CN203595649U - Compact rock particle volume measuring device - Google Patents
Compact rock particle volume measuring device Download PDFInfo
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- CN203595649U CN203595649U CN201320576611.1U CN201320576611U CN203595649U CN 203595649 U CN203595649 U CN 203595649U CN 201320576611 U CN201320576611 U CN 201320576611U CN 203595649 U CN203595649 U CN 203595649U
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- sample
- particle volume
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- cylinder
- rock particle
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- 239000011435 rock Substances 0.000 title claims abstract description 96
- 239000002245 particle Substances 0.000 title claims abstract description 56
- 238000011161 development Methods 0.000 abstract description 4
- 238000005065 mining Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 27
- 239000011148 porous material Substances 0.000 description 7
- 238000003556 assay Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a fine and close rock particle volume survey device, including reference jar (3) and sample jar (4), reference jar (3) and sample jar (4) can be through the pipeline intercommunication, and this fine and close rock particle volume survey device is still including being used for vacuum pump (2) to reference jar (3) and sample jar (4) evacuation. The compact rock particle volume measuring device has the advantages of short measuring time, high measuring precision and the like. The method is suitable for measuring the porosity of the compact rock in the laboratory in the fields of petroleum, geology and mining industry, is beneficial to evaluating the resource quantity of the shale gas and the compact sandstone, and can be used for exploration and development of the shale gas and the compact sandstone.
Description
Technical field
The utility model relates to oil exploitation experimental technique field, particularly a kind of compacted rock particle volume determinator that is applicable to oil, geology, mining industry field and carries out in laboratory the mensuration of the factor of porosity of the compacted rocks such as shale, tight sand, coal.
Background technology
Shale gas, compact sandstone gas belong to unconventional rock gas, and the reservoir pore space of its rock gas is mainly take nanoscale as main, have low hole, hypotonic feature.Factor of porosity be shale gas, compact sandstone gas favo(u)rable target district preferably, one of the key parameter of evaluating reservoir and capability forecasting.Therefore,, how accurately the factor of porosity of Quick Measurement shale or tight sand has important practical significance to exploratory development.
The helium of conventional sandstone is measured factor of porosity method of testing: the piston-shaped rock core that is 2.5cm by diameter, put into sample chamber, and along with helium permeability is when inner to rock core, the volume of sample chamber can decline.Calculate the size of volume of voids according to Boyle law, then obtain factor of porosity.Because the compacted rocks such as shale, tight sand, coal are very fine and close, pore connectivity and perviousness are all very poor, therefore,, if utilize the helium of conventional sandstone to measure factor of porosity method of testing, gas is penetrated into the time that needs several days or tens days in the hole of rock core inside completely.Meanwhile, the pore connectivity of compacted rock is poor, non-open pore is difficult for determined, causes measured value less than normal.
Utility model content
Be not suitable for measuring the technical matters of compacted rock in order to solve the device of existing measurement rock porosity, the utility model provides a kind of compacted rock particle volume determinator.It is short that this compacted rock particle volume determinator has the test duration, measuring accuracy advantages of higher.
The utility model is that the technical scheme that solves its technical matters employing is: a kind of compacted rock particle volume determinator, comprise reference cylinder and sample cylinder, reference cylinder and sample cylinder can be communicated with by pipeline, and this compacted rock particle volume determinator also comprises the vacuum pump for reference cylinder and sample cylinder are vacuumized.
This compacted rock particle volume determinator also comprises for the source of the gas to reference cylinder and sample cylinder air feed.
Between source of the gas and reference cylinder, be provided with valve.
Source of the gas is connected with tensimeter.
Between vacuum pump and reference cylinder, be provided with valve.
This compacted rock particle volume determinator also comprises the tensimeter for measuring reference in-cylinder pressure.
This compacted rock particle volume determinator also comprises the tensimeter for measuring sample cylinder internal pressure.
Between reference cylinder and sample cylinder, be provided with valve.
