CN106769769B - Rock pressurization imbibition device - Google Patents
Rock pressurization imbibition device Download PDFInfo
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- CN106769769B CN106769769B CN201710006804.6A CN201710006804A CN106769769B CN 106769769 B CN106769769 B CN 106769769B CN 201710006804 A CN201710006804 A CN 201710006804A CN 106769769 B CN106769769 B CN 106769769B
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- shell
- hydraulic oil
- rock
- annular tooth
- oil cylinders
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- 239000011435 rock Substances 0.000 title claims abstract description 41
- 238000005213 imbibition Methods 0.000 title claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 34
- 210000000078 claw Anatomy 0.000 claims abstract description 33
- 239000003921 oil Substances 0.000 claims abstract description 19
- 230000008595 infiltration Effects 0.000 claims abstract description 8
- 238000001764 infiltration Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000009715 pressure infiltration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a rock pressurizing and infiltrating device, which is characterized in that: the device comprises a pressurizing device, a water supply system, a base and a shell arranged on the base; the pressurizing device comprises an oil pump arranged on the base, the oil pump is connected with a plurality of hydraulic oil cylinders arranged at intervals on two ends and side walls of the shell through pipelines, each hydraulic oil cylinder is provided with a push rod, the hydraulic oil cylinders on the side walls of the shell are connected with annular tooth claws used for fixing a columnar rock cylinder through the push rods, the annular tooth claws are arranged in the shell, and the hydraulic oil cylinders on two ends of the shell are respectively connected with pressing plates used for fixing two ends of the columnar rock through the push rods; the water supply system comprises an infiltration suction net and a plurality of water inlet pipes, the annular tooth claw and the inner wall of the pressing plate are respectively connected with the tail ends of the water inlet pipes, and the infiltration suction net is arranged on the inner side of the annular tooth claw.
Description
Technical Field
The invention relates to a rock pressurizing and infiltrating device.
Background
Imbibition is the process by which a porous medium spontaneously imbibes some wetting phase fluid while displacing a non-wetting phase fluid. In recent years, one of the main future exploitation targets is low permeability reservoirs due to increasing energy demand and decreasing recoverable reserves of conventional oil and gas resources year by year. The low-permeability oil reservoir has a fracture system, and due to the imbibition effect, the water can replace and displace the crude oil in the matrix rock block into the fracture system, so that the imbibition effect determines the productivity of the oil reservoir, therefore, the simulation of stratum imbibition under the stratum condition in a laboratory has very important guiding significance for improving the recovery ratio of the low-permeability oil reservoir.
The test condition of the prior imbibition dynamic measuring device is usually normal pressure, and the stress in each direction is difficult to change. However, for an actual oil reservoir, the capillary pressure-dominated imbibition oil displacement environment is a high-pressure environment, and the capillary pressure changes in different directions, so the result obtained by these imbibition dynamic measurement devices cannot truly reflect the imbibition dynamics of the actual oil reservoir.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a rock pressure infiltration apparatus capable of applying variable pressure to the circumferential direction and the axial direction of a rock.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a rock pressurization imbibition device which characterized in that: the device comprises a pressurizing device, a water supply system, a base and a shell arranged on the base; the pressurizing device comprises an oil pump arranged on the base, the oil pump is connected with a plurality of hydraulic oil cylinders arranged at intervals on two ends and side walls of the shell through pipelines, each hydraulic oil cylinder is provided with a push rod, the hydraulic oil cylinders on the side walls of the shell are connected with annular tooth claws used for fixing a columnar rock cylinder through the push rods, the annular tooth claws are arranged in the shell, and the hydraulic oil cylinders on two ends of the shell are respectively connected with pressing plates used for fixing two ends of the columnar rock through the push rods; the water supply system comprises an infiltration suction net and a plurality of water inlet pipes, the annular tooth claw and the inner wall of the pressing plate are respectively connected with the tail ends of the water inlet pipes, and the infiltration suction net is arranged on the inner side of the annular tooth claw.
The number of the annular tooth claws is four, the annular tooth claws are distributed in four directions of the front, the rear, the left and the right of the inner side of the shell, and each annular tooth claw is in an arc shape; each annular tooth claw is fixedly connected with the hydraulic oil cylinder on the side wall of the corresponding side of the shell through the push rod.
The shell is arranged in a square shape, and the number of the hydraulic oil cylinders on the peripheral side walls of the shell is respectively equal and is one or more.
And a drain pipe is arranged at the bottom of the annular tooth claw.
The starting end of each water inlet pipe is connected with a water tank, and the water tank is arranged above the hydraulic oil cylinder at the top end of the shell.
The number of the hydraulic oil cylinders positioned at the top end and the bottom end of the shell is equal.
The number of the hydraulic oil cylinders positioned at the top end and the bottom end of the shell is one or more.
Each water inlet pipe is provided with a flowmeter and a water valve at intervals.
