CN106644672A - Point-contact loosening sandstone core model - Google Patents
Point-contact loosening sandstone core model Download PDFInfo
- Publication number
- CN106644672A CN106644672A CN201710073779.3A CN201710073779A CN106644672A CN 106644672 A CN106644672 A CN 106644672A CN 201710073779 A CN201710073779 A CN 201710073779A CN 106644672 A CN106644672 A CN 106644672A
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- China
- Prior art keywords
- pipe shaft
- fill out
- out sand
- sand
- sand tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 122
- 239000004576 sand Substances 0.000 claims abstract description 86
- 239000006004 Quartz sand Substances 0.000 claims abstract description 16
- 239000011435 rock Substances 0.000 claims description 34
- 238000007906 compression Methods 0.000 claims description 25
- 230000006835 compression Effects 0.000 claims description 25
- 238000010079 rubber tapping Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 abstract description 14
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 235000013339 cereals Nutrition 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention provides a point-contact loosening sandstone core model, comprising a sand filling pipe body, an upper end head, a lower end head, and a pressing pillar; the upper end head and the lower end head are used for sealing the upper end and the lower end of the sand filling pipe body respectively; the pressing pillar is used for filling and pressing quartz sand in the sand pilling pipe; the sand filling pipe body is an integrated structure; the pressing pillar is formed by dismountably and fixedly connecting the bottom pressing block and several upper pressing blocks; the cross section area of the bottom pressing block is more than the cross section area of the upper pressing blocks, and the outside diameter of the bottom pressing block is adapted to the inside diameter of the sand filling pipe body; an air guide channel is arranged on the bottom pressing block, one end opening of the air guide channel is arranged at the bottom face of the bottom pressing block, and the other end opening is arranged at the side face of the bottom pressing block. The point-contact loosening sandstone core model provided by the application is stable in structure and big in pressure bearing scale; the model has full process of pressure application and uniform force application; the design of the pressure testing point is free from injury to the pipe wall, and simple to dismount, and convenient to operate; the flow conductivity of the inlet and outlet is strong relatively.
Description
Technical field
The present invention relates to petroleum works technical field, more particularly to a kind of point contact loose sand core model.
Background technology
Experiment long cores model is a kind of long model substantially not designed for short rock core displacement contrast effect.By length
All kinds of displacement tests that core model is carried out, are conducive to the exploration of phenomenon, rule, but for long cores make, but deposit
In certain difficulty.
At present the most frequently used long cores in laboratory are divided into two kinds, and the short rock core of the demoulding is formed by connecting and formed with fill out sand tube back-up sand.
Wherein, the long cores that short rock core is formed by connecting connect by force due to being single individuality between demoulding rock core itself, there is capillary
Pipe is discontinuous, and junction be present.
The utilization rate of this type rock core is fewer and feweri, and fill out sand tube is without having Similar Problems, but in back-up sand pipe die
In the manufacturing process of type, still there are problems that many：1. fill out sand tube pipe shaft is usually and is made up of three parts, and connection screw thread and two is saved
Isometric pipe shaft, during back-up sand, to make sand grains more be compacted, can using tap tube wall by the way of, so to tube wall injury compared with
For serious, or even distortion, in addition, the tubing string for tamping quartz sand is an overall long column shape structure, also hold during tamping
Easily it is distorted；2. during the back-up sand of sandpipe end, because quartz sand is filled with whole pipe shaft, pressure pipe can be exposed when quartz sand is suppressed
End face, in last pressing process, force will not be too steady, can generally reduce force and ensure to make safety, and this is also resulted in
End section rock core is more loose；3. in order to determine intermediate pressure, pressure tap has been welded at pipe shaft 1/2, the process can be led
Cause tube wall slight deformation；4. the termination guiding gutter of common fill out sand tube is close to quartz sand.Between the only mesh of alternating floor 120 filter screen,
It is unfavorable for water conservancy diversion.
The problems referred to above can produce certain impact to the development of laboratory experiment, be unfavorable for the accuracy tested.
