CN112727430B - Flow guiding capacity testing device - Google Patents
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- CN112727430B CN112727430B CN202110036653.5A CN202110036653A CN112727430B CN 112727430 B CN112727430 B CN 112727430B CN 202110036653 A CN202110036653 A CN 202110036653A CN 112727430 B CN112727430 B CN 112727430B
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- 238000012360 testing method Methods 0.000 title claims abstract description 181
- 239000011435 rock Substances 0.000 claims abstract description 117
- 239000007788 liquid Substances 0.000 claims abstract description 93
- 239000002253 acid Substances 0.000 claims abstract description 30
- 238000005530 etching Methods 0.000 claims abstract description 26
- 239000012085 test solution Substances 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 230000000712 assembly Effects 0.000 abstract description 8
- 238000000429 assembly Methods 0.000 abstract description 8
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- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005457 optimization Methods 0.000 abstract description 6
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 16
- 239000012530 fluid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
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- 238000004364 calculation method Methods 0.000 description 2
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Abstract
The invention provides a device for testing the flow conductivity, and relates to the technical field of oil and gas exploration and development. The flow conductivity testing device is applied to the flow conductivity test of the acid fracturing fracture and comprises a test liquid supply module and a plurality of flow conductivity testing modules; the diversion test modules are sequentially arranged along the conveying direction of the test liquid, and each diversion test module comprises an etched rock plate and a rock plate container assembly; the etching rock plate is arranged in the rock plate container assembly, and the surface of the etching rock plate is provided with a main groove formed after acid liquor etching; the rock plate container assemblies comprise liquid inlets and liquid outlets which are positioned at two ends of the length direction, the liquid outlet between every two adjacent rock plate container assemblies is connected with the liquid inlets, and at least one pressure sensor is further arranged on each rock plate container assembly. The conductivity testing device provided by the invention can accurately test the conductivity change rule along the length direction of the crack under the condition of the actual crack length, thereby providing favorable help for the optimization of various key indexes in the acid fracturing technology.
Description
Technical Field
The invention relates to the technical field of oil and gas exploration and development, in particular to a flow conductivity testing device.
Background
The acid fracturing technology is widely applied to efficient development of carbonate oil and gas reservoirs, the acid fracturing technological process is that an oil and gas reservoir is opened by utilizing fracturing hydraulic pressure to form an artificial crack, acid liquor is injected to etch the wall surface of the artificial crack, and the etching is uneven under the influence of the heterogeneity of reservoir rock minerals, so that an uneven etching groove is formed, after acid fracturing construction is finished, the artificial crack is closed, and the uneven etching groove becomes an oil and gas high-speed flow channel.
The flow conductivity of the oil gas allowed to flow in the unevenly etched grooves is called as the conductivity, and the conductivity is one of the key indexes for evaluating the acid fracturing effect. However, the conductivity of the non-uniformly etched trenches actually formed underground is difficult to measure directly, and is basically measured in a laboratory by a simulation device.
The existing simulation device for testing the flow conductivity scales the artificial crack formed by underground acid fracturing in equal proportion, and the actual crack length (10) is difficult to reflect accurately 1 ～10 2 m order of magnitude) along the change rule of the flow conductivity in the length direction of the crackAnd the optimization of various key indexes in the acid fracturing technology is negatively influenced.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a flow conductivity testing device for solving the technical problems that the flow conductivity change rule along the length direction of a crack under the condition of actual crack length is difficult to accurately reflect by a flow conductivity testing simulation device provided in the prior art, and the optimization of various key indexes in the acid fracturing technology is negatively influenced.
In order to achieve the above object, the present application provides a conductivity testing apparatus, which is applied to conductivity testing of acid fracturing cracks, and the conductivity testing apparatus includes a testing liquid supply module and a plurality of conductivity testing modules;
the test solution supply and delivery module is used for storing and delivering test solution;
the diversion test modules are sequentially arranged along the conveying direction of the test liquid, and each diversion test module comprises an etched rock plate and a rock plate container assembly;
the etching rock plate is arranged in the rock plate container assembly, a main groove formed after acid liquor etching is formed in the surface of the etching rock plate, and the main groove allows test liquid to pass through;
the rock plate container assembly comprises a liquid inlet and a liquid outlet which are positioned at two ends of the length direction, the liquid outlet is connected with the liquid inlet, at least one pressure sensor is further arranged on the rock plate container assembly, and the pressure sensor is used for detecting the pressure of test liquid in the rock plate container assembly.