The base includes the platform, the oil pump with the equal fastening connection of casing is in the top of platform the bottom of platform is provided with the supporting leg post.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the invention is provided with the pressurizing device, the pressurizing device comprises a plurality of hydraulic oil cylinders which are arranged at two ends and on the side wall of the shell at intervals, the annular and axial pressurizing can be rapidly realized on rocks made of different materials, and the pressure can be adjusted. 2. The invention is provided with four annular tooth claws which are distributed in four directions of the front, the back, the left and the right at the inner side of the shell, each annular tooth claw is fixedly connected with a hydraulic oil cylinder positioned on the side wall of the corresponding side of the shell through a push rod, the shell is arranged in a square shape, the number of the hydraulic oil cylinders positioned on each side wall of the shell is respectively equal and is one or more, the circumferential synchronous uniform compression of rocks can be ensured, and the stability of the invention is good. 3. The hydraulic cylinders at the two ends of the shell are respectively connected with the pressing plates for fixing the two ends of the columnar rock through the push rods, and the number of the hydraulic cylinders at the top end and the bottom end of the shell is equal, can be one or more, so that the rock can be axially, synchronously and uniformly pressed, and the stability of the device is further improved. 4. According to the invention, the flow meter and the water valve are arranged on each water inlet pipe at intervals, the flow meter can rapidly and accurately detect the water supply system, and the water valve can control the water supply amount and the flow rate of the columnar rock at different positions. 5. The water tank is arranged above the hydraulic oil cylinder at the top end of the shell, water can be supplied through the self weight of water, and the water tank is convenient to use.
Drawings
FIG. 1 is a schematic perspective view of the present invention
FIG. 2 is a schematic cross-sectional view of the present invention
FIG. 3 is a schematic view showing the structure of the water supply system of the present invention
FIG. 4 is a schematic view of the construction of the imbibition net of the invention
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in figures 1-3, the rock pressurizing and imbibing device provided by the invention comprises a pressurizing device 1, a water supply system 2, a base 3 and a shell 4 arranged on the base 3. The pressurizing device 1 comprises an oil pump 11 arranged on the base 3, the oil pump 11 is connected with a plurality of hydraulic oil cylinders 12 arranged at intervals on the two ends and the side wall of the shell 4 through pipelines (not shown in the figure), and each hydraulic oil cylinder 12 is provided with a push rod 121. The hydraulic oil cylinder 12 on the side wall of the shell 4 is connected with a circular tooth claw 13 for fixing the column body of the columnar rock 5 through a push rod 121, and the circular tooth claw 13 is positioned in the shell 4 so as to facilitate the columnar rock 5 to realize circumferential compression. The hydraulic oil cylinders 12 at the two ends of the shell 4 are respectively connected with the pressing plates 14 for fixing the two ends of the columnar rock 5 through the push rods 121, so that the columnar rock 5 is axially pressed. The water supply system 2 comprises a wicking net 21 (shown in fig. 4) and a plurality of water inlet pipes 22. The inner walls of the annular tooth claw 13 and the pressure plate 14 are respectively connected with the tail end of the water inlet pipe 22. The infiltration suction net 21 is provided inside the circumferential claw 13, and water can be supplied to the columnar rock 5 through the gap of the infiltration suction net 23.
In the above embodiment, the number of the circumferential claws 13 is four, and the circumferential claws 13 are distributed in four directions, namely, the front direction, the rear direction, the left direction and the right direction, inside the shell 4, and each circumferential claw 13 is arc-shaped and can be completely buckled on the outer wall of the column of the columnar rock 5. Each annular jaw 13 is fixedly connected to a hydraulic ram 12 located on a respective side wall of the housing 4 by a push rod 121.
In the above embodiment, the housing 4 may be set to be square, the number of the hydraulic cylinders 12 on each side wall of the housing 4 is equal and one or more, and it can be ensured that the rock 4 is pressed uniformly and synchronously in the circumferential direction.
In the above embodiment, a drain pipe 23 is provided in the bottom of the circumferential claw 13 for draining water not absorbed by the columnar rock 5.
In the above embodiment, the beginning of each inlet pipe 22 is connected to the water tank 24. The water tank 24 is provided above the hydraulic cylinder 12 at the top end of the housing 4, and can supply water by the weight of the water.
In the above embodiment, the number of the hydraulic cylinders 12 at the top end and the bottom end of the housing 4 is equal, and may be one or multiple, so as to ensure that the rock 4 is axially, synchronously and uniformly pressed.
In the above embodiment, as shown in fig. 3, a flow meter 25 and a water valve 26 are arranged on each water inlet pipe 22 at intervals, the flow meter 25 can detect the water supply system 2 quickly and accurately, and the water valve 26 can control the water supply amount and flow rate of the columnar rock 5 at different positions.
In the above embodiment, as shown in fig. 1 and 2, the base 3 includes a platform 31, the oil pump 11 and the housing 4 are both fastened to the top of the platform 31, and a support leg 32 is disposed at the bottom of the platform 31.
