CN217638923U - Cleanup additive performance evaluation device - Google Patents
Cleanup additive performance evaluation device Download PDFInfo
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- CN217638923U CN217638923U CN202220509748.4U CN202220509748U CN217638923U CN 217638923 U CN217638923 U CN 217638923U CN 202220509748 U CN202220509748 U CN 202220509748U CN 217638923 U CN217638923 U CN 217638923U
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Abstract
The utility model discloses a help and arrange agent performance evaluation device. This helps calandria performance evaluation device, include the injection unit through the tube coupling, model unit and metering unit, the injection unit includes the injection pump, injection container and air supply, model unit includes the porous medium model, metering unit includes vapour and liquid separator, balance and gas flowmeter, simultaneously at the porous medium model with inject into the container, be equipped with independent control's valve between air supply and the vapour and liquid separator respectively, thereby start and stop the action and start and stop of opening and stopping of injection pump and air supply through controlling opening and close between the different valves, just can be under the condition of any repeated dismouting operation not, accomplish in proper order and help calandria performance test and introduce the operation of different injection agents and gas in the porous medium model, greatly reduced manual operation's the amount of labour, reduce the interference to the experimentation, improve the accuracy of evaluation experimental result.
Description
Technical Field
The utility model belongs to the technical field of coal bed gas development experimental facilities, in particular to help and arrange agent performance evaluation device.
Background
In the coal bed gas development stage, evaluation experiment tests need to be carried out according to different performance parameters. At present, conventional evaluation experimental equipment is single in function and simple in structure, and can only test and operate single performance parameters. In addition, in the process of carrying out partial performance test, the pipeline needs to be repeatedly disassembled and assembled for connection so as to meet the requirement of sequentially adding different injection agents in the test process, so that not only is the labor amount increased by repeated disassembly and assembly, but also the experimental environment is easily changed in the repeated disassembly and assembly process, the experimental data is deviated, and the accuracy of the experimental result is influenced.
SUMMERY OF THE UTILITY MODEL
To address the above issues, the present invention discloses a cleanup additive performance evaluation device to overcome the above problems or at least partially solve the above problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cleanup additive performance evaluation device comprises an injection unit, a model unit and a metering unit; the injection unit comprises an injection pump, an injection container and a gas source, the model unit comprises a porous medium model, and the metering unit comprises a gas-liquid separator, a balance and a gas flowmeter;
the inlet of the injection pump is communicated with a driving medium, the outlet of the injection pump is communicated with the inlet of the injection container, the outlet of the injection container is selectively communicated with the inlet of the porous medium model, and an injection agent is arranged in the injection container; the outlet of the gas source is selectively communicated with the inlet of the porous medium model; the outlet of the porous medium model is selectively communicated with the gas-liquid separator, the gas-liquid separator is positioned on the balance, and the inlet of the gas flowmeter is communicated with the gas-liquid separator; the outlet of the injection container is provided with a pressure detector which can detect the pressure of the injection agent output by the injection container and the pressure of the gas output by the gas source;
the outlet of the gas source is provided with a first valve, the inlet of the porous medium model is provided with a second valve and a third valve, one end of the second valve is communicated with the first valve and the outlet of the injection container, the other end of the second valve is communicated with the inlet of the porous medium model, one end of the third valve is communicated with the inlet of the porous medium model, and the other end of the third valve is communicated with the inlet of the gas-liquid separator; the outlet of the porous medium model is provided with a fourth valve and a fifth valve, the other end of the fourth valve is communicated with the inlet of the gas-liquid separator, the other end of the fifth valve is communicated with a pipeline between the first valve and the second valve, and the porous medium model is further provided with an exhaust valve.
Optionally, the injection unit includes a plurality of injection containers, and both ends of each injection container are respectively provided with a control valve; the outlet of the injection pump is communicated with the inlets of the plurality of injection containers in parallel, and the outlets of the plurality of injection containers are communicated with the inlet of the porous medium model in parallel.
Optionally, the injection container is a dosing container.
Optionally, the injection unit further comprises a gas quantitative injector; the gas quantitative injector is positioned at the outlet position of the gas source.
Optionally, the model unit further comprises a ring pressure loading pump; and the ring pressure loading pump is communicated with the porous medium model and is used for applying ring sealing pressure to the porous medium model.
Optionally, the cleanup additive performance evaluation device further comprises a back pressure valve and a back pressure pump; the back pressure valve is positioned at the inlet of the gas-liquid separator, and the back pressure pump is connected with the back pressure valve.
