Automatic rock core pore permeability tester

Abstract

The utility model relates to an automatic rock core pore permeability tester, which comprises a high-pressure gas cylinder, a first pressure gauge, a first switch valve and a first electric valve, the first electric valve is connected with the second, third and fourth electric valves, and a pressure sensor, a container and a rock sampler are arranged among the electric valves; an outlet of the first electric valve is connected with a first branch and a second branch; the first branch is provided with a sixth electric valve and a model cup; the second branch is connected in parallel with a plurality of electric valves, pressure sensors, a constant volume device and a clamp holder, an inlet of the clamp holder is connected with a second switch valve and a water pump, and a fifth pressure sensor and a water tank are arranged. According to the utility model, the problems of low measurement precision, complex operation, low efficiency and unstable data in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of core testing, and particularly relates to a core porosity and permeability automatic tester. BACKGROUND

[0002] In the field of geological exploration and petroleum engineering, core porosity and permeability are important parameters for evaluating reservoir characteristics. Traditional measurement methods usually rely on manual operation, with low measurement accuracy and efficiency, and are easily affected by human factors.

[0003] Existing core porosity and permeability measurement systems usually use manual control and reading. The basic principle is to apply pressure to the two ends of the core sample through high-pressure gas or liquid medium, and then measure the flow rate of the medium through the core sample. The porosity and permeability of the core are calculated through these data. However, this method has the following significant disadvantages: 1. Low measurement accuracy: due to the errors of manual operation and reading, the accuracy of the measurement results is difficult to guarantee. 2. Complex operation: the operator needs to have high professional knowledge and skills, and the entire measurement process is time-consuming and complex. 3. Low efficiency: each measurement needs to reset and calibrate the equipment, resulting in low measurement efficiency. 4. Unstable data: fluctuations and errors caused by human operation make the stability and reliability of the data poor. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a core porosity and permeability automatic tester, aiming at solving the problems in the prior art and realizing efficient and accurate core porosity and permeability measurement.

[0005] The technical scheme adopted by the utility model is as follows: the utility model provides a core porosity and permeability automatic tester, which comprises: a high-pressure gas cylinder, a first pressure gauge connected through a first pressure reducing valve, a first on-off valve connected to the first pressure gauge, and a first electric valve connected to the first on-off valve; the outlet of the first electric valve is connected to a second electric valve, the second electric valve is connected to a third electric valve, and a first pressure sensor and a first container are arranged therebetween; the third electric valve is connected to a fourth electric valve, and a rock sample device is arranged therebetween; the outlet of the first electric valve is also connected to a first branch and a second branch, and a sixth electric valve and a model cup are arranged on the first branch; the second branch is connected in parallel with a fifth electric valve, a second pressure sensor, a seventh electric valve, a first constant container, a third pressure sensor, a tenth electric valve, and a clamp; a third branch is also arranged in parallel on the second branch, a differential pressure valve is connected in series on the third branch, a ninth electric valve is connected in parallel, a second constant container, a fourth pressure sensor, an eighth electric valve, a fourth on-off valve, a fifth on-off valve, and a flowmeter are arranged on a fourth branch; the inlet of the clamp is connected to a second on-off valve, the second on-off valve is connected to a water pump, and a fifth pressure sensor and a water tank are arranged therebetween.

[0006] Further, one end of the first pressure reducing valve is connected with a first pressure gauge, the first pressure gauge is connected with a first on-off valve, and the first on-off valve is connected with a first electric valve.

[0007] Further, one end of the second electric valve is connected with a third electric valve, and a first pressure sensor and a first container are arranged between the second electric valve and the third electric valve.

[0008] Further, one end of the third electric valve is connected with a fourth electric valve, and a rock sample device is arranged between the third electric valve and the fourth electric valve.

[0009] Further, a sixth electric valve and a model cup are arranged on the first branch.

[0010] Further, a fifth electric valve and a second pressure sensor are arranged in parallel on the second branch.