The content of the invention
It is an object of the invention to solve the defect that above-mentioned prior art is present, there is provided a kind of neither to injure fill out sand tube pipe
Body and the contact loose sand core model of the point with good water conservancy diversion.
One kind point contact loose sand core model, including fill out sand tube pipe shaft, upper end, lower end, compression leg；The upper end
Head, lower end are used to close off the top and bottom of fill out sand tube pipe shaft；The compression leg is used to tamp the stone in fill out sand tube pipe shaft
Sand；
The upper end includes enclosing cover and is arranged on the filling at enclosing cover center, and the gap between enclosing cover and filling is fill out sand tube
The tube wall end position of pipe shaft, enclosing cover is fixedly connected with the outer tube wall of the upper end of the sandpipe pipe shaft；The filling insertion
Inside fill out sand tube pipe shaft, and rubber ring is provided with filling；Filling is the pipe circulation road with hollow structure, in the pipe stream
The end of passage has blocked screen pack cake；
The lower end is identical with upper end header structure；
The fill out sand tube pipe shaft is structure as a whole, and the length of fill out sand tube pipe shaft is more than the rock core length for needing to prepare, back-up sand
The difference of pipe pipe shaft length and the rock core length is the stemming length and lower end stemming length sum of lower end；In fill out sand tube pipe
Pressure tap is provided with the tube wall of body, the pressure tap is fixed on pipe shaft by way of thread tapping；
The compression leg is detachably fixed and is connected and composed by bottom briquetting and some sections of upper holder blocks；The bottom briquetting it is transversal
Area is more than the cross-sectional area of upper holder block, and is adapted in the external diameter of bottom briquetting and the internal diameter of the fill out sand tube pipe shaft；Institute
State and be provided with air guide channel on the briquetting of bottom, a port of the air guide channel is arranged on the bottom surface of bottom briquetting, another end
Mouth is arranged on the side of bottom briquetting.
Further, point contact loose sand core model as above, above the bottom briquetting and upper holder block in
The heart is provided with externally threaded connecting pole, and in bottom, briquetting and upper holder block is provided centrally with female groove, institute
State between bottom briquetting and upper holder block and be threadedly coupled with groove by the connecting pole between upper holder block and upper holder block.
Further, point contact loose sand core model as above, the air guide channel adopts 45 ° of inclination angles.
Further, point contact loose sand core model as above, the pressure tap is included by thread tapping
Screw hole that mode is fixed on fill out sand tube pipe shaft and the thread cap being threadedly coupled with the screw hole, the screw hole with fill out
The connection of sandpipe pipe shaft inside, the thread cap is hollow structure, and on the thread cap screen pack has been blocked.
Further, point contact loose sand core model as above, is provided with handle at the top of enclosing cover, this
Through hole is provided with hand, and the through hole is connected with the pipe circulation road inside the filling.
Further, point contact loose sand core model as above, the whole inwall of the fill out sand tube pipe shaft is polishing
Face.
Beneficial effect：
The point contact loose sand core model Stability Analysis of Structures that the application is provided, pressure-bearing scope is big；Pressure overall process, uniformly
Force；The design of pressure tap is to tube wall fanout free region, and dismounting is simple, easy to operate；Import and export flow conductivity stronger.
