Tight reservoir cascade extraction and production integrated simulation device and method

Abstract

The invention relates to the technical field of petroleum and natural gas development, is mainly used for tight reservoir stepped extraction and production integrated simulation, and particularly relates to a tight reservoir stepped extraction and production integrated simulation device and method. The invention discloses a tight reservoir cascade extraction and production integrated simulation device, which comprises a centrifugal device, an input system and an output system, wherein a tight reservoir core is arranged in the centrifugal device; the input system and the output system are respectively connected with the centrifugal device; the input system comprises a condensate saturated oil input system, a surfactant input system, a nano bubble emitter and a formation water input system; and the output system comprises a condensate saturated oil collecting system and an oil collecting system. According to the invention, the test can be realized only by using the tight reservoir core at the bottom of the well and the required experimental liquid, and the experimental device has the advantages of low manufacturing cost, small environmental influence and high experimental feasibility. And the experiment-related cost is low, and the feasibility is high.

Description

Technical Field

[0001] This patent relates to the technical field of oil and natural gas development, and is mainly used for integrated simulation of cascade extraction and recovery of tight reservoirs, and in particular to an integrated simulation device and method for cascade extraction and recovery of tight reservoirs. Background Art

[0002] With the depletion of conventional oil and gas resources, the development of unconventional tight reservoir oil and gas has developed rapidly. Due to the low porosity, low permeability and strong heterogeneity of tight reservoirs, it is difficult for oil and gas in the matrix pores to flow under the natural energy state. Therefore, large-scale volume fracturing is used to transform tight reservoirs, forming a complex underground fluid seepage fracture network, accompanied by the retention of a large amount of fracturing fluid in the fractures. How to improve the extraction of tight reservoirs and thus improve the extraction efficiency has become an important problem in the process of tight reservoir oil and gas development.

[0003] So far, the methods used for integrated cascade recovery of tight reservoirs include gas injection and microbial oil recovery. The main principle of gas injection is to inject gas, such as carbon dioxide, nitrogen, etc., into the reservoir to improve the recovery rate through gas drive. The injection of gas can change the pressure distribution in the reservoir, reduce the viscosity of crude oil, and thus promote the flow and output of crude oil. The main principle of microbial oil recovery is to use specific microorganisms and their metabolites to improve the physical properties of the reservoir and increase the fluidity of crude oil. Microorganisms can decompose heavy components in crude oil and produce substances that are beneficial to improving the recovery rate. However, both gas injection and microbial oil recovery technology may damage tight reservoirs and reduce permeability, and microbial oil recovery technology requires a lot of cost to screen and cultivate efficient strains, which may be very expensive in some cases. Therefore, it is urgent to form a set of economical and practical simulation devices and methods for integrated cascade recovery of tight reservoirs. Summary of the invention

[0004] A technical problem to be solved by the present invention is to provide an integrated simulation device and method for cascade recovery of tight reservoirs. The device can test the recovery rate of tight reservoirs under the centrifugal action of surfactants, nanobubbles and formation water, and then know the recovery rate at what content and what rotation speed is the highest, so as to improve the efficiency of tight reservoir oil displacement.

[0005] The technical solution of the present invention is: 1. An integrated simulation device for cascade extraction of tight reservoirs A tight reservoir cascade extraction integrated simulation device comprises a centrifugal device with a built-in tight reservoir core and an input system and an output system respectively connected to the centrifugal device; the input system comprises a condensate saturated oil input system, a surfactant input system, a nano bubble emitter and a formation water input system; the output system comprises a condensate saturated oil collection system and an oil collection system.

[0006] The centrifugal device includes a centrifugal shell and a conical cover located in the centrifugal shell. The dense reservoir core is located in the conical cover through a core clamp. A main shaft for driving the conical cover to rotate is also provided in the conical cover. The main shaft is connected to a power device. The power device includes a brake motor and a motor connected in sequence. The brake motor is connected to the main shaft. The input system and the output system both extend into the conical cover.

