred technical scheme of the utility model, the detection device includes a temperature sensor and a pressure sensor.

[0007] As a preferred technical scheme of the utility model, the liquid inlet pipe is further provided with a fluid check valve.

[0008] As a preferred technical scheme of the utility model, the liquid inlet pipe is further provided with a liquid flow meter, and the liquid flow meter is arranged between the fluid check valve and the fluid seal valve.

[0009] As a preferred technical scheme of the utility model, the gas inlet pipe is provided with a gas check valve.

[0010] As a preferred technical scheme of the utility model, the gas inlet pipe is further provided with a gas flow meter, and the gas flow meter is arranged between the gas check valve and the gas seal valve.

[0011] As a preferred technical scheme of the utility model, the high temperature and high pressure reaction kettle is internally provided with a core clamping device.

[0012] As a preferred technical scheme of the utility model, the high temperature and high pressure reaction kettle is internally provided with a sample kettle.

[0013] Compared with the prior art, the beneficial effects of the utility model are: through setting multiple individual hot liquid tanks, the related hot liquid of different areas is sent into the high-temperature high-pressure reaction kettle through the respective liquid inlet pipes, so that the fluid is directly contacted and reacted with the reservoir in the high-temperature high-pressure reaction kettle, the dissolution reaction of the fluid of different sources in the reservoir is better simulated, the high-temperature high-pressure dissolution reconstruction process of the deep oil and gas reservoir is more close to the real simulation; meanwhile, the non-hydrocarbon gas tank and the hydrocarbon gas tank are arranged, respectively through the respective gas inlet pipes, CO2, N2, H2S and other non-hydrocarbon gases and CH4 and other hydrocarbon gases are sent into the high-temperature high-pressure reaction kettle, the hot liquid dissolution reconstruction of the deep oil and gas reservoir can be more truly simulated, the experimental simulation is more comprehensive, and different simulation experiments can be flexibly carried out by controlling the entering amount and speed of different fluids and gases into the high-temperature high-pressure reaction kettle, which is beneficial to predicting the beneficial reservoir zone and researching the reconstruction effect of the deep hot liquid on the reservoir. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural schematic diagram of the utility model;

[0015] Fig. 2 It is the side view structural schematic diagram of the utility model.

[0016] In the drawing: 1 high-temperature high-pressure reaction kettle, 2 support column, 3 kettle cover, 4 hot liquid tank, 5 liquid inlet pipe, 6 fluid sealing valve, 7 fluid check valve, 8 liquid flow meter, 9 non-hydrocarbon gas tank, 10 gas inlet pipe, 11 gas sealing valve, 12 gas check valve, 13 gas flow meter, 14 hydrocarbon gas tank, 15 detection device, 16 control panel, 17 sample outlet. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0018] Please refer to Figs. 1-2The utility model provides a technical scheme: a simulation experiment device for hydrothermal solution corrosion reconstruction of deep oil and gas reservoir, including high temperature and high pressure reation kettle 1, the lower surface of high temperature and high pressure reation kettle 1 is evenly provided with a plurality of support column 2, the upper surface of high temperature and high pressure reation kettle 1 is provided with kettle cover 3, and the reservoir sample can be put into high temperature and high pressure reation kettle 1 by opening kettle cover 3, and kettle cover 3 is sealed kettle cover, can guarantee the high temperature and high pressure environment in high temperature and high pressure reation kettle 1. High temperature and high pressure reation kettle 1 is provided with heating equipment and pressurizing equipment etc., and still be provided with detection device 15 on high temperature and high pressure reation kettle 1, and detection device 15 includes temperature sensor and pressure sensor etc., is used for detecting the temperature and pressure in high temperature and high pressure reation kettle 1 respectively and cooperates heating equipment and pressurizing equipment work.

[0019] The heating equipment and pressurizing equipment and temperature sensor and pressure sensor etc. in the high temperature and high pressure reation kettle 1 are all the commonly used equipment or devices etc. in the existing reaction kettle, and the specific structure and working principle etc. are all known technology, which will not be described in detail here.

[0020] The outside surface of high temperature and high pressure reation kettle 1 is provided with control panel 16, and control panel 16 is electrically connected with external power supply, heating equipment and pressurizing equipment and temperature sensor and pressure sensor etc., and the temperature and pressure etc. of simulation experiment are controlled through control panel 16.

[0021] The downside of high temperature and high pressure reation kettle 1 is provided with sample extractor 17, and sample extractor 17 adopts the sample extractor commonly used in the existing experimental reaction kettle, so that the sample after experiment can be taken out for research.

