Carbon dioxide oil displacement mixed-phase experimental device

Abstract

The invention relates to the technical field of miscible phase experiments, in particular to a carbon dioxide oil displacement miscible phase experiment device. The invention provides a carbon dioxide oil displacement mixed-phase experimental device which comprises a bottom frame, a collecting frame, a controller, a gas transmission assembly, a reaction barrel and the like, the collecting frame is fixedly connected to the bottom frame, the controller is fixedly connected to the side face of the bottom frame, a motor is fixedly connected to the interior of the bottom frame, and the controller is electrically connected with the motor; a connecting frame is fixedly connected to an output shaft of the motor through a connecting shaft. During an experiment, the pressure intensity in the reaction barrel can be regulated and controlled through the pumping pump, the pressure gauge and the electromagnetic pressure release valve, the temperature in the reaction barrel is regulated through the heater, and the temperature and the pressure intensity suitable for the mixed phase of carbon dioxide and crude oil are tested by observing the mixed phase condition of the crude oil, so that the carbon dioxide oil displacement mixed phase experiment is realized; and after the experiment is finished, the reaction barrel can be automatically cleaned through the cleaning assembly, so that the experiment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of miscibility experiments, and in particular to a carbon dioxide flooding miscibility experiment device. Background Art

[0002] The carbon dioxide flooding technology is a technology that injects carbon dioxide into the oil reservoir to improve the oil recovery rate of the oilfield. When carbon dioxide first contacts the formation crude oil, miscibility cannot be formed. However, under suitable pressure, temperature, and crude oil component conditions, carbon dioxide can form a miscible front. The supercritical fluid will extract heavier hydrocarbons from the crude oil and continuously concentrate the gas at the displacement front. Thus, carbon dioxide and crude oil become a miscible liquid, forming a single liquid phase, so that the formation crude oil can be effectively displaced into the production well. In order to fully understand at what pressure and temperature carbon dioxide and formation crude oil can form miscibility, multiple experiments need to be carried out.

[0003] Currently, a carbon dioxide flooding miscibility experiment device with the publication number CN210105830U disclosed includes a housing, a carbon dioxide gas tank, an air pump, a gas flow valve, an inlet pipe, an air inlet groove, an oil storage box, an oil inlet valve, a first micro water pump, an oil inlet pipe, a reaction tank, a pressure relief valve, a pressure relief pipe, a temperature sensor, a crude oil pressure sensor, a cold water tank, a second micro water pump, a three-way pipe, a first one-way valve, a water pipe, a semiconductor refrigeration sheet, an electric heating plate, a hot water tank, a second one-way valve, a third micro water pump, a connecting pipe, a single-chip microcomputer, and a timer.

[0004] However, the above patent still has the following deficiencies: When conducting a carbon dioxide flooding miscibility experiment, in order to improve the accuracy and comprehensiveness of the experiment, the experiment needs to be carried out multiple times in various ways. After one experiment, the above patent requires the operator to disassemble and clean the reaction vessel to ensure that the experimental residue does not remain in the reaction vessel. In this way, multiple consecutive experiments cannot be carried out, and the experimental efficiency is difficult to guarantee. Summary of the Invention

[0005] In order to overcome the above-mentioned drawbacks, the present invention provides a carbon dioxide flooding miscibility experiment device.

[0006] The technical implementation solution of the present invention is as follows: A carbon dioxide flooding miscible experiment device, which includes a bottom frame, a collection frame, a controller, a gas transmission component, a reaction barrel, a heater, a motor, a connecting frame, a sealing cover, a lifting component, a rotating shaft and a cleaning component. The bottom frame is fixedly connected with the collection frame, the side surface of the bottom frame is fixedly connected with the controller, the motor is fixedly connected inside the bottom frame, the controller is electrically connected to the motor, the output shaft of the motor is fixedly connected with the connecting frame through a connecting shaft, the connecting frame is in the shape of a cross, and the four sides of the cross are all rotatably connected with the rotating shaft. The other side of each rotating shaft is fixedly connected with a reaction barrel, and a heater is fixedly connected to the side surface of each reaction barrel. The controller is electrically connected to the heater. The lifting component is rotatably connected to the connecting shaft. An air transmission component is arranged inside the bottom frame, and the air transmission component is hermetically connected to one of the reaction barrels through the sealing cover. A cleaning component is arranged at the inner bottom of the bottom frame. The cleaning component includes a water tank, a water inlet pipe, an electric push rod II, an annular brush, a water outlet tray, a nozzle, a hose, a motor, a sewage tank and a water pump. The water tank is fixedly connected inside the bottom frame, the electric push rod II is fixedly connected to the top of the water tank, the water inlet pipe is opened on the side surface of the water tank, the telescopic rod of the electric push rod II is fixedly connected with the water outlet tray, a plurality of nozzles are arranged on the top of the water outlet tray, a motor is fixedly connected inside the water outlet tray, the controller is electrically connected to the motor, the output shaft of the motor is fixedly connected with the annular brush, the water pump is fixedly connected to the bottom of the water outlet tray, the controller is electrically connected to the water pump, the water inlet of the water pump is fixedly connected with the hose, the other end of the hose extends into the inner bottom of the water tank, and the sewage tank is slidably connected to the rear side of the water tank.

