CN105588740B - A method of rushing sample device, the crude oil extraction of oil-bearing rock and assay - Google Patents
A method of rushing sample device, the crude oil extraction of oil-bearing rock and assay Download PDFInfo
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- CN105588740B CN105588740B CN201410558145.3A CN201410558145A CN105588740B CN 105588740 B CN105588740 B CN 105588740B CN 201410558145 A CN201410558145 A CN 201410558145A CN 105588740 B CN105588740 B CN 105588740B
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Abstract
Sample device is rushed the invention discloses a kind of, belong to crude oil extraction experimental technique field, including flush filter and draining device, flush filter includes in horn-like storage mouth, flush pipe and screen pipe, one end of flush pipe matches connection with the thin mouth end of storage mouth, the other end is connect with screen pipe, and one end of screen pipe is closed and set at closing there are one tap hole, and the diameter of tap hole is less than the caliber of screen pipe；Draining device includes solvent tank, two-way valve and the drainage tube set there are two port, and a port of two-way valve is connected to solvent tank, and one end connection of another port and drainage tube, the other end of drainage tube is plugged on the thin mouth end of storage mouth.By the way that rock sample to be placed in flush filter, control draining device is constantly automatically added to solvent, can continue efficiently to extract the crude oil in rock sample, and experimental procedure is simple and experimental period is shorter, improves sample analysis speed；The corollary apparatus of experiment is simple simultaneously, reduces experimental cost.
Description
Technical field
The present invention relates to crude oil extraction experimental technique field, more particularly to a kind of crude oil extraction for rushing sample device, oil-bearing rock
And the method for assay.
Background technology
The crude oil of oil-bearing rock extracts and assay is that an analysis often being done in petroleum exploration and development research is real
Project is tested, currently, it is typically according to chloroform dissolving crude oil and the performance of insoluble rock that this, which analyzes experiment, uses soxhlet type
Device extracts crude oil using the method that chloroform extracts oil-bearing rock circulation immersion.
However, during long-term experiment, the inventors discovered that it is this using Soxhlet extractor carry out crude oil extraction with
No matter the method for assay all has at least the following problems for which type of rock sample：
This method analytical procedure is complicated, experimental facilities used, utensil are various, also to consume a large amount of experiment material and water and
Electricity is not easy to carry out more large batch of sample point so that this experimental implementation is cumbersome, analyze speed is slow, experimental cost is high
It analyses to accelerate sample analysis speed.
Invention content
In order to solve problems in the prior art, an embodiment of the present invention provides it is a kind of rushing sample device, the crude oil of oil-bearing rock carries
It takes and the method for assay, technical solution is as follows：
On the one hand, sample device is rushed an embodiment of the present invention provides a kind of, suitable for being extracted to the crude oil oil-bearing rock
And assay, the sample device that rushes includes flush filter and draining device,
The flush filter includes in the flush pipe and screen pipe of horn-like storage mouth, straight tube-like cylindrical in shape, institute
The one end for stating flush pipe matches connection, the other end of the flush pipe and the one of the screen pipe with the thin mouth end of the storage mouth
The other end of end connection, the screen pipe is closed and is set at closing there are one tap hole, and the diameter of the tap hole is less than institute
State the caliber of screen pipe；
The draining device includes solvent tank, two-way valve and the drainage tube set there are two port, one of the two-way valve
Port is connected to the solvent tank, another port of the two-way valve is connect with one end of the drainage tube, the drainage tube
The other end be plugged on the thin mouth end of the storage mouth,
Grinding port plug is arranged on the outer wall of the drainage tube, one end that the flush pipe is connect with the storage mouth is provided with
With the matched interior ground of the grinding port plug.
Further, it is connected by the coupling tube of caliber gradual change between the flush pipe and the screen pipe, the transition
One end that the caliber of pipe is larger matches connection, smaller one end of caliber of the coupling tube and the screen pipe with the flush pipe
Matching connection.
Further, the solvent tank is spherical in shape, and one of described solvent tank port is tank mouth, the solvent tank
Another port is smaller than the tank mouth diameter and is connected to the two-way valve.