Optionally, the cleanup additive performance evaluating device further comprises a sample chamber and a reference chamber; the sample chamber and the reference chamber are positioned at a pipeline between the first valve and the second valve, and the outlet of the sample chamber and the outlet of the reference chamber are respectively provided with a control valve; the pressure detector is capable of detecting a pressure of the sample chamber and a pressure of the reference chamber.
Optionally, the cleanup additive performance evaluation device further comprises a sand-filling model and a vacuum pump; the sand filling model and the porous medium model are arranged in parallel and can be switched with the porous medium model; and the vacuum pump is communicated with the inlet of the sand-packed model through the second valve.
Optionally, the sand-packed model is a high-pressure sand-packed model or a visual sand-packed model.
Optionally, the metering unit comprises a plurality of gas flow meters with different ranges, and the plurality of gas flow meters are communicated with the gas-liquid separator in parallel.
The utility model has the advantages and beneficial effects that:
the utility model discloses an among the discharge aiding agent performance evaluation device, through setting up the injection unit by the tube coupling, model unit and metering unit, and the injection unit includes the injection pump, injection container and air supply, the model unit includes the porous medium model, the metering unit includes vapour and liquid separator, balance and gas flowmeter, simultaneously at the porous medium model and injection container, be equipped with independent control's valve between air supply and the vapour and liquid separator respectively, thereby through opening and close the action between the different valves of control and opening of injection pump and opening and stop of air supply, just can be under the condition that does not carry out any dismouting operation repeatedly, introduce different injection agents and gaseous operation in the discharge aiding agent performance test to the porous medium model in accomplishing in proper order, greatly reduced manual operation's the amount of labour, reduce the interference to the experimentation, improve the accuracy of evaluation experiment result.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a system schematic diagram of a cleanup additive performance evaluation device according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to perform clear and complete description of the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment discloses a cleanup additive performance evaluation apparatus, which includes an injection unit 1, a model unit 2, and a metering unit 3. Wherein the injection unit 1 comprises an injection pump 11, four injection containers 12 and a gas source 13. The model unit 2 includes a porous medium model 21. The metering unit 3 includes a gas-liquid separator 31, a balance 32, and a gas flow meter 33. Meanwhile, the injection unit 1, the model unit 2 and the metering unit 3 are respectively designed in a modular structure and are connected and assembled with each other through a pipeline.
The inlet of the injection pump 11 is communicated with the driving medium, the outlet of the injection pump 11 is respectively communicated with the inlets of the four injection containers 12, and the interiors of the four injection containers 12 are respectively provided with the injection agent. The outlets of the four injection containers 12 are in parallel connection with the inlet of the porous medium model 21 to form selective communication, and a pressure detector 51 is arranged at the position after the outlets of the four injection containers 12 are in parallel connection, and the pressure detector 51 can detect the pressure of the injection agent output by the injection container 12. Meanwhile, two ends of each injection container 12 of the present embodiment are respectively provided with a corresponding control valve for controlling the opening and closing of the inlet and the outlet of the corresponding injection container 12, so as to accurately control the switching of the work among the four injection containers 12.
The outlet of the gas source 13 is provided with a pressure regulating valve 131 and a first valve 41, the pressure regulating valve 131 is used for regulating the pressure of the gas output by the gas source 13, the first valve 41 is used for controlling the gas output by the gas source 13, and the pressure detector 51 can detect the pressure of the gas output by the gas source 13. The gas-liquid separator 31 is located on the balance 32, and the inlet of the gas flow meter 33 communicates with the gas-liquid separator 31.
Meanwhile, the inlet of the porous medium model 21 is provided with a second valve 42 and a third valve 43, one end of the second valve 42 is communicated with the first valve 41 and the outlet of the injection container 12, and the other end is directly communicated with the inlet of the porous medium model 21; one end of the third valve 43 is directly communicated with the inlet of the porous medium model 21, and the other end is directly communicated with the inlet of the gas-liquid separator 31. The outlet of the porous medium model 21 is provided with a fourth valve 44, and one end of the fourth valve 44 is directly connected with the outlet of the porous medium model 21, and the other end is directly communicated with the inlet of the gas-liquid separator 31. In addition, the cleanup additive performance evaluation device is further provided with a fifth valve 45, and one end of the fifth valve 45 is communicated with the pipeline between the first valve 41 and the second valve 42, and the other end is directly communicated with the outlet of the porous medium model 21. Meanwhile, an exhaust valve 211 is provided on the porous medium pattern 21.