The beneficial effects of the utility model are: compacted rock particle volume determinator provided by the utility model has adopted in use sample is carried out to broken mode, and sample can be measured the non-open pore before pulverizing in mud shale after pulverizing; And, the utility model distilled extracting to sample before measuring factor of porosity, eliminate moisture and the impact of oil on measured value in rock, thereby made measured value more approach actual conditions, assay method and the computing formula of rock particles volume that the utility model is clear and definite.Thereby the compacted rock particle volume determinator that the utility model provides is more suitable for oil, geology, mining industry field carries out compact rock porosity mensuration in laboratory, contribute to, to shale gas, tight sand RESERVE EVALUATION, can serve the exploratory development of shale gas, compact sandstone gas.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, compacted rock particle volume determinator described in the utility model is described in further detail.
Fig. 1 is the structural representation of compacted rock particle volume determinator.
Wherein 1. sources of the gas, 2. vacuum pump, 3. reference cylinder, 4. sample cylinder, 5. tensimeter, 6. tensimeter, 7. valve, 8. valve, 9. valve, 10. valve, 11. valves, 12. tensimeters, the particle of 13. part rock sample to be measured.
Embodiment
For the ease of understanding the course of work of compacted rock particle volume determinator described in the utility model, the assay method of a kind of compact rock porosity of paper, comprises the following steps:
Step 1: choose rock sample to be measured, remove water and oil in this rock sample to be measured;
Step 2: the pseudodensity ρ that measures the part rock sample to be measured in this rock sample to be measured
b;
Step 3: after rock sample to be measured this part is pulverized, measure the volume V of the particle of this part rock sample to be measured
g;
Step 4: the factor of porosity that calculates this rock sample to be measured by following formula ():
In formula (), Φ is factor of porosity, and unit is %; V
bfor the cumulative volume of this part rock sample to be measured in step 2,
unit is cm
3; M is the quality of this part rock sample to be measured in step 2, and unit is g; V
gfor the volume of particle of this part rock sample to be measured after pulverizing in step 3, unit is cm
3; ρ
bfor the pseudodensity unit of part rock sample to be measured is g/cm
3.
The assay method of this compact rock porosity, has adopted sample has been carried out to broken mode, and sample can be measured the non-open pore before pulverizing in mud shale after pulverizing; And, the utility model distilled extracting to sample before measuring factor of porosity, eliminate moisture and the impact of oil on measured value in rock, thereby made measured value more approach actual conditions, assay method and the computing formula of rock particles volume that the utility model is clear and definite.Thereby the assay method of the compact rock porosity that the utility model provides is more suitable for oil, geology, mining industry field carries out compact rock porosity mensuration in laboratory, contribute to, to shale gas, tight sand RESERVE EVALUATION, can serve the exploratory development of shale gas, compact sandstone gas.
In step 1, rock sample to be measured is monoblock rock sample to be measured, and the quality of rock sample to be measured is 100g～200g.In step 1, adopt Dean-Stark extraction element to remove water and the oil in this rock sample to be measured.Rock sample to be measured is distilled to extracting and can better remove water and the oil in rock sample hole to be measured.
Between step 1 and step 2, also comprise this rock sample to be measured is dried.Be about to through distillation extracting rock sample to be measured at 105 ℃～110 ℃ freeze-day with constant temperature to steady quality.Described measurement pseudodensity ρ in step 2
bto get monoblock rock sample to be measured to adopt Density Measuring Instrument directly to measure the pseudodensity ρ of this monoblock rock sample to be measured
b.
In step 3, sample is crushed to the non-open pore of minimum that granularity is less than or equal to rock sample to be measured, after described this part rock sample to be measured is pulverized, the particle diameter of the particle of this part rock sample to be measured is 1mm～5mm.The particle of this part rock sample to be measured is exactly the particle that this part rock sample to be measured is pulverized rear this part rock sample to be measured obtaining.
