CN110501251A - Rock sample weighing device and method in a kind of liquid - Google Patents
Rock sample weighing device and method in a kind of liquid Download PDFInfo
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- CN110501251A CN110501251A CN201810471586.8A CN201810471586A CN110501251A CN 110501251 A CN110501251 A CN 110501251A CN 201810471586 A CN201810471586 A CN 201810471586A CN 110501251 A CN110501251 A CN 110501251A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
The invention discloses rock sample weighing device in a kind of liquid, which includes magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism and rock sample Weighing mechanism.Magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism is used to control the density of magnetic fluid, and rock sample Weighing mechanism is used to measure the weight for the rock sample being immersed in magnetic fluid.The apparatus structure is simple, it is small to be affected by human factors, it is few to employ equipment.Rock sample total volume measuring accuracy is improved by means of the weighing method of the device, shortens test period.It lays the foundation for rock sample total volume Accurate Determining, preferably meets oil-gas geology research requirements of one's work.
Description
Technical field
The present invention relates to petroleum and gas geology and exploration technical fields, more particularly, to rock sample weighing device and side in a kind of liquid
Method.
Background technique
Under normal conditions, weighing the weight of object in a liquid utilizes " peeling " technology can be realized, it appears that has become
Well known common sense.But in geology field, under certain specific operating condition and background, rock sample claims in variable density liquid
The problem of weight is worth deeply probing into.
The measurement of rock sample total volume is the important link of rock sample porosity determination.Existing rock sample total volume measuring method master
There is gas method, measure method, test tube liquid level method, buoyancy method and variable density buoyancy method.Wherein, buoyancy method refers to dries in rock sample
On the basis of dry, rock sample to be measured is impregnated with liquid and when liquid does not enter back into rock sample, weighs rock sample under room temperature, condition of normal pressure and exists
Weight in liquid, and measure the specific gravity of liquid.Rock sample is taken out from liquid, the liquid on rock sample surface is wiped, weighs immersion
The aerial weight of rock sample afterwards, the rock sample in air and in a liquid difference of weight, divided by the specific gravity of liquid, so that it may
To the total volume of rock sample.
In order to overcome the shortcomings of above-mentioned buoyancy method, application No. is the patents of 201310169226X to provide a kind of variable density
Buoyancy method, measuring medium select magnetic fluid, rock sample are placed in magnetic fluid, and magnetic fluid is adjusted under the action of electromagnetic field
Density, and weight of the rock sample in magnetic fluid under corresponding density is weighed, the total volume of rock sample is further calculated with buoyancy formula.
Preliminary Practice confirms, variable density buoyancy method, which has, is affected by human factors that small, the measurement period is short, applied widely etc.
Technical advantage is a kind of new method with applications well prospect for measuring rock sample total volume.This method in implementation process, according to
The weight in rock sample in magnetic fluid is relied to come the total volume of measure and calculation rock sample, rock sample in magnetic fluid with the variation of magnetic current volume density
Weight is an important parameter, measurement it is accurate whether, directly affect the measurement and computational accuracy of rock sample total volume.
From the point of view of its operating process, rock sample is placed into sample frame, then sample frame is placed into magnetic fluid to (density is
D0), at this point, weighed quality is the quality sum G of rock sample and sample frame in magnetic fluid0(G0=G0 rock sample+G0 frame), when adjusting magnetic
The density of fluid is D1And then the secondary quality sum G for weighing rock sample and sample frame in magnetic fluid1(G1=G1 rock sample+G1 frame), root
According to buoyancy method principle, the volume V=(G of rock sample1 rock sample-G0 rock sample)/(D0-D1)。
But due to adjusting magnetic current volume density front and back, buoyancy suffered by sample frame is different, causes sample frame in magnetic fluid
Quality difference namely G0 frame≠G1 frame, pass through G to further result in1-G0G obtained1 rock sample-G0 rock sampleThere are a G1 frame-G0 frame's
Error.Accordingly, it is determined that G0 frameAnd G1 frameIt is the key that rock sample volume calculates.
