CN217180509U - Combined core displacement experimental device for representing reservoir interference degree - Google Patents

Abstract

The utility model discloses a combined rock core displacement experimental device for representing reservoir interference degree, which comprises a constant-pressure constant-speed pump, a first six-way valve, a simulated formation water storage tank, a simulated formation oil storage tank, a second six-way valve, a first rock core gripper group, a third six-way valve, a second rock core gripper group and a confining pressure pump; the first core holder group and the second core holder group are both arranged in parallel to form a plurality of groups; the first six-way valve is respectively connected with the simulated formation water storage tank and the simulated formation oil storage tank; the input of the second six-way valve is respectively connected with the simulated formation water storage tank and the simulated formation oil storage tank, and the output of the second six-way valve is respectively connected with the first rock core clamping groups in a one-to-one correspondence manner; the third six-way valve is connected between the first core holder group and the second core holder group; the confining pressure pump subsections are correspondingly connected with the first core holder group and the second core holder group one by one; and the output of the second core holder group is connected with the simulated formation water storage tank or the simulated formation oil storage tank.

Description

A combined core-flooding experimental device to characterize the degree of reservoir disturbance

technical field

The utility model relates to the technical field of core displacement experiments, in particular to a combined core displacement experiment device for characterizing the degree of reservoir disturbance.

Background technique

The core displacement device is a physical performance testing instrument used in the field of energy science and technology. Its main functions are liquid permeability measurement, formation sensitivity (formation damage) evaluation, oil production chemical evaluation, seepage characteristics research, and enhanced oil recovery research. .

For example, the Chinese utility model patent with the patent application number of "201820960493.7" and the title of "a core displacement experimental device" includes a core holder, and the two ends of the core holder are respectively connected with a first valve through a pipeline. and the second valve, one end of the first valve is connected with a discharging card seat through a pipeline, one end of the discharging card seat is movably connected with a receiving card seat, and one end of the receiving card seat is connected with the main pipeline, A pressure device, a pressurizing device and a pressure gauge are communicated with one end of the main pipeline away from the material receiving card base, and a semi-permeable baffle is communicated with the output pipe of the buffer container.

Another example is the Chinese utility model patent with the patent application number of "202020849970.X" and the title of "A Core Flooding Experimental Device", which includes an injection system, a model system, and a measurement system. The injection system is used to inject fluid into the model system. Inside, the model system includes a long core system composed of multiple core holders connected in series, and the outlet of each core holder is connected with a back pressure system; the measurement system includes a flow measurement system connected to the outlet of the back pressure system.

Another example is the Chinese utility model patent with the patent application number "201920716663.1" and the title of "a multifunctional core-flooding experimental device", which includes: a filtering system, a heating device, a core holder, and a collecting device; the filtering system includes filtering The heating device includes a heating element and a stirring device, and the wall thickness of the heater box is large, which has a good thermal insulation effect; the core holder is connected to the water outlet of the heating device, and the inside of the core holder is There are core rubber sleeves and rubber sleeve end plugs, which tightly surround the core. The pressure sensor is connected to the core holder through threads. There is a hydraulic port on one side of the core holder that is connected to the confining pressure pump; the collection device includes a condenser pipe and Collection container.

However, the traditional parallel core displacement device for simulating multi-layer commingled mining has the following shortcomings:

First, there is generally only one experimental core in each parallel branch, which cannot effectively simulate the lateral heterogeneity of porosity and permeability of each oil layer in the actual reservoir;

Second, the experimental cores on each parallel branch are independent of each other, which cannot effectively simulate the interference and channeling activities of fluids in the actual reservoir between oil layers with different porosity and permeability during multi-layer commingled production.

