CN206321530U - A kind of shale air content test device - Google Patents
A kind of shale air content test device Download PDFInfo
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- CN206321530U CN206321530U CN201621446488.1U CN201621446488U CN206321530U CN 206321530 U CN206321530 U CN 206321530U CN 201621446488 U CN201621446488 U CN 201621446488U CN 206321530 U CN206321530 U CN 206321530U
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Abstract
A kind of shale air content test device, including the methane gas cylinder, gas boosting pump and six-way valve by being sequentially connected, six-way valve parallel high voltage parses tank and high-pressure water tank, high pressure parsing tank is connected with high-pressure water tank through valve, six-way valve is provided with pressure gauge, high pressure parsing tank is provided with valve, high pressure parses tank and connects high pressure water tank through pipeline valve, high pressure water tank outlet water collector, water collector