CN220979480U - Visual long rock core sand filling pipe experimental device - Google Patents
Visual long rock core sand filling pipe experimental device Download PDFInfo
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- CN220979480U CN220979480U CN202322920157.3U CN202322920157U CN220979480U CN 220979480 U CN220979480 U CN 220979480U CN 202322920157 U CN202322920157 U CN 202322920157U CN 220979480 U CN220979480 U CN 220979480U
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- 239000004576 sand Substances 0.000 title claims abstract description 66
- 230000000007 visual effect Effects 0.000 title claims abstract description 23
- 239000011435 rock Substances 0.000 title claims description 4
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 239000012530 fluid Substances 0.000 claims description 46
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 52
- 238000004088 simulation Methods 0.000 description 8
- 238000012800 visualization Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses a visual long core sand filling pipe experimental device which comprises a transparent barrel body with an inner annular space, wherein threads at two ends of the transparent barrel body are respectively connected with a left sealing cover and a right connecting cover, a screw plug is sleeved at the center of the right connecting cover through threads, one end of the screw plug stretches into the transparent barrel body, the inner wall of the barrel body with the outer Zhou Touming end part is attached, and pressure measuring interfaces communicated with the annular space are uniformly arranged on the transparent barrel body; and compacting and sealing sand filling models with different lengths in the transparent cylinder by rotating the screw plugs. The pressure measuring interfaces connected with the annular space are uniformly arranged on the transparent cylinder body, so that the pressure change of different core sections of the sand filling model can be monitored at any time, the problems of various types, single function and large experimental error of the conventional sand filling pipe are solved, the structural composition is simplified, and the installation, maintenance and disassembly are also convenient.
Description
Technical Field
The utility model belongs to the technical field of oil reservoir physical simulation oil and gas exploitation seepage experimental equipment, and relates to a visual long core sand filling pipe experimental device.
Background
In the process of oil field development, in order to solve the seepage condition of fluid in a reservoir, a core or a sand filling pipe is generally used, and an oil reservoir physical simulation experiment is carried out indoors, but the experimental result of the smaller-size core or sand filling pipe simulation has a certain limitation on the knowledge of the oil reservoir development process. The experimental long core model is a long model designed aiming at the fact that the displacement contrast effect of the short core is not obvious, and various displacement experiments carried out through the long core model are beneficial to exploring phenomena and rules. The most commonly used long core in the laboratory at present is divided into two types, namely, a demolding short core is connected with a sand filling pipe for filling sand. The long cores formed by connecting the short cores are connected with each other by force due to the fact that the demolding cores are independent individuals, capillary discontinuities exist, macropores exist at the connecting positions, fluid in the long cores cannot be observed, seepage pressure cannot be measured, and the like. Therefore, the method for manufacturing the long core sand-filling model by using the sand-filling pipe experimental device is an important choice for numerous researchers to study the seepage of fluid in the oil reservoir and to develop physical simulation experiments.
At present, many types of sand filling pipes exist on the market, but a great deal of problems exist in the use and manufacturing process of the sand filling pipe model: for example: the sand filling pipe (CN 202926315U, 2013.05.08) of the utility model can only realize partial visualization, and can not observe the seepage condition of fluid in the sand filling pipe: the utility model patent visualization sand filling model pipe (CN 205428308U, 2016.08.03) discloses a visualization sand filling model pipe, and the visualization sand filling model pipe is characterized in that two ends are fixed, the sand filling length is fixed and cannot be regulated and controlled, and the application condition is single; the utility model patent (CN 207829869U, 2018.09.07) discloses a detachable and recyclable visual sand filling pipe model, which realizes the visualization of sand filling and adjustable sand filling length, but only can measure the pressure change after entering and exiting at the two ends of the outer part of the sand filling pipe, and has slightly complex structure and inconvenient operation; meanwhile, the sand filling length in the sand filling pipe is too long, seepage of fluid is different in different sand filling sections or time, and the seepage pressure change caused by the different seepage is required to be effectively monitored; the end diversion trenches of part of the common sand filling pipe are clung to the quartz sand, or only one layer of filter screen is arranged between the end diversion trenches, which is not beneficial to diversion of fluid, and is easy to cause end effect of the core model, and experimental error is larger.