At this time, the specific steps of the cleanup additive performance test performed by using the cleanup additive performance evaluation apparatus of the present embodiment are as follows:
step S1, preparation work is carried out. Virgin formation water as an injection agent and formation water containing a drainage aid are charged into the interiors of at least two injection containers 12, respectively. Meanwhile, the sample to be tested is loaded in the porous medium model 21, the sealing joint of the porous medium model 21 is installed, and the porous medium model 21 is correspondingly connected with the injection container 12, the gas source 13 and the gas-liquid separator 31 through pipelines and valves.
And S2, injecting original formation water. Opening an external discharge valve 211, closing a first valve 41, a second valve 42, a third valve 43 and a fourth valve 44, opening a fifth valve 45 and two-end control valves of an injection container 12 provided with original formation water, starting an injection pump 11, conveying a driving medium to the injection container 12 by the injection pump 11 in a constant flow manner, for example, 1ml/min, further pushing out the original formation water in the injection container 12 and making the original formation water enter the porous medium model 21 through the fifth valve 45, closing the external discharge valve 211 and opening the third valve 43 until the liquid flows out from the external discharge valve 211 and no bubbles flow out, making the original formation water flowing into the porous medium model 21 flow into the gas-liquid separator 31 through the third valve 43, and closing the injection pump 11 and the two-end control valves of the injection container 12 after the pressure of the pressure detector 51 is stabilized and the liquid flow data in the gas-liquid separator 31 fed back by the balance 32 are stabilized, and cutting off the communication relationship between the injection container 12 and the porous medium model 21, thereby completing the injection operation of the original formation water.
And S3, performing reverse gas displacement. And (3) opening the first valve 41, the second valve 42 and the fourth valve 44, closing the third valve 43 and the fifth valve 45, outputting pressure gas into the porous medium model 21 through the gas source 13, displacing liquid in the porous medium model 21 out and flowing into the gas-liquid separator 31, and closing the first valve 41 after no liquid flows into the gas-liquid separator 31 any more and the pressure of the pressure detector 51 and the liquid flow data in the gas-liquid separator 31 fed back by the balance 32 are stable, recording the volume of the liquid displaced by the gas and measuring the relative permeability of the gas.
And step S4, injecting the cleanup additive. Opening an external discharge valve 211, closing a first valve 41, a second valve 42, a third valve 43 and a fourth valve 44, opening a fifth valve 45 and two-end control valves of an injection container 12 provided with a discharge assistant, starting an injection pump 11, conveying a driving medium to the injection container 12 by the injection pump 11 in a constant flow mode, such as 1ml/min, further injecting formation water containing the discharge assistant in the injection container 12 into the porous medium model 21 through the fifth valve 45 until the outflow liquid at the external discharge valve 211 flows out and no bubbles flow out, closing the external discharge valve 211 and opening the third valve 43, allowing the formation water flowing into the porous medium model 21 and containing the discharge assistant to flow into the gas-liquid separator 31 through the third valve 43, and after the pressure of the pressure detector 51 is stabilized and the liquid flow data in the gas-liquid separator 31 fed back by the pressure detector 32 are stabilized, closing the injection pump 11 and the two-end control valves of the injection container 12, cutting off the communication between the injection container 12 and the porous medium model 21, thereby completing the balance operation of the discharge assistant.
And step S5, performing reverse gas displacement. And (3) opening the first valve 41, the second valve 42 and the fourth valve 44, closing the third valve 43 and the fifth valve 45, outputting pressure gas into the porous medium model 21 through the gas source 13, displacing liquid in the porous medium model 21 out and flowing into the gas-liquid separator 31, and closing the first valve 41 after no liquid flows into the gas-liquid separator 31 any more and the pressure of the pressure detector 51 and the liquid flow data in the gas-liquid separator 31 fed back by the balance 32 are stable, recording the volume of the liquid displaced by the gas and measuring the relative permeability of the gas.
And step S6, evaluating the performance of the cleanup additive. And (5) evaluating the performance of the discharge assistant agent to be tested according to the volume of the liquid displaced by the gas obtained in the step (S3) and the measured relative gas permeability, and the volume of the liquid displaced by the gas obtained in the step (S5) and the measured relative gas permeability.
In the preparation process of the step S1, the sealing performance of the whole cleanup additive performance evaluation device may be tested by a gas source, and after the sealing performance of the whole cleanup additive performance evaluation device is ensured to be intact, the subsequent steps are performed.