Description of the drawings
Fig. 1 is the application fill out sand tube pipe shaft and upper and lower termination combining structure schematic diagram；
Fig. 2 is the application upper end structural representation；
Fig. 3 is the application compression leg structural representation；
Fig. 4 is that water surveys permeability curve figure；
Fig. 5 is water drive oil design sketch；
Fig. 6 is pressure tap structural representation.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below the present invention in technical scheme carry out clearly
Chu, it is fully described by, it is clear that described embodiment is a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Figure 1-Figure 3, the point contact loose sand core model that the application is provided, including fill out sand tube pipe shaft 2, upper end
1, lower end 4, compression leg；The upper end 1, lower end 4 are used to close off the top and bottom of fill out sand tube pipe shaft 2；It is described
Compression leg 3 is used to tamp the quartz sand in fill out sand tube pipe shaft 2；
The upper end 1 includes enclosing cover 11 and is arranged on the filling 12 at enclosing cover center, between enclosing cover 11 and filling 12 between
Gap is the tube wall end position of fill out sand tube pipe shaft 2, and enclosing cover 11 is fixed with the outer tube wall of the upper end of the sandpipe pipe shaft 2 and connected
Connect；The filling 12 is inserted in inside fill out sand tube pipe shaft, and is provided with rubber ring 14 in filling 12；Filling 12 is with hollow
The pipe circulation road of structure, in the end of the pipe circulation road screen pack cake 15 has been blocked；
Specifically, it is the pipe circulation road of φ 3 inside the filling 12, the end face of the pipe circulation road is contacted with rock core, is anti-
Only sand body enters pipe circulation road, and screen pack cake 15 has been blocked on the end face of pipe circulation road.Due to upper end 1 it is equal with lower end 4
With pipe circulation road, therefore, not only beneficial to the discharge of gas between the sand grains of back-up sand pipe shaft inside, and, prepare in strip rock core
After good, intake one end water outlet to determine the permeability of rock core by the pipe circulation road one end.
The mesh number of the screen pack cake is 120 mesh, and it is straight with pipe circulation road that the use of screen pack cake avoids rock core sand grains
Contact, flow conductivity is preferable.
The lower end 4 is identical with the structure of upper end 1, and simply both stemming lengths are different；
The fill out sand tube pipe shaft 2 is structure as a whole, and the length of fill out sand tube pipe shaft 2 is filled out more than the rock core length for needing to prepare
The difference of the length of sandpipe pipe shaft 2 and the rock core length is the length of filling 12 and lower end stemming length sum of lower end 4；
Pressure tap 21 is provided with the tube wall of fill out sand tube pipe shaft 2, the pressure tap 21 is consolidated by way of thread tapping
It is scheduled on pipe shaft；
The fill out sand tube pipe shaft 2 is structure as a whole；The compression leg 3 is detachable by bottom briquetting 32 and some sections of upper holder blocks 31
It is fixedly connected composition；The cross-sectional area of the bottom briquetting 32 is more than the cross-sectional area of upper holder block 31, and in bottom briquetting 32
External diameter is adapted with the internal diameter of the fill out sand tube pipe shaft 2；Air guide channel 321 is provided with the bottom briquetting 32, the air guide
The a port of passage 321 is arranged on the bottom surface of bottom briquetting 32, and another port is arranged on the side of bottom briquetting 32.
Specifically, when in use, first lower end 4 is fixed on into the lower end of fill out sand tube pipe shaft 2, then carries out loading quartz
Sand, after often loading the quartz sand of certain mass, is tamped, because compression leg 3 is by bottom briquetting 32 and some sections using compression leg 3
Upper holder block 31 is fixedly connected composition, it is initial load quartz sand and tamped when, the number of the connection of upper holder block 31 is more, with
In fill out sand tube pipe shaft 2 in the continuous uphill process of quartz sand, the upper holder block 31 on compression leg 3 is also constantly dismantled therewith, when having tamped
Bi Hou, the upper end of fill out sand tube pipe shaft 2 is fixed block using upper end 1.
In actual applications, because the length of rock core is fixed 50cm, and fill out sand tube pipe shaft length of the prior art
For 50cm, thus, compression leg can expose the end face of fill out sand tube pipe shaft when quartz sand is suppressed, in last pressing process, compression leg exerts a force
Will not be too steady, can generally reduce force and ensure to make safety, it is more loose that this also has led to end section rock core, and
The overall length of the application fill out sand tube pipe shaft 2 is 60cm, and (7cm in this 10cm in pipe shaft upper end is empty for longer than the length of rock core 10cm
Chamber coincide with the filling of upper end, and the 3cm cavitys of pipe shaft lower end coincide with the filling of lower end), thus, when rock core is suppressed,
Compression leg can just be passed through also has a vertical stable pressure to the end face of rock core, that is to say, that during convenient compacting rock core
Power is made, even if so that rock core its end face for preparing is also that pressure density is roughly the same with the mid portion of rock core, so as to
Avoid compression leg force unstable, the problem for causing rock core end face to be evacuated so that the compacting of end section rock core is more tight.