[0007] The centrifugal device has a conical cover at the bottom for placing the dense reservoir core; it also includes a motor, a brake and a main shaft connected in sequence; the end of the main shaft extends into the conical cover and does not contact the dense reservoir core.

[0008] The nano bubble emitter comprises an emitter shell; the emitter shell is provided with a device water inlet, a device air inlet and a bubble emission port; the emitter shell is provided with a water inlet storage tank, a millimeter bubble generator, a millimeter bubble generator output pipe B, a booster water pump, a millimeter bubble generator output pipe A, a buffer tank B, a buffer tank A, a nano bubble generator input pipe and an emitter in sequence; the millimeter bubble generator is provided with a millimeter bubble generator air inlet, and the emitter is connected to the bubble emission port; the water inlet storage tank is connected to a formation water input system through the water inlet.

[0009] The transmitter housing is also provided with an electronic window, the nano bubble generator input pipe is provided with a flow meter, the millimeter bubble generator is provided with an electronic valve, and the booster water pump, the flow meter and the electronic valve are all electrically connected to the electronic window.

[0010] The condensate saturated oil input system includes a condensate saturated oil tank, which is connected to the centrifugal device through a condensate saturated oil input pipeline; the condensate saturated oil tank electronic valve and the condensate saturated oil tank electronic flowmeter are provided on the condensate saturated oil input pipeline; The surfactant input system comprises a surfactant tank, which is connected to the centrifugal device through a surfactant input pipeline; the surfactant input pipeline is provided with a surfactant electronic flowmeter and a surfactant electronic valve; The formation water input system comprises a formation water storage tank, which is connected to the centrifugal device through a formation water storage tank input pipeline, and the formation water storage tank is provided with a formation water storage tank electronic valve and a formation water storage tank electronic flow meter; The nano bubble emitter is connected to the conical cover through a nano bubble input pipeline, and the nano bubble input pipeline is provided with a nano bubble emitter electronic valve and a nano bubble emitter electronic flow meter; The condensate saturated oil collection system includes a condensate saturated oil collection tank, which is connected to the condensate saturated oil outlet of the centrifugal device through a condensate saturated oil output pipe, and the condensate saturated oil output pipe is provided with an electronic flow meter for the condensate saturated oil collection tank and an electronic valve for the condensate saturated oil collection tank; The oil collection system includes an oil collection tank, which is connected to the oil collection outlet of the centrifugal device through an oil collection output pipe. The oil collection output pipe is provided with an oil collection tank electronic flow meter and an oil collection outlet electronic valve.

[0011] It also includes a data transmission system; the data transmission system includes a computer; the surfactant electronic flowmeter, nano bubble emitter electronic flowmeter, collection oil tank electronic flowmeter, condensate saturated oil collection tank electronic flowmeter, formation water reservoir tank electronic flowmeter and condensate saturated oil tank electronic flowmeter are all electrically connected to the computer.

[0012] It also includes tee A, tee B, tee C and tee D; the surfactant electronic flowmeter is connected to tee A through a surfactant electronic flowmeter data output line, the nano bubble emitter electronic flowmeter is connected to tee A through a nano bubble emitter electronic flowmeter data output line, the collection tank electronic flowmeter is connected to tee B through a collection tank flowmeter data transmission line, one end of tee B is connected to tee A through a tee A data transmission line, and one end is connected to a computer through a tee B data transmission line; The electronic flowmeter of the formation water storage tank is connected to the tee D through the data transmission line of the electronic flowmeter of the formation water storage tank, the electronic flowmeter of the condensate saturated oil tank is connected to the tee D through the data transmission line of the electronic flowmeter of the condensate saturated oil tank, the electronic flowmeter of the condensate saturated oil collecting tank is connected to the tee C through the data transmission line of the electronic flowmeter of the condensate saturated oil collecting tank, one end of the tee C is connected to the tee D through the data transmission line of the tee D, and the other end is connected to the computer through the data transmission line of the tee C.

