CN206772661U - A kind of sand homogenizing device for preparing artificial homogeneous long core - Google Patents
A kind of sand homogenizing device for preparing artificial homogeneous long core Download PDFInfo
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- CN206772661U CN206772661U CN201720123920.1U CN201720123920U CN206772661U CN 206772661 U CN206772661 U CN 206772661U CN 201720123920 U CN201720123920 U CN 201720123920U CN 206772661 U CN206772661 U CN 206772661U
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- rock core
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Abstract
The utility model provides a kind of sand homogenizing device for preparing artificial homogeneous long core, including：Frequency modulation vibrator group, groups of springs, rock core sowblock, mould depression bar, main body frame and operating platform；The groups of springs is arranged between operating platform and main body frame, and frequency modulation vibrator group is fixed on above operating platform, and symmetrical fixation；The rock core sowblock is used to grip rock core mould, and the rock core sowblock is fixed on above operating platform and is placed between frequency modulation vibrator；Mould depression bar is used to suppress the quartz sand in rock core mould；The groups of springs includes nine groups of springs, is distributed according to endian format between operating platform and main body frame；The screwed hole for fixing the rock core sowblock is provided with the operational platform.The application avoids between irregular sand grains that contact forms large-scale hole naturally, in pressing process andesinite heart difference section uniform force, so that rock core homogenieity is good.
Description
Technical field
Petroleum works technical field is the utility model is related to, more particularly to a kind of even sand for preparing artificial homogeneous long core
Device.
Background technology
With being deepened continuously to reservoir geology, oil-gas field development related science research understanding, to meeting to study needs
Rock core demand is more and more, so as to further recognize oil-gas reservoir and develop oil-gas reservoir.But due to live core-taking technology is complicated, into
This is higher, and the rock core taken out, damaged (complete coring is not easy), the more low factor of coring success rate to a certain extent be present
Influence, cause can for experimental study natural core it is very short.In order to meet the needs of experimental study and scientific activities, people
The preparation and use of the lithogenesis heart, the use of natural core at this stage, while deeply developing with oil gas field can be supplemented, in oil
Carrying out coring in gas production process also can be fewer and fewer, and the standby artificial core for meeting scientific research requirements is the base of future studies
Plinth.
With research and understanding go deep into, the specification also gradual diversification of artificial core, be no longer limited to past short rock
The heart φ 25mm × 100mm and φ 38mm × 100mm；The size of rock core is smaller, and its pore volume is also smaller, typically left in 10mL
The right side, in displacement process is studied, output liquid measure causes experimental error larger very little, and existing apparatus and method can not expire well
The requirement of sufficient experimental contrast analysis.So need larger sized rock core to carry out oil displacement experiment research in rock core size, and it is right
In the making of long cores, mainly there is two ways, a kind of is the form of fill out sand tube, and another kind is to use the short company of saving of rock core one
The form being connected together.Wherein multiple short rock cores are cascaded by latter, the discontinuous problem of capillary be present, for driving
Exist for experiment and flow discontinuous influence, cause experimental repeatability poor.And use long fill out sand tube to make long cores, it is to use
One section one section plus sand, segmentation compacting can well in the minds of guarantor's lithogenesis rock particles stability, and current fill out sand tube
Make the Main Means of rock core.But segmentation compacting, there can be forging and stamping section, cause the heterogeneous of rock core；If pressure is not segmented
System, can cause the good compaction of live end pressure transmission strong, and compactibility is poor in the middle part of fill out sand tube, bright so as to cause rock core to exist
Aobvious is heterogeneous, and the position away from active force, and permeability and porosity are much larger than the position that early work is exerted oneself, and structure is dredged relatively
Pine, sand migration is easily caused during rock core displacement, influence experimental result.