Therefore, there is an urgent need to propose a combined core-flooding experimental device with simple structure, reliable test and strong anti-interference ability to characterize the degree of reservoir disturbance.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a combined core-flooding experimental device that characterizes the degree of reservoir disturbance. The technical scheme adopted by the utility model is as follows:

A combined core-flooding experimental device for characterizing the degree of reservoir disturbance, comprising a constant pressure and constant speed pump, a first six-port valve, a simulated formation water storage tank, a simulated formation oil storage tank, a second six-port valve, a first core A holder group, a third six-way valve, a second core holder group and a confining pressure pump; the first core holder group is arranged in parallel with an array; the second core holder group is arranged in parallel with an array; The first six-way valve is respectively connected with the simulated formation water storage tank and the simulated formation oil storage tank, receives the pressure of the constant pressure and constant speed pump and provides the simulated formation pressure; the input of the second six-way valve is respectively connected with the simulated formation water The storage tank is connected with the simulated formation oil storage tank, and the outputs are respectively connected with the first core holder group in a one-to-one correspondence for providing simulated formation water and/or simulated formation oil; the third six-way valve is connected to the first between the core holder group and the second core holder group; the confining pressure pump subsection is connected with the first core holder group and the second core holder group in a one-to-one correspondence; the second core holder The output of the holder group is connected to a simulated formation water storage tank or a simulated formation oil storage tank.

Further, the first core holder group includes a fifth valve, a first core holder and a sixth valve connected in sequence; the fifth valve is connected with the second six-way valve; the sixth valve is connected with The third six-way valve is connected.

Further, the second core holder group includes a seventh valve, a second core holder and a first back pressure valve connected in sequence; the seventh valve is connected with the third six-way valve, and the first The back pressure valve is connected to a simulated formation water storage tank or a simulated formation oil storage tank.

Preferably, a fourth six-way valve is provided between the first core holder group and the confining pressure pump.

Further, it also includes an eighth valve connected between the fourth six-way valve and the first core holder group.

Preferably, a fifth six-way valve is provided between the second core holder group and the confining pressure pump.

Further, a ninth valve is arranged between the fifth six-way valve and the second core holder group.

Further, the combined core-flooding experimental device for characterizing the degree of reservoir disturbance also includes a first valve disposed between the first six-port valve and the simulated formation water storage tank, and disposed between the first six-port valve and the simulated formation. The second valve between the oil storage tanks is arranged between the outlet of the simulated formation water storage tank and the outlet of the simulated formation oil storage tank. The third valve is arranged between the outlet of the simulated formation oil storage tank and the second six-way valve. between the fourth valve.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The utility model cleverly sets two core holders on each parallel branch, and uses a six-way valve to connect to form a combined core (a group of combined cores corresponds to one parallel branch). By switching the valve of the corresponding holder , which can realize the single-production simulation of each oil layer in the reservoir and the multi-layer commingled production simulation of the whole reservoir; at the same time, it can more realistically simulate the lateral non-uniformity of the porosity and permeability of each oil layer in the actual reservoir. homogeneity;

(2) The utility model connects the cores of each combination through the six-way valve, which can more realistically simulate the influence of the pressure interference and fluid exchange between the oil layers on the oil reservoir recovery rate during the multi-layer commingled production of the actual oil reservoir, and further can More accurately evaluate the interlayer channeling during multi-layer commingled production and the interference degree of different heterogeneous combinations on the reservoir;

To sum up, the utility model has the advantages of simple structure, reliable test, strong anti-interference ability, etc., and has high practical value and popularization value in the field of core displacement experiment technology.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, therefore It should not be regarded as a limitation on the scope of protection. For those skilled in the art, other related drawings can also be obtained from these drawings without any creative effort.

Figure 1 is a schematic structural diagram of the utility model.

In the above drawings, the names of the parts corresponding to the reference numerals are as follows:

1. Constant pressure and constant speed pump; 2. The first six-way valve; 3. The first valve; 4. The second valve; 5. The simulated formation water storage tank; 6. The simulated formation oil storage tank; 7. The third valve; 8. Fourth valve; 9. Second six-way valve; 10. Fifth valve; 11. First core holder; 12. Sixth valve; 13. Third six-way valve; 14. Seventh valve; 15 , the second core holder; 16, the first back pressure valve; 17, the confining pressure pump; 18, the fourth six-way valve; 19, the fifth six-way valve; 20, the eighth valve; 21, the ninth valve; 22, the tenth valve; 23, the third core holder; 24, the eleventh valve; 25, the twelfth valve; 26, the fourth core holder; 27, the second back pressure valve; 28, the tenth Three valves; 29, fourteenth valve; 30, fifteenth valve; 31, fifth core holder; 32, sixteenth valve; 33, seventeenth valve; 34, sixth core holder; 35 , the third back pressure valve; 36, the eighteenth valve; 37, the nineteenth valve.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present utility model will be further described below with reference to the accompanying drawings and examples. The embodiments of the present utility model include but are not limited to the following examples. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