[0013] 2. An integrated simulation method for cascaded recovery of tight reservoirs Disconnect the output system from the centrifugal device and place the tight reservoir core in the centrifugal device; Inject condensate saturated oil into the centrifugal device through the condensate saturated oil input system and soak it, and measure the injected condensate saturated oil; after the soaking is completed, open the connection between the output system and the centrifugal device, output the condensate saturated oil to flow out to the condensate saturated oil collection system, and measure the output condensate saturated oil; calculate the difference between the injected condensate saturated oil and the output condensate saturated oil; Surfactant, nanobubbles and formation water are injected into the centrifugal device through the surfactant input system, nanobubble emitter and formation water input system for extraction. After the centrifugal device is centrifuged, the collected oil is output to the oil collection system; Measuring the injection amount of surfactant, nanobubble and formation water, and collecting the output of oil.

[0014] The technical effects of the present invention are: (1) The present invention only requires the compact reservoir core at the bottom of the well and the required experimental liquid to achieve the test. The experimental device itself is low in cost and less affected by the environment, and the feasibility of the experiment is high. The cost related to the experiment is low and the feasibility is high; (2) The present invention has low requirements for cores. The thickness of the dense reservoir core required for testing is relatively low, which is convenient for processing. For precious bottom hole cores, a relatively small amount of material can meet the testing requirements; (3) The present invention can realize full-process automated testing. Since each solution outflow pipeline is equipped with an electronic valve and connected to a computer, full-process automated testing can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of an integrated simulation device for cascade extraction of tight reservoirs.

[0016] Figure 2 Schematic diagram of the structure of the nanobubble emitter.

[0017] Figure numerals: 1, condensate saturated oil tank; 2, condensate saturated oil tank electronic valve; 3, condensate saturated oil tank electronic flowmeter; 4, condensate saturated oil input pipeline; 5, centrifugal device; 6, motor; 7, brake; 8, surfactant input pipeline; 9, surfactant electronic flowmeter; 10, surfactant electronic valve; 11, surfactant tank; 12, surfactant electronic flowmeter data output line; 13, tee A; 14, main shaft; 15, nanobubble emitter electronic flowmeter data output line; 16, nanobubble emitter; 17, nanobubble emitter electronic valve; 18, nanobubble input pipeline; 19, nanobubble emitter electronic flowmeter; 20, cone cover; 21, tee A data transmission line; 22, tee B; 23, collection tank flowmeter data transmission line; 24, collection tank; 25, collection Electronic flow meter for oil collecting tank; 26. Oil collecting output pipe; 27. Electronic valve for oil collecting outlet; 28. Oil collecting outlet; 29. ​​Tee B data transmission line; 30. Computer; 31. Tight reservoir core; 32. Cone cover; 33. Condensate saturated oil outlet; 34. Tee C data transmission line; 35. Condensate saturated oil collecting tank; 36. Electronic flow meter for condensate saturated oil collecting tank; 37. Tee C; 38. Tee D data transmission line; 39. Condensate saturated oil output pipe; 40. Formation water reservoir tank; 41. Electronic valve for formation water reservoir tank; 42. Electronic flow meter for formation water reservoir tank; 43. Tee D; 44. Electronic flow meter data transmission line for formation water reservoir tank; 45. Formation water reservoir tank input pipeline; 46. Electronic valve for condensate saturated oil collecting tank; 47. Electronic flow meter data transmission line for condensate saturated oil collecting tank; 48. Equipment air inlet; 49. Equipment water inlet; 50. Nano bubble generator input pipe; 51. Flow meter; 52. Emitter housing; 53. Buffer tank A; 54. Electronic window; 55. Buffer tank B; 56. Millimeter bubble generator output pipe A; 57. Booster water pump; 58. Millimeter bubble generator output pipe B; 59. Electronic valve; 60. Millimeter bubble generator air inlet; 61. Millimeter bubble generator; 62. Water inlet storage tank; 63. Emitter; 64. Bubble emission port. DETAILED DESCRIPTION

[0018] Example 1 A tight reservoir cascade extraction integrated simulation device includes a centrifugal device 5 with a built-in tight reservoir core 31 and an input system and an output system respectively connected to the centrifugal device 5; the input system includes a condensate saturated oil input system, a surfactant input system, a nano bubble emitter 16 and a formation water input system; the output system includes a condensate saturated oil collection system and an oil collection system.