In one possible embodiment, the etched rock plate in each rock plate container assembly has a different concentration of acid solution used to etch the main trench in the surface.
In a possible implementation manner, along the conveying direction of the test liquid, the concentration of the acid liquid used for etching the surface of each etched rock plate to form the main groove is from low to high.
In a possible embodiment, the flow guide test modules are distributed along the length direction.
In a possible embodiment, the flow guiding test modules are distributed in the width direction.
In a possible embodiment, the pressure sensor of the rock plate container assembly is provided in plurality, and the plurality of pressure sensors are distributed along the test liquid conveying direction.
In one possible embodiment, the rock plate container assembly comprises a rock plate container seat and a cover plate;
a containing groove for containing the etched rock plate is formed in the rock plate container seat, and the opening of the containing groove is positioned on the side surface of the rock plate container seat;
the cover plate is covered on the rock plate container seat and corresponds to the opening of the accommodating groove.
In a possible embodiment, the test solution delivery module comprises a test solution storage container and a delivery pump, an inlet of the delivery pump is connected to the test solution storage container, and an outlet of the delivery pump is connected to the liquid inlet of the rock plate container assembly located at the head end of the test solution delivery direction.
In one possible embodiment, the delivery pump is a constant flow pump.
In a possible embodiment, the apparatus further comprises a waste liquid collecting container disposed at the end of the conveying direction of the test liquid, and the waste liquid collecting container is connected to the liquid outlet of the rock plate container assembly located at the end of the conveying direction of the test liquid.
Compared with the prior art, the beneficial effects of the application are that:
the application provides a flow conductivity testing device, which is applied to the flow conductivity test of acid fracturing cracks and comprises a test liquid supply and delivery module and a plurality of flow conductivity testing modules; the test solution supply and delivery module is used for storing and delivering test solution; the diversion test modules are sequentially arranged along the conveying direction of the test liquid, and each diversion test module comprises an etched rock plate and a rock plate container assembly; the device comprises a rock plate container assembly, an etching rock plate, a test solution container assembly and a test solution container assembly, wherein the etching rock plate is arranged in the rock plate container assembly, the surface of the etching rock plate is provided with a main groove formed after acid solution etching, and the main groove allows the test solution to pass through; the rock plate container assemblies comprise liquid inlets and liquid outlets which are located at two ends of the length direction, the liquid outlets between every two adjacent rock plate container assemblies are connected with the liquid inlets, at least one pressure sensor is further arranged on each rock plate container assembly, and the pressure sensors are used for detecting the pressure of test liquid in the rock plate container assemblies. The application provides a conductivity testing device, through establishing ties a plurality of water conservancy diversion test module in proper order together for reach the condition that can simulate actual conditions after the length stack of sculpture rock plate, the actual crack of main slot simulation that the surface of sculpture rock plate formed, carry out computational analysis according to pressure sensor's on every rock plate container subassembly detection data again, accurate record is along the conductivity change law on the crack length direction under the actual crack length condition, and then provide favorable help to the optimization of various key indexes in the acid fracturing technique.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic perspective view illustrating a flow conductivity testing apparatus provided in an embodiment of the present application;
fig. 2 shows a top view of the conductivity testing device shown in fig. 1;
fig. 3 is a perspective view of an angle of a rock plate container assembly in the diversion test module of the diversion test apparatus of fig. 1;
figure 4 shows a perspective view of another angle of the rock plate container assembly shown in figure 3.
Description of the main element symbols:
100-test liquid supply and delivery module; 110-a test solution storage container; 120-a delivery pump;
200-a flow guide test module; 200 a-a first-stage diversion test module; 200 b-a second-stage flow guide test module; 200 c-a third-stage flow guide test module; 200 d-a fourth-stage flow guide test module; 201-a first C-shaped conduit; 202-a second C-shaped conduit; 203-a third C-shaped conduit; 210-a rock plate container assembly; 211-a rock plate container holder; 212-a cover plate; 2120-visual window; 213-bolt; 214-a pressure sensor;
300-waste liquid collection container.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example one
Referring to fig. 1 to 4, the conductivity testing apparatus provided in this embodiment is applied to the conductivity test of the acid fracturing fracture, and is specifically used for testing the conductivity change rule along the length direction of the actual fracture under the condition of simulating the actual fracture length, so as to provide a beneficial help for the optimization of various key indexes in the acid fracturing technology.
