CN214997619U - Injury evaluation experimental device for permeability of injected water - Google Patents
Injury evaluation experimental device for permeability of injected water Download PDFInfo
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- CN214997619U CN214997619U CN202120848856.XU CN202120848856U CN214997619U CN 214997619 U CN214997619 U CN 214997619U CN 202120848856 U CN202120848856 U CN 202120848856U CN 214997619 U CN214997619 U CN 214997619U
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Abstract
The utility model discloses an injection water permeability injury evaluation experimental apparatus mainly includes liquid supply system, pressurization system, measurement system. The liquid supply system is mainly a box body (2) which comprises three transparent glass containers with different specifications, a valve (K), a valve (L), a valve (M), a valve (N), a valve (O) and a valve (P); the pressurizing system mainly comprises a nitrogen cylinder (1), a valve (A), a valve (C) and a pressure gauge (B) which are used for applying inlet pressure, and a confining pressure pump (9), a valve (Q) and a pressure gauge (G) which are used for applying confining pressure; the metering system comprises a U-shaped pipe (4), a light source (5), a measuring cylinder (6), a photosensitive display screen (7), a computer (9) and a valve (J). The utility model has simple structure, convenient operation, accurate measurement and convenient assembly, and overcomes the problem that the injected fluid can not effectively invade the experimental rock core and improves the accuracy of data measurement; adopt the utility model discloses the device test permeability injury evaluation effect is better, can satisfy the demand of various different dosage mixed injection fluids.
Description
Technical Field
The utility model belongs to the technical field of an oil gas field development experimental facilities, especially, relate to an injection water permeability injury evaluation experimental apparatus.
Background
In the field of petroleum geological exploration and development research, a large number of experiments including displacement experiments, core physical property analysis experiments and the like are required according to different experimental content requirements, and the conventional experimental intermediate container cannot realize mixed fluid injection, cannot monitor actual injection amount and cannot simulate conditions such as temperature under stratum conditions; in the experimental metering process, the existing metering device has errors (dead volume), so that a U-shaped tube is adopted to combine a light source and a photosensitive display screen; except the two points, the original device is too heavy and inconvenient to operate in the using process. In view of the above, there is a need to provide an experimental apparatus for evaluating damage of permeability of injection fluid, which is simple in assembly, satisfies various displacement liquids, and is convenient for maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of mixed fluid injection rock core can not be realized to middle container, provides a simple and convenient injected water permeability injury evaluation experimental apparatus. The device can realize the mixed phase fluid injection rock core of different specifications during the experiment through the transformation to liquid supply system and measurement system, realizes the displacement process, and metering device designs for the U type pipe simultaneously, has got rid of the dead volume error of former experiment measurement and has measured accurately.
In order to achieve the above object, the present invention adopts the following technical solutions
An injection water permeability injury evaluation experimental device mainly comprises: nitrogen cylinder 1, box 2, rock core holder 3, display 7, computer 8 its characterized in that: the box body 2 is a transparent glass product, is connected with the rock core holder 3 through a pipeline and is controlled by a switch D and a tee E; the nitrogen cylinder 1 is connected with the tank body 2 through a pipeline, and the pipeline is controlled by a switch A, C and is connected with a pressure gauge B; the outlet of the core holder 3 is connected with a U-shaped pipe 4, the U-shaped pipe 4 is connected with a measuring cylinder 6 through a pipeline in a downward connection mode, and the U-shaped pipe 4 is controlled by a switch J; in addition, the three-way valve E is connected to a pressure gauge H, and the casing 2 and the core holder 3 are connected to a heating device F, I.
Preferably, the injection water permeability damage evaluation experimental device further comprises a liquid supply system, the box body 2 is a transparent glass device, the interior of the box body is composed of three glass containers with different specifications, one end of each valve K, one end of each valve L, one end of each valve M, one end of each valve N, one end of each valve O and one end of each valve P are connected to the gas supply system, the upper end of each valve C is connected with the valve D, and the other end of each valve D is connected with a pipeline connected with the core holder 3. In addition, the box body 2 is also externally connected with a heating device F, and the stratum conditions can be simulated.