[0011] Further, a seventh electric valve and a first constant container are arranged in parallel on the second branch.

[0012] Further, a third pressure sensor is arranged in parallel on the second branch.

[0013] Further, a tenth electric valve and a clamp are arranged in parallel on the second branch.

[0014] Further, a third branch is further arranged in parallel on the second branch, a differential pressure valve is arranged in series on the third branch, a ninth electric valve is arranged in parallel on the third branch, the third branch is connected with a fourth branch, a second constant container, a fourth pressure sensor, an eighth electric valve and a twelfth electric valve are arranged in parallel on the fourth branch, a fourth on-off valve, a fifth on-off valve and a flow meter are arranged in parallel on the fourth branch, an inlet of the clamp is connected with the second on-off valve, the second on-off valve is connected with a water pump, and a fifth pressure sensor and a water tank are arranged between the second on-off valve and the water pump.

[0015] Based on the above technical scheme, the core porosity and permeability automatic measuring instrument can realize automatic measurement of core porosity and permeability through connection of various electric valves, pressure sensors and containers. The high-pressure gas cylinder can accurately adjust the gas pressure through control of a series of valves and sensors, and measure the core porosity and permeability in the rock sample device. The system can automatically record and analyze measurement data, and improve the accuracy and efficiency of measurement. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The core porosity and permeability automatic measuring instrument provided by the utility model is shown in the component connection structure diagram.

[0017] Wherein, 1, high-pressure gas cylinder, 2, first pressure reducing valve, 3, first pressure gauge, 4, first on-off valve, 5, first electric valve, 6, second electric valve, 7, first pressure sensor, 8, third electric valve, 9, fourth electric valve, 10, first container, 11, rock sample device, 12, second pressure sensor, 13, fifth electric valve, 14, model cup, 15, sixth electric valve, 16, third pressure sensor, 17, seventh electric valve, 18, first constant volume container, 19, second constant volume container, 20, eighth electric valve, 21, fourth pressure sensor, 22, ninth electric valve, 23, differential pressure valve, 24, tenth electric valve, 25, gripper, 26, eleventh electric valve, 27, twelfth electric valve, 28, second on-off valve, 29, fifth pressure sensor, 30, water pump, 31, water tank, 32, third on-off valve, 33, fourth on-off valve, 34, fifth on-off valve, 35, flow meter.

[0018] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Specific embodiments:

[0022] As Figure 1 shown, the core porosity automatic measuring instrument provided by the present application, in a possible implementation manner, comprises the following components:

[0023] High-pressure cylinder 1: connected with first pressure gauge 3 through first pressure reducing valve 2; first pressure gauge 3: connected with first on-off valve 4; first on-off valve 4: connected with first electric valve 5; first electric valve 5: connected with second electric valve 6 and a branch. Second electric valve 6 is connected with third electric valve 8, between which first pressure sensor 7 and first container 10 are arranged; third electric valve 8: connected with fourth electric valve 9, between which rock sample device 11 is arranged; the outlet of first electric valve 5 is also connected with two branches: first branch: provided with sixth electric valve 15 and model cup 14; second branch: provided with fifth electric valve 13, second pressure sensor 12, seventh electric valve 17, first constant volume container 18, third pressure sensor 16, tenth electric valve 24 and clamp 25; a third branch is also connected in parallel on the second branch, and differential pressure valve 23 is connected in series on the third branch, and ninth electric valve 22 is connected in parallel.

[0024] Fourth branch: provided with second constant volume container 19, fourth pressure sensor 21, eighth electric valve 20, twelfth electric valve 27, fourth on-off valve 33, fifth on-off valve 34 and flow meter 35 in parallel. The inlet of clamp 25 is connected with second on-off valve 28, and second on-off valve 28 is connected with water pump 30, between which fifth pressure sensor 29 and water tank 31 are arranged.