[0007] More preferably, a damping substance is coated at the connection between the rotating shaft and the connecting frame.

[0008] More preferably, the top of the water tank is in an inclined shape with the front higher than the rear.

[0009] More preferably, the motor is a waterproof motor.

[0010] More preferably, the gas transmission component includes a gas tank, a conveying pipe, a pumping and sending pump, a gas delivery pipe, a telescopic pipe and a pressure gauge. Two gas tanks are fixedly connected to the inner bottom of the bottom frame, and the gas tanks are both located on the left side of the water tank. A conveying pipe is connected to the gas outlet of the gas tank, and the two gas tanks are communicated through the conveying pipe. A pumping and sending pump is connected to the conveying pipe, a gas delivery pipe is connected to the air outlet pipe of the pumping and sending pump, the gas delivery pipe is connected to the sealing cover through the telescopic pipe, the sealing cover covers the top of one of the reaction barrels, and the sealing cover is in sealed contact with the reaction barrel. A pressure gauge is fixedly installed on the gas delivery pipe.

[0011] More preferably, the lifting assembly includes an electric push rod I, a lifting plate and guide rods. The top of the connecting shaft is rotatably connected to the electric push rod I, and the electric push rod I is electrically connected to the controller. The telescopic rod of the electric push rod I is connected with the lifting plate. The lifting plate is located above the connecting frame. Four through holes are provided on the lifting plate. The four reaction barrels extend out of the top of the lifting plate through the through holes. The lifting plate is fixedly connected to the sealing cover in a sealed manner, and the sealing cover is located directly above one of the through holes. Four guide rods are fixedly connected to the top of the bottom frame, and the four guide rods are slidably connected to the bottom of the lifting plate.

[0012] More preferably, it further includes a support frame, a short rack and a small gear. The top of the bottom frame is fixedly connected with a support frame. The support frame surrounds the outside of the connecting shaft. Two short racks are fixedly connected to the top of the support frame. A small gear is fixedly connected to each rotating shaft. When the small gears rotate around the circumference of the connecting shaft, they intermittently engage with the short racks.

[0013] More preferably, it further includes a connecting pipe, an electromagnetic pressure relief valve, a push rod, a compression spring, a long rack, a large gear, a turntable, a knocking block and a tension spring. The top of the sealing cover is fixedly connected and communicated with the connecting pipe. The top of the connecting pipe is connected with the electromagnetic pressure relief valve. The electromagnetic pressure relief valve is electrically connected to the controller. A push rod is slidably connected inside the connecting pipe. The push rod extends out of the connecting pipe, and the push rod is in sealed contact with the connecting pipe. A compression spring is connected between the push rod and the inside of the connecting pipe. A long rack is slidably connected to the top of the sealing cover. The front end of the long rack is fixedly connected to the push rod. A large gear is rotatably connected to the telescopic rod of the electric push rod I. The large gear is located directly above the lifting plate. The large gear meshes with the long rack. A turntable is also rotatably connected to the telescopic rod of the electric push rod I. The turntable is located between the lifting plate and the large gear. The turntable is fixedly connected to the large gear. A plurality of convex blocks are arranged circumferentially along the edge of the turntable. Four knocking blocks are slidably connected to the top of the lifting plate around the center in a uniform manner. The knocking blocks are all located between the through holes and the turntable, and a tension spring is connected between each knocking block and the lifting plate. When the turntable rotates, the convex blocks on the turntable will squeeze the knocking blocks to move away from the turntable, and the knocking blocks moving away from the turntable will knock on the reaction barrels.