[0019] The specific implementation process of this embodiment is as follows: Disconnect the output system from the centrifugal device 5 and place the dense reservoir core 31 in the centrifugal device 5; Inject condensate saturated oil into the centrifugal device 5 through the condensate saturated oil input system and soak it, and measure the injected condensate saturated oil; after soaking, open the connection between the output system and the centrifugal device 5, output the condensate saturated oil to flow out to the condensate saturated oil collection system, and measure the output condensate saturated oil; calculate the difference between the injected condensate saturated oil and the output condensate saturated oil; Surfactant, nanobubbles and formation water are injected into the centrifugal device 5 through the surfactant input system, the nanobubble emitter 16 and the formation water input system for extraction. After the centrifugal device 5 is centrifuged, the collected oil is output to the oil collection system; Measuring the injection amount of surfactant, nanobubble and formation water, and collecting the output of oil.

[0020] Example 2 On the basis of embodiment 1, it also includes: The centrifugal device 5 includes a centrifugal housing and a conical cover 32 located in the centrifugal housing. The dense reservoir core 31 is located in the conical cover 32 through a core holder. A main shaft 14 for driving the conical cover 32 to rotate is also provided in the conical cover 32. The main shaft 14 is connected to a power device, which includes a brake machine 7 and a motor 6 connected in sequence. The brake machine 7 is connected to the main shaft 14. The input system and the output system both extend into the conical cover 32. The centrifugal device 5 has a conical cover 32 at the bottom for placing the dense reservoir core 31; it also includes a motor 6, a brake 7 and a main shaft 14 connected in sequence; the end of the main shaft 14 extends into the conical cover 32 and does not contact the dense reservoir core 31. The motor 6 drives the brake 7 to operate, and the brake 7 drives the main shaft 14 to rotate at a high speed to generate centrifugal force on the dense reservoir core 31, and the conical cover protects the core and the solution to be fully combined under the action of centrifugation.

[0021] Example 3 On the basis of Example 2, it also includes: The nano bubble emitter 16 includes an emitter housing 52; the emitter housing 52 is provided with a device water inlet 49, a device air inlet 48 and a bubble emission port 64; the emitter housing 52 is provided with a water inlet storage tank 62, a millimeter bubble generator 61, a millimeter bubble generator output pipe B58, a booster water pump 57, a millimeter bubble generator output pipe A56, a buffer tank B55, a buffer tank A53, a nano bubble generator input pipe 50 and an emitter 63 in sequence; the millimeter bubble generator 61 is provided with a millimeter bubble generator air inlet 60, and the emitter 63 is connected to the bubble emission port 64; the water inlet storage tank 62 is connected to the formation water input system through the water inlet; The transmitter housing 52 is also provided with an electronic window 54, the nano bubble generator input pipe 50 is provided with a flow meter 51, the millimeter bubble generator 61 is provided with an electronic valve 59, and the booster pump 57, the flow meter 51 and the electronic valve 59 are all electrically connected to the electronic window 54. The purpose is to adjust and observe the nano bubble flow and pressure and control the switch of the electronic valve 59.

[0022] Part of the gas entering the equipment air inlet 48 is used for heat dissipation, and part of the gas enters the millimeter bubble generator air inlet 60. Water and air produce millimeter bubbles under the action of the millimeter bubble generator 61. The millimeter bubbles enter the booster water pump 57 through the millimeter bubble generator output pipe B58. After the booster water pump 57 is pressurized, it enters the buffer tank B55 through the millimeter bubble generator output pipe A56 and further enters the buffer tank A53. After the buffer tank A53 performs buffering and pressure balance, it enters the emitter 63 through the nano bubble generator input pipe 50. The nano bubbles generated by the emitter 63 are sent out of the nano bubble emitter 16 through the bubble emission port 64 and finally enter the centrifugal device 5.