Referring to fig. 1 and fig. 2, the device for testing the fluid conductivity of the present embodiment includes a testing solution delivery module 100 and a plurality of fluid conductivity testing modules 200, wherein the testing solution delivery module 100 is used for storing and delivering a testing solution, that is, the testing solution delivery module 100 can store a certain amount of testing solution and also deliver the stored testing solution to the plurality of fluid conductivity testing modules 200; the combination of a plurality of diversion test modules 200 can simulate the actual crack and the crack length, and provide conditions for testing the diversion capability change rule in the actual crack length direction.
It is understood that the plurality of diversion test modules 200 represents a plurality of stages of diversion test modules 200, wherein each diversion test module 200 represents a stage of diversion test modules 200.
The diversion test modules 200 are sequentially arranged along the conveying direction of the test liquid, that is, the diversion test modules 200 are connected in series to achieve the purpose of increasing the length, and meanwhile, the number of the diversion test modules 200 can be adjusted according to experimental parameters.
It should be noted that, the actual situation can be simulated when the simulated crack length reaches more than 40m, and thus, in this embodiment, four diversion test modules 200 are taken as an example for detailed description, and of course, other numbers such as five, six, etc. may also be used.
In the present embodiment, the four diversion test modules 200 are sequentially a first diversion test module 200a, a second diversion test module 200b, a third diversion test module 200c, and a fourth diversion test module 200d along the test liquid conveying direction. That is, the first diversion test module 200a is located at the head end of the testing liquid conveying direction, and the opposite fourth diversion test module 200d is located at the tail end of the testing liquid conveying direction.
In some embodiments, the diversion test modules 200 are distributed along the length direction, and it is foreseeable that the connection lines of the first stage diversion test module 200a, the second stage diversion test module 200b, the third stage diversion test module 200c and the fourth stage diversion test module 200d along the length direction are a straight line, but may also be broken lines.
In other embodiments, as shown in fig. 2, the diversion test modules 200 are distributed along the width direction, and it is foreseeable that the first diversion test module 200a, the second diversion test module 200b, the third diversion test module 200c and the fourth diversion test module 200d are arranged in parallel to each other, so as to save space, further improve space utilization and save floor space.
Referring to fig. 2, 3 and 4, in the present embodiment, a scheme of distributing the diversion test modules 200 along the width direction is selected, wherein each of the first diversion test module 200a, the second diversion test module 200b, the third diversion test module 200c and the fourth diversion test module 200d includes an etched rock plate (not shown) and a rock plate container assembly 210.
That is, the number of the etched rock plate and rock plate container assemblies 210 corresponds to the number of the diversion test modules 200, the etched rock plate is arranged in the corresponding rock plate container assembly 210 during testing, the surface of the etched rock plate is provided with a main groove formed after acid etching, the shape and the size of the main groove are not uniform, and the main groove allows a test solution to pass through, that is, the actual crack is simulated through the main groove formed after acid etching.
In this embodiment, the concentration of the acid solution used for etching the main grooves on the surface of the etched rock plate in each rock plate container assembly 210 is different, so that the flow conductivity of the main grooves formed on the surface of each etched rock plate is different.
Further, along the conveying direction of the test liquid, the concentration of the acid liquid used for etching the surface of each etching rock plate to form the main groove is increased from low to high. The resistance of the main groove of the test liquid on each etched rock plate is reduced along the conveying direction of the test liquid, and the flow conductivity of the main groove on each etched rock plate is increased from weak to strong, so that the actual production process on the site is simulated, the test accuracy is improved, and the obtained test data is closer to the actual situation.
The rock plate container assemblies 210 include a liquid inlet and a liquid outlet at both ends in the length direction, and the liquid outlet between two adjacent rock plate container assemblies 210 is connected with the liquid inlet.
That is, the liquid outlet of the rock plate container assembly 210 in the first stage diversion testing module 200a is connected with the liquid inlet of the rock plate container assembly 210 in the second stage diversion testing module 200b through the first C-shaped pipe 201; the liquid outlet of the rock plate container assembly 210 in the second-stage diversion test module 200b is connected with the liquid inlet of the rock plate container assembly 210 in the third-stage diversion test module 200C through a second C-shaped pipeline 202; the outlet of the rock plate container assembly 210 in the third diversion test module 200C is connected to the inlet of the rock plate container assembly 210 in the fourth diversion test module 200d by a third C-shaped conduit 203.