[0014] Compared with the prior art, the present invention has the following advantages: 1. During the experiment of the present invention, the air pressure intensity inside the reaction barrel can be regulated through the pumping and suction pump, the pressure gauge and the electromagnetic pressure relief valve, the temperature inside the reaction barrel can be adjusted through the heater, and by observing the crude oil miscibility situation, the suitable temperature and pressure for the miscibility of carbon dioxide and crude oil can be tested, so as to realize the carbon dioxide flooding miscibility experiment. After the experiment, the reaction barrel can be automatically cleaned by the cleaning assembly, improving the experimental efficiency.

[0015] 2. The present invention can automatically push the sealing cover upwards through the electric push rod I, so that the reaction barrel can be conveniently replaced for experiments, improving the overall experimental coherence and reducing the complexity of manual operation.

[0016] 3. By using the short rack and pinion in cooperation, the present invention can automatically turn the reaction barrel to pour out the crude oil inside the reaction barrel, and cooperate with the cleaning component to clean the inside of the reaction barrel, improving the operation efficiency of the experiment.

[0017] 4. When the reaction barrel is pouring out crude oil, the present invention can knock the reaction barrel through the turntable and the knocking block to improve the efficiency of pouring out the crude oil inside the reaction barrel and avoid the residue of crude oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0019] Figure 2 It is a three-dimensional structure schematic diagram of components such as the gas tank, delivery pipe and pumping pump of the present invention.

[0020] Figure 3 It is a three-dimensional structure schematic diagram of components such as the pumping pump, air supply pipe and telescopic pipe of the present invention.

[0021] Figure 4 It is a three-dimensional structure schematic diagram of components such as the connecting frame, sealing cover and electric push rod I of the present invention.

[0022] Figure 5 It is a three-dimensional structure schematic diagram of components such as the short rack, pinion and rotating shaft of the present invention.

[0023] Figure 6 It is a three-dimensional structure schematic diagram of components such as the connecting pipe, electromagnetic pressure relief valve and push rod of the present invention.

[0024] Figure 7 It is a three-dimensional structure schematic diagram of components such as the push rod, compression spring and long rack of the present invention.

[0025] Figure 8 It is a three-dimensional structure schematic diagram of components such as the long rack, large gear and turntable of the present invention.

[0026] Figure 9 It is a three-dimensional structure schematic diagram of the lifting disc, knocking block and tension spring of the present invention.

[0027] Figure 10 It is a three-dimensional structure schematic diagram of components such as the water tank, water inlet pipe and electric push rod II of the present invention.

[0028] Figure 11 It is a three-dimensional structure schematic diagram of components such as the water inlet pipe, electric push rod II and annular brush of the present invention.

[0029] Figure 12 It is a three-dimensional structure schematic diagram of components such as the electric push rod II, annular brush and water outlet disc of the present invention.

[0030] Figure 13 This is a three-dimensional structural schematic diagram of components such as the nozzle, hose, and motor of the present invention.

[0031] Figure 14 This is a three-dimensional structural schematic diagram of components such as the annular brush, water outlet tray, and sewage discharge tank of the present invention.