[0023] Example 4 On the basis of Example 3, it also includes: The condensate saturated oil input system comprises a condensate saturated oil tank 1, which is connected to a centrifugal device 5 via a condensate saturated oil input pipeline 4; the condensate saturated oil tank electronic valve 2 and the condensate saturated oil tank electronic flowmeter 3 are provided on the condensate saturated oil input pipeline 4; The surfactant input system comprises a surfactant tank 11, which is connected to the centrifugal device 5 via a surfactant input pipeline 8; the surfactant input pipeline 8 is provided with a surfactant electronic flowmeter 9 and a surfactant electronic valve 10; The formation water input system includes a formation water storage tank 40, which is connected to the centrifugal device 5 through a formation water storage tank input pipeline 45, and the formation water storage tank 40 is provided with a formation water storage tank electronic valve 41 and a formation water storage tank electronic flow meter 42; The nano bubble emitter 16 is connected to the conical cover 32 through a nano bubble input pipe 18, and the nano bubble input pipe 18 is provided with a nano bubble emitter electronic valve 17 and a nano bubble emitter electronic flow meter 19; The condensate saturated oil collection system includes a condensate saturated oil collection tank 35, which is connected to the condensate saturated oil flow outlet 33 of the centrifugal device 5 through a condensate saturated oil output pipe 39, and the condensate saturated oil collection tank electronic flow meter 36 and the condensate saturated oil collection tank electronic valve 46 are provided on the condensate saturated oil output pipe 39; The oil collection system includes an oil collection tank 24, which is connected to the oil collection outlet 28 of the centrifugal device 5 through an oil collection output pipe 26. The oil collection output pipe 26 is provided with an oil collection tank electronic flow meter 51 and an oil collection outlet electronic valve 27.

[0024] Example 5 On the basis of Example 4, it also includes: It also includes a data transmission system; the data transmission system includes a computer 30; the surfactant electronic flowmeter 9, the nano bubble emitter electronic flowmeter 19, the collection oil tank electronic flowmeter 51, the condensate saturated oil collection tank electronic flowmeter 36, the formation water storage tank electronic flowmeter 42 and the condensate saturated oil tank electronic flowmeter 3 are all electrically connected to the computer 30.

[0025] It also includes a tee A13, a tee B22, a tee C37 and a tee D43; the surfactant electronic flowmeter 9 is connected to the tee A13 through the surfactant electronic flowmeter data output line 12, the nano bubble emitter electronic flowmeter 19 is connected to the tee A13 through the nano bubble emitter electronic flowmeter data output line 15, the collection tank electronic flowmeter 51 is connected to the tee B22 through the collection tank flowmeter data transmission line 23, and the tee B22 is also connected to the tee A13 at one end through the tee A data transmission line 21, and connected to the computer 30 at one end through the tee B data transmission line 29; The electronic flowmeter 42 of the formation water storage tank is connected to the tee D43 through the formation water storage tank electronic flowmeter data transmission line 44, the electronic flowmeter 3 of the condensate saturated oil tank is connected to the tee D43 through the data transmission line of the electronic flowmeter 3 of the condensate saturated oil tank, and the electronic flowmeter 36 of the condensate saturated oil collection tank is connected to the tee C37 through the data transmission line 47 of the electronic flowmeter of the condensate saturated oil collection tank. One end of the tee C37 is connected to the tee D43 through the tee D data transmission line 38, and the other end is connected to the computer 30 through the tee C data transmission line 34.

[0026] The specific implementation process of this embodiment is as follows: Close the electronic valve 46 of the condensate saturated oil collection tank and the electronic valve 27 of the oil collection outlet, and place the tight reservoir core 31 in the conical cover 32; Open the electronic valve 2 of the condensate saturated oil tank, inject the condensate saturated oil into the conical cover 32 containing the dense reservoir core 31 through the condensate saturated oil input pipeline 4 and the centrifugal device 5 in sequence, when the condensate saturated oil submerges the dense reservoir core 31, open the centrifugal device 5, and let the dense reservoir core 31 be immersed under the centrifugal action. After immersion for a period of time, open the electronic valve 46 of the condensate saturated oil collection tank to flow out and output the condensate saturated oil.