Further, an inlet of the rock plate container assembly 210 in the first-stage diversion test module 200a is connected with the test liquid supply and delivery module 100 through a pipeline, and an outlet of the rock plate container assembly 210 in the fourth-stage diversion test module 200d is used for discharging the test liquid after the diversion capability test.
At least one pressure sensor 214 is further arranged on the rock plate container assembly 210, the pressure sensor 214 is used for detecting the pressure of the test liquid in the rock plate container assembly 210, and the flow conductivity of the main groove in each stage of the flow conductivity test module 200 is calculated according to the pressure data detected by the pressure sensor 214.
Optionally, the average value of the pressure data detected by the pressure sensor 214 is taken during calculation, so that the test error is further reduced, and the test accuracy is improved.
Further, in the present embodiment, the rock plate container assembly 210 is provided with a plurality of pressure sensors 214, and the plurality of pressure sensors 214 are distributed along the test fluid conveying direction.
Optionally, the plurality of pressure sensors 214 are distributed uniformly along the conveying direction of the test liquid, so as to further reduce the test error and improve the test accuracy.
In this embodiment, the rock plate container assembly 210 is arranged vertically, the rock plate container assembly 210 comprising a rock plate container holder 211 and a cover plate 212, wherein a receiving groove for receiving an etched rock plate is formed in the rock plate container holder 211, and an opening of the receiving groove is located at a side of the rock plate container holder 211.
In some embodiments, the rock plate container holder 211 is a cuboid structure, and the opening of the receiving groove is located on a wider side of the rock plate container holder 211, facilitating the installation and removal of the etched rock plate.
A liquid inlet and a liquid outlet in the rock plate container assembly 210 are arranged on the rock plate container seat 211, the liquid inlet and the liquid outlet are respectively located at two ends of the rock plate container seat 211, and the liquid inlet and the liquid outlet are both communicated with the accommodating groove.
The cover plate 212 covers the rock plate container holder 211 and corresponds to the opening of the receiving groove, that is, the cover plate 212 and the rock plate container holder 211 cooperate to seal the opening of the receiving groove to prevent the test solution from leaking.
Further, the cover plate 212 is connected with the rock plate container holder 211 through bolts 213, and the bolts 213 are uniformly distributed along the periphery of the cover plate 212, so that the cover plate 212 is ensured to be matched with the rock plate container holder 211 more tightly.
In some embodiments, a sealing gasket is disposed at the joint of the cover plate 212 and the rock plate container holder 211, and the sealing gasket is configured to achieve tight joint of the cover plate 212 and the rock plate container holder 211, so as to prevent the test solution from leaking out.
In other embodiments, a visual window 2120 is further disposed on the cover plate 212 to visualize the flow law of the test solution.
In this embodiment, the testing solution delivery module 100 includes a testing solution storage container 110 and a delivery pump 120, an inlet of the delivery pump 120 is connected to the testing solution storage container 110, and an outlet of the delivery pump 120 is connected to a liquid inlet of the rock plate container assembly 210 in the first stage diversion testing module 200a located at the head end of the testing solution delivery direction.
The testing fluid stored in the testing fluid storage container 110 is input into the first-stage diversion testing module 200a by the delivery pump 120 according to a preset flow rate, optionally, the testing fluid storage container 110 is of a tank structure, the delivery pump 120 is a constant flow pump, and the delivery flow rate of the constant flow pump is stable and constant.
In this embodiment, the conductivity testing device further includes a waste liquid collecting container 300, the waste liquid collecting container 300 is disposed at the end of the conveying direction of the testing liquid, and is used for collecting the testing liquid after passing the conductivity testing, and the waste liquid collecting container 300 is connected with the liquid outlet of the rock plate container assembly 210 in the fourth stage conductivity testing module 200d located at the end of the conveying direction of the testing liquid.
Wherein, the volume of the waste liquid collecting container 300 is greater than or equal to the test liquid storage container 110, optionally, the waste liquid collecting container 300 is also a tank structure.