Example

As shown in FIG. 1 , this embodiment provides a combined core-flooding experimental device for characterizing the degree of reservoir disturbance. First of all, it should be noted that the serial number terms such as "first" and "second" described in this embodiment are only used to distinguish similar components, and cannot be understood as a specific limitation on the protection scope.

In this embodiment, the combined core displacement experimental device includes a constant pressure and constant speed pump 1, a first six-way valve 2, a storage tank, a second six-way valve 9, and a first core holder arranged in sequence along the pipeline direction. group, the third six-way valve 13 and the second core holder group; and the other path includes the confining pressure pump 17, the fourth six-way valve 18 (the fifth six-way valve 19), the first core holder group ( The second core holder group); wherein, the fourth six-way valve 18 is connected to any one of the first core holders 11 through the eighth valve 20; the fifth six-way valve 19 is connected to any second core through the ninth valve The holder 15 is attached.

In this embodiment, the first core holder group and the second core holder group are provided with three parallel groups, and the first core holder group includes the fifth valve 10 and the first core holder connected in sequence. The fifth valve 10 is connected to the second six-way valve 9 ; the sixth valve 12 is connected to the third six-way valve 13 . In addition, the second core holder group includes a seventh valve 14, a second core holder 15 and a first back pressure valve 16 connected in sequence; the seventh valve 14 is connected with the third six-way valve 13, and the third A back pressure valve 16 is connected to the simulated formation water storage tank 5 or the simulated formation oil storage tank 6 .

In this embodiment, the first six-way valve 2 is connected to the simulated formation water storage tank 5 through the first valve 3 , and the first six-way valve 2 is connected to the simulated formation oil storage tank 6 through the second valve 4 . A third valve 7 is arranged between the outlet of the simulated formation water storage tank 5 and the outlet of the simulated formation oil storage tank 6 , and a fourth valve 8 is arranged between the simulated formation oil storage tank 6 and the second six-way valve 9 .

The working principle of this embodiment is briefly described below:

In this embodiment, the three parallel branches are: the first branch is routed to the fifth valve 10, the first core holder 11, the sixth valve 12, the third six-way valve 13, the seventh valve 14, the second core The holder 15 and the first back pressure valve 16 are composed; the second branch is composed of the tenth valve 22, the third core holder 23, the eleventh valve 24, the third six-way valve 13, the twelfth valve 25, the third valve The four core holders 26 and the second back pressure valve 27 are composed; the third branch is composed of the fifteenth valve 30, the fifth core holder 31, the sixteenth valve 32, the third six-way valve 13, and the seventeenth valve 33 . The sixth core holder 34 and the third back pressure valve 35 .

Six cores that have been tested for single-phase water-liquid permeability were selected for vacuuming and saturating simulated formation water treatment, and then each core was placed into six cores according to the three heterogeneous combination schemes set based on the actual situation of the reservoir. In the holder, three sets of parallel combined cores are formed (the first core holder 11 and the second core holder 15 constitute the first group of combined cores; the third core holder 23 and the fourth core holder 26 constitute the second group of combined cores; the fifth core holder 31 and the sixth core holder 34 constitute the third group of combined cores).

(1) Single-phase water-liquid permeability test of composite cores

Open the first valve 3, the third valve 7, the fourth valve 8, the fifth valve 10, the sixth valve 12, the seventh valve 14, the first back pressure valve 16, the eighth valve 20 and the ninth valve 21, using constant The pressure constant speed pump 1 presses the simulated formation water storage tank 5, so that the simulated formation water flows through the first group of combined cores composed of the first core holder 11 and the second core holder 15, and passes through the first six-way during the period. The pressure gauges on valve 2 and the second six-way valve 9 monitor and control the pumping pressure differential, while the pressure in the first core holder 11 and the second core holder 15 is controlled by the confining pressure pump 17, and finally, by The volume and test time of outflowing simulated formation water can be calculated, combined with the basic parameters of the core, to calculate the single-phase water-liquid permeability of the first group of combined cores composed of the first core holder 11 and the second core holder 15. Rate.