Disclosure of utility model
The utility model aims to provide a visual long core sand filling pipe experimental device, which solves the problems of various types, single function and large experimental error of the existing sand filling pipe.
The technical scheme includes that the visual long core sand filling pipe experimental device comprises a transparent barrel body with an inner annular space, a left sealing cover and a right connecting cover are respectively connected with threads at two ends of the transparent barrel body, a screw plug is sleeved at the center thread of the right connecting cover, one end of the screw plug extends into the transparent barrel body, the end wall of the screw plug is attached to the inner wall of the transparent barrel body, and pressure measuring interfaces communicated with the annular space are uniformly formed in the transparent barrel body.
The utility model is also characterized in that:
A fluid channel which is communicated with the inside and the outside of the transparent cylinder body is arranged in the left sealing cover; the center of the inside of the left sealing cover is provided with an annular groove and a cross groove, the inner wall of the left sealing cover is provided with an internal thread, and the internal thread is in threaded connection with the outer wall of the end part of the transparent cylinder body.
Circular screens are arranged on the annular grooves and the cross grooves.
The periphery of the screw rod plug is provided with external threads, the external threads are in threaded connection with the right connecting cover, two parallel plug fluid channels are arranged in the screw rod plug, one end of the screw rod plug, which is positioned in the transparent cylinder, is provided with an annular and cross fluid groove, and the annular and cross fluid groove is communicated with the plug fluid channels.
Circular screens are arranged outside the annular and cross-shaped fluid grooves.
The outer wall of the transparent cylinder is axially provided with model volume graduation marks.
A filter screen is placed in the pressure measuring interface, a rubber sealing gasket is arranged between the left sealing cover and the transparent cylinder, and a square handle is fixedly connected to one end of the screw plug, which is positioned outside the transparent cylinder.
The connecting cover is of a hollow boss structure, a second internal thread is arranged on the inner wall of the upper half part of the boss, the second internal thread is in threaded connection with the periphery of the plug thread, a first internal thread is arranged on the inner wall of the lower half part of the boss, and the first internal thread is connected with the end part of the transparent cylinder body.
Sealing rings are arranged between the screw plugs and the inner wall of the transparent cylinder.
The screw plug is located the one end periphery in the transparent cylinder and has offered sealing washer annular groove along circumference, and the sealing washer is located the sealing washer annular groove.
The beneficial effects of the utility model are as follows:
According to the visual long core sand filling pipe experimental device, the visualization of a physical simulation experiment is realized by the barrel; the screw plug and the right sealing cover are used, and the screw plug is controllably adjusted to seal the compacted sand body according to the requirement of the experimental sand filling length; the left sealing cover and the screw plug are both provided with fluid annular and cross grooves in the cylinder, so that the flow guide of experimental fluid is facilitated, and the end face effect of the core is avoided; in addition, evenly be provided with the pressure measurement interface on the barrel, the convenience is to the monitoring of filling sand model fluid seepage flow pressure, has solved current sand filling pipe variety, single function, the big problem of experimental error, has simplified the structure simultaneously and has constituteed, also easy to assemble, maintenance and dismantlement.
Drawings
FIG. 1 is a schematic structural diagram of a visual long core sand-filling pipe experimental device;
FIG. 2 is a schematic view of the structure of a transparent cylinder in the experimental apparatus of the present utility model;
FIG. 3 is a schematic view of the structure of a screw plug in the experimental apparatus of the present utility model;
FIG. 4 is a schematic view of the structure of the left seal cover in the experimental apparatus of the present utility model;
fig. 5 is a schematic view of the structure of the right connection cover in the experimental apparatus of the present utility model.