On the other hand, a kind of method that the embodiment of the present invention also provides the crude oil extraction and assay of oil-bearing rock, institute
The method of stating includes：
Filtrate is stoppered in screen pipe；
The rock sample is placed in the filtrate by the rock sample for weighing certain mass；
Layer of fine sand is covered on the rock sample, and one layer of filter paper is covered on fine sand；
So that the two-way valve of draining device is remained off, chloroform is added in solvent tank；
The two-way valve is opened, a small amount of chloroform is controlled and rinses inside pipe wall through drainage tube, when the liquid for rinsing attachment
It after submerging fine sand, then opens that two-way valve chlorination is imitative, controls the chloroform height being added in the flush pipe and reach 0.5cm, and
The measuring cup for accepting flushing liquor is placed under tap hole；
The draining device is docked with the flush filter, and controls the two-way valve and persistently adds into the flush pipe
Enter chloroform；
When the tap hole begins to flow out flushing liquor, the two-way valve is closed；
A period of time is stood, the two-way valve is controlled and rinses the rock sample in a manner of slowly lower drop；
After the crude oil in the rock sample is rinsed well, the two-way valve is closed, makes the chloroform in the measuring cup
Completely crude quality is weighed after volatilization；
According to the percentage composition of the crude quality and the Mass Calculation crude oil of the rock sample.
Further, the filtrate is cotton.
Further, in the rock sample for weighing certain mass, the quality that weighs of the rock sample is not more than 3g.
Further, described to cover layer of fine sand on the rock sample, the cladding thickness of the fine sand is 1~
The granularity of 1.5cm, the fine sand are 60~90 mesh.
Further, when described standing a period of time, the time of standing is more than 15 minutes.
The advantageous effect of technical solution provided in an embodiment of the present invention is：
It is provided in an embodiment of the present invention to rush sample device, rock sample is placed in flush filter, by controlling draining device not
It is automatically added to solvent disconnectedly, can continue efficiently to extract the crude oil in rock sample, experimental procedure is simple, simple operation and reality
It is shorter to test the period, improves sample analysis speed；The corollary apparatus of experiment is simple simultaneously, reduces experimental cost.
Description of the drawings
Fig. 1 is a kind of schematic cross-sectional view for rushing sample device that the embodiment of the present invention 1 provides；
Fig. 2 is the schematic cross-sectional view for the flush filter that the embodiment of the present invention 1 provides；
Fig. 3 is the schematic cross-sectional view for the draining device that the embodiment of the present invention 1 provides；
Fig. 4 is the flow of a kind of crude oil extraction for oil-bearing rock that the embodiment of the present invention 2 provides and the method for assay
Figure.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment 1
Referring to Fig. 1-3, sample device is rushed an embodiment of the present invention provides a kind of, suitable for being carried to the crude oil oil-bearing rock
It takes and assay, it includes flush filter 1 and draining device 2 to rush sample device,
Flush filter 1 include be in horn-like storage mouth 11, the flush pipe 12 of straight tube-like cylindrical in shape and screen pipe 13,
One end of flush pipe 12 matches connection, one end of the other end and screen pipe 13 of flush pipe 12 with the thin mouth end 111 of storage mouth 11
The other end of connection, screen pipe 13 is closed and is set at closing there are one tap hole 131, and the diameter of tap hole 131 is less than filtering
The caliber of pipe 13；
Draining device 2 includes solvent tank 21, two-way valve 22 and the drainage tube 23 set there are two port, and the one of two-way valve 22
A port is connected to solvent tank 21, another port of two-way valve 22 is connect with one end of drainage tube 23, drainage tube 23 it is another
End is plugged on the thin mouth end 111 of storage mouth 11.
Specifically, flush filter 1 is mainly used for rinsing the rock sample and filtration and washing liquid of solid, flush filter 1
Upper end be designed to that horn-like storage mouth 11 can be packed into filtrate and solid sample etc. more conveniently, flush pipe 12 is main
For containing and rinsing solid sample, the screen pipe 13 below flush pipe 12 is then used for filling in filtrate and filtration and washing liquid, mistake
The tap hole 131 that 13 lower end of chimney filter setting aperture is less than 13 caliber of screen pipe then can not only allow flushing liquor to flow out, but also can make to fill in
The filtrate of screen pipe 13 will not skid off；And draining device 2 is mainly used to control the flow regime of the addition and liquid of solvent, draining
The solvent tank 21 on 2 top of device is used for containing the solvent for rinsing solid sample, the two-way valve connected below by adjusting solvent tank 21
22, the solvent in solvent tank 21 can be made to pass through drainage tube 23 and be added in flush filter 1 or close molten at different rates
The addition of agent.