[0032] The markings of each component in the attached drawings are as follows: 1, bottom frame; 101, collection frame; 102, controller; 103, gas tank; 104, delivery pipe; 105, pumping pump; 106, air supply pipe; 107, telescopic pipe; 108, pressure gauge; 201, reaction barrel; 202, heater; 203, motor; 204, connecting frame; 205, sealing cover; 206, electric push rod 1; 207, lifting plate; 208, guide rod; 209, connecting shaft; 301, support frame; 302, short rack; 303, pinion; 304, rotating shaft; 401, connecting pipe; 402, electromagnetic pressure relief valve; 403, push rod; 404, compression spring; 405, long rack; 406, large gear; 407, turntable; 408, knocking block; 409, tension spring; 501, water tank; 502, water inlet pipe; 503, electric push rod 2; 504, annular brush; 505, water outlet tray; 506, nozzle; 507, hose; 508, motor; 509, sewage discharge tank; 510, water pump. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment: A carbon dioxide flooding miscible experiment device, as Figures 1-14As shown in the figure, it includes a bottom frame 1, a collection box 101, a controller 102, a gas transmission component, a reaction barrel 201, a heater 202, a motor 203, a connecting frame 204, a sealing cover 205, a lifting component, a rotating shaft 304 and a cleaning component. A collection box 101 is welded and connected to the right side surface of the bottom frame 1. A controller 102 is fixedly connected to the front side surface of the bottom frame 1 by bolts. A motor 203 is fixedly connected to the inner top of the bottom frame 1 by bolts. The controller 102 is electrically connected to the motor 203. A connecting frame 204 is fixedly connected to the output shaft of the motor 203 through a connecting shaft 209. The connecting frame 204 is in the shape of a cross, and a rotating shaft 304 is rotatably connected to each side of the cross. A damping substance is applied to the connection between the rotating shaft 304 and the connecting frame 204, so that the rotating shaft 304 will not rotate randomly on the connecting frame 204. The other side of each rotating shaft 304 is fixedly connected to a reaction barrel 201 by bolts. A heater 202 is fixedly connected to the side surface of each reaction barrel 201 by bolts. The controller 102 is electrically connected to the heater 202. A lifting component is rotatably connected to the connecting shaft 209. A gas transmission component is arranged inside the bottom frame 1. The gas transmission component is hermetically connected to one of the reaction barrels 201 through a sealing cover 205. A cleaning component is arranged at the inner bottom of the bottom frame 1. The cleaning component includes a water tank 501, a water inlet pipe 502, an electric push rod two 503, an annular brush 504, a water outlet tray 505, a spray head 506, a hose 507, a motor 508, a sewage box 509 and a water pump 510. A water tank 501 is fixedly connected to the inner bottom of the bottom frame 1 by bolts. An electric push rod two 503 is fixedly connected to the middle of the top of the water tank 501. A water inlet pipe 502 is opened on the front side surface of the water tank 501, and the water tank 501 can be replenished with cleaning liquid through the water inlet pipe 502. An electric push rod two 503 is fixedly connected to the water outlet tray 505 through a telescopic rod. A plurality of spray heads 506 are arranged on the top of the water outlet tray 505. A motor 508 is fixedly connected to the inside of the water outlet tray 505 by bolts. The controller 102 is electrically connected to the motor 508. An annular brush 504 is fixedly connected to the output shaft of the motor 508. A water pump 510 is fixedly connected to one side of the bottom of the water outlet tray 505 by bolts. The controller 102 is electrically connected to the water pump 510. A hose 507 is fixedly connected to the water inlet of the water pump 510, and the other end of the hose 507 extends into the inner bottom of the water tank 501. A sewage box 509 is slidably connected to the rear side of the water tank 501. The top of the water tank 501 is inclined with the front high and the rear low. The low part of the top of the water tank 501 faces the opening of the top of the sewage box 509, so that the sewage sliding down from the top of the water tank 501 flows into the inside of the sewage box 509.

[0035] As Figures 1-3As shown in the figure, the gas transmission component includes a gas tank 103, a delivery pipe 104, a pumping pump 105, a gas supply pipe 106, a telescopic pipe 107, and a pressure gauge 108. Two gas tanks 103 are fixedly connected to the inner bottom of the bottom frame 1 by bolts. The gas tanks 103 are both located on the left side of the water tank 501. A delivery pipe 104 is connected to the gas outlet of the gas tank 103, and the two gas tanks 103 are connected through the delivery pipe 104. A pumping pump 105 is connected to the delivery pipe 104. The outlet pipe of the pumping pump 105 is connected to a gas supply pipe 106. The gas supply pipe 106 is connected to the sealing cover 205 through a telescopic pipe 107. The sealing cover 205 covers the top of one of the reaction barrels 201, and the sealing cover 205 is in sealed contact with the reaction barrel 201. A pressure gauge 108 is fixedly installed on the gas supply pipe 106.

[0036] As Figure 1 and Figure 4 shown in the figure, the lifting component includes a first electric push rod 206, a lifting plate 207, and a guide rod 208. The top of the connecting shaft 209 is rotatably connected to the first electric push rod 206. The first electric push rod 206 is electrically connected to the controller 102. A lifting plate 207 is threadedly connected to the telescopic rod of the first electric push rod 206. The lifting plate 207 is located above the connecting frame 204. Four through holes are provided on the lifting plate 207. The four reaction barrels 201 extend out of the top of the lifting plate 207 through the through holes. The lifting plate 207 is fixedly connected to the sealing cover 205 in a sealed manner, and the sealing cover 205 is located directly above the rear through hole. Four guide rods 208 are fixedly connected to the top of the bottom frame 1. A sliding connection is established between the four guide rods 208 and the bottom of the lifting plate 207.