Further, in the cleanup additive performance evaluation device of this embodiment, the pressure detector employs a pressure sensor to remotely obtain a pressure signal, and performs experimental process control, such as opening and closing of the injection pump and the air source, opening and closing of the valve, and acquisition of balance data, with the aid of a digital acquisition control unit composed of a PLC controller, a digital feedback board, and data acquisition and control software. The PLC and the digital control feedback board can realize communication connection between software and the PLC, and the data acquisition and control software can remotely control and acquire experimental data and bring the acquired data into a related calculation formula to directly calculate the experimental data and perform timing recording. Therefore, the automatic operation of the whole experiment process can be realized through the digital acquisition control unit, the experiment precision is improved, and the manual labor amount is reduced.
As shown in fig. 1, four injection containers 12 are provided in the cleanup additive performance evaluation apparatus of the present embodiment, and the four injection containers 12 are arranged in parallel. Thus, different injection agents can be arranged in different injection containers, and therefore rapid injection operation of different injection agents into the porous medium model is achieved. Of course, in other embodiments, the number of injection vessels may be adjusted to meet different experimental requirements, depending on the use and experimental requirements. In this embodiment, a fixed-quantity injection container is used as the injection container. Therefore, the quantitative output of the medium in the injection container can be realized, so that the medium output precision is improved, and the experiment precision is improved.
Further, three gas flow meters 33 of different ranges are provided in the metering unit 3 of the present embodiment, and the three gas flow meters 33 are provided in parallel to be respectively brought into communicating relation with the gas-liquid separator 31. Therefore, according to the requirements of different experiments, the gas flow meters with different ranges are selected for gas flow measurement, so that the measurement precision of the gas flow is improved, and the accuracy of the experiment result is improved.
In addition, a dryer 34 is provided between the gas-liquid separator 31 and the gas flow meter 33 to dry the gas entering the gas flow meter 33, thereby further improving the measurement accuracy of the gas.
As shown in fig. 1, the injection unit 1 of the cleanup additive performance evaluation apparatus of the present embodiment further includes a gas quantitative injector 14 and a gas source switch 15. Wherein, gas source switch 15 and gaseous quantitative injector 14 set gradually in the exit position of air supply 13, are used for carrying out the open and close control and the quantitative output control of gaseous output to air supply 13 respectively to realize gaseous quantitative output, improve experiment control accuracy.
In addition, a ring pressure loading pump 22 is provided in the model unit 2 of the present embodiment. Wherein, the ring pressure loading pump 22 is connected with the porous medium model 21 through a manual valve 23 and is used for applying ring sealing pressure to the porous medium model 21. Thus, during the preparation in step S1, a ring seal pressure may be applied to the porous medium pattern by the ring pressure loading pump.
In addition, the drainage-aid performance evaluation device of the present embodiment is further provided with a back pressure valve 61, a back pressure pump 62, and a back pressure accumulator 63. Wherein the back pressure valve 61 is located at an inlet position of the gas-liquid separator 31, and the back pressure pump 62 is connected to the back pressure valve 61 through a back pressure accumulator 63. The inlet position of the gas-liquid separator can be formed with reflux pressure by the back pressure pump, the back pressure accumulator and the back pressure valve, so that the fluid flows into the gas-liquid separator at a certain pressure.
As shown in fig. 1, the cleanup additive performance evaluating apparatus of the present embodiment further includes a sample chamber 71 and a reference chamber 72. Wherein the sample chamber 71 and the reference chamber 72 are respectively provided with valves and are connected in parallel with the piping between the first valve 41 and the second valve 42, control valves are respectively provided at the outlet of the sample chamber 71 and the outlet of the reference chamber 72, and the pressure detector 51 is located at a position near the outlet of the sample chamber 71 and the outlet of the reference chamber 72 so as to be able to detect the pressure of the sample chamber 71 and the pressure of the reference chamber 72.
At this time, by arranging the sample chamber and the reference chamber, the rock core can be subjected to porosity test operation by using the cleanup additive performance evaluation device of the embodiment, and the specific process is as follows:
step T1, firstly, closing the second valve 42 and the fifth valve 45, cutting off the communication relation between the porous medium model 21 and the gas source 13, simultaneously filling a standard steel block in the sample chamber 71, opening the first valve 41, and filling helium with the pressure of 100-285 psi into the reference chamber 72 through the gas source 13; then, the valves of sample chamber 71 and reference chamber 72 are opened until the pressure of pressure detector 51 stabilizes, i.e., the pressure between sample chamber 71 and reference chamber 72 reaches equilibrium, at which time the equilibrium pressure data of pressure detector 51 is recorded.