In the figure, 1, a transparent cylinder, 1-1, a pressure measuring interface, 1-2, and a model volume scale mark; 2. the left seal cover, 2-1, the fluid channel, 2-2, the annular and cross grooves, 2-3, the internal thread; 3. the right connecting cover is 3-1, a first internal thread and a second internal thread; 4. screw plug, 4-1, plug fluid channel, 4-2, annular and cross fluid groove, 4-3, sealing ring annular groove, 4-4, plug thread, 4-5, square handle; 5. rubber sealing gasket, sealing ring, circular screen, and filter screen.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The visual long core sand filling pipe experimental device has the structure shown in fig. 1 and 2, and comprises a transparent cylinder body 1, a left sealing cover 2, a right connecting cover 3, a screw plug 4, a sealing ring 6, a rubber sealing gasket 5, a circular screen 7 and a filter screen 8, wherein the transparent cylinder body 1 is a cylindrical cylinder body with an inner annulus, the transparent cylinder body is made of organic transparent glass, a sand filling cavity is formed in the hollow inside smoothly, external threads are arranged on the outer walls of the left end and the right end of the transparent cylinder body 1, pressure measuring interfaces 1-1 communicated with the annulus are uniformly arranged on the outer walls of the transparent cylinder body 1, the filter screen 8 is arranged in the pressure measuring interfaces 1-1, experimental sand is put in from the pressure measuring interfaces 1-1, the surface of the middle outer wall of the transparent cylinder body 1 is provided with a standardized model volume scale mark 1-2, the sand filling amount can be calculated according to experimental needs and the experimental sand filling amount after compression, and pressure measuring equipment is connected on the pressure measuring interfaces 1-1, so that the monitoring of fluid seepage pressure in a sand filling model is facilitated.
As shown in fig. 1 and 4, a fluid channel 2-1 for communicating the inside and the outside of the transparent cylinder 1 is arranged in the left sealing cover 2; the center of the inside of the left sealing cover 2 is provided with an annular groove 2-2 and a cross groove, which is beneficial to diversion of experimental fluid and avoids the end face effect of a rock core, the inner wall of the left sealing cover 2 is provided with an internal thread 2-3, and the internal thread 2-3 is matched with an external thread at the left end of the transparent cylinder body 1. Circular screens 7 are arranged on the annular and cross grooves 2-2.
As shown in fig. 1 and 5: the right connecting cover 3 is of a hollow boss structure, a second internal thread 3-2 is arranged on the inner wall of the upper half part of the boss, a first internal thread 3-1 is arranged on the inner wall of the lower half part of the boss, and the first internal thread 3-1 is in threaded connection with the outer wall of the right end of the transparent cylinder body 1.
As shown in fig. 1 and 3, one end of a screw plug 4 extends into a transparent cylinder 1, the outer wall of the end is attached to the inner wall of the transparent cylinder 1, a sealing ring annular groove 4-3 is formed in the outer wall of the end along the circumferential direction, a sealing ring 6 is arranged in the sealing ring annular groove 4-3, a square handle 4-5 is fixedly connected to the other end of the screw plug 4, plug threads 4-4 are formed in the periphery of the screw plug 4, the plug threads 4-4 are matched with a second internal thread 3-2, two parallel plug fluid channels 4-1 are formed in the screw plug 4, an annular and cross fluid groove 4-2 is formed in one end of the screw plug 4, which is positioned in the transparent cylinder 1, the plug fluid channels 4-1 are communicated with the annular and cross fluid grooves 4-2, so that the flow guiding of experimental fluid is facilitated, the end face effect of a core is avoided, one plug fluid channel 4-1 is connected with an external pipeline, the other plug fluid channel 4-1 is vented during experiments, and the experimental fluid channel and the experimental pipeline can be emptied, and errors are reduced; outside the annular and cross-shaped fluid grooves 4-2 are circular screens 7.