As shown in figures 1 and 2, when the invention is used, each hydraulic oil cylinder 12 is controlled by the oil pump 11, the annular tooth claw 13 is opened by the hydraulic oil cylinders 12 positioned on the peripheral side walls of the shell 4, the columnar rock 5 is placed in the cavity of the shell 4, and then each hydraulic oil cylinder 12 is pressurized, so that the annular and axial simultaneous stress of the columnar rock 5 can be realized. Meanwhile, the pressure of the columnar rock 5 in each direction can be adjusted by utilizing each hydraulic oil cylinder 12 so as to meet the experimental requirements. After the pressing is finished, the columnar rock 5 is supplied with water in all directions through the water valve 26, and at the same time, the water consumption is detected through the flow meter 25, so that the water seepage capability of the columnar rock 5 when being pressed is detected (as shown in fig. 3).
The above embodiments are only used for illustrating the present invention, and the structure, connection mode and the like of each component can be changed, and all equivalent changes and improvements made on the basis of the technical scheme of the present invention should not be excluded from the protection scope of the present invention.
Claims (7)
1. The utility model provides a rock pressurization imbibition device which characterized in that: the device comprises a pressurizing device, a water supply system, a base and a shell arranged on the base; the pressurizing device comprises an oil pump arranged on the base, the oil pump is connected with a plurality of hydraulic oil cylinders arranged at intervals on two ends and side walls of the shell through pipelines, each hydraulic oil cylinder is provided with a push rod, the hydraulic oil cylinders on the side walls of the shell are connected with annular tooth claws used for fixing a columnar rock cylinder through the push rods, the annular tooth claws are arranged in the shell, and the hydraulic oil cylinders on two ends of the shell are respectively connected with pressing plates used for fixing two ends of the columnar rock through the push rods; the water supply system comprises an infiltration and suction net and a plurality of water inlet pipes, the inner walls of the annular claw and the pressure plate are respectively connected with the tail ends of the water inlet pipes, and the infiltration and suction net is arranged on the inner side of the annular claw teeth; a drain pipe is arranged at the bottom of the annular tooth claw;
the number of the annular tooth claws is four, the annular tooth claws are distributed in four directions of the front, the rear, the left and the right of the inner side of the shell, and each annular tooth claw is in an arc shape; each annular tooth claw is fixedly connected with the hydraulic oil cylinder on the side wall of the corresponding side of the shell through the push rod.
2. The pressurized imbibition device of rock of claim 1, wherein: the shell is arranged in a square shape, and the number of the hydraulic oil cylinders on the peripheral side walls of the shell is respectively equal and is one or more.
3. The pressurized imbibition device of rock of claim 1, wherein: the starting end of each water inlet pipe is connected with a water tank, and the water tank is arranged above the hydraulic oil cylinder at the top end of the shell.
4. The pressurized imbibition device of rock of claim 1, wherein: the number of the hydraulic oil cylinders positioned at the top end and the bottom end of the shell is equal.
5. The pressurized imbibition device of claim 4, wherein: the number of the hydraulic oil cylinders positioned at the top end and the bottom end of the shell is one or more.
6. The pressurized imbibition device of rock of claim 1, wherein: each water inlet pipe is provided with a flowmeter and a water valve at intervals.
7. The pressurized imbibition device of rock of claim 1, wherein: the base includes the platform, the oil pump with the equal fastening connection of casing is in the top of platform the bottom of platform is provided with the supporting leg post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710006804.6A CN106769769B (en) | 2017-01-05 | 2017-01-05 | Rock pressurization imbibition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710006804.6A CN106769769B (en) | 2017-01-05 | 2017-01-05 | Rock pressurization imbibition device |
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| Publication Number | Publication Date |
|---|---|
| CN106769769A CN106769769A (en) | 2017-05-31 |
| CN106769769B true CN106769769B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710006804.6A Active CN106769769B (en) | 2017-01-05 | 2017-01-05 | Rock pressurization imbibition device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801870B (en) * | 2018-03-26 | 2019-06-14 | 中国石油大学(北京) | The experimental provision and method of reservoir rock imbibition under a kind of analog formation condition |
| CN111521542B (en) * | 2020-06-10 | 2021-08-24 | 东北石油大学 | Visual imbibition experimental apparatus of tight reservoir rock core static pressurization |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6055850A (en) * | 1997-12-24 | 2000-05-02 | Turner; Daniel R. | Multi-directional permeameter |
| EP1242803A1 (en) * | 1999-12-14 | 2002-09-25 | Daniel Turner | Multi-directional permeameter |
| CN104655495B (en) * | 2015-02-13 | 2017-05-10 | 太原理工大学 | High temperature and high pressure coal and rock true triaxial fracturing and seepage test device and test method |
| CN104931403B (en) * | 2015-06-11 | 2018-08-31 | 中国电建集团华东勘测设计研究院有限公司 | Anisotropic rock degree of injury test device and its test method |
| CN105628579B (en) * | 2015-12-21 | 2018-08-21 | 中国石油大学(北京) | A kind of spontaneous imbibition measuring device for shale |
| CN105547849B (en) * | 2016-03-01 | 2018-12-04 | 安徽理工大学 | Large scale stratiform pressure-bearing rock true triaxial adds unloading test device and test method |
| CN205844144U (en) * | 2016-05-11 | 2016-12-28 | 中国石油大学(北京) | A kind of shale adds driving pressure imbibition measurement apparatus |
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