[0027] The flow rate of the injected condensate saturated oil flowing into the centrifugal device 5 can be measured by the condensate saturated oil tank electronic flowmeter 3, and its data can be read out from the computer 30; the flow rate of the output condensate saturated oil flowing out of the centrifugal device 5 can be measured by the condensate saturated oil collection tank electronic flowmeter 36, and its value can be read out from the computer 30. The difference between the injected condensate saturated oil and the output condensate saturated oil is the condensate saturated oil entering the tight reservoir core 31.

[0028] The electronic valve 46 of the condensate saturated oil collection tank and the electronic valve 27 of the oil collection outlet are closed, and the electronic valve 41 of the formation water reservoir tank, the electronic valve 10 of the surfactant and the electronic valve 17 of the nanobubble emitter are opened; the formation water flows out of the formation water reservoir tank 40 and enters the tight reservoir core 31 through the formation water reservoir tank input pipe 45; the surfactant flows out of the surfactant tank 11 and enters the tight reservoir core 31 through the surfactant input pipe 8; the nanobubble emitter 16 generates nanobubbles, which enter the tight reservoir core 31 through the nanobubble input pipe 18, and the formation water, the surfactant and the nanobubbles enter the tight reservoir core 31 at the same time, and the centrifugal device 5 is opened at the same time to allow them to be centrifuged for a period of time; then the electronic valve 27 of the oil collection outlet is opened, and the collected oil generated by the centrifugation flows into the oil collection tank 24 through the collected oil output pipe 26.

[0029] The flow rates of formation water, surfactant and nanobubble flowing into the centrifugal device 5 are measured by the formation water reservoir tank electronic flow meter 42, the surfactant electronic flow meter 9 and the nanobubble emitter electronic flow meter 19 respectively, and the flow rate of collected oil is measured by the collection oil tank electronic flow meter 51, and the measured values ​​are analyzed on the computer 30.

Claims

1. An integrated simulation device for cascade extraction of tight reservoirs, characterized in that: It includes a centrifugal device with a built-in dense reservoir core and an input system and an output system respectively connected to the centrifugal device; the input system includes a condensate saturated oil input system, a surfactant input system, a nano bubble emitter and a formation water input system; the output system includes a condensate saturated oil collection system and an oil collection system.

2. The integrated simulation device for cascade extraction of tight reservoirs according to claim 1 is characterized in that: The centrifugal device includes a centrifugal shell and a conical cover located in the centrifugal shell. The dense reservoir core is located in the conical cover through a core clamp. A main shaft for driving the conical cover to rotate is also provided in the conical cover. The main shaft is connected to a power device. The power device includes a brake motor and a motor connected in sequence. The brake motor is connected to the main shaft. The input system and the output system both extend into the conical cover.

3. The integrated simulation device for cascade extraction of tight reservoirs according to claim 2 is characterized in that: The centrifugal device has a conical cover at the bottom for placing the dense reservoir core; it also includes a motor, a brake and a main shaft connected in sequence; the end of the main shaft extends into the conical cover and does not contact the dense reservoir core.

4. The integrated simulation device for cascade extraction of tight reservoirs according to claim 1 is characterized in that: The nano bubble emitter comprises an emitter shell; the emitter shell is provided with a device water inlet, a device air inlet and a bubble emission port; the emitter shell is provided with a water inlet storage tank, a millimeter bubble generator, a millimeter bubble generator output pipe B, a booster water pump, a millimeter bubble generator output pipe A, a buffer tank B, a buffer tank A, a nano bubble generator input pipe and an emitter in sequence; the millimeter bubble generator is provided with a millimeter bubble generator air inlet, and the emitter is connected to the bubble emission port; the water inlet storage tank is connected to a formation water input system through the water inlet.

5. The integrated simulation device for cascade extraction of tight reservoirs according to claim 4 is characterized in that: The transmitter housing is also provided with an electronic window, the nano bubble generator input pipe is provided with a flow meter, the millimeter bubble generator is provided with an electronic valve, and the booster water pump, the flow meter and the electronic valve are all electrically connected to the electronic window.