In step 3, measure the volume V of the particle of this part rock sample to be measured
gadopt compacted rock particle volume determinator described in the utility model, this compacted rock particle volume determinator comprises reference cylinder 3 and sample cylinder 4, as shown in Figure 1, reference cylinder 3 and sample cylinder 4 can be communicated with by pipeline, measure the volume V of the particle of this part rock sample to be measured
gcomprise the following steps:
Step 3.1: the volume V of measuring respectively reference cylinder 3 and sample cylinder 4
r, V
s;
Step 3.2: pack the particle 13 of this part rock sample to be measured after pulverizing into sample cylinder 4;
Step 3.3: reference cylinder 3 and sample cylinder 4 are vacuumized simultaneously, record the original pressure P in sample cylinder 4
o;
Step 3.4: only to the interior injecting gas of reference cylinder 3, record the original pressure P in reference cylinder 3
ro;
Step 3.5: reference cylinder 3 and sample cylinder 4 are communicated with, in the time that the force value in reference cylinder 3 and sample cylinder 4 reaches balance, record the equalized pressure P in reference cylinder 3 and sample cylinder 4
e;
Step 3.6: the volume that calculates the particle of this part rock sample to be measured by following formula (two):
In formula (two), V
rfor the volume of reference cylinder 3, unit is cm
3; V
sfor the volume of sample cylinder 4, unit is cm
3; P
ofor the original pressure in sample cylinder 4, unit is Mpa; P
rofor the original pressure in reference cylinder 3, unit is Mpa; P
efor the equalized pressure in reference cylinder 3 and sample cylinder 4, unit is Mpa; Z
rofor P
rogas Compression Factor under pressure; Z
ofor P
ogas Compression Factor under pressure; Z
efor P
egas Compression Factor under pressure.P
rogas Compression Factor Z under pressure
ro, P
ogas Compression Factor Z under pressure
o, P
egas Compression Factor Z under pressure
eall can obtain by tabling look-up.
Concrete, as shown in Figure 1, this compacted rock particle volume determinator comprises reference cylinder 3 and sample cylinder 4, and reference cylinder 3 and sample cylinder 4 can be communicated with by pipeline, and this compacted rock particle volume determinator also comprises the vacuum pump 2 for reference cylinder 3 and sample cylinder 4 are vacuumized.
This compacted rock particle volume determinator also comprises for the source of the gas 1 to reference cylinder 3 and sample cylinder 4 air feed.Between source of the gas 1 and reference cylinder 3, be provided with valve 11 and valve 8.Source of the gas 1 is connected with tensimeter 12.Between vacuum pump 2 and reference cylinder 3, be provided with valve 7 and valve 8.This compacted rock particle volume determinator also comprises the tensimeter 5 for measuring reference cylinder 3 internal pressures.This compacted rock particle volume determinator also comprises the tensimeter 6 for measuring sample cylinder 4 internal pressures.Between reference cylinder 3 and sample cylinder 4, be provided with valve 9.This compacted rock particle volume determinator also comprises valve 10.
Concrete, measure the volume V of the particle of this part rock sample to be measured
gstep be: before sample test, first will measure the volume of reference cylinder 3 and sample cylinder 4, obtaining respectively volume is V
rand V
s.After sample after treatment step 3 is pulverized, filter out the about 50g of sample of 1mm～5mm grain size, pack the particle 13 of this part rock sample to be measured into sample cylinder 4, open valve 7, valve 8, valve 9, valve-off 10, valve 11, utilize vacuum pump 2 to vacuumize, shut valve 7, valve 9 after vacuumizing, the pressure that records sample cylinder 4 is P
o, open valve 11 to the helium that is filled with certain pressure in reference cylinder 3, valve-off 11, recording pressure is P
ro.Open the valve 9 between reference cylinder 3 and sample cylinder 4, wait for severally after tens minutes, when pressure reaches balance, recording pressure is P
e.Finally open valve 10, discharge helium, finish test.
According to the quantitative PV=nRT principle of Robert Boyle, can obtain the relation of pressure equilibrium front and back, see formula (three)
After arrangement, can obtain particle volume is computing formula (two):
According to specific embodiments of the present utility model, in compact rock porosity assay method described in the utility model, in described step 4, be to utilize the particle volume V measuring
gwith rock cumulative volume V
b, calculate the factor of porosity Φ of this compacted rock with formula ().