[0022] The outside of high temperature and high pressure reation kettle 1 is provided with more than three hot liquid tanks 4, each hot liquid tank 4 is communicated with high temperature and high pressure reation kettle 1 through an inlet pipe 5, and the inlet pump is arranged on the hot liquid tank 4, the outlet end of the inlet pump is communicated with the inlet pipe 5, the liquid in the hot liquid tank 4 is sent to the high temperature and high pressure reation kettle 1 through the inlet pump, and the fluid sealing valve 6 is arranged on the inlet pipe 5 close to the high temperature and high pressure reation kettle 1, the liquid sealing valve 6 can be selected as the electromagnetic valve, the end of the inlet pipe 5 is sealed when the liquid delivery is completed to carry out the high temperature and high pressure experiment, and the sealing property of the high temperature and high pressure reation kettle 1 is guaranteed.

[0023] By arranging a plurality of separate hot liquid tanks 4, different areas of the high temperature and high pressure reation kettle 1 are sent into the related hot liquid of different sources through the respective inlet pipes 5, so that the fluid in the high temperature and high pressure reation kettle 1 directly contacts and reacts with the reservoir, better simulates the solution corrosion reaction of different source fluids in the reservoir, and can be closer to the real simulation of the high temperature and high pressure solution corrosion reconstruction process of deep oil and gas reservoir.

[0024] A high-temperature and high-pressure reaction kettle 1 is provided with a non-hydrocarbon gas tank 9 and a hydrocarbon gas tank 14 outside, the non-hydrocarbon gas tank 9 and the hydrocarbon gas tank 14 are communicated with the high-temperature and high-pressure reaction kettle 1 through a gas inlet pipe 10, the non-hydrocarbon gas tank 9 and the hydrocarbon gas tank 14 are respectively provided with a gas pump, the gas outlet end of the gas pump is communicated with the gas inlet pipe 10, the corresponding gas in the non-hydrocarbon gas tank 9 and the hydrocarbon gas tank 14 is transported into the high-temperature and high-pressure reaction kettle 1 through the gas pump for reaction, and the gas inlet pipe 10 is provided with a gas sealing valve 11 near the high-temperature and high-pressure reaction kettle 1, the gas sealing valve 11 can be selected as an electromagnetic valve, the end of the gas inlet pipe 10 is sealed when the liquid transportation is completed to ensure the sealing of the high-temperature and high-pressure reaction kettle 1.

[0025] The non-hydrocarbon gas tank 9 and the hydrocarbon gas tank 14 send CO2, N2, H2S and other non-hydrocarbon gases and CH4 and other hydrocarbon gases into the high-temperature and high-pressure reaction kettle 1 through the respective gas inlet pipes 10, which are used for studying the influence of the hydrocarbon gas on the reservoir dissolution reconstruction process, can more truly simulate the hydrothermal dissolution reconstruction of the deep oil and gas reservoir, the experimental simulation is more comprehensive, and different simulation experiments can be flexibly carried out by controlling the entering amount and speed of different fluids and gases into the high-temperature and high-pressure reaction kettle 1, which is beneficial to predict the favorable reservoir zone and study the reconstruction effect of the deep hydrothermal fluid on the reservoir.

[0026] In the preferred technical solution, the liquid inlet pipe 5 is further provided with a fluid one-way valve 7, which can prevent the reverse flow of the fluid and is beneficial to maintain the pressure level in the high-temperature and high-pressure reaction kettle 1.

[0027] In the preferred technical solution, the liquid inlet pipe 5 is further provided with a liquid inlet flow meter 8, the liquid inlet flow meter 8 is arranged between the fluid one-way valve 7 and the fluid sealing valve 6, the liquid inlet flow meter 8 is used for detecting the flow of different fluids entering the high-temperature and high-pressure reaction kettle 1 and transmitting corresponding signals to the controller arranged on the control panel 16, the switch of the liquid inlet pump is automatically controlled by the pre-set program of the controller, so that the total amount of the corresponding fluid entering the high-temperature and high-pressure reaction kettle 1 is accurately controlled, and the simulation experiment is more accurate.

[0028] In the preferred technical solution, the gas inlet pipe 10 is provided with a gas one-way valve 12, which can prevent the reverse flow of the gas and is beneficial to maintain the pressure level in the high-temperature and high-pressure reaction kettle 1.