6. The integrated simulation device for cascade extraction of tight reservoirs according to claim 5 is characterized in that: The condensate saturated oil input system includes a condensate saturated oil tank, which is connected to the centrifugal device through a condensate saturated oil input pipeline; the condensate saturated oil tank electronic valve and the condensate saturated oil tank electronic flowmeter are provided on the condensate saturated oil input pipeline; The surfactant input system comprises a surfactant tank, which is connected to the centrifugal device through a surfactant input pipeline; the surfactant input pipeline is provided with a surfactant electronic flowmeter and a surfactant electronic valve; The formation water input system comprises a formation water storage tank, which is connected to the centrifugal device through a formation water storage tank input pipeline, and the formation water storage tank is provided with a formation water storage tank electronic valve and a formation water storage tank electronic flow meter; The nano bubble emitter is connected to the conical cover through a nano bubble input pipeline, and the nano bubble input pipeline is provided with a nano bubble emitter electronic valve and a nano bubble emitter electronic flow meter; The condensate saturated oil collection system includes a condensate saturated oil collection tank, which is connected to the condensate saturated oil outlet of the centrifugal device through a condensate saturated oil output pipe, and the condensate saturated oil output pipe is provided with a condensate saturated oil collection tank electronic flow meter 47 and a condensate saturated oil collection tank electronic valve; The oil collection system includes an oil collection tank, which is connected to the oil collection outlet of the centrifugal device through an oil collection output pipe. The oil collection output pipe is provided with an oil collection tank electronic flow meter and an oil collection outlet electronic valve.

7. The integrated simulation device for cascade extraction of tight reservoirs according to claim 6 is characterized in that: It also includes a data transmission system; the data transmission system includes a computer; the surfactant electronic flowmeter, nano bubble emitter electronic flowmeter, collection oil tank electronic flowmeter, condensate saturated oil collection tank electronic flowmeter 47, formation water reservoir tank electronic flowmeter and condensate saturated oil tank electronic flowmeter are all electrically connected to the computer.

8. The integrated simulation device for cascade extraction of tight reservoirs according to claim 7 is characterized in that: It also includes tee A, tee B, tee C and tee D; the surfactant electronic flowmeter is connected to tee A through a surfactant electronic flowmeter data output line, the nano bubble emitter electronic flowmeter is connected to tee A through a nano bubble emitter electronic flowmeter data output line, the collection tank electronic flowmeter is connected to tee B through a collection tank flowmeter data transmission line, one end of tee B is connected to tee A through a tee A data transmission line, and one end is connected to a computer through a tee B data transmission line; The electronic flowmeter of the formation water storage tank is connected to the tee D through the data transmission line of the electronic flowmeter of the formation water storage tank, the electronic flowmeter of the condensate saturated oil tank is connected to the tee D through the data transmission line of the electronic flowmeter of the condensate saturated oil tank, the electronic flowmeter of the condensate saturated oil collecting tank 47 is connected to the tee C through the data transmission line 47 of the electronic flowmeter of the condensate saturated oil collecting tank, one end of the tee C is connected to the tee D through the data transmission line of the tee D, and the other end is connected to the computer through the data transmission line of the tee C.

9. An integrated simulation method for cascade extraction of tight reservoirs, characterized in that: Using the integrated simulation device for cascade extraction of tight reservoirs as described in claim 1 above, the method is as follows: Disconnect the output system from the centrifugal device and place the tight reservoir core in the centrifugal device; Inject condensate saturated oil into the centrifugal device through the condensate saturated oil input system and soak it, and measure the injected condensate saturated oil; after the soaking is completed, open the connection between the output system and the centrifugal device, output the condensate saturated oil to flow out to the condensate saturated oil collection system, and measure the output condensate saturated oil; calculate the difference between the injected condensate saturated oil and the output condensate saturated oil; Surfactant, nanobubbles and formation water are injected into the centrifugal device through the surfactant input system, nanobubble emitter and formation water input system for extraction. After the centrifugal device is centrifuged, the collected oil is output to the oil collection system; Measuring the injection amount of surfactant, nanobubble and formation water, and collecting the output of oil.

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