Further, grinding port plug 24, one end that flush pipe 12 is connect with storage mouth 11 are arranged on the outer wall of drainage tube 23
It is provided with and the matched interior ground of grinding port plug 24 14.
Grinding port plug 24 is used for and the sealing docking of interior ground 14, so as to so that draining device 2 and flush filter 1 connect well
It is integrated；Interior ground 14 can be arranged to horn-like, thin mouth end 111 connection of the wide port part and storage mouth 11 of interior ground 14, interior
It is connected with flush pipe 12 at the thin mouth of ground 14, grinding port plug 24 can be arranged to the shape of ground 14 in matched horn shape, be convenient for
Grinding port plug 24 avoids grinding port plug 24 from excessively filling in flush pipe 12 simultaneously with 14 grafting of interior ground.
Further, it is connected by the coupling tube 15 of caliber gradual change between flush pipe 12 and screen pipe 13, coupling tube 15
The larger one end of caliber matches connection with flush pipe 12, and one end that the caliber of coupling tube 15 is smaller matches connection with screen pipe 13.
Flush pipe 12 is coaxially connected by the coupling tube 15 and screen pipe 13 of caliber gradual change, may make into screen pipe 13
When filling in filtrate, filtrate is made to fill in tighter with the contraction of caliber.
Further, solvent tank 21 is spherical in shape, one of solvent tank 21 port be tank mouth 25, solvent tank 21 it is another
A port is smaller than 25 diameter of tank mouth and is connected to two-way valve 22.
It is provided in an embodiment of the present invention to rush sample device, rock sample is placed in flush filter, by controlling draining device not
It is automatically added to solvent disconnectedly, can continue efficiently to extract the crude oil in rock sample, experimental procedure is simple, simple operation and reality
It is shorter to test the period, improves sample analysis speed；The corollary apparatus of experiment is simple simultaneously, reduces experimental cost.This rushes sample device
It is not only convenient for experimental implementation and control, can also preferably reduce the dosage of solvent, so that this is rushed sample device and is particularly suitable for less
The a small amount of pulverulent solids sample of solvent washing in soluble substance, in addition, after the screen pipe for rushing sample device tightly fills in filtrate, also
Flushing liquor can be filtered well.
Embodiment 2
Referring to Fig. 4, a kind of method that the embodiment of the present invention provides the crude oil extraction and assay of oil-bearing rock is suitable for
Using sample device is rushed as described in Example 1, this approach includes the following steps：
S1：Filtrate is stoppered in screen pipe；
Specifically, in the extraction of the crude oil of oil-bearing rock and assay, it is necessary to obtain pure crude oil, could claim accurate
True crude quality, obtains correct crude content data, and existing crude oil extraction element due to do not have filtering function or
Only rough filtering function often contains the impurity such as a certain number of rock particles in obtained extracting solution and is therefore extracting
After work terminates, it is necessary to which pure crude oil can be obtained by being specially filtered to extract, this not only extends experiment week
Phase, while also increasing workload etc..This method rushes sample device using described in embodiment 1, can be directly in the flushing for rushing sample device
Filtrate is stoppered in the screen pipe of filter so that while rinsing crude oil, flushing liquor is also made to be filtered well in passing,
Eliminate special filter, time saving and energy saving and province's object.
In a kind of embodiment of the embodiment of the present invention, filtrate is cotton, and when experiment is first rushing the flushed of sample device
Cotton is stoppered in the screen pipe of filter, then rock sample is placed on cotton.
S2：The rock sample for weighing certain mass, rock sample is placed in filtrate；
Specifically, when weighing the rock sample of certain mass, the quality that weighs of rock sample is not more than 3g.Flush filter
Screen pipe in flush filter is weighed to an inferior quality on balance after filtrate beyond the Great Wall, be then charged into the powder no more than 3g
Shape rock sample weighs on balance primary again, and the difference weighed twice is exactly the quality of rock sample, rock sample when weighing
It is placed directly in filtrate, tap flush filter keeps rock sample filling uniform after the completion of weighing, molten in order to add
The crude oil in whole rock samples is sufficiently uniformly extracted when agent.