[0037] As Figure 5 shown in the figure, it further includes a support frame 301, a short rack 302, and a small gear 303. The support frame 301 is fixedly connected to the top of the bottom frame 1 by bolts. The support frame 301 surrounds the outside of the connecting shaft 209. Two short racks 302 are welded to the top of the support frame 301. A small gear 303 is fixedly connected to each rotating shaft 304. When the small gears 303 rotate around the circumference of the connecting shaft 209, they intermittently engage with the short racks 302.

[0038] As Figures 6-9As shown in the figure, it further includes a connecting pipe 401, an electromagnetic pressure relief valve 402, a push rod 403, a compression spring 404, a long rack 405, a large gear 406, a turntable 407, a knocking block 408 and a tension spring 409. The middle position at the top of the sealing cover 205 is fixedly connected and communicated with the connecting pipe 401. The top of the connecting pipe 401 is connected with the electromagnetic pressure relief valve 402. The electromagnetic pressure relief valve 402 is electrically connected to the controller 102. The push rod 403 is slidably connected inside the connecting pipe 401. The push rod 403 extends out of the connecting pipe 401, and the push rod 403 is in sealed contact with the connecting pipe 401. A compression spring 404 is connected between the push rod 403 and the inside of the connecting pipe 401. The long rack 405 is slidably connected to the right side of the top of the sealing cover 205. The front end of the long rack 405 is welded to the push rod 403. A large gear 406 is rotatably connected to the telescopic rod of the first electric push rod 206. The large gear 406 is directly above the lifting disc 207. The large gear 406 meshes with the long rack 405. A turntable 407 is also rotatably connected to the telescopic rod of the first electric push rod 206. The turntable 407 is located between the lifting disc 207 and the large gear 406. The turntable 407 is fixedly connected to the large gear 406. A plurality of convex blocks are arranged circumferentially along the edge of the turntable 407. Four knocking blocks 408 are slidably connected to the top of the lifting disc 207 evenly around the center. The knocking blocks 408 are all located between the through holes and the turntable 407. And a tension spring 409 is connected between each knocking block 408 and the lifting disc 207. When the turntable 407 rotates, the convex blocks on the turntable 407 will squeeze the knocking blocks 408 to move away from the turntable 407. The knocking blocks 408 moving away from the turntable 407 will knock on the reaction barrel 201.

[0039] When using this experimental device for the carbon dioxide flooding miscibility experiment, the switch of the gas tank 103 can be opened first. Then, the pumping pump 105 pumps out the carbon dioxide inside the gas tank 103 through the delivery pipe 104. And the pumped-out carbon dioxide enters the reaction barrel 201 through the gas delivery pipe 106, the telescopic pipe 107 and the sealing cover 205. The reaction barrel 201 connected to the sealing cover 205 contains crude oil inside. Then, the heater 202 is started through the controller 102. In this way, the carbon dioxide entering the reaction barrel 201 will carry out a miscibility reaction with the crude oil inside the reaction barrel 201. At the same time, the pressure gauge 108 always records the air pressure value inside the gas delivery pipe 106, and transmits the air pressure value to the controller 102 and records it. During the experiment, the air pressure intensity inside the reaction barrel 201 can be regulated through the pumping pump 105, the pressure gauge 108 and the electromagnetic pressure relief valve 402, and the temperature inside the reaction barrel 201 can be adjusted through the heater 202. Observe the miscibility situation of the crude oil, so as to test the suitable temperature and pressure for the miscibility of carbon dioxide and crude oil. In this way, the carbon dioxide flooding miscibility experiment can be carried out through the above operations.