[0025] Working principle:

[0026] The automatic tester provides high-pressure gas through high-pressure cylinder 1, adjusts the flow and pressure of the gas through a series of pressure reducing, pressure monitoring, on-off and control valves, so as to measure the permeability of the core hole. The gas in high-pressure cylinder 1 is first adjusted in pressure by first pressure reducing valve 2, then monitored in pressure by first pressure gauge 3, and then enters different control valve and sensor systems through first on-off valve 4 and first electric valve 5.

[0027] Second electric valve 6, third electric valve 8 and first pressure sensor 7 and first container 10 arranged therebetween constitute a preliminary pressure and flow control link, through which the accurate control of the gas flow can be realized. Third electric valve 8 and fourth electric valve 9 and rock sample device 11 arranged therebetween are used for specific permeability test of the core sample.

[0028] The first branch and the second branch of first electric valve 5 provide different measurement paths. Sixth electric valve 15 and model cup 14 on the first branch can be used for test of the gas flow under different conditions. The second branch includes more control and measurement components, through which the comprehensive measurement of different parameters of the gas can be realized through fifth electric valve 13, second pressure sensor 12, seventh electric valve 17 and first constant volume container 18.

[0029] Through the parallel third branch and fourth branch, the test and control can be further refined. The differential pressure valve 23 and the ninth electric valve 22 on the third branch, the second constant container 19, the fourth pressure sensor 21, the eighth electric valve 20, the twelfth electric valve 27, the fourth switch valve 33, the fifth switch valve 34 and the flow meter 35 on the fourth branch constitute a more refined pressure and flow control system, which guarantees the accuracy and reliability of the test.

[0030] The gripper 25 and the related second switch valve 28, water pump 30, fifth pressure sensor 29 and water tank 31 provide the fixation of the sample and the circulation of the liquid medium, ensuring the stability and repeatability of the test process.

[0031] As Figure 1 shown, the utility model provides a kind of core hole permeameter, in a possible implementation, first pressure reducing valve 2 one end is connected first pressure gauge 3, first pressure gauge 3 is connected first switch valve 4, and first switch valve 4 is connected first electric valve 5.

[0032] Working principle:

[0033] This embodiment emphasizes that high-pressure gas is preliminarily regulated after passing through first pressure reducing valve 2 from high-pressure gas cylinder 1, then the pressure is monitored through first pressure gauge 3, and then enters the subsequent control system through first switch valve 4 and first electric valve 5. Through the coordinated work of these components, preliminary control and monitoring of high-pressure gas flow and pressure can be realized.

[0034] As Figure 1 shown, the utility model provides a kind of core hole permeameter, and second electric valve 6 one end is connected third electric valve 8, and first pressure sensor 7 and first container 10 are connected between them.

[0035] Working principle:

[0036] This embodiment emphasizes that after high-pressure gas is preliminarily regulated, it enters first pressure sensor 7 and first container 10 between second electric valve 6 and third electric valve 8. First pressure sensor 7 is used to monitor gas pressure in real time, and first container 10 is used to temporarily store gas to balance gas flow and pressure, ensuring the stability of subsequent tests.

[0037] As Figure 1 shown, the utility model provides a kind of core hole permeameter, in a possible implementation, third electric valve 8 one end is connected fourth electric valve 9, and rock sample device 11 is arranged between them.

[0038] Working principle:

[0039] This embodiment emphasizes that after the high-pressure gas passes through the third electric valve 8, the permeability test is carried out through the rock sample device 11, and the gas flow and pressure are controlled through the fourth electric valve 9. The rock sample device 11 is the core component of the whole test system, which is used for placing the core sample to be tested, and the permeability of the gas passing through the rock sample device 11 is measured.

[0040] As shown in Figure 1 The utility model provides a kind of core hole permeability automatic tester, in a possible implementation, sixth electric valve 15 and model cup 14 are equipped on the first branch.