Utility model content
The purpose of this utility model is the homogeneous sex chromosome mosaicism for long cores, avoids suppressing inequality in rock core preparation process
" bridge formation " of uniform quartz sand particle causes rock core unstable, there is provided one kind can quartz sand is dispersed, eliminate particle with
" bridge formation " between particle, reach the contact relation changed between sand grains, make to contact between quartz sand particle it is even closer, so as to
Ensure that pressure is uniform in pressing process, avoids heterogeneous device of long cores.
A kind of sand homogenizing device for preparing artificial homogeneous long core, including：Frequency modulation vibrator group, groups of springs, rock core mould
Clamper, mould depression bar, main body frame and operating platform；The groups of springs is arranged between operating platform and main body frame, is adjusted
Frequency vibration device group is fixed on above operating platform, and symmetrical fixation；The rock core sowblock is used to grip
Rock core mould, the rock core sowblock are fixed on above operating platform and are placed between frequency modulation vibrator group；Mould pressure
Bar is used to suppress the quartz sand in rock core mould；
The groups of springs includes nine groups of springs, is distributed according to endian format between operating platform and main body frame；
The screwed hole for fixing the rock core sowblock is provided with the operational platform.
Further, the sand homogenizing device of artificial homogeneous long core is prepared as described above, it is each in the groups of springs
The heart is additionally provided with alignment pin to spring wherein, and one end of the alignment pin is fixed on main body frame, and it is flat that one end is inserted in operation
In through hole on platform.
Further, the sand homogenizing device of artificial homogeneous long core, the rock core sowblock are prepared as described above
Including upper mounted plate, bottom plate and the fixed plate of vertical connection, the connecting plate of bottom plate, in fixed plate
On be provided with the jack that rock core mould is inserted into, fixing hole is provided with bottom plate, the fixing hole leads to screwed hole
Bolt is crossed to be fixedly connected with rock core sowblock with operating platform.
Further, the sand homogenizing device of artificial homogeneous long core is prepared as described above, and the mould depression bar is tubular
Structure, its diameter are matched with rock core mould internal diameter, and the through hole among mould depression bar is carried out using the three layer filtration net in 200 mesh net footpaths
Closure.
Further, the sand homogenizing device of artificial homogeneous long core is prepared as described above, and the mould depression bar is by spiral shell
The long high density steel columns of 7cm of rotating connection are formed by connecting.
Further, the sand homogenizing device of artificial homogeneous long core is prepared as described above, and the frequency modulation vibrator group is
Can provide the vertical vibration power of different frequency and shake frequency relatively low, the larger form vibrator of amplitude.
Further, the sand homogenizing device of artificial homogeneous long core is prepared as described above, and the operating platform is by 5cm
Thick punched steel plate is formed.
Further, the sand homogenizing device of artificial homogeneous long core, the bottom of the main body frame are prepared as described above
It is fixed with Mobile foot stool.
Beneficial effect：
The sand homogenizing device for preparing artificial homogeneous long core that the application provides, avoid and connect naturally between irregular sand grains
Touch and form large-scale hole, in pressing process andesinite heart difference section uniform force, so that rock core homogenieity is good.
Brief description of the drawings
Fig. 1 is the sand homogenizing device structural representation that the application prepares artificial homogeneous long core；
Fig. 2 is the application rock core sowblock structural representation；
Fig. 3 is Fig. 1 top view；
Fig. 4 is the artificial core ultrasonic wave homogenieity test curve figure of embodiment 1；
Fig. 5 is the electrical conductivity homogenieity test curve figure of the sandpack column of embodiment 2.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below technical side in the utility model
Case is clearly and completely described, it is clear that and described embodiment is the utility model part of the embodiment, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belong to the scope of the utility model protection.