When rock sample is higher oil-bearing sand of oil content etc., as long as some rock samples, typically not greater than 3g, just
The crude oil that enough follow-up studies use can be extracted, this method is particularly suitable for the higher rock sample of oil content, because this
Rock sample experimental measuring is few.Rock sample is fewer, and the volume accounted for is with regard to smaller, and the better extraction of crude oil, completes crude oil extraction and uses
Chloroform it is also fewer.For suitable for extracting a small amount of oil-bearing rock, the caliber of flush pipe 12 is 10mm~15mm, flush pipe 12
The pipe range of pipe range 80mm~100mm, screen pipe 13 are 10mm~15mm, and the caliber of screen pipe 13 is than 12 small 2mm of flush pipe.
S3：Layer of fine sand is covered on rock sample, and one layer of filter paper is covered on fine sand；
Specifically, when covering layer of fine sand on rock sample, the cladding thickness of fine sand is 1~1.5cm, the granularity of fine sand
For 60~90 mesh, and fine sand is free of chloroform soluble object.The property that rock is not dissolved according to chloroform dissolving crude oil, in the present embodiment
Crude oil in solvent washing rock sample is made using chloroform, when rinsing oil-bearing rock sample with chloroform, if directly in rock
Chloroform is added above sample, after chloroform is added to certain altitude, the rock sample of the crude oil in rock sample, especially top layer
In crude oil can be diffused into the chloroform for not yet entering rock sample above rock sample, so that chloroform is not entered rock sample
Preceding purity is just lowered, and can undoubtedly reduce the flush efficiency of chloroform, increases the usage amount of chloroform, and is covered on rock sample
60~90 purposes of 1~1.5cm thickness are free of the fine sand of chloroform soluble object, not only do not interfere with experimental result, but also can make the chlorine of addition
It is imitative to pass through, into rock sample, moreover it is possible to inhibit the crude oil in rock sample not enter rock sample upward well
It is spread in chloroform, so as to improve the flush efficiency of chloroform, reduces the usage amount of chloroform.Meanwhile covering one in fine sand top surface
Piece filter paper, fine sand is impacted and is stirred when can prevent that chloroform is added, and fine sand is made preferably to play the role of crude oil for inhibiting diffusion.
S4：So that the two-way valve of draining device is remained off, chloroform is added in solvent tank.
When rinsing rock sample with chloroform, the addition of chloroform is controlled using draining device, by adjusting the two-way valve of draining device,
The drainage tube that the chloroform in the solvent tank of draining device passes through draining device can be made to be added in flush filter at different rates
Or close the addition of chloroform.
S5：Two-way valve is opened, a small amount of chloroform is controlled and rinses inside pipe wall through drainage tube, and place and be used under tap hole
Accept the measuring cup of flushing liquor.
Specifically, it is being packed into rock sample into flush filter and when fine sand, is inevitably having rock sample and fine sand
Powder is attached on the inner wall at flush filter epimere free time position, rinses these attachments with a small amount of chloroform, both having rinsed can
Can attachment crude oil, and when grinding port plug of next draining device can be enable dock with the interior ground of flush filter dock sternly
It is close.Simultaneously as the chloroform flush efficiency of this method is higher, chloroform dosage is less, therefore, can directly use the title of constant weight
Measuring bottle accepts flushing liquor, eliminates common flushing liquor concentration and filters transfer two to measuring cup with chloroform distillation recovery, concentrate
Big step.
S6：Draining device is docked with flush filter, and controls two-way valve and is continuously added into chloroform into flush pipe.
Specifically, when the liquid level of the liquid of flushing attachment submerges the top surface of fine sand, two-way valve is again turned on by drawing
Chloroform is added into the flush pipe of flush filter in flow tube.When the chloroform height being added in flush pipe reaches 0.5cm, by draining
The interior ground docking of the grinding port plug and flush filter of device, and continue through drainage tube and chloroform is added into flush pipe.
More oil composition may be contained by rinsing in the liquid of attachment, be added after this partially liq submerges fine sand
Chloroform can make the chloroform being newly added keep higher purity, to improve the flush efficiency of chloroform.It is added in flush pipe certain
Then the chloroform of height makes the interior ground docking of the grinding port plug and flush filter of draining device, can utilize flush pipe top pair
The closed system to be formed is connect, the height when chloroform in flush pipe being made to be remained substantially in docking is kept certain height in flush pipe
Chloroform chloroform can be made equably to be flushed to whole solid samples in the horizontal direction, still, if chloroform height is too big, to the greatest extent
Pipe uses fine sand to inhibit the crude oil in rock sample to diffuse up, and is also not excluded for a small amount of crude oil possibly into chloroform above
In, so that more chloroform is lowered purity, and then influence the flush efficiency of chloroform.Therefore, consider in conjunction with convenient for regulation and control, selection
It is preferable with 0.5cm using minimum liquid level.