Preferably, the damage evaluation experimental device for the permeability of the injected water is characterized in that: the metering system mainly comprises a U-shaped pipe (4), a light source (5), a measuring cylinder (6), a metering display (7) and a computer (8), wherein the U-shaped pipe is connected with an emptying valve (J) and discharges fluid to the measuring cylinder (6).
The utility model discloses a theory of operation: box 2 in be equipped with the glass container of three different specifications, when the displacement, three container carries out repeated rotary motion simultaneously, changes into anticlockwise rotation after clockwise rotation three rings promptly, guarantees that the injection fluid in the three glass container can evenly be thoughtlessly looks. In addition, the box body 2 is externally connected with a heating device, so that the formation condition can be simulated.
The utility model has the advantages that:
1. compare with traditional device survey, the utility model discloses a characteristics have: the device is convenient to connect, simple and easy to operate, is suitable for permeability test of any fluid, and simultaneously facilitates maintenance and overhaul of experimenters to equipment, thereby improving the accuracy of experimental results.
2. Compare with current injected water permeability injury evaluation experimental apparatus, the utility model discloses a characteristics have: the box body and the flow pipes with different specifications are glass products, and the injection state of the fluid can be monitored; the box body and the rock core holder are both provided with heating devices, so that the stratum conditions can be simulated; the metering device uses the U-shaped pipe, so that the metering result is more accurate.
3. The requirements of various fluids for permeability damage experiments can be met, the laboratory space is saved, the measurement result is accurate, and the operation is convenient.
Drawings
In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.
The attached drawing is a structural schematic diagram of the injury evaluation experimental device for the permeability of the injected water;
in the drawings: 1-nitrogen cylinder, 2-box, 3-core holder, 4-U-shaped tube, 5-light source, 6-graduated cylinder, 7-photosensitive display screen, 8-computer, 9-confining pressure pump; A. c, D, J, K, L, M, O, P-valve, B, G, H-pressure gauge; e-three-way valves; F. i-a heating device.
Detailed Description
The invention will be further described with reference to the following figures and examples:
as shown in the attached drawings, the experimental device for evaluating the damage of the permeability of the injected water mainly comprises: 1 nitrogen cylinder, 2 boxes, 3 rock core holders, 4U-shaped tubes, 5 light sources, 6 measuring cylinders, 7 photosensitive display screens, 8 computers and 9 confining pressure pumps. The glass box body 2 is connected with the rock core holder 3 through a pipeline and is controlled by a switch D and a tee joint E; the nitrogen cylinder 1 is connected with the tank body 2 through a pipeline, and the pipeline is controlled by a switch A, C and is connected with a pressure gauge B; the outlet of the core holder 3 is connected with a U-shaped pipe 4, the U-shaped pipe 4 is connected with a measuring cylinder 6 through a pipeline in a downward connection mode, and the U-shaped pipe is controlled by a valve J; in addition, the three-way valve E is connected with a pressure gauge H, the box body 2 and the core holder 3 are connected with a heating device F, I, and the core holder 3 is connected with a confining pressure pump 8 and a pressure gauge G which are controlled by a switch Q.
The experimental device for evaluating damage of permeability of injected water comprises the following specific operation steps:
1. the experimental core is loaded into the core holder 3, the valve Q is opened, and confining pressure is applied to the core holder by using the confining pressure pump 9.
2. Then, the displacement fluid is injected into the flow pipes of different specifications of the box body 2, after injection, the corresponding valves are ensured to be in a closed state, and the valve C, D connecting the nitrogen cylinder and the three-way valve is also in a closed state.
3. And opening the nitrogen cylinder and the valve A, and keeping the valve C closed to suppress the pressure of the gas, so that a stable gas source can be obtained during the experiment.