[0040] After the experiment is completed, the electromagnetic pressure relief valve 402 is opened by the controller 102 to discharge the reaction gas inside the reaction barrel 201, and then the electric push rod 206 is controlled by the controller 102 to start, and the telescopic rod of the electric push rod 206 drives the lifting plate 207 and the sealing cover 205 and other components to move upward along the guide rod 208. At this time, the telescopic tube 107 shrinks, and the lifting plate 207 moves upward to drive the sealing cover 205 to break away from the contact with the reaction barrel 201. Then, the motor 203 is started by the controller 102, and the output shaft of the motor 203 drives the connecting frame 204 to rotate 90° clockwise through the connecting shaft 209, and the connecting frame 204 Rotating 90° drives the rotating shaft 304, the pinion 303 and the reaction barrel 201 to rotate 90°, so that when the pinion 303 rotates in a circle, it will mesh with the short rack 302, and the pinion 303 will rotate under the meshing action of the short rack 302, so that the pinion 303 will drive the rotating shaft 304 and the reaction barrel 201 after the experiment to rotate, and after the connecting frame 204 rotates 90°, the reaction barrel 201 after the experiment will also flip 180° and be located above the collection frame 101, so that the crude oil inside the reaction barrel 201 after the experiment can be poured into the collection frame 101, and the collection of the experimental crude oil can be completed conveniently.

[0041] After the crude oil inside the reaction barrel 201 is poured out, the controller 102 continues to control the motor 203 to drive the reaction barrel 201 to rotate 90 degrees in a circle. The reaction barrel 201 that has flipped 180 degrees will rotate to the top of the cleaning component. At this time, the electric push rod 2 503 can be controlled by the controller 102 to start, and the telescopic rod of the electric push rod 2 503 will drive the annular brush 504 and the water outlet tray 505 to move upward. When the annular brush 504 and the water outlet tray 505 move upward, the motor 508 and the water pump 510 can be controlled by the controller 102 to work, so that the motor 508 will drive the annular brush 504 to rotate, thereby cleaning the reaction barrel. 201 is cleaned, and the water pump 510 pumps the cleaning liquid in the water tank 501 to the water outlet tray 505 through the hose 507, and then the cleaning liquid is sprayed to the inside of the reaction barrel 201 through the water outlet tray 505 and the nozzle 506, so as to automate the cleaning work. When the annular brush 504 and the water outlet tray 505 clean the inside of the reaction barrel 201, the cleaning liquid sprayed from the water outlet tray 505 will fall into the top of the water tank 501 with the residual crude oil in the reaction barrel 201, and slide into the sewage tank 509 under the action of the inclined plate on the top of the water tank 501, so as to collect and treat the crude oil and sewage.

[0042] After the inside of the reaction barrel 201 is cleaned with experimental crude oil, the heater 202 can be started through the controller 102. Under the action of the heater 202, the inside of the reaction barrel 201 can be dried. After the reaction barrel 201 is cleaned and dried, the motor 203 can be started through the controller 102. The output shaft of the motor 203 drives the connecting frame 204 to continue rotating clockwise by 90°. In this way, when the connecting frame 204 rotates by 90°, it drives the rotating shaft 304, the small gear 303 and the reaction barrel 201 to rotate circumferentially by 90°. When the small gear 303 rotates circumferentially, it will mesh with another short rack 302. The small gear 303 will rotate self under the meshing action of the other short rack 302. In this way, the small gear 303 will drive the rotating shaft 304 and the reaction barrel 201 to rotate self. After the connecting frame 204 rotates by 90°, the cleaned reaction barrel 201 will be flipped by 180° again. In this way, the reaction barrel 201 can be flipped so that the opening faces up again. Then, the experimental crude oil to be tested is added into the reaction barrel 201. Then, the motor 203 is started to rotate by 90° through the controller 102, so that the reaction barrel 201 filled with crude oil can be rotated to directly below the sealing cover 205. Then, the controller 102 is used to control the start of the electric push rod 1 206. The telescopic rod of the electric push rod 1 206 drives components such as the lifting disc 207 and the sealing cover 205 to move downward along the guide rod 208. At this time, the telescopic pipe 107 extends, and the downward movement of the lifting disc 207 will drive the sealing cover 205 to re-enter into sealing contact with the reaction barrel 201. In this way, the next round of carbon dioxide flooding miscibility experiment can be entered. There are four reaction barrels 201. In this way, when the motor 203 rotates by 90°, a new reaction barrel 201 can be rotated to directly below the sealing cover 205 for the experiment. Repeating the above operations can repeat the experiment. In this way, more specific experimental data can be obtained through multiple experiments, and the accuracy of the experiment can be improved.