S7：When tap hole begins to flow out flushing liquor, two-way valve is closed.
Specifically, when tap hole begins to flow out flushing liquor, show that chloroform has enter into rock sample, close two at this time
Port valve, then using the closed system on flush pipe top make to enter the chloroform in rock sample be detained it is motionless, so as to fully it is molten
Solve the crude oil in rock sample.
S8：A period of time is stood, control two-way valve rinses rock sample in a manner of slowly lower drop.
Specifically, when standing a period of time, the time of standing is more than 15 minutes, enters the chloroform needs in rock sample
15 minutes or more, the crude oil in rock sample more can be fully dissolved, row rinses again after crude oil fully dissolves, it is easier to
It develops.The flushing of crude oil uses the flushing liquor slowly lower backwashing manner dripped, and usually, flushing flow velocity is faster, chloroform
Flush efficiency is lower, and flushing flow velocity is slower, and the flush efficiency of chloroform is higher, is rushed by the way of flushing liquor slowly lower drop
It washes, can preferably improve the flush efficiency of chloroform, reduce the dosage of chloroform.And the flow velocity of flushing liquor is controlled by two-way valve
System, turn down two-way valve and by the closed system on flush pipe top, the flows decrease of flushing liquor can be made, open big two-way valve and by
The static pressure of chloroform, can accelerate the flow velocity of flushing liquor in the closed system and draining device on flush pipe top.In the mistake for rinsing sample
Cheng Zhong, when the measuring cup for accepting flushing liquor has accepted fuller liquid, should close two-way valve makes flushing liquor stop outflow, allows
Chloroform in measuring cup adjusts two-way valve again after volatilizing in right amount, continues to rinse rock-like by the way of flushing liquor slowly lower drop
Product.Accepted in measuring cup fuller liquid refer to liquid and weigh bottleneck at a distance from be less than 1.5cm when.
S9：After the crude oil in rock sample is rinsed well, two-way valve is closed, after making the chloroform volatilization completely in measuring cup
Weigh crude quality.
Specifically, it can judge whether the crude oil in rock sample extracts totally to flushing liquor progress fluoroscopic examination, it is glimmering
Light detection is detection means commonly used in the art, and details are not described herein, after the crude oil in rock sample is rinsed well, weighs at this time
There are the chloroform being added in all crude oil and experiment in bottle, need to make the chloroform in measuring cup under room temperature or set point of temperature
It volatilizees completely, only remaining crude oil, in order to measure crude quality.Measuring cup can be placed on assay balance and be weighed, if chlorine
Imitative volatilization completely, then the weighing result several times of different time is the same, if chloroform does not volatilize completely, measuring cup once compares
Once claim gently, it is desirable that claim until constant.
S10：The percentage composition of the Mass Calculation crude oil of based on crude quality and rock sample.
Specifically, it is exactly crude oil matter that so-called quality, which subtracts the quality of measuring cup, after the chloroform in measuring cup completely volatilization
The percentage composition of rock sample Crude Oil can be calculated in the quality of amount, based on crude quality and rock sample.
The space that experimental facilities and utensil occupy used by the method for the present embodiment is smaller, is easy to install more in large quantity
It uses, and experimental implementation is relatively simple, is convenient for more large batch of sample analysis, is verified through practical operation, usually a batch
When sample analysis tests people's operation, about 80 samples can be analyzed, then only needs 6 days experimental period, greatly accelerates sample
Analyze speed.