4. Then starting the box body 2 to make it rotate to and fro, when the fluid in the glass container is mixed evenly, opening the valve C, D and the corresponding glass container in the box body, observing the pressure gauge H, closing the nitrogen cylinder and the valve A after reaching the preset pressure, and keeping the pore pressure at the preset pressure.
5. To perform a displacement experiment under simulated formation conditions, the heating unit F, I connected to the casing 2 and the core holder 3 is simply turned on.
6. If stratum simulation is not needed, step 5 is skipped, the valve J is opened in the pressure maintaining process, so that the fluid flows into the measuring cylinder 6, because the measured flow is inaccurate, the valve J is closed after the pressure and the flow are stable (about 1PV), the light source 5 is simultaneously opened to start measurement, and the outlet flow is calculated by reading scales on the photosensitive display screen at intervals.
7. And after one group of data is measured, opening the valve J to enable the fluid in the U-shaped pipe to flow out, and after the valve J is closed, measuring the next group of data.
8. And ensuring that the number of the measurement groups of one rock core is 4, stopping rotating the box body 2 after the measurement is finished, closing the nitrogen cylinder 1 to unload the hole pressure, rotating the confining pressure pump 9 to unload the confining pressure, taking out the rock core from the rock core holder 3, closing the liquid discharge valve J, and finally closing the light source 5 and the computer 8.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of modifications or replacements within the technical scope of the present invention, and all shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, but the present invention is not limited to the above embodiments, and any person skilled in the art can make equivalent embodiments with a few modifications or changes as equivalent changes without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (3)
1. An injection water permeability injury evaluation experimental device mainly comprises: nitrogen cylinder (1), box (2), rock core holder (3), measurement display (7), computer (8) its characterized in that: the box body (2) is connected with the rock core holder (3) through a pipeline and is controlled by a switch (D) and a tee joint (E); the nitrogen cylinder (1) is connected with the tank body (2) through a pipeline, and the pipeline is controlled by the switches (A) and (C) and is connected with the pressure gauge (B); the outlet of the core holder (3) is connected with a U-shaped pipe (4), the U-shaped pipe (4) is connected with a measuring cylinder (6) through a pipeline in a downward connection mode and is controlled by a switch (J); in addition, the three-way valve (E) is connected with a pressure gauge (H), the box body (2) and the core holder (3) are connected with heating devices (F) and (I), the core holder (3) is connected with a confining pressure pump (8) and a pressure gauge (G), and the control is realized through a switch (Q)
2. The experimental device for injury evaluation of permeability of injected water according to claim 1, wherein: the box body (2) is a transparent glass product, the interior of the box body is composed of three glass containers with different specifications, one end of each of the valve (K), the valve (L), the valve (M), the valve (N), the valve (O) and the valve (P) is connected to an air supply system, the upper end of each of the valve (C) and the valve (D) is connected to the upper end of the box body, and the other end of each of the valve (K), the valve (L), the valve (M), the valve (N), the valve (O) and the valve (P) is connected to a pipeline of the rock core holder (3). In addition, the box body (2) is also externally connected with a heating device (F) and can simulate the stratum condition.
3. The experimental device for injury evaluation of permeability of injected water according to claim 1, wherein: the metering system mainly comprises a U-shaped pipe (4), a light source (5), a measuring cylinder (6), a metering display (7) and a computer (8), wherein the U-shaped pipe is connected with an emptying valve (J) and discharges fluid to the measuring cylinder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120848856.XU CN214997619U (en) | 2021-04-23 | 2021-04-23 | Injury evaluation experimental device for permeability of injected water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120848856.XU CN214997619U (en) | 2021-04-23 | 2021-04-23 | Injury evaluation experimental device for permeability of injected water |
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| Publication Number | Publication Date |
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| CN214997619U true CN214997619U (en) | 2021-12-03 |
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| CN202120848856.XU Active CN214997619U (en) | 2021-04-23 | 2021-04-23 | Injury evaluation experimental device for permeability of injected water |
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2021
- 2021-04-23 CN CN202120848856.XU patent/CN214997619U/en active Active
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