[0041] Working principle:

[0042] This embodiment emphasizes that in addition to the main path connected with the second electric valve 6, a first branch is also connected at the outlet of the first electric valve 5. The sixth electric valve 15 and the model cup 14 are arranged on the first branch, which is used for gas flow test under different conditions. The sixth electric valve 15 is used to control the gas flow to the model cup 14, so as to measure the gas permeability under different conditions.

[0043] As shown in Figure 1 The utility model provides a kind of core hole permeability automatic tester, in a possible implementation, fifth electric valve 13 and second pressure sensor 12 are equipped in parallel on the second branch.

[0044] Working principle:

[0045] This embodiment emphasizes that the fifth electric valve 13 and the second pressure sensor 12 are arranged in parallel on the second branch at the outlet of the first electric valve 5. The fifth electric valve 13 is used to control the gas flow to different test paths, and the second pressure sensor 12 is used to monitor the pressure of the gas in the branch in real time, to ensure the accuracy and reliability of the test.

[0046] As shown in Figure 1 The utility model provides a kind of core hole permeability automatic tester, in a possible implementation, seventh electric valve 17 and first constant container 18 are equipped in parallel on the second branch.

[0047] Working principle:

[0048] This embodiment emphasizes that the seventh electric valve 17 and the first constant container 18 are arranged in parallel on the second branch. The seventh electric valve 17 is used to control the gas flow to the first constant container 18, and the first constant container 18 is used to temporarily store the gas, so as to balance the gas flow and pressure, and ensure the stability of subsequent test.

[0049] As shown in Figure 1As shown, in one possible embodiment of the automatic core permeability measuring instrument provided by this utility model, a third pressure sensor 16 is connected in parallel on the second branch.

[0050] Working principle:

[0051] This implementation emphasizes the parallel connection of a third pressure sensor 16 in the second branch. The third pressure sensor 16 is used to monitor the gas pressure in this branch in real time, ensuring that the pressure changes of the gas in different test paths can be accurately recorded and controlled, thereby improving the reliability of the test results.

[0052] like Figure 1 As shown, in one possible embodiment of the automatic core porosity and permeability measuring instrument provided by this utility model, a tenth electric valve 24 and a clamp 25 are connected in parallel on the second branch.

[0053] Working principle:

[0054] This embodiment emphasizes the parallel connection of a tenth electric valve 24 and a clamp 25 on the second branch. The tenth electric valve 24 controls the gas flow to the clamp 25, which is used to fix the sample to be tested, ensuring that the sample remains stable during the test, thereby improving the accuracy and reliability of the test.

[0055] like Figure 1 As shown, the present invention provides an automatic core porosity and permeability measuring instrument. In one possible embodiment, a third branch is connected in parallel to the second branch. A differential pressure valve 23 is connected in series on the third branch, and a ninth electric valve 22 is connected in parallel. The third branch connects to a fourth branch, and a second fixed container 19, a fourth pressure sensor 21, an eighth electric valve 20, a twelfth electric valve 27, a fourth switching valve 33, a fifth switching valve 34, and a flow meter 35 are connected in parallel on the fourth branch. The inlet of the clamp 25 is connected to the second switching valve 28, which is connected to the water pump 30. A fifth pressure sensor 29 and a water tank 31 are located between them.

[0056] Working principle:

[0057] This embodiment details the structure and function of the third and fourth branches on the second branch. The third branch regulates and controls the gas pressure difference through a series differential pressure valve 23 and a parallel ninth electric valve 22. The fourth branch accurately measures and controls the gas flow rate and pressure through a second fixed container 19, a fourth pressure sensor 21, an eighth electric valve 20, a twelfth electric valve 27, a fourth switching valve 33, a fifth switching valve 34, and a flow meter 35. The clamp 25 is connected to a water pump 30 through a second switching valve 28. The water pump 30 provides liquid circulation through a fifth pressure sensor 29 and a water tank 31, ensuring sample stability and accuracy of test results.