[0043] When conducting a carbon dioxide flooding miscible experiment inside the reaction barrel 201, after the miscible reaction is completed inside the reaction barrel 201, the electromagnetic pressure relief valve 402 can be opened through the controller 102. In this way, the reaction gas inside the reaction barrel 201 will be discharged through the connecting pipe 401. Before the reaction gas inside the reaction barrel 201 is discharged, the reaction gas will push the push rod 403 to slide forward. At this time, the compression spring 404 is compressed. When the push rod 403 is pushed forward to the limit, the reaction gas is discharged from the connecting pipe 401. When the reaction gas pushes the push rod 403 to slide forward, the push rod 403 will simultaneously drive the long rack 405 to move forward. The forward movement of the long rack 405 will drive the turntable 407 to rotate through the large gear 406. The rotation of the turntable 407 will push the knocking block 408 to move away from the turntable 407 through the convex block. At this time, the tension spring 409 is stretched, and the knocking block 408 will knock on the adjacent reaction barrel 201 to make the crude oil inside the reaction barrel 201 pour more thoroughly. When the turntable 407 rotates to the point where the convex block no longer pushes the knocking block 408, the knocking block 408 moves towards the turntable 407 under the action of the tension spring 409. In this way, under the continuous rotation of the turntable 407, the knocking block 408 can be continuously pushed by the convex block, so that the knocking block 408 continuously knocks on the reaction barrel 201, improving the pouring efficiency of the crude oil inside the reaction barrel 201.

[0044] It should be understood that the above description is only for illustrative purposes and does not mean to limit the present invention. Those skilled in the art will understand that the variant forms of the present invention will be included within the scope of the claims herein.

Claims

1. A carbon dioxide flooding miscibility experiment device, characterized in that: It includes a bottom frame (1), a collection box (101), a controller (102), an air delivery component, a reaction barrel (201), a heater (202), a motor (203), a connecting frame (204), a sealing cover (205), a lifting component, a rotating shaft (304) and a cleaning component. A collection box (101) is fixedly connected to the bottom frame (1), a controller (102) is fixedly connected to the side surface of the bottom frame (1), a motor (203) is fixedly connected to the inside of the bottom frame (1), the controller (102) is electrically connected to the motor (203), a connecting frame (204) is fixedly connected to the output shaft of the motor (203) through a connecting shaft (209), the connecting frame (204) is in the shape of a cross, and rotating shafts (304) are rotatably connected to the four sides of the cross. The other side of each rotating shaft (304) is fixedly connected to a reaction barrel (201), a heater (202) is fixedly connected to the side surface of each reaction barrel (201), the controller (102) is electrically connected to the heater (202), a lifting component is rotatably connected to the connecting shaft (209), an air delivery component is arranged inside the bottom frame (1), and the air delivery component is hermetically connected to one of the reaction barrels (201) through a sealing cover (205). A cleaning component is arranged at the inner bottom of the bottom frame (1), and the cleaning component includes a water tank (501), a water inlet pipe (502), an electric push rod II (503), an annular brush (504), a water outlet tray (505), a spray head (506), a hose (507), a motor (508), a sewage discharge box (509) and a water pump (510). A water tank (501) is fixedly connected to the inside of the bottom frame (1), an electric push rod II (503) is fixedly connected to the top of the water tank (501), a water inlet pipe (502) is arranged on the side surface of the water tank (501), a water outlet tray (505) is fixedly connected to the telescopic rod of the electric push rod II (503), a plurality of spray heads (506) are arranged on the top of the water outlet tray (505), a motor (508) is fixedly connected to the inside of the water outlet tray (505), the controller (102) is electrically connected to the motor (508), an annular brush (504) is fixedly connected to the output shaft of the motor (508), a water pump (510) is fixedly connected to the bottom of the water outlet tray (505), the controller (102) is electrically connected to the water pump (510), a hose (507) is fixedly connected to the water inlet of the water pump (510), the other end of the hose (507) extends into the inner bottom of the water tank (501), and a sewage discharge box (509) is slidably connected to the rear side of the water tank (501).

2. The carbon dioxide flooding miscibility experiment device according to claim 1, wherein: A damping substance is coated at the connection between the rotating shaft (304) and the connecting frame (204).

3. The carbon dioxide flooding miscibility experiment device according to claim 2, characterized in that: The top of the water tank (501) is inclined with the front higher than the rear.