Step T2, firstly, evacuating the pressure in the sample chamber 71 and the reference chamber 72 through the sixth valve 46, taking out the No. 1 standard steel block from the sample chamber 71, and filling helium gas with the pressure of 100-285 psi into the reference chamber 72 again in the mode of the step T1; then, the valves of sample chamber 71 and reference chamber 72 are opened again until the pressure of pressure detector 51 stabilizes again, i.e., the pressure between sample chamber 71 and reference chamber 72 reaches equilibrium, at which point the equilibrium pressure data of pressure detector 51 is again recorded.
Step T3, firstly, the pressure in the sample chamber 71 and the reference chamber 72 is exhausted again through the sixth valve 46, the No. 2 standard steel block is taken out from the sample chamber 71, and then helium with the pressure of 100-285 psi is filled in the reference chamber 72 in the mode of the step T1; then, the valves of sample chamber 71 and reference chamber 72 are opened again until the pressure of pressure detector 51 stabilizes again, i.e., the pressure between sample chamber 71 and reference chamber 72 reaches equilibrium, and the equilibrium pressure data of pressure detector 51 at this time is recorded again.
Step T4, firstly, putting the core to be tested into the sample chamber 71, and filling helium with the pressure of 100-285 psi into the reference chamber 72 in the mode of the step T1; then, the valve of the sample chamber 71 and the valve of the reference chamber 72 are opened until the pressure of the pressure detector 51 is stabilized, i.e., the pressure between the sample chamber 71 and the reference chamber 72 is equalized, and the data of the equalized pressure of the pressure detector 51 at this time is recorded.
And step T5, calculating and obtaining the porosity of the core to be measured through a gas quantitative equation according to the balance pressure data recorded in the step T1, the step T2, the step T3 and the step T4.
In this embodiment, a second pressure detector is arranged in parallel near the pressure detector, and is used to work together with the pressure detector to form a redundant design of the pressure detector, so that the influence on data acquisition accuracy due to the failure of one pressure detector is avoided, and the normal operation of the evaluation experiment is ensured.
Further, as shown in fig. 1, the cleanup additive performance evaluation apparatus of the present embodiment further includes a sand pack model 24 and a vacuum pump 81. The sand filling model 24 and the porous medium model 21 are arranged in parallel, and can be rapidly switched with the porous medium model 21 through a high-pressure quick connector, so that a cleanup additive performance evaluation device with the porous medium model or a cleanup additive performance evaluation device with the sand filling model is formed. The vacuum pump 81 is communicated with the inlet of the sand-packed model 24 through the vacuum drying tank 82, the vacuum buffer tank 83, the seventh valve 47 and the second valve 42 in sequence.
At this time, the adsorption and analysis experiment can be performed on the sample by using the cleanup additive performance evaluation apparatus of this embodiment by providing the sand pack model and the vacuum pump.
The specific process of the methane gas adsorption experiment by adopting the cleanup additive performance evaluation device of the embodiment is as follows:
and step Y1, closing the first valve 41, the third valve 43, the fourth valve 44 and the fifth valve 45, opening the second valve 42 and the seventh valve 47, starting a vacuum pump 81 to perform the in-and-out vacuumizing operation on the cleanup additive performance evaluation device comprising the sand-packed model 24 through a vacuum drying tank 82 and a vacuum buffer tank 83, and closing the second valve 42 and the seventh valve 47 after the vacuumizing operation is completed.
Step Y2, the first valve 41 and the control valve of the reference chamber 72 are opened, the reference chamber 72 is filled with methane gas through the gas source 13, the pressure in the reference chamber 72 is raised to the target pressure according to the pressure detector 51, and the current pressure is recorded as the initial pressure value.
And step Y3, closing the first valve 41, maintaining the pressure for a certain time, and after determining that no gas leaks, opening the second valve 42 to enable methane gas in the reference chamber 72 to enter the sand-packed model 24 for a methane gas adsorption experiment.
And step Y4, in the process of reaching the adsorption equilibrium time, acquiring pressure data in the adsorption process through the pressure detector 51, and calculating the gas adsorption quantity according to a gas adsorption formula. Wherein, the adsorption equilibrium time can be adjusted and determined according to the experimental requirements.
Next, the specific process of performing the methane gas desorption experiment using the cleanup additive performance evaluating apparatus of the present embodiment is as follows:
step Z1, keeping the first valve 41, the second valve 42, the third valve 43, and the fifth valve 45 closed, the fourth valve 44 is opened.