From the point of view of usually, it appears that G0 frameAnd G1 frameIt can be easy to obtain, as long as setting weighing device, magnetic fluid Auto-regulating System of Density of Heavy Medium dress
It sets, is respectively D in magnetic current volume density0And D1When weigh the quality of sample frame.But from the work of several rock sample METHOD FOR CONTINUOUS DETERMINATIONs
From the point of view of process, operating environment, it is desirable that obtain the quality information of sample frame and rock sample simultaneously under the same operating conditions, so
It can guarantee working efficiency and measuring accuracy.Therefore, individually weighing sample frame in magnetic current volume density is D0And D1When quality way
And it is not suitable for.
Method mentioned by document (Huang Zhongxi, 2001, the development of underwater weighting system, Chinese medicine physics magazine)
Also it is difficult to meet technology needs designed by this patent.Disclosing one kind application No. is 200710202212.8 patent can examine
The on-line monitoring method and device for surveying forming charcoal block bulk density, the method for relating to determine carbon block weight in water, based on
Calculate the bulk density of carbon block.
Summary of the invention
For the above-mentioned technical problem in the presence of the prior art, the invention proposes rock sample weighing devices in a kind of liquid
And method.According to an aspect of the present invention, rock sample weighing device includes: in the liquid
Magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism, for adjusting the density of magnetic fluid；
Rock sample Weighing mechanism, for measuring the weight for the rock sample being immersed in magnetic fluid；
The rock sample Weighing mechanism includes weighing sections and the sample maintaining part connecting with the weighing sections, and the sample is kept
Portion is arranged in the lower section of the weighing sections, and the sample maintaining part includes identical first supporting part of structure and the second supporting part,
For first supporting part for carrying rock sample, second supporting part is unloaded.
In one embodiment, first supporting part includes the first sample frame and the first sunpender, first sample
The lower section of first sunpender is arranged in frame；Second supporting part includes the second sample frame and the second sunpender, second sample
The lower section of second sunpender is arranged in product frame.
In one embodiment, the first sample frame can be moved up and down along the extending direction of first sunpender；
The second sample frame can be moved up and down along the extending direction of second sunpender.
In one embodiment, magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism includes magnetic field generator and is arranged in the magnetic field
Sample can be maintained in the magnetic fluid in magnetic fluid slot by the magnetic fluid slot near generator, the sample maintaining part.
In one embodiment, the lower section of the magnetic fluid slot is arranged in the magnetic field generator.
According to another aspect of the present invention, rock sample weighing method in a kind of liquid is provided, method includes the following steps:
S1, D is set by magnetic current volume density0, obtain the weight G of rock sampleRock sample；
S2, D is set by the magnetic current volume density1, obtain the weight G of the rock sampleRock sample 1。
In one embodiment, the step S1 includes:
S11, magnetic field strength is adjusted, sets D for the density of the magnetic fluid0；
S12, the first sample frame for carrying the rock sample and vacant the second sample frame are immersed in magnetic
In fluid, and the first sample frame and the second sample frame are adjusted to sustained height；
S13, respectively measurement carry the weight G of the first sample frame of the rock sample, and unloaded second sample
The weight G of product frameFrame；
S14, acquisition magnetic current volume density are D0When rock sample weight GRock sample=G-GFrame。
In one embodiment, it before the step S11, further comprises the steps of:
S10, the top that the first sample frame and the second sample frame are promoted to the magnetic fluid, rock sample is placed
In the first sample frame.
In one embodiment, in the step S12, the first sample frame and the second sample frame are moved through
Journey need to synchronize progress.
In one embodiment, the step S2 includes:
S21, magnetic field strength is adjusted, sets D for the density of magnetic fluid1；
S22, measurement carries the weight G of the first sample frame of the rock sample respectively1, and unloaded second sample
The weight G of product frameFrame 1；
S23, acquisition magnetic current volume density are D1When rock sample weight GRock sample 1=G1-GFrame 1。
Compared with the prior art, the advantages of the present invention are as follows 1) qualitative data of rock sample in a liquid is accurately obtained, it is rock
The calculating of sample total volume and porosity lays the foundation；2) there is no particular/special requirement to the shape of rock sample, for plunger, bulk, particle
Shape rock sample has wide applicability；3) the independent test wrapper of sample frame weight under different test conditions in magnetic fluid has been evaded
Section avoids the generation of human error, improves rock sample total volume measuring accuracy, shortens test period.The test of the application fills
Set that structure is simple, is affected by human factors that small, operation link is few, it is few to employ equipment, simply and rapidly measures variable density liquid
The weight of rock sample in body lays the foundation for rock sample total volume Accurate Determining, preferably meets oil-gas geology research requirements of one's work.