[0029] Preferably, the gas inlet pipe 10 is further provided with a gas flow meter 13, which is arranged between the gas check valve 12 and the gas sealing valve 11, and is used to detect the flow of different gases entering the high-temperature and high-pressure reactor 1, and transmit corresponding signals to the controller arranged on the control panel 16, so that the opening and closing of the gas pump is automatically controlled according to the pre-set program of the controller, thereby accurately controlling the total amount of corresponding gases entering the high-temperature and high-pressure reactor 1, and further improving the accuracy of the simulation experiment.

[0030] The fluid sealing valve 6, the gas sealing valve 11, the heating device, the pressurizing device, the temperature sensor, the pressure sensor, the liquid inlet pump, the gas pump, the gas flow meter 13, the liquid inlet flow meter 8 and the like of the high-temperature and high-pressure reactor 1 are electrically connected to the controller arranged on the control panel 16, which can be a PLC controller or a single-chip microcomputer processor commonly used in the prior art, such as a PLC controller of the S7-200 series of Siemens, and the controller controls the above-mentioned devices and electronic elements in a manner commonly used in the prior art, and the controller, the fluid sealing valve 6, the gas sealing valve 11, the heating device, the pressurizing device, the temperature sensor, the pressure sensor, the liquid inlet pump, the gas pump, the gas flow meter 13 and the liquid inlet flow meter 8 used in the application are all devices or electronic elements commonly used in the prior art, and their specific structure, working principle and circuit connection are all known technologies, which will not be described in detail here.

[0031] Optionally, the high-temperature and high-pressure reactor 1 is internally provided with a core clamping device, such as a core holder, for conducting experiments on the plunger-shaped reservoir sample.

[0032] Optionally, the high-temperature and high-pressure reactor 1 is internally provided with a sample reactor for conducting experiments on the granular reservoir sample.

[0033] The undisclosed parts in the utility model are all prior art, and their specific structure, materials and working principle will not be described in detail. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A simulation experimental device for hydrothermal dissolution modification of deep oil and gas reservoirs, comprising a high-temperature and high-pressure reactor (1), wherein a plurality of support columns (2) are uniformly arranged on the lower surface of the high-temperature and high-pressure reactor (1), and a reactor lid (3) is provided on the upper surface of the high-temperature and high-pressure reactor (1), and a detection device (15) is also provided on the high-temperature and high-pressure reactor (1), characterized in that: The high-temperature and high-pressure reaction kettle (1) is provided with no less than two hot liquid tanks (4) outside, each of which is communicated with the high-temperature and high-pressure reaction kettle (1) through an inlet pipe (5), and the hot liquid tank (4) is provided with an inlet pump, the outlet end of which is communicated with the inlet pipe (5), and the inlet pipe (5) is provided with a fluid sealing valve (6) near the high-temperature and high-pressure reaction kettle (1); the high-temperature and high-pressure reaction kettle (1) is provided with a non-hydrocarbon gas tank (9) and a hydrocarbon gas tank (14) outside, respectively, the non-hydrocarbon gas tank (9) and the hydrocarbon gas tank (14) are communicated with the high-temperature and high-pressure reaction kettle (1) through an inlet pipe (10), respectively, the non-hydrocarbon gas tank (9) and the hydrocarbon gas tank (14) are provided with a gas pump, respectively, the outlet end of which is communicated with the inlet pipe (10), and the inlet pipe (10) is provided with a gas sealing valve (11) near the high-temperature and high-pressure reaction kettle (1); the outer surface of the high-temperature and high-pressure reaction kettle (1) is provided with a control panel (16), and the lower side of the high-temperature and high-pressure reaction kettle (1) is provided with a sample extractor (17).

2. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 1, characterized in that: The detection device (15) comprises a temperature sensor and a pressure sensor.

3. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 1, characterized in that: The inlet pipe (5) is further provided with a fluid check valve (7).

4. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 3, characterized in that: The inlet pipe (5) is further provided with an inlet flow meter (8), which is arranged between the fluid check valve (7) and the fluid sealing valve (6).

5. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 1, characterized in that: The inlet pipe (10) is provided with a gas check valve (12).

6. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 5, characterized in that: The inlet pipe (10) is further provided with a gas flow meter (13), which is arranged between the gas check valve (12) and the gas sealing valve (11).

7. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 1, characterized in that: The high-temperature and high-pressure reaction kettle (1) is provided with a core clamping device inside.

8. The experimental device for simulating the hydrothermal dissolution reconstruction of deep oil and gas reservoirs according to claim 1, characterized in that: The high-temperature and high-pressure reaction kettle (1) is provided with a sample kettle inside.

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