Step Z2, the methane gas in the sand-packed model 24 is subjected to pressure-reduction desorption, and the adsorbed amount of the methane gas is measured by the gas flow meter 33.
Wherein, the sand filling model in this embodiment helps and arranges agent performance evaluation device can select for use high pressure sand filling model to satisfy high-pressure experiment condition requirement, also can select for use visual sand filling model certainly, with the requirement that satisfies visual experiment, improve the effect of experiment.
The foregoing is directed to embodiments of the present invention, and other modifications and variations may be made by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the detailed description above is only for the purpose of better explaining the present invention, and the scope of protection of the present invention should be subject to the scope of protection of the claims.
Claims (10)
1. The cleanup additive performance evaluation device is characterized by comprising an injection unit, a model unit and a metering unit; the injection unit comprises an injection pump, an injection container and a gas source, the model unit comprises a porous medium model, and the metering unit comprises a gas-liquid separator, a balance and a gas flowmeter;
the inlet of the injection pump is communicated with a driving medium, the outlet of the injection pump is communicated with the inlet of the injection container, the outlet of the injection container is selectively communicated with the inlet of the porous medium model, and an injection agent is arranged in the injection container; the outlet of the gas source is selectively communicated with the inlet of the porous medium model; the outlet of the porous medium model is selectively communicated with the gas-liquid separator, the gas-liquid separator is positioned on the balance, and the inlet of the gas flowmeter is communicated with the gas-liquid separator; the outlet of the injection container is provided with a pressure detector which can detect the pressure of the injection agent output by the injection container and the pressure of the gas output by the gas source;
the outlet of the gas source is provided with a first valve, the inlet of the porous medium model is provided with a second valve and a third valve, one end of the second valve is communicated with the first valve and the outlet of the injection container, the other end of the second valve is communicated with the inlet of the porous medium model, one end of the third valve is communicated with the inlet of the porous medium model, and the other end of the third valve is communicated with the inlet of the gas-liquid separator; the outlet of the porous medium model is provided with a fourth valve and a fifth valve, the other end of the fourth valve is communicated with the inlet of the gas-liquid separator, the other end of the fifth valve is communicated with a pipeline between the first valve and the second valve, and the porous medium model is further provided with an exhaust valve.
2. The cleanup additive performance evaluation device according to claim 1, wherein the injection unit includes a plurality of the injection containers, and both ends of each of the injection containers are provided with control valves, respectively; the outlet of the injection pump is communicated with the inlets of the plurality of injection containers in parallel, and the outlets of the plurality of injection containers are communicated with the inlet of the porous medium model in parallel.
3. The cleanup additive performance evaluation device of claim 2, wherein the injection vessel is a dosing injection vessel.
4. The cleanup additive performance evaluation device of claim 1, wherein the injection unit further comprises a gas quantitative injector; the gas quantitative injector is located at an outlet position of the gas source.
5. The cleanup additive performance evaluation device of claim 1, wherein the model unit further comprises a ring pressure loading pump; and the ring pressure loading pump is communicated with the porous medium model and is used for applying ring sealing pressure to the porous medium model.
6. The discharge assistant performance evaluation device according to any one of claims 1 to 5, characterized by further comprising a back-pressure valve and a back-pressure pump; the back-pressure valve is positioned at the inlet position of the gas-liquid separator, and the back-pressure pump is connected with the back-pressure valve.
7. The cleanup additive performance evaluation device of any one of claims 1 through 5, further comprising a sample chamber and a reference chamber; the sample chamber and the reference chamber are positioned at a pipeline between the first valve and the second valve, and the outlet of the sample chamber and the outlet of the reference chamber are respectively provided with a control valve; the pressure detector is capable of detecting a pressure of the sample chamber and a pressure of the reference chamber.
8. The cleanup additive performance evaluation device of any one of claims 1 to 5, further comprising a sand pack model and a vacuum pump; the sand filling model and the porous medium model are arranged in parallel and can be switched with the porous medium model; and the vacuum pump is communicated with the inlet of the sand filling model through the second valve.
9. The cleanup additive performance evaluation device of claim 8, wherein the sand pack model is a high pressure sand pack model or a visual sand pack model.
10. The cleanup additive performance evaluation device of any one of claims 1 to 5, wherein the metering unit includes a plurality of gas flow meters of different ranges, and the plurality of gas flow meters are in communication with the gas-liquid separator in parallel.
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