Detailed description of the invention
The preferred embodiment of the present invention is described in detail below in conjunction with attached drawing.In figure:
Fig. 1 shows the structural schematic diagram of rock sample weighing device in a kind of liquid according to an embodiment of the present invention.
Fig. 2 shows the flow chart of rock sample weighing method in a kind of liquid according to an embodiment of the present invention.
In the accompanying drawings, identical component uses identical appended drawing reference.The attached drawing is not drawn according to the actual ratio.
Specific embodiment
Below in conjunction with attached drawing, the present invention will be further described.
Fig. 1 shows that rock sample weighing device in liquid according to the present invention, the device include magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism 1
With rock sample Weighing mechanism 2.Magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism 1 is used to control the density of magnetic fluid, and rock sample Weighing mechanism 2 is for measuring
It is immersed in the weight of the rock sample 3 in magnetic fluid.
Rock sample Weighing mechanism 2 includes weighing sections 21 and the sample maintaining part 22 connecting with weighing sections 21, sample maintaining part 22
The lower section of weighing sections 21 is set, sample maintaining part 22 includes identical first supporting part 221 of structure and the second supporting part 222,
For first supporting part 221 for carrying rock sample 3, the second supporting part 222 is vacant.The device does not have particular/special requirement to the shape of rock sample,
There is wide applicability for plunger, bulk, graininess rock sample.
By identical first supporting part of setting structure and the second supporting part, allow the device to accurately measure in difference
The weight of sample frame under magnetic current volume density is evaded to further determine that the weight of the rock sample under different magnetic current volume densitys
The independent testing process of sample frame weight under different test conditions in magnetic fluid, avoids the generation of human error, improves rock
Sample total volume measuring accuracy, shortens test period.It lays the foundation for rock sample total volume Accurate Determining, with preferably meeting oil gas
The needs of matter research work.
In one embodiment, the first supporting part 221 includes the first sample frame 2231 and the first sunpender 2241, the first sample frame
2231 are arranged in the lower section of the first sunpender 2241.Likewise, the second supporting part 222 includes the second sample frame 2232 and the second sunpender
2242, the lower section of the second sunpender 2242 is arranged in the second sample frame 2232.The knot of first supporting part 221 and the second supporting part 222
Structure, material, size etc. are identical, and in magnetic fluid, and whether resting state or the movement state risen or fallen, are both needed to make
First supporting part 221 and the second supporting part 222 are located at sustained height.To guarantee that magnetic fluid is identical to its effect, to protect
Card is in magnetic fluid, and no matter whether magnetic field generator works, and the quality of the first sample frame 2231 and the second sample frame 2232 is kept
It is identical.
Wherein, rock sample 3 to be measured is placed in the first sample frame 2231, the second sample frame 2232 is unloaded.Or it should be understood that
First sample frame 2231 is unloaded, places rock sample 3 to be measured in the second sample frame 2232.
In one embodiment, the first sample frame 2231 can be moved up and down along the direction of the first sunpender 2241, the second sample
Frame 2232 can be moved up and down along the direction of the second sunpender 2242.When starting test, by the first sample frame 2231 and the second sample
Frame 2241 synchronizes the top for rising to magnetic fluid, after rock sample 3 is put into the first sample frame 2231, by 2231 He of the first sample frame
Second sample frame 2241 is gradually reduced and is submerged in magnetic fluid, meanwhile, by the height and second of the first sample frame 2231
The height of sample frame 2232 is adjusted to sustained height.