Further, since filling 12 is contacted with the inside pipe wall of back-up sand pipe shaft, and rubber ring 14 is arranged on the outer of filling 12
Place, rather than be that rubber ring is set on the interior base of upper lid as routine techniques, so that upper and lower end seals are filled out
More preferably, giving full play to can O-ring sealing function for quartz sand effect in sandpipe body.
Further, since compression leg is the long column shape structure of an entirety in prior art, and the length of fill out sand tube pipe shaft is longer,
During tamping using compression leg, compression leg can be made to produce flexural deformation, and if the compression leg of the application be by bottom briquetting 32 and
Dry section upper holder block 31 is fixedly connected composition, therefore, it is unlikely to deform during tamping, and fill out sand tube pipe shaft 2 itself
It is an overall structure, also tube wall will not be damaged by the way of percussion tube wall during back-up sand.
Further, since the air guide channel 321 is provided with compression leg, during quartz sand is tamped, it is possible to will
Gas is discharged by air guide channel 321 between sand grains, and its cross-sectional area of all upper holder blocks 31 of compression leg is less than fill out sand tube pipe shaft 2
Cross-sectional area, therefore, certain gap is just constituted between the outer wall of upper holder block 31 and the inwall of fill out sand tube pipe shaft 2, and between being somebody's turn to do
The outlet of gap and the air guide channel 321, thus, just advantageously between sand grains gas is effectively discharged.
Further, on the basis of point contact loose sand core model as above, this application provides a kind of
The connected mode of bottom briquetting 32 and upper holder block 31, that is, be threadedly coupled, specially：On bottom briquetting 32 and upper holder block 31
It is provided centrally with externally threaded connecting pole 311, in bottom, briquetting 32 and upper holder block 31 is provided centrally with internal thread
Groove, it is described between bottom briquetting 32 and upper holder block 31 and between upper holder block 31 and upper holder block 31 pass through the connecting pole
311 are threadedly coupled with groove.
Specifically, the application compression leg by the bullet for being threaded joint that is 10cm length one by one, can be with
Dismounting, it is to avoid the depression bar for purchasing many different lengths is pressed, material-saving.
Further, on the basis of point contact loose sand core model as above, the air guide channel 321 is adopted
With 45 ° of inclination angles.
Specifically, the application gas passage 321 adopts 45 ° of inclination angles, not only can effectively discharge gas between sand grains, but also
Flour sand can be avoided to fly to alter.
Further, on the basis of point contact loose sand core model as above, dismantle for convenience and take
Take, the top of enclosing cover 11 be provided with handle 13, on the handle 13 through hole is provided with, the through hole with it is described filling 12 inside lead
Chute is connected.
Further, as shown in fig. 6, the pressure tap 21 includes being fixed on fill out sand tube pipe shaft 2 by thread tapping mode
On screw hole 211 and the thread cap 212 that is threadedly coupled with the screw hole 211, the screw hole 211 and fill out sand tube pipe shaft
2 inside connections, the thread cap 212 is hollow structure, and on the thread cap 212 screen pack has been blocked., and with fill out sand tube
It is even to be disposed with three pressure taps.
The various parameters of back-up sand pipe shaft can be measured on the thread cap 212 with install sensor, fill out sand tube is for example measured
Internal pressure；When needing to measure the permeability of rock core, water is passed through to one end of back-up sand pipe shaft, water is after rock core from bottom
Flow out respectively with several pressure taps 21 this described；When need not measuring pressure, the end of thread cap 212 is blocked, it is to avoid
Communicate with the external world.