The application provides a kind of sand homogenizing device for preparing artificial homogeneous long core, as Figure 1-3, including：Frequency modulation shakes
Dynamic device group 1, groups of springs 3, rock core sowblock 6, mould depression bar, main body frame 4 and operating platform 2；The groups of springs 3 is installed
Between operating platform 2 and main body frame 4, frequency modulation vibrator group 1 is fixed on above operating platform 2, and symmetrical solid
It is fixed；The rock core sowblock 6 is used to grip rock core mould, and the rock core sowblock 6 is fixed on operating platform 2
Above and be placed between frequency modulation vibrator group 1；Mould depression bar is used to suppress the quartz sand in rock core mould；
The groups of springs 3 includes nine groups of springs, is distributed according to endian format between operating platform 2 and main body frame 4；
The screwed hole 21 for fixing the rock core sowblock is provided with operating platform 2.
The heart is additionally provided with alignment pin to each spring in the groups of springs 3 wherein, and one end of the alignment pin is fixed on
On main body frame 4, one end is inserted in the through hole on operating platform 2.
As shown in Fig. 2 the rock core sowblock 6 includes upper mounted plate 61, bottom plate 62 and vertical connection institute
Upper mounted plate 61, the connecting plate of bottom plate 62 are stated, be provided with that rock core mould is inserted on fixed plate 61 inserts
Hole 611, is provided with fixing hole 621 on bottom plate 62, and the fixing hole 621 and screwed hole 21 are by bolt by rock core mould
Clamper 6 is fixedly connected with operating platform 2.
The mould depression bar is tubular structure, and its diameter is matched with rock core mould internal diameter, and the through hole among mould depression bar is adopted
Blocked with the three layer filtration net in 200 mesh net footpaths.
The mould depression bar is formed by connecting by the long high density steel columns of the 7cm spirally connected.
The frequency modulation vibrator group 1 be can provide different frequency vertical vibration power and shake frequency it is relatively low, amplitude compared with
Big form vibrator, the bottom of the main body frame 4 are fixed with Mobile foot stool 5.
To improve the contact relation of artificial core particle, the artificial long core of point contact relation is prepared, the application devises
Sand homogenizing device as described above.The design has mobility in itself, alleviates the difficulty of bulky rock core mould in transit,
Its secondary design can be that a variety of rock core moulds carry out even sand and compacting.
What the oscillator group was selected is frequently relatively low, the larger form vibrator of amplitude (frequency that shakes is adjustable), due to being that shakes
Long cores mould, it is disposed vertically on the operational platform, rock core upper part can be because hypertelorism, vibration declines, and one
As from it is relatively low shake frequency, stronger amplitude vibrator vibration.Vibration processes are up-down vibrations, install mold depression bar, promote stone
Sand stress vertically downward, avoids nature from contacting to form " crane span structure " space.
The groups of springs allows for the strength vibration that vibration processes are brought, and is effectively buffered by the support of spring
Vibration between operating platform and support frame, also reduce the burden that oscillator drives whole device；Nine groups of springs, according to
" nine grids " formula is distributed, and makes the effect of vibration of vibrator from single vertical vibration, be changed into vertical based on, the vibration supplemented by level
The effect of mode, wherein alignment pin is to ensure that the stability of operating platform and rock core mould in vibration processes, makes between sand grains
Contact it is more close.
The rock core sowblock, its effect is vertical fixed long cores mould, long cores mould is operated with even sand
Platform is realized together to move in vertical and transverse direction；The clamper top can (the mould depression bar has with arranged orthogonal mould depression bar
Have air vent, ensure in depression bar sinking watching, gas in mould is quickly deviate from from top), make quartz sand etc. in model
It by certain pressure, after forcing rock core effect vibrated, can quickly sink, avoid phenomenon appearance of " building bridge ".
The main body frame allows for the pressure that itself carry rock core and its manufacture mould, and its is secondary to bear high frequency vibrating
Dynamic, the oscillating force brought, so structure will consolidate, four rod structures of design that support superstructure can be stablized.
The operating platform is thick 2cm steel plate, above regular be furnished with screwed hole as shown in figure 3, its effect is fixed
Oscillator and rock core sowblock, meet different size rock core Mould operation requirements, ensure quartz in artificial long core model
The uniformity of sand particle vibration.