[0058] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0059] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

[0060] The above description of the present application and its embodiments is not restrictive, and the present application is not limited to the embodiments shown in the drawings. In general, if a person skilled in the art is inspired by the present application, they can design similar structural modes and embodiments without departing from the spirit of the present application, which should be within the scope of protection of the present application.

Claims

1. A core poroperm automatic tester, characterized in that, The utility model relates to a kind of high-pressure gas cylinder (1), by first pressure-reducing valve (2) connection first pressure gauge (3), the first pressure gauge (3) connection first switch valve (4), the first switch valve (4) connection first electric valve (5); The outlet of first electric valve (5) is connected with second electric valve (6), and second electric valve (6) is connected with third electric valve (8), and first pressure sensor (7) and first container (10) are arranged between them; Third electric valve (8) is connected with fourth electric valve (9), and rock sample device (11) is arranged between them; The outlet of first electric valve (5) is also connected with first branch and second branch, and sixth electric valve (15) and model cup (14) are arranged on first branch; Second branch is connected with fifth electric valve (13), second pressure sensor (12), seventh electric valve (17) and first constant container (18) in parallel, third pressure sensor (16), tenth electric valve (24) and holder (25) are connected in parallel on second branch; Third branch is also arranged in parallel on second branch, and differential pressure valve (23) is connected in series on third branch, and ninth electric valve (22) is connected in parallel, second constant container (19), fourth pressure sensor (21), eighth electric valve (20), twelfth electric valve (27), fourth switch valve (33) and fifth switch valve (34) and flowmeter (35) are arranged in parallel on fourth branch; The inlet of holder (25) is connected with second switch valve (28), and second switch valve (28) is connected with water pump (30), and fifth pressure sensor (29) and water tank (31) are arranged between them. One end of the first pressure-reducing valve (2) is connected with the first pressure gauge (3), and the first pressure gauge (3) is connected with the first switch valve (4), and the first switch valve (4) is connected with the first electric valve (5).

2. The automatic core porosity and permeability tester according to claim 1, characterized in that, One end of the second electric valve (6) is connected with the third electric valve (8), and the first pressure sensor (7) and the first container (10) are arranged between them.

3. The automatic core porosity and permeability tester according to claim 2, characterized in that, One end of the third electric valve (8) is connected with the fourth electric valve (9), and the rock sample device (11) is arranged between them.

4. The automatic core porosity and permeability tester according to claim 3, characterized in that, The sixth electric valve (15) and the model cup (14) are arranged on the first branch.

5. The automatic core porosity and permeability tester of claim 1, wherein, The fifth electric valve (13) and the second pressure sensor (12) are arranged in parallel on the second branch.

6. The automatic core porosity and permeability tester according to claim 5, characterized in that, The seventh electric valve (17) and the first constant container (18) are arranged in parallel on the second branch.

7. The automatic core porosity and permeability tester according to claim 6, characterized in that, The third pressure sensor (16) is arranged in parallel on the second branch.

8. The automatic core porosity and permeability tester according to claim 7, characterized in that, The tenth electric valve (24) and the holder (25) are arranged in parallel on the second branch.

9. The automatic core porosity and permeability tester according to claim 8, characterized in that, Third branch is also arranged in parallel on second branch, and differential pressure valve (23) is connected in series on third branch, and ninth electric valve (22) is connected in parallel, second constant container (19), fourth pressure sensor (21), eighth electric valve (20), twelfth electric valve (27) are arranged in parallel on fourth branch, fourth switch valve (33), fifth switch valve (34) and flowmeter (35) are arranged in parallel on fourth branch, the inlet of holder (25) is connected with second switch valve (28), and second switch valve (28) is connected with water pump (30), and fifth pressure sensor (29) and water tank (31) are arranged between them.

10. The automatic core porosity and permeability tester of claim 9, wherein, ​

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