Specifically, really one space that can place sensor of the pressure tap 21, prior art is by filling out
A through hole is drilled through on sandpipe pipe shaft, the space for then fixing a placement sensor on the through hole by welding earthing mode holds
Device, and during welding, easily make fill out sand tube pipe shaft deform, so as to cause the rock core for preparing to deform, and then
Affect the accuracy of experimental test data；And the application is to drill through through hole on fill out sand tube pipe shaft by way of tapping, then
The mode being threaded connection is fixedly connected the space container of a placement sensor, thus, avoid fill out sand tube pipe shaft sending out
Change shape, so as to the accuracy that also just improve experimental test data relatively.
Described pressure tap is fixed on by the way of thread tapping on pipe shaft, internal diameter 2mm, easy to disassemble, replacing, is adopted
It is preferable with "O"-ring sealing effectiveness.The 1/4 of back-up sand pipe shaft, pressure tap has been disposed at 1/2,3/4 respectively.
The whole internal polishing of the fill out sand tube pipe shaft of the application, such that it is able to promote contact of the tube wall with quartz sand particle, on
End has been reserved 70mm and has been arranged in pairs or groups with long termination, and when not installing termination, having more part can make the depression bar that rock core is tamped in rock core end
Keep vertical, 30mm has been reserved in lower end.
The present invention is further illustrated below by embodiment：
Embodiment：
(1) assembling of the model is carried out：
1. O-ring is put, coating lubricating oil installs screen membrane and annulus pinhole disk, lower end is installed into pipe shaft, screws
Be screwed lower end；
2. pressure tap is blocked using plug；
(2) back-up sand operation is carried out.General back-up sand in five times, is respectively filled in every time the quartz sand of 80g different meshes, using shaking
Dynamic device vibrates 20s, with compression leg constant pressure 5 minutes after, again back-up sand, vibration, suppress, rock core face 2cm is higher by for the last time
Apply swaging operation (test of many times result shows to have more what 2cm sand bodies were tamped, just makes rock core length be 50cm), using corresponding
Compacting tool set 25MPa constant pressures 5 minutes, after being finally putting into long termination constant pressure 5MPa, carry out die assembly shaping, are named as A pipes.
(3) horizontal valve, snap joint, tail pipe etc. are dosed in two ends, determine rock core entirety dry weight M1.
(4) Related Experimental Study is carried out：Carry out water and survey permeability experiment, connect experiment flow, determine water and survey permeability K,
As shown in Figure 4.
(5) saturation crude oil, saturation crude oil 70mPas, flow velocity 0.1mL/min, 0.2mL/ by the way of unsteady flow speed
Min, 0.5mL/min, 1mL/min distinguish saturation 12h, 4h, 4h, 1h.Calculate crude oil saturation degree, and aging 2d.
(6) flood pot test is carried out, using flow velocity 1mL/min displacement crude oil, observation displacement dynamic, Fig. 5 is seen.Experimental result
Show, long cores model sealing is good, can preferably simulate displacement test, simulation effect is pretty good, can reach indoor real
Test requirement.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (6)
1. a kind of point contacts loose sand core model, it is characterised in that including fill out sand tube pipe shaft (2), upper end (1), lower end
Head (4), compression leg；The upper end (1), lower end (4) are for closing off the top and bottom of fill out sand tube pipe shaft (2)；It is described
Compression leg (3) is for tamping the quartz sand in fill out sand tube pipe shaft (2)；
The upper end (1) is including enclosing cover (11) and is arranged on the filling (12) at enclosing cover center, enclosing cover (11) and filling (12) it
Between gap for fill out sand tube pipe shaft (2) tube wall end position, enclosing cover (11) and the upper end of the sandpipe pipe shaft (2) it is outer
Tube wall is fixedly connected；The filling (12) is inserted in inside fill out sand tube pipe shaft, and is provided with rubber ring (14) in filling (12)；
Filling (12) is the pipe circulation road with hollow structure, and in the end of the pipe circulation road screen pack cake (15) has been blocked；
The lower end (4) is identical with upper end (1) structure；
The fill out sand tube pipe shaft (2) is structure as a whole, and the length of fill out sand tube pipe shaft (2) is filled out more than the rock core length for needing to prepare
The difference of sandpipe pipe shaft (2) length and the rock core length for lower end (4) filling (12) length and lower end stemming length it
With；Pressure tap (21) is provided with the tube wall of fill out sand tube pipe shaft (2), the pressure tap (21) is consolidated by way of thread tapping
It is scheduled on pipe shaft；
The compression leg (3) is detachably fixed and is connected and composed by bottom briquetting (32) and some sections of upper holder blocks (31)；The bottom pressure
The cross-sectional area of block (32) is more than the cross-sectional area of upper holder block (31), and in the external diameter and the fill out sand tube pipe of bottom briquetting (32)
The internal diameter of body (2) is adapted；Air guide channel (321) is provided with the bottom briquetting (32), the one of the air guide channel (321)
Individual port is arranged on the bottom surface of bottom briquetting (32), and another port is arranged on the side of bottom briquetting (32).