4. A carbon dioxide flooding miscibility experiment device according to claim 3, characterized in that: The motor (508) is a waterproof motor.

5. A carbon dioxide enhanced oil recovery miscibility experiment device according to claim 4, characterized in that: The gas transmission component includes a gas tank (103), a delivery pipe (104), a pumping pump (105), a gas supply pipe (106), a telescopic pipe (107) and a pressure gauge (108). Two gas tanks (103) are fixedly connected to the inner bottom of the bottom frame (1). The gas tanks (103) are both located on the left side of the water tank (501). A delivery pipe (104) is connected to the gas outlet of the gas tank (103), and the two gas tanks (103) are connected through the delivery pipe (104). A pumping pump (105) is connected to the delivery pipe (104). A gas supply pipe (106) is connected to the outlet pipe of the pumping pump (105). The gas supply pipe (106) is connected to the sealing cover (205) through the telescopic pipe (107). The sealing cover (205) covers the top of one of the reaction barrels (201), and the sealing cover (205) is in sealed contact with the reaction barrel (201). A pressure gauge (108) is fixedly installed on the gas supply pipe (106).

6. The carbon dioxide flooding miscibility experiment device according to claim 5, characterized in that: The lifting component includes a first electric push rod (206), a lifting plate (207) and a guide rod (208). The top of the connecting shaft (209) is rotatably connected to the first electric push rod (206). The first electric push rod (206) is electrically connected to the controller (102). The telescopic rod of the first electric push rod (206) is connected to the lifting plate (207). The lifting plate (207) is located above the connecting frame (204). Four through holes are formed in the lifting plate (207). The four reaction barrels (201) extend out of the top of the lifting plate (207) through the through holes. The lifting plate (207) is fixedly connected to the sealing cover (205) in a sealed manner, and the sealing cover (205) is located directly above one of the through holes. Four guide rods (208) are fixedly connected to the top of the bottom frame (1). The four guide rods (208) are slidably connected to the bottom of the lifting plate (207).

7. The carbon dioxide flooding miscibility experiment device according to claim 6, characterized in that: It further includes a support frame (301), a short rack (302) and a small gear (303). The support frame (301) is fixedly connected to the top of the bottom frame (1). The support frame (301) surrounds the outside of the connecting shaft (209). Two short racks (302) are fixedly connected to the top of the support frame (301). A small gear (303) is fixedly connected to each rotating shaft (304). When the small gears (303) rotate around the circumference of the connecting shaft (209), they intermittently engage with the short racks (302).

8. A carbon dioxide flooding miscibility experiment device according to claim 7, characterized in that: It also includes a connecting pipe (401), an electromagnetic pressure relief valve (402), a push rod (403), a compression spring (404), a long rack (405), a large gear (406), a turntable (407), a knocking block (408) and a tension spring (409). The top of the sealing cover (205) is fixedly connected and communicated with the connecting pipe (401). The top of the connecting pipe (401) is connected with the electromagnetic pressure relief valve (402). The electromagnetic pressure relief valve (402) is electrically connected to the controller (102). A push rod (403) is slidably connected inside the connecting pipe (401). The push rod (403) extends out of the connecting pipe (401), and the push rod (403) is in sealing contact with the connecting pipe (401). A compression spring (404) is connected between the push rod (403) and the inside of the connecting pipe (401). A long rack (405) is slidably connected to the top of the sealing cover (205). The front end of the long rack (405) is fixedly connected to the push rod (403). A large gear (406) is rotatably connected to the telescopic rod of the first electric push rod (206). The large gear (406) is directly above the lifting disc (207). The large gear (406) meshes with the long rack (405). A turntable (407) is also rotatably connected to the telescopic rod of the first electric push rod (206). The turntable (407) is located between the lifting disc (207) and the large gear (406). The turntable (407) is fixedly connected to the large gear (406). A number of protrusions are circumferentially arranged along the edge of the turntable (407). Four knocking blocks (408) are evenly and slidably connected to the top of the lifting disc (207) around the center. The knocking blocks (408) are all located between the through holes and the turntable (407), and a tension spring (409) is connected between each knocking block (408) and the lifting disc (207). When the turntable (407) rotates, the protrusions on the turntable (407) will squeeze the knocking blocks (408) to move away from the turntable (407). The knocking blocks (408) moving away from the turntable (407) will knock on the reaction barrel (201).

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