The visual long core sand filling pipe experimental device provided by the utility model has the working flow:
As shown in fig. 1 and 4, a rubber sealing gasket 5 is placed in a left sealing cover 2, a circular screen 7 is placed on a fluid channel 2-1 and an annular and cross-shaped groove 2-2 which are arranged on the left sealing cover 2, then an internal thread 2-3 in the left sealing cover 2 and an external thread on the outer wall of the left end of a transparent cylinder 1 are mutually matched and rotated to be screwed up, and the internal thread is in sealing connection with the left end of the transparent cylinder 1 to form a connector; the method comprises the steps of erecting a connector consisting of a transparent cylinder body 1 and a left sealing cover 2, enabling the right end to face upwards, filling experimental sand bodies required by physical simulation experiments in a sand filling cavity formed in the hollow of the transparent cylinder body 1, slightly vibrating or using a hydraulic press to enable the experimental sand bodies in the sand filling cavity to be uniform and compact, and putting a circular screen 7 into the upper end of the compacted sand bodies; the screw plug 4 penetrates through the second internal thread 3-2, the screw plug 4 and the right connecting cover 3 are connected with each other, two annular grooves 4-3 are formed in the periphery of the left end of the screw plug 4 along the circumferential direction, a sealing ring 6 is placed in each annular groove 4-3, then the screw plug 4 stretches into the rightmost end of the experimental sand body in the transparent cylinder body 1, the plug fluid channel 4-1, the annular and cross fluid grooves 4-2 on the screw plug 4 are in contact with the circular screen 7, the first internal thread 3-1 arranged on the right connecting cover 3 is connected with the rightmost end external thread of the transparent cylinder body 1, and the right end of the experimental sand body is compacted and sealed by rotating the square handle 4-5 of the screw plug 4.
The visual long core sand filling pipe experimental device provided by the utility model has the advantages that: the visualization of physical simulation experiments is realized by using the transparent cylinder 1, the screw plug 4 and the right connecting cover 3 are matched, the screw plug 4 is controlled to seal and compact the sand body according to the requirement of experimental sand filling length, the pressure measuring interface 1-1 for connecting annular space is uniformly arranged on the transparent cylinder 1, the pressure change of different core sections and time fluid of a sand filling model in the sand filling long pipe is monitored at any time, the physical simulation of core oil reservoirs with various lengths is conveniently carried out, the defects of various types, single function and large experimental error of the existing sand filling pipe are overcome, the structural composition is simplified, and the installation, maintenance and disassembly are also facilitated.
Example 1
The visual long core sand filling pipe experimental device comprises a transparent barrel body 1 of an inner annular space, wherein threads at two ends of the transparent barrel body 1 are respectively connected with a left sealing cover 2 and a right connecting cover 3, a screw plug 4 is sleeved at the center thread of the right connecting cover 3, one end of the screw plug 4 extends into the transparent barrel body 1, the outer wall of the end part is attached to the inner wall of the transparent barrel body 1, and pressure measuring interfaces 1-1 communicated with the annular space are uniformly arranged on the transparent barrel body 1. The outer wall of the transparent cylinder body 1 is axially provided with model volume scale marks 1-2, and a pressure measuring device is connected to the pressure measuring interface 1-1. A filter screen 8 is arranged in the pressure measuring interface 1-1, a rubber sealing gasket 5 is arranged between the left sealing cover 2 and the transparent cylinder 1, and one end of the screw plug 4 outside the transparent cylinder 1 is fixedly connected with a square handle 4-5.
Example 2
On the basis of the embodiment 1, the periphery of the screw plug 4 is provided with plug threads 4-4, the plug threads 4-4 are in threaded connection with the right connecting cover 3, two parallel plug fluid channels 4-1 are arranged in the screw plug 4, one end of the screw plug 4, which is positioned in the transparent cylinder 1, is provided with annular and cross fluid grooves 4-2, and the annular and cross fluid grooves 4-2 are communicated with the plug fluid channels 4-1. Outside the annular and cross-shaped fluid grooves 4-2 are circular screens 7. The periphery of one end of the screw plug 4 positioned in the transparent cylinder body 1 is provided with a sealing ring annular groove 4-3 along the circumferential direction, and the sealing ring 6 is positioned in the sealing ring annular groove 4-3.
Example 3
On the basis of the embodiment 2, a fluid channel 2-1 which is communicated with the inside and the outside of the transparent cylinder body 1 is arranged in the left sealing cover 2; the center of the inside of the left sealing cover 2 is provided with an annular and cross groove 2-2, the inner wall of the left sealing cover 2 is provided with an internal thread 2-3, and the internal thread 2-3 is matched with the external thread at the left end of the transparent cylinder 1. Circular screens 7 are arranged on the annular and cross grooves 2-2.