2. point contact loose sand core model according to claim 1, it is characterised in that the briquetting (32) and upper in bottom
Briquetting (31) being provided centrally with externally threaded connecting pole (311) above, briquetting (32) and upper holder block (31) in bottom
Be provided centrally with female groove, it is described between bottom briquetting (32) and upper holder block (31) and upper holder block (31) with
It is threadedly coupled with groove by the connecting pole (311) between upper holder block (31).
3. point according to claim 1 contacts loose sand core model, it is characterised in that the air guide channel (321)
Using 45 ° of inclination angles.
4. point according to claim 1 contacts loose sand core model, it is characterised in that the pressure tap (21) includes
Screw hole (211) on fill out sand tube pipe shaft (2) is fixed on by thread tapping mode and is connected with the screw hole (211) screw thread
The thread cap (212) for connecing, the screw hole (211) connects with inside fill out sand tube pipe shaft (2), and the thread cap (212) is hollow
Structure, on the thread cap (212) screen pack has been blocked.
5. point according to claim 1 contacts loose sand core model, it is characterised in that set at the top of enclosing cover (11)
Handle (13) is equipped with, on the handle (13) through hole is provided with, the through hole pipe circulation road internal with the filling (12) is connected.
6. point according to claim 1 contacts loose sand core model, it is characterised in that fill out sand tube (2) pipe shaft
Whole inwall is buffed surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710073779.3A CN106644672A (en) | 2017-02-10 | 2017-02-10 | Point-contact loosening sandstone core model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710073779.3A CN106644672A (en) | 2017-02-10 | 2017-02-10 | Point-contact loosening sandstone core model |
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| Publication Number | Publication Date |
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| CN106644672A true CN106644672A (en) | 2017-05-10 |
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ID=58845352
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| CN201710073779.3A Pending CN106644672A (en) | 2017-02-10 | 2017-02-10 | Point-contact loosening sandstone core model |
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950503A (en) * | 2010-10-11 | 2011-01-19 | 山东大学 | Layered disassembling compacting experimental device for manufacturing geomechanical model |
| CN102011578A (en) * | 2010-09-08 | 2011-04-13 | 中国海洋石油总公司 | Oil reservoir sand production simulation sand filling experiment device |
| CN102707032A (en) * | 2012-05-17 | 2012-10-03 | 中国石油天然气股份有限公司 | Three-axial rock core holding unit |
| CN203045939U (en) * | 2012-12-10 | 2013-07-10 | 中国石油大学(华东) | Annulated-column-shaped corestone preparing device |
| CN204032340U (en) * | 2014-07-04 | 2014-12-24 | 厦门烟草工业有限责任公司 | A kind of pneumatic compaction device of pipe tobacco packaging system and pipe tobacco packaging system |
| CN204718854U (en) * | 2015-05-08 | 2015-10-21 | 中国石油大学(北京) | A kind of mould suppressing artificial rock core sample |
| CN105201470A (en) * | 2015-09-24 | 2015-12-30 | 中国石油大学(华东) | Heterogeneous single sand-filled pipe core model and filling method thereof |