The application device is inserted quartz sand, then vibrated first in follow-up rock core manufacturing process, continues plus sand vibrates
Afterwards, the artificial long core after suppressing and be cementing has good homogenieity.
Embodiment 1：
The contact cement artificial long core made according to above-mentioned utility model.
First have to fill and present two 25 × 500mm of φ long consolidated core：
A) quartz sand and powder epoxy resin are mixed, proportionally 20:1 mixing (mixing 1200g quartz sands, 60g epoxies
Plastic bonding agent) it is stand-by.
B) quartz sand and the common 500g of cementing agent composition are loaded into two rock cores respectively and makes model.A wherein core model
A is put into after vibration sand homogenizing device vibration 30s and another core model B for not carrying out any operation, is put into forging press together.Can
To find：Due to effect of vibration, the 500g quartz sand particles in core model A have dropped 4cm height, add a small amount of quartz sand
Continue to vibrate 10s after (increment is only slight beyond 500mm length, about 0.5cm), it is ensured that model A and the quartz sand of Model B are the same as high.So
After carrying out forging and stamping 5 minutes using uniform pressure 15MPa afterwards, two rock core moulds further add quartz sand, it is ensured that length is
500mm, forged and pressed, until two sandpack columns are loaded and finished, be put into insulating box high-temperature baking, after cooling, the demoulding is taken out
Rock core A and rock core B.
Contrast verification has been carried out by laboratory core displacement test.
(1) rock core perm-plug method：
Experiment flow is connected, determines core permeability according to national standard, rock core A and B perm-plug method are respectively：
2002mD and 2152mD.
(2) measure of core porosity：
By weighing rock core, the dry weight for determining rock core A and rock core B is respectively 586g and 532g, and rock core density is larger, shows
Pore volume is smaller, and the rock core A contacts after vibration are closer compared with rock core B.
(3) ultrasonic measuring homogenieity is used, compares rock core A and rock core B uniformity：
The homogeneous degree of ultrasonic wave sectionalization test rock core diverse location, its result is shown in Fig. 4, it can be found that after vibration
Every section of rock core A ultrasound feedback speed is close, shows that the overall homogenieity of rock core is preferable；And rock core B be present by it is low to
High tendency, test result indicates that rock core A homogenieity is substantially better than rock core B homogenieity.
By the determination of three core experiment parameters, the quartz sand contact after being vibrated by even sand mo(u)ld type is more close, keeps away
Phenomenon of " building bridge " is exempted from, rock core is more uniform.
Embodiment 2：
The fill out sand tube long cores made according to above-mentioned utility model.
First from two 25 × 500mm of φ long cores model, quartz sand 500g is inserted inside respectively.A piece fill out sand tube
C is put into vibration sand homogenizing device and vibrates 30s, and another fill out sand tube D is not vibrated, is directly placed into forging press forging and stamping.It can be found that：
Due to effect of vibration, the 500g quartz sand particles in fill out sand tube C have dropped 4cm or so height in a model, add a small amount of stone
Sand continues to vibrate 10s after (exceeding model 0.5cm), ensures that the quartz sand in fill out sand tube C and the quartz sand in fill out sand tube D are same
It is high.
Then after both carry out forging and stamping 5 minutes using uniform pressure 15MPa, two rock core moulds further add sand, it is ensured that most
It is 500mm to fill and present length eventually, addition model end face lid, that is, loads and finishes.
Contrast verification has been carried out by laboratory core displacement test.
(1) rock core perm-plug method：
Experiment flow is connected, determines core permeability according to national standard, both are respectively at perm-plug method：1823mD and
2353mD。
(2) measure of core porosity：
By weighing rock core, the dry weight for determining two fill out sand tube C and D is respectively 23.21kg and 22.82kg, wherein MODEL C
The weight of exocuticle is 22.62kg, and the weight of model D exocuticles is 22.29kg；The rock core dry weight of two models be respectively 590g and
530g, the rock core contact after vibration are closer.