The crude oil of oil-bearing rock provided in an embodiment of the present invention extracts and the method for assay, is suitable for powdered oil-containing
The crude oil of rock extracts and assay, and this method is less using chloroform, directly measuring cup is used to accept flushing liquor, eliminated logical
Normal flushing liquor concentration and chloroform are distilled to recover, concentrate filters two big steps of transfer to measuring cup, and experimental procedure is simple, operates
Convenient and experimental period is shorter, improves sample analysis speed；The extraction of crude oil simultaneously only uses punching with assay experiment
The corollary apparatus of sample device, measuring cup etc., experiment is simple, and experimental cost is relatively low.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of rushing sample device, suitable for being extracted to the crude oil oil-bearing rock and assay, which is characterized in that the punching
Sample device includes flush filter and draining device,
The flush filter includes in the flush pipe and screen pipe of horn-like storage mouth, straight tube-like cylindrical in shape, the punching
The one end for washing pipe matches connection with the thin mouth end of the storage mouth, and the other end of the flush pipe and one end of the screen pipe connect
It connects, the other end of the screen pipe is closed and set at closing there are one tap hole, and the diameter of the tap hole is less than the mistake
The caliber of chimney filter；
The draining device includes solvent tank, two-way valve and the drainage tube set there are two port, a port of the two-way valve
Be connected to the solvent tank, another port of the two-way valve is connect with one end of the drainage tube, the drainage tube it is another
One end is plugged on the thin mouth end of the storage mouth,
Grinding port plug is arranged on the outer wall of the drainage tube, one end that the flush pipe is connect with the storage mouth is provided with and institute
State the matched interior ground of grinding port plug.
2. according to claim 1 rush sample device, which is characterized in that pass through caliber between the flush pipe and the screen pipe
The coupling tube of gradual change connects, and one end that the caliber of the coupling tube is larger matches connection with the flush pipe, the coupling tube
The smaller one end of caliber matches connection with the screen pipe.
3. according to claim 1 rush sample device, which is characterized in that the solvent tank is spherical in shape, and the solvent tank is wherein
One port is tank mouth, another port of the solvent tank is smaller than the tank mouth diameter and is connected to the two-way valve.
4. a kind of crude oil of oil-bearing rock extracts and the method for assay, using punching as described in any one of claims 1-3
Sample device is realized, which is characterized in that the method includes：
Filtrate is stoppered in screen pipe；
The rock sample is placed in the filtrate by the rock sample for weighing certain mass；
Layer of fine sand is covered on the rock sample, and one layer of filter paper is covered on fine sand；
So that the two-way valve of draining device is remained off, chloroform is added in solvent tank；
The two-way valve is opened, a small amount of chloroform is controlled and rinses inside pipe wall through drainage tube, when the liquid for rinsing attachment submerges
It after fine sand, then opens two-way valve chlorination and imitates, control the chloroform height being added in the flush pipe and reach 0.5cm, and flowing out
The measuring cup for accepting flushing liquor is placed under hole；
The draining device is docked with the flush filter, and controls the two-way valve and is continuously added into chlorine into the flush pipe
It is imitative；
When the tap hole begins to flow out flushing liquor, the two-way valve is closed；
A period of time is stood, the two-way valve is controlled and rinses the rock sample in a manner of slowly lower drop；
After the crude oil in the rock sample is rinsed well, the two-way valve is closed, keeps the chloroform in the measuring cup complete
Crude quality is weighed after volatilization；
According to the percentage composition of the crude quality and the Mass Calculation crude oil of the rock sample.
5. according to the method described in claim 4, it is characterized in that, the filtrate is cotton.
6. according to the method described in claim 4, it is characterized in that, in the rock sample for weighing certain mass, the rock
The quality that weighs of stone sample is not more than 3g.
7. according to the method described in claim 4, it is characterized in that, described cover layer of fine sand, institute on the rock sample
The cladding thickness for stating fine sand is 1~1.5cm, and the granularity of the fine sand is 60~90 mesh.
8. according to the method described in claim 4, it is characterized in that, when described standing a period of time, the time of standing is more than 15
Minute.
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| CN201410558145.3A CN105588740B (en) | 2014-10-20 | 2014-10-20 | A method of rushing sample device, the crude oil extraction of oil-bearing rock and assay |
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| CN105588740B true CN105588740B (en) | 2018-08-14 |
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| CN2549455Y (en) * | 2002-06-05 | 2003-05-07 | 吉林中谷科技工程有限公司 | Coarse fatty rapid dipping extractor |
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| CN201688990U (en) * | 2010-05-21 | 2010-12-29 | 江苏中烟工业有限责任公司徐州卷烟厂 | Burette type extraction unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2549455Y (en) * | 2002-06-05 | 2003-05-07 | 吉林中谷科技工程有限公司 | Coarse fatty rapid dipping extractor |
| CN1566943A (en) * | 2003-06-27 | 2005-01-19 | 中国石油天然气股份有限公司 | Process for separating and preparing neutral nitrogen compound in crude oil |
| CN201688990U (en) * | 2010-05-21 | 2010-12-29 | 江苏中烟工业有限责任公司徐州卷烟厂 | Burette type extraction unit |
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