Referring to fig. 1 to 4, the present embodiment also provides a method for testing a flow conductivity based on a flow conductivity testing device, where the method for testing a flow conductivity includes:
s100: installing a flow guiding capacity testing device;
s200: preparing a test solution according to the test parameters;
s300: starting the delivery pump 120, and inputting the test solution into the flow conductivity testing device;
s400: after the liquid to be tested flows stably in the etched rock plate, pressure data detected by each pressure sensor 214 is obtained, and the average flow conductivity between every two adjacent pressure sensors 214 along the conveying direction of the liquid to be tested is calculated.
Wherein, the pressure data detected by each pressure sensor 214 is averaged, and the average flow conductivity between every two adjacent pressure sensors 214 is calculated by the following formula:
K w ＝Q×μ×△L/(△p×h)；
wherein, K w Average flow conductance between each two adjacent pressure sensors 214; q-delivery pump 120 displacement; μ -viscosity of the test fluid; Δ L — the distance between each two adjacent pressure sensors 214; Δ p — the pressure difference recorded by each two adjacent pressure sensors 214; h-height of the etched rock plate.
The conductivity testing device provided by the embodiment sequentially connects a plurality of conductivity testing modules 200 in series, so that the length of the etched rock plate is overlapped to reach the condition capable of simulating the actual situation, the main groove formed on the surface of the etched rock plate simulates the actual crack, calculation and analysis are performed according to the detection data of the pressure sensor 214 on each rock plate container assembly 210, the conductivity change rule along the crack length direction under the condition of accurately measuring the actual crack length is accurately measured, and favorable help is provided for the optimization of various key indexes in the acid fracturing technology.
In addition, the conductivity testing device provided by the embodiment can obtain the conductivity of the main groove formed by etching different acid solutions through one-time testing, and compared with a mode that the etching is repeated until the acid solutions lose chemical reaction capacity in the prior art, the conductivity testing device is simpler, more accurate in testing result and higher in reliability.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. The flow conductivity testing device is characterized by being applied to flow conductivity testing of acid fracturing cracks and comprising a testing liquid supply and delivery module and a plurality of flow conductivity testing modules;
the test solution supply and delivery module is used for storing and delivering test solution;
the diversion test modules are sequentially arranged along the conveying direction of the test liquid, and each diversion test module comprises an etched rock plate and a rock plate container assembly;
the etching rock plate is arranged in the rock plate container assembly, a main groove formed after acid liquor etching is formed in the surface of the etching rock plate, the main groove allows test liquid to pass through, and the concentration of the acid liquor used for forming the main groove by etching the surface of each etching rock plate is from low to high along the conveying direction of the test liquid;
the rock plate container assembly comprises a liquid inlet and a liquid outlet which are positioned at two ends of the length direction, the liquid outlet is adjacent to the liquid outlet, the liquid outlet is connected with the liquid inlet, at least one pressure sensor is further arranged on the rock plate container assembly, and the pressure sensor is used for detecting the pressure of test liquid in the rock plate container assembly.
2. The conductivity testing device of claim 1, wherein the conductivity testing modules are distributed along the length direction.
3. The conductivity testing device of claim 1, wherein the conductivity testing modules are distributed along the width direction.
4. The conductivity testing device of claim 1, wherein the pressure sensors of the rock plate container assembly are arranged in plurality, and the plurality of pressure sensors are distributed along the conveying direction of the test liquid.
5. The conductivity testing device of any of claims 1-4, wherein the rock plate container assembly comprises a rock plate container seat and a cover plate;
a containing groove for containing the etched rock plate is formed in the rock plate container seat, and an opening of the containing groove is positioned on the side surface of the rock plate container seat;
the cover plate cover is arranged on the rock plate container seat and corresponds to the opening of the accommodating groove.
6. The apparatus for testing the flow conductivity of a rock plate container assembly according to claim 1, wherein the test liquid supply module comprises a test liquid storage container and a delivery pump, an inlet of the delivery pump is connected to the test liquid storage container, and an outlet of the delivery pump is connected to the liquid inlet of the rock plate container assembly at the first end of the test liquid delivery direction.
7. The conductivity testing device of claim 6, wherein the delivery pump is a constant flow pump.
8. The conductivity testing device of claim 1, further comprising a waste liquid collecting container disposed at an end of the conveying direction of the testing liquid, the waste liquid collecting container being connected to the liquid outlet of the rock plate container assembly at the end of the conveying direction of the testing liquid.
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