Open the first valve 3, the third valve 7, the fourth valve 8, the tenth valve 22, the eleventh valve 24, the twelfth valve 25, the second back pressure valve 27, the thirteenth valve 28 and the fourteenth valve 29. Use the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the second group of combined cores formed by the third core holder 23 and the fourth core holder 26. The pressure gauges on the first six-way valve 2 and the second six-way valve 9 monitor and control the pumping pressure differential, while the pressure in the third core holder 23 and the fourth core holder 26 is controlled by the confining pressure pump 17 Finally, by calculating the volume and test time of the outflowing simulated formation water, combined with the basic parameters of the core, the single-phase water of the second group of combined cores composed of the third core holder 23 and the fourth core holder 26 can be calculated. Liquid permeability.

Open the first valve 3, the third valve 7, the fourth valve 8, the fifteenth valve 30, the sixteenth valve 32, the seventeenth valve 33, the third back pressure valve 35, the eighteenth valve 36 and the nineteenth valve The valve 37 uses the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the third group of combined cores composed of the fifth core holder 31 and the sixth core holder 34, during which The pumping pressure differential is monitored and controlled by the pressure gauges on the first six-way valve 2 and the second six-way valve 9, while the confining pressure pump 17 controls the pressure in the fifth core holder 31 and the sixth core holder 34. Finally, the single phase of the third group of combined cores composed of the fifth core holder 31 and the sixth core holder 34 can be calculated by calculating the volume and test time of the simulated formation water flowing out and combining with the basic parameters of the core. Water permeability measurement.

(2) Simulation of single mining of composite cores

(1) Establish the irreducible water saturation of the composite core

Open the second valve 4, the fourth valve 8, the fifth valve 10, the sixth valve 12, the seventh valve 14, the first back pressure valve 16, the eighth valve 20 and the ninth valve 21, and use the constant pressure and constant speed pump 1 The simulated formation oil storage tank 6 is pressed to make the simulated formation oil flow through the first group of combined cores composed of the first core holder 11 and the second core holder 15, during which it passes through the first six-way valve 2 and the second core holder. The pressure gauge on the two-six-way valve 9 monitors and controls the pumping pressure difference, and at the same time controls the pressure in the first core holder 11 and the second core holder 15 through the confining pressure pump 17, when the outflow liquid is 100% When simulating formation oil, the constant pressure and constant speed pump 1 is turned off, thus completing the establishment of irreducible water saturation of the first group of combined cores composed of the first core holder 11 and the second core holder 15 .

Open the second valve 4, the fourth valve 8, the tenth valve 22, the eleventh valve 24, the twelfth valve 25, the second back pressure valve 27, the thirteenth valve 28 and the fourteenth valve 29, using constant pressure The constant speed pump 1 presses the simulated formation oil storage tank 6, so that the simulated formation oil flows through the second set of combined cores formed by the third core holder 23 and the fourth core holder 26, and passes through the first six-way during the period. The pressure gauges on the valve 2 and the second six-way valve 9 monitor and control the pumping pressure differential, and at the same time control the pressure in the third core holder 23 and the fourth core holder 26 through the confining pressure pump 17, when the liquid flows out When the simulated formation oil is 100%, the constant pressure and constant speed pump 1 is turned off, thus completing the establishment of irreducible water saturation of the second group of combined cores composed of the third core holder 23 and the fourth core holder 26 .

Open the second valve 4, the fourth valve 8, the fifteenth valve 30, the sixteenth valve 32, the seventeenth valve 33, the third back pressure valve 35, the eighteenth valve 36 and the nineteenth valve 37, using constant The pressure constant speed pump 1 presses the simulated formation oil storage tank 6, so that the simulated formation oil flows through the third group of combined cores composed of the fifth core holder 31 and the sixth core holder 34, The pressure gauges on the through valve 2 and the second six-way valve 9 monitor and control the pumping pressure difference, and at the same time control the pressure of the fifth core holder 31 and the sixth core holder 34 through the confining pressure pump 17, when the liquid flows out When the simulated formation oil is 100%, the constant pressure and constant speed pump 1 is turned off, thus completing the establishment of irreducible water saturation of the third group of combined cores composed of the fifth core holder 31 and the sixth core holder 34 .