| CN105223122A (en) * | 2015-10-30 | 2016-01-06 | 南通市飞宇石油科技开发有限公司 | A kind of bolt-type core holding unit |
| CN105239978A (en) * | 2015-10-30 | 2016-01-13 | 南通市飞宇石油科技开发有限公司 | Sand filling model pipe |
| CN205139137U (en) * | 2015-11-26 | 2016-04-06 | 西南石油大学 | Taper thread high pressure rock core holder |
| CN105601169A (en) * | 2015-12-16 | 2016-05-25 | 中国石油大学(北京) | Production method of hot-pressing-based kerogen-containing shale physical model and shale model |
| WO2016078165A1 (en) * | 2014-11-20 | 2016-05-26 | 中国科学院广州能源研究所 | Simulation apparatus for natural gas hydrate formation drilling |
| CN105784559A (en) * | 2016-03-03 | 2016-07-20 | 山东科技大学 | True triaxial fluid-structure interaction coal body seepage test device |
| CN105842425A (en) * | 2016-05-23 | 2016-08-10 | 青岛中瑞泰软控技术有限公司 | Core holding unit and dynamic filtrate loss test unit |
| CN106053317A (en) * | 2016-06-13 | 2016-10-26 | 同济大学 | Unsaturated garbage soil bidirectional gas permeability coefficient determinator |
| CN206546288U (en) * | 2017-02-10 | 2017-10-10 | 西南石油大学 | One kind point contact loose sand core model |
-
2017
- 2017-02-10 CN CN201710073779.3A patent/CN106644672A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011578A (en) * | 2010-09-08 | 2011-04-13 | 中国海洋石油总公司 | Oil reservoir sand production simulation sand filling experiment device |
| CN101950503A (en) * | 2010-10-11 | 2011-01-19 | 山东大学 | Layered disassembling compacting experimental device for manufacturing geomechanical model |
| CN102707032A (en) * | 2012-05-17 | 2012-10-03 | 中国石油天然气股份有限公司 | Three-axial rock core holding unit |
| CN203045939U (en) * | 2012-12-10 | 2013-07-10 | 中国石油大学(华东) | Annulated-column-shaped corestone preparing device |
| CN204032340U (en) * | 2014-07-04 | 2014-12-24 | 厦门烟草工业有限责任公司 | A kind of pneumatic compaction device of pipe tobacco packaging system and pipe tobacco packaging system |
| WO2016078165A1 (en) * | 2014-11-20 | 2016-05-26 | 中国科学院广州能源研究所 | Simulation apparatus for natural gas hydrate formation drilling |
| CN204718854U (en) * | 2015-05-08 | 2015-10-21 | 中国石油大学(北京) | A kind of mould suppressing artificial rock core sample |
| CN105201470A (en) * | 2015-09-24 | 2015-12-30 | 中国石油大学(华东) | Heterogeneous single sand-filled pipe core model and filling method thereof |
| CN105239978A (en) * | 2015-10-30 | 2016-01-13 | 南通市飞宇石油科技开发有限公司 | Sand filling model pipe |
| CN105223122A (en) * | 2015-10-30 | 2016-01-06 | 南通市飞宇石油科技开发有限公司 | A kind of bolt-type core holding unit |
| CN205139137U (en) * | 2015-11-26 | 2016-04-06 | 西南石油大学 | Taper thread high pressure rock core holder |
| CN105601169A (en) * | 2015-12-16 | 2016-05-25 | 中国石油大学(北京) | Production method of hot-pressing-based kerogen-containing shale physical model and shale model |
| CN105784559A (en) * | 2016-03-03 | 2016-07-20 | 山东科技大学 | True triaxial fluid-structure interaction coal body seepage test device |
| CN105842425A (en) * | 2016-05-23 | 2016-08-10 | 青岛中瑞泰软控技术有限公司 | Core holding unit and dynamic filtrate loss test unit |
| CN106053317A (en) * | 2016-06-13 | 2016-10-26 | 同济大学 | Unsaturated garbage soil bidirectional gas permeability coefficient determinator |
| CN206546288U (en) * | 2017-02-10 | 2017-10-10 | 西南石油大学 | One kind point contact loose sand core model |
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Application publication date: 20170510 |