In one embodiment, magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism 1 includes magnetic field generator 11 and is arranged in magnetic field generator 11
Rock sample 3 can be maintained in the magnetic fluid 13 of magnetic fluid slot 12 by neighbouring magnetic fluid slot 12, sample maintaining part 22.Preferably,
The lower section of magnetic fluid slot 12 is arranged in magnetic field generator 11, for adjusting the density of the magnetic fluid in magnetic fluid slot 12.
According to another aspect of the present invention, a kind of method of rock sample weighing in liquid is provided, this method includes following step
It is rapid:
S1, D is set by magnetic current volume density0, obtain the weight G of rock sampleRock sample；
S2, D is set by magnetic current volume density1, obtain the weight G of the rock sampleRock sample 1。
In one embodiment, step S1 includes:
S11, magnetic field strength is adjusted, sets D for the density of magnetic fluid0；
S12, the first sample frame 2231 for carrying rock sample and the second vacant sample frame 2232 are immersed in magnetic fluid
In, and the first sample frame 2231 and the second sample frame 2232 are adjusted and arrive sustained height；
S13, respectively measurement carry the weight G of the first sample frame 2231 of rock sample, and the second unloaded sample frame 2232
Weight GFrame；
S14, acquisition magnetic current volume density are D0When rock sample weight GRock sample=G-GFrame。
In one embodiment, it before step S11, further comprises the steps of:
S10, the top that the first sample frame 2231 and the second sample frame 2232 are promoted to magnetic fluid, rock sample 3 is placed in
In first sample frame 2231.
In one embodiment, in step S12, the first sample frame 2231 needs synchronous with the moving process of the second sample frame 2232
It carries out.
In one embodiment, step S2 includes:
S21, magnetic field strength is adjusted, sets D for the density of magnetic fluid1；
S22, measurement carries the weight G of the first sample frame 2231 of rock sample 3 respectively1With the second unloaded sample frame 2232
Weight GFrame 1；
S23, acquisition magnetic current volume density are D1When rock sample weight GRock sample 1=G1-GFrame 1。
If necessary to obtain weight of the N group rock sample under different magnetic current volume densitys, then repeatedly step S2.
In a preferred embodiment, the process of rock sample weighing is as follows:
1) the first sample frame 2231 and the second sample frame 2232 are promoted to the top of magnetic fluid, rock sample is placed in first
In sample frame 2231；
2) magnetic field strength is adjusted, sets D for the density of magnetic fluid0；
3) the first sample frame 2231 for carrying rock sample and the second unloaded sample frame 2232 are immersed in magnetic fluid,
And the first sample frame 2231 and the second sample frame 2232 are adjusted and arrive sustained height；
4) respectively measurement carry rock sample the first sample frame 2231 weight G, and unloaded the second sample frame 2232
Weight GFrame；
5) obtaining magnetic current volume density is D0When rock sample weight GRock sample=G-GFrame；
6) magnetic field strength is adjusted, sets D for the density of magnetic fluid1；
7) the weight G for carrying the first sample frame 2231 of rock sample is measured respectively1, and the second unloaded sample frame 2232
Weight GFrame 1；
8) obtaining magnetic current volume density is D1When rock sample weight GRock sample 1=G1-GFrame 1；
Repeating the above process 6) -8) acquisition magnetic current volume density is DNUnder the conditions of rock sample weight GRock sample N.It is calculated using volume
Formula: V=(GN rock sample-G(N-1) rock sample/(D(N-1)-DN).According to the weight of the rock sample under the different magnetic fluid density conditions of the N group got
Amount, calculates the volume of N-1 group rock sample, these volumes may identical or slightly difference, can verify mutually, can also be by taking calculation
The mode of art average value finally determines rock sample volume.
The foregoing is merely the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, Ren Heben
The technical staff in field can be easy to carry out and be altered or varied in technical scope disclosed by the invention, and this change or change
Change should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. rock sample weighing device in a kind of liquid characterized by comprising
Magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism, for adjusting the density of magnetic fluid；
Rock sample Weighing mechanism, for measuring the weight for the rock sample being immersed in magnetic fluid；
The rock sample Weighing mechanism includes weighing sections and the sample maintaining part connecting with the weighing sections, and the sample maintaining part is set
It sets in the lower section of the weighing sections, the sample maintaining part includes identical first supporting part of structure and the second supporting part, described
For first supporting part for carrying rock sample, second supporting part is unloaded.