(2) Determine the recovery degree of the composite core

On the basis of completing the establishment of irreducible water saturation of the first group of composite cores, close the second valve 4, open the first valve 3, the third valve 7, the fourth valve 8, the fifth valve 10, the sixth valve 12, the first valve 3, the third valve 7, the fourth valve 8, the fifth valve 10, the sixth valve 12, the The seventh valve 14, the first back pressure valve 16, the eighth valve 20 and the ninth valve 21 use the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the first core holder. 11 and the second core holder 15 constitute the first group of combined cores for water flooding, during which the pumping pressure difference is monitored and controlled by the pressure gauges on the first six-way valve 2 and the second six-way valve 9, and through The confining pressure pump 17 controls the pressure in the first core holder 11 and the second core holder 15, when the outflow liquid is 100% simulated formation water, the constant pressure and constant speed pump 1 is turned off, and the simulation of displacement is measured and counted The formation oil volume, combined with the basic parameters of the core and the irreducible water saturation of the first group of combined cores, is calculated to obtain the simulated formation oil recovery degree of the first group of combined cores.

On the basis of completing the establishment of irreducible water saturation of the second group of composite cores, close the second valve 4, open the first valve 3, the third valve 7, the fourth valve 8, the tenth valve 22, the eleventh valve 24, The twelfth valve 25, the second back pressure valve 27, the thirteenth valve 28 and the fourteenth valve 29 use the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the third The second group of combined cores formed by the core holder 23 and the fourth core holder 26 is used for water flooding, during which the pumping pressure is monitored and controlled by the pressure gauges on the first six-way valve 2 and the second six-way valve 9 At the same time, the pressure in the third core holder 23 and the fourth core holder 26 is controlled by the confining pressure pump 17. When the outflow liquid is 100% simulated formation water, the constant pressure and constant speed pump 1 is turned off, and the displacement is measured and counted. The replaced simulated formation oil volume is combined with the basic parameters of the core and the irreducible water saturation of the second group of combined cores to calculate the simulated formation oil recovery degree of the second group of combined cores.

On the basis of completing the establishment of irreducible water saturation of the third group of composite cores, close the second valve 4, open the first valve 3, the third valve 7, the fourth valve 8, the fifteenth valve 30, and the sixteenth valve 32. , the seventeenth valve 33, the third back pressure valve 35, the eighteenth valve 36 and the nineteenth valve 37, use the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the The third group of combined cores composed of the five core holders 31 and the sixth core holder 34 is used for water flooding, during which the pumping is monitored and controlled by the pressure gauges on the first six-way valve 2 and the second six-way valve 9 The pressure difference, while controlling the pressure in the fifth core holder 31 and the sixth core holder 34 through the confining pressure pump 17, when the outflow liquid is 100% simulated formation water, the constant pressure and constant speed pump 1 is turned off, measured and counted The simulated formation oil volume displaced by the displacement is combined with the basic parameters of the core and the irreducible water saturation of the third group of combined cores to calculate the simulated formation oil recovery degree of the third group of combined cores.

(3) Simulation of commingled mining of composite cores

According to the method of single mining simulation of combined cores, first establish the irreducible water saturation of each group of combined cores (try to ensure that the irreducible water saturation of each group of combined cores is basically the same during single mining simulation and combined mining simulation), and then close the second valve 4, Open the first valve 3, the third valve 7, the fourth valve 8, the fifth valve 10, the sixth valve 12, the seventh valve 14, the first back pressure valve 16, the eighth valve 20, the ninth valve 21, the tenth valve Valve 22, Eleventh Valve 24, Twelfth Valve 25, Second Back Pressure Valve 27, Thirteenth Valve 28, Fourteenth Valve 29, Fifteenth Valve 30, Sixteenth Valve 32, Seventeenth Valve 33. The third back pressure valve 35, the eighteenth valve 36 and the nineteenth valve 37 use the constant pressure and constant speed pump 1 to pressurize the simulated formation water storage tank 5, so that the simulated formation water flows through the three groups of parallel combined cores, respectively. To carry out water flooding, when the liquid flowing out of the branches of the cores of each group is 100% simulated formation water, turn off the constant pressure and constant speed pump 1, measure and count the simulated formation oil volume displaced by each branch, and combine the basic parameters of the core and The irreducible water saturation of each group of assemblage cores can be calculated to obtain the simulated formation oil recovery degree of each group of assemblage cores during commingled production.