The above; be only specific embodiment of the utility model, can not limit the scope that utility model is implemented with it, so the displacement of its equivalent assemblies; or equivalent variations and the modification done according to the utility model scope of patent protection, all should still belong to the category that this patent is contained.
Claims (8)
1. a compacted rock particle volume determinator, it is characterized in that: this compacted rock particle volume determinator comprises reference cylinder (3) and sample cylinder (4), reference cylinder (3) and sample cylinder (4) can be communicated with by pipeline, and this compacted rock particle volume determinator also comprises the vacuum pump (2) for reference cylinder (3) and sample cylinder (4) are vacuumized.
2. compacted rock particle volume determinator according to claim 1, is characterized in that: this compacted rock particle volume determinator also comprises for the source of the gas (1) to reference cylinder (3) and sample cylinder (4) air feed.
3. compacted rock particle volume determinator according to claim 2, is characterized in that: between source of the gas (1) and reference cylinder (3), be provided with valve (11,8).
4. compacted rock particle volume determinator according to claim 2, is characterized in that: source of the gas (1) is connected with tensimeter (12).
5. compacted rock particle volume determinator according to claim 1, is characterized in that: between vacuum pump (2) and reference cylinder (3), be provided with valve (7,8).
6. compacted rock particle volume determinator according to claim 1, is characterized in that: this compacted rock particle volume determinator also comprises the tensimeter (5) for measuring reference cylinder (3) internal pressure.
7. compacted rock particle volume determinator according to claim 1, is characterized in that: this compacted rock particle volume determinator also comprises the tensimeter (6) for measuring sample cylinder (4) internal pressure.
8. compacted rock particle volume determinator according to claim 1, is characterized in that: between reference cylinder (3) and sample cylinder (4), be provided with valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320576611.1U CN203595649U (en) | 2013-09-17 | 2013-09-17 | Compact rock particle volume measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320576611.1U CN203595649U (en) | 2013-09-17 | 2013-09-17 | Compact rock particle volume measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN203595649U true CN203595649U (en) | 2014-05-14 |
Family
ID=50676519
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|---|---|---|---|
| CN201320576611.1U Expired - Fee Related CN203595649U (en) | 2013-09-17 | 2013-09-17 | Compact rock particle volume measuring device |
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| Country | Link |
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| CN (1) | CN203595649U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891087A (en) * | 2016-04-15 | 2016-08-24 | 西南石油大学 | Device and method for measuring porosity and grain breakage rate of compressed piled sand |
| CN108956943A (en) * | 2018-06-20 | 2018-12-07 | 中国石油天然气股份有限公司 | Method and device for measuring coal rock cleat compression coefficient |
| CN109115667A (en) * | 2018-09-20 | 2019-01-01 | 中国石油天然气股份有限公司 | Rock porosity measuring device, method and system |
| CN110095397A (en) * | 2019-04-26 | 2019-08-06 | 四川杰瑞泰克科技有限公司 | The multi-functional full-automatic shale gas gaging hole porosity measurement method of GRT-1 type and device |
-
2013
- 2013-09-17 CN CN201320576611.1U patent/CN203595649U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891087A (en) * | 2016-04-15 | 2016-08-24 | 西南石油大学 | Device and method for measuring porosity and grain breakage rate of compressed piled sand |
| CN105891087B (en) * | 2016-04-15 | 2018-06-22 | 西南石油大学 | A kind of device and method for measuring be pressurized accumulation sand body porosity and Particle Breakage rate |
| CN108956943A (en) * | 2018-06-20 | 2018-12-07 | 中国石油天然气股份有限公司 | Method and device for measuring coal rock cleat compression coefficient |
| CN109115667A (en) * | 2018-09-20 | 2019-01-01 | 中国石油天然气股份有限公司 | Rock porosity measuring device, method and system |
| CN109115667B (en) * | 2018-09-20 | 2021-08-03 | 中国石油天然气股份有限公司 | Rock porosity determination method and system |
| CN110095397A (en) * | 2019-04-26 | 2019-08-06 | 四川杰瑞泰克科技有限公司 | The multi-functional full-automatic shale gas gaging hole porosity measurement method of GRT-1 type and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140514 Termination date: 20210917 |