2. rock sample weighing device in liquid according to claim 1, which is characterized in that first supporting part includes first
The lower section of first sunpender is arranged in sample frame and the first sunpender, the first sample frame；Second supporting part includes the
The lower section of second sunpender is arranged in two sample frames and the second sunpender, the second sample frame.
3. rock sample weighing device in liquid according to claim 2, which is characterized in that the first sample frame can be along institute
The extending direction for stating the first sunpender moves up and down；The second sample frame can move down on the extending direction of second sunpender
It is dynamic.
4. rock sample weighing device in liquid according to claim 1, which is characterized in that magnetic fluid Auto-regulating System of Density of Heavy Medium mechanism
Including magnetic field generator and the magnetic fluid slot being arranged near the magnetic field generator, the sample maintaining part can protect sample
It holds in the magnetic fluid in magnetic fluid slot.
5. rock sample weighing device in liquid according to claim 4, which is characterized in that the magnetic field generator is arranged in institute
State the lower section of magnetic fluid slot.
6. a kind of method that rock sample weighing device carries out rock sample weighing in liquid according to any one of claims 1-5,
Characterized by comprising the following steps:
S1, D is set by magnetic current volume density0, obtain the weight G of rock sampleRock sample；
S2, D is set by the magnetic current volume density1, obtain the weight G of the rock sampleRock sample 1。
7. according to the method described in claim 6, it is characterized in that, the step S1 includes:
S11, magnetic field strength is adjusted, sets D for the density of the magnetic fluid0；
S12, the first sample frame for carrying the rock sample and vacant the second sample frame are immersed in magnetic fluid
In, and the first sample frame and the second sample frame are adjusted to sustained height；
S13, respectively measurement carry the weight G of the first sample frame of the rock sample, and unloaded the second sample frame
Weight GFrame；
S14, acquisition magnetic current volume density are D0When rock sample weight GRock sample=G-GFrame。
8. the method according to the description of claim 7 is characterized in that being further comprised the steps of: before the step S11
S10, the top that the first sample frame and the second sample frame are promoted to the magnetic fluid, are placed in institute for rock sample
It states in the first sample frame.
9. according to the method described in claim 8, it is characterized in that, in the step S12, the first sample frame and described
The moving process of two sample frames need to synchronize progress.
10. according to the method described in claim 6, it is characterized in that, the step S2 includes:
S21, magnetic field strength is adjusted, sets D for the density of magnetic fluid1；
S22, measurement carries the weight G of the first sample frame of the rock sample respectively1, and unloaded the second sample frame
Weight GFrame 1；
S23, acquisition magnetic current volume density are D1When rock sample weight GRock sample 1=G1-GFrame 1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810471586.8A CN110501251A (en) | 2018-05-17 | 2018-05-17 | Rock sample weighing device and method in a kind of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810471586.8A CN110501251A (en) | 2018-05-17 | 2018-05-17 | Rock sample weighing device and method in a kind of liquid |
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| CN110501251A true CN110501251A (en) | 2019-11-26 |
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| CN201810471586.8A Pending CN110501251A (en) | 2018-05-17 | 2018-05-17 | Rock sample weighing device and method in a kind of liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113125302A (en) * | 2021-04-27 | 2021-07-16 | 朱立岩 | Device for measuring buoyancy ratio of jewelry |
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| CN107014718A (en) * | 2017-06-08 | 2017-08-04 | 中山大学 | A kind of Quantitative measurement method of wire's welding trace inner void |
| CN206479226U (en) * | 2017-02-09 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of rock sample volume analyzer |
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| CN1320814A (en) * | 2001-05-25 | 2001-11-07 | 清华大学 | Method and equipment for real-time measurement of volume variation in polymerizing reaction by floatage method |
| CN101046436A (en) * | 2006-03-31 | 2007-10-03 | 上海神开石油科技有限公司 | Mudstone density measuring process |
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| CN205300691U (en) * | 2015-11-24 | 2016-06-08 | 中国石油化工股份有限公司 | Total volume measuring device of wet -type rock core |
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Application publication date: 20191126 |