(4) Quantitative characterization of interlayer interference

Combined with (2) and (3), the simulated formation oil recovery results of each group of combined core branches during single and commingled production are calculated, combined with the formula of the interference coefficient of the recovery degree, and the results can be used for interlayer interference phenomenon. Quantitative characterization.

Interlayer interference coefficient formula:

where:

γ(t)——interference coefficient of recovery degree, dimensionless;

E _rdi (t)——the degree of recovery when the i-th layer is single-mined, dimensionless;

_Erhi (t)——The recovery degree of the i-th layer when multi-layer commingled mining, dimensionless.

The above-mentioned embodiments are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any changes made by adopting the design principles of the present invention and by performing non-creative work on this basis shall belong to the present invention. within the scope of the new protection.

Claims (8)

1. a combined core displacement experimental device characterizing reservoir interference degree, is characterized in that, comprises constant pressure constant velocity pump, the first six-way valve, the simulation formation water storage tank, the simulation formation oil storage tank, the second six-way a valve, a first core holder group, a third six-way valve, a second core holder group and a confining pressure pump; the first core holder group is arranged in parallel with an array; the second core holder group The arrays are arranged in parallel; the first six-way valve is respectively connected with the simulated formation water storage tank and the simulated formation oil storage tank, and receives the pressure of the constant pressure and constant speed pump and provides the simulated formation pressure; the input of the second six-way valve are respectively connected with the simulated formation water storage tank and the simulated formation oil storage tank, and the outputs are respectively connected with the first core holder group in one-to-one correspondence, so as to provide simulated formation water and/or simulated formation oil; the third six-way connection The valve is connected between the first core holder group and the second core holder group; the confining pressure pump subsection is connected with the first core holder group and the second core holder group in one-to-one correspondence; The output of the second core holder group is connected to a simulated formation water storage tank or a simulated formation oil storage tank. 2. A combined core-flooding experimental device for characterizing reservoir disturbance degree according to claim 1, characterized in that, the first core-holder group comprises a fifth valve connected in sequence, the first core-holding The fifth valve is connected with the second six-way valve; the sixth valve is connected with the third six-way valve. 3. a kind of combined core-flooding experimental device for characterizing reservoir disturbance degree according to claim 1 and 2, is characterized in that, described second core holder group comprises the seventh valve, the second core that are connected in sequence a holder and a first back pressure valve; the seventh valve is connected with the third six-way valve, and the first back pressure valve is connected with a simulated formation water storage tank or a simulated formation oil storage tank. 4. A combined core-flooding experimental device for characterizing reservoir interference degree according to claim 1, wherein a fourth six-way valve is provided between the first core holder group and the confining pressure pump . 5. The combined core-flooding experimental device for characterizing the degree of reservoir disturbance according to claim 4, characterized in that it further comprises an eighth connecting valve between the fourth six-way valve and the first core holder group valve. 6. A combined core-flooding experimental device for characterizing reservoir interference degree according to claim 1, wherein a fifth six-way valve is provided between the second core holder group and the confining pressure pump . 7. A combined core-flooding experimental device for characterizing reservoir interference degree according to claim 6, wherein a ninth valve is provided between the fifth six-way valve and the second core holder group . 8. A combined core-flooding experimental device for characterizing reservoir disturbance degree according to claim 1, characterized in that, further comprising a first valve arranged between the first six-way valve and the simulated formation water storage tank, The second valve arranged between the first six-way valve and the simulated formation oil storage tank, the third valve arranged between the outlet of the simulated formation water storage tank and the outlet of the simulated formation oil storage tank, arranged in the simulated formation oil storage tank The fourth valve between the outlet of the tank and the second six-way valve.

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