(3) measure of rock core homogenieity, using conductance measurement homogenieity：
Slope in electrical conductivity test is higher, it is more uniform to show that waterflood front promotes, experimental result is as shown in figure 5, back-up sand
Pipe C rock cores slope is higher than fill out sand tube D rock cores, so the uniformity of the rock core C after vibration is better than rock core D.
It is more close by the quartz sand contact after even sand mo(u)ld type by the determination of three core parameters, avoid " frame
Bridge " phenomenon, rock core are more uniform.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (8)
- A kind of 1. sand homogenizing device for preparing artificial homogeneous long core, it is characterised in that including：Frequency modulation vibrator group (1), spring Group (3), rock core sowblock (6), mould depression bar, main body frame (4) and operating platform (2)；The groups of springs (3) is arranged on Between operating platform (2) and main body frame (4), frequency modulation vibrator group (1) is fixed on above operating platform (2), and symmetrical point Cloth is fixed；The rock core sowblock (6) is used to grip rock core mould, and the rock core sowblock (6) is fixed on Above operating platform (2) and it is placed between frequency modulation vibrator group (1)；Mould depression bar is used to suppress the quartz in rock core mould Sand；The groups of springs (3) includes nine groups of springs, is distributed according to endian format between operating platform (2) and main body frame (4)；The screwed hole (21) for fixing the rock core sowblock is provided with operating platform (2).
- 2. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the groups of springs (3) heart is additionally provided with alignment pin to each spring in wherein, and one end of the alignment pin is fixed on main body frame (4), and one End is inserted in the through hole on operating platform (2).
- 3. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the rock core mould Having clamper (6) includes upper mounted plate (61), bottom plate (62) and the fixed plate of vertical connection (61), bottom plate (62) connecting plate, the jack (611) that rock core mould is inserted into is provided with fixed plate (61), in bottom plate (62) it is provided with fixing hole (621) on, the fixing hole (621) and screwed hole (21) are by bolt by rock core sowblock (6) it is fixedly connected with operating platform (2).
- 4. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the mould pressure Bar is tubular structure, and its diameter matches with rock core mould internal diameter, and the through hole among mould depression bar uses three layers of mistake in 200 mesh net footpaths Filter screen is blocked.
- 5. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the mould pressure Bar is formed by connecting by the long high density steel columns of the 7cm spirally connected.
- 6. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the frequency modulation shakes Dynamic device group (1) is that can provide the vertical vibration power of different frequency and the frequency that shakes is relatively low, the larger adhesion type vibration of amplitude Device.
- 7. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the operation is flat Platform (2) is made up of 5cm thickness punched steel plates.
- 8. the sand homogenizing device according to claim 1 for preparing artificial homogeneous long core, it is characterised in that the body frame The bottom of frame (4) is fixed with Mobile foot stool (5).
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| CN201720123920.1U CN206772661U (en) | 2017-02-10 | 2017-02-10 | A kind of sand homogenizing device for preparing artificial homogeneous long core |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769329A (en) * | 2017-02-10 | 2017-05-31 | 西南石油大学 | A kind of sand homogenizing device for preparing artificial homogeneous long core |
| CN108825221A (en) * | 2018-06-01 | 2018-11-16 | 中国海洋石油集团有限公司 | Homogeneous and heterogeneous thick oil pay remaining oil distribution detection device and method in layer |
-
2017
- 2017-02-10 CN CN201720123920.1U patent/CN206772661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769329A (en) * | 2017-02-10 | 2017-05-31 | 西南石油大学 | A kind of sand homogenizing device for preparing artificial homogeneous long core |
| CN108825221A (en) * | 2018-06-01 | 2018-11-16 | 中国海洋石油集团有限公司 | Homogeneous and heterogeneous thick oil pay remaining oil distribution detection device and method in layer |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20210210 |