The connecting cover 3 is of a hollow boss structure, a second internal thread 3-2 is arranged on the inner wall of the upper half part of the boss, the second internal thread 3-2 is connected with a plug thread 4-4 of the screw plug 4, a first internal thread 3-1 is arranged on the inner wall of the lower half part of the boss, and the first internal thread 3-1 is matched with an external thread at the right end of the transparent cylinder body 1.
Claims (10)
1. Visual long rock core sand filling pipe experimental apparatus, its characterized in that, including inside annular space's transparent barrel (1), transparent barrel (1) both ends screw thread is connected with left sealed lid (2), right side respectively and connects lid (3), right side connects lid (3) central screw thread to have cup jointed screw rod end cap (4), screw rod end cap (4) one end stretch into in transparent barrel (1) and tip outer wall with the laminating of the inner wall of transparent barrel (1), evenly offered pressure measurement interface (1-1) of intercommunication annular space on transparent barrel (1).
2. The visual long core sand filling pipe experimental device according to claim 1, wherein a fluid channel (2-1) for communicating the inside and the outside of the transparent cylinder (1) is arranged in the left sealing cover (2); the inner center of the left sealing cover (2) is provided with an annular groove (2-2), the inner wall of the left sealing cover (2) is provided with an internal thread (2-3), and the internal thread (2-3) is in threaded connection with the outer wall of the end part of the transparent cylinder body (1).
3. Visual long core sand filling pipe experimental device according to claim 2, characterized in that circular screen (7) is arranged on the annular and cross-shaped grooves (2-2).
4. The visual long core sand filling pipe experimental device according to claim 1, wherein a plug thread (4-4) is formed on the periphery of the screw plug (4), the plug thread (4-4) is in threaded connection with the right connecting cover (3), two parallel plug fluid channels (4-1) are arranged in the screw plug (4), an annular and cross fluid groove (4-2) is formed in one end of the screw plug (4) located in the transparent cylinder (1), and the annular and cross fluid groove (4-2) is communicated with the plug fluid channels (4-1).
5. The visual long core sand filling pipe experimental device according to claim 4, wherein a circular screen (7) is arranged outside the annular and cross-shaped fluid grooves (4-2).
6. The visual long core sand filling pipe experimental device according to any one of claims 1 to 5, wherein a model volume scale mark (1-2) is arranged on the outer wall of the transparent cylinder (1) along the axial direction, and a pressure measuring device is connected to the pressure measuring interface (1-1).
7. The visual long core sand filling pipe experimental device according to any one of claims 1 to 5, wherein a filter screen (8) is placed in the pressure measuring interface (1-1), a rubber sealing gasket (5) is arranged between the left sealing cover (2) and the transparent cylinder (1), and one end of the screw plug (4) positioned outside the transparent cylinder (1) is fixedly connected with a square handle (4-5).
8. The visual long core sand filling pipe experimental device according to any one of claims 1 to 5, wherein the connecting cover (3) is of a hollow boss structure, a second internal thread (3-2) is arranged on the inner wall of the upper half part of the boss, the second internal thread (3-2) is in threaded connection with the periphery of the screw plug (4), a first internal thread (3-1) is arranged on the inner wall of the lower half part of the boss, and the first internal thread (3-1) is connected with the end part of the transparent barrel (1).
9. The visual long core sand filling pipe experimental device according to any one of claims 1 to 5, wherein sealing rings (6) are arranged between the screw plugs (4) and the inner wall of the transparent cylinder (1).
10. The visual long core sand filling pipe experimental device according to claim 9, wherein a sealing ring annular groove (4-3) is formed in the periphery of one end of the screw plug (4) located in the transparent cylinder body (1) along the circumferential direction, and the sealing ring (6) is located in the sealing ring annular groove (4-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920157.3U CN220979480U (en) | 2023-10-30 | 2023-10-30 | Visual long rock core sand filling pipe experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322920157.3U CN220979480U (en) | 2023-10-30 | 2023-10-30 | Visual long rock core sand filling pipe experimental device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220979480U true CN220979480U (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322920157.3U Active CN220979480U (en) | 2023-10-30 | 2023-10-30 | Visual long rock core sand filling pipe experimental device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220979480U (en) |
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2023
- 2023-10-30 CN CN202322920157.3U patent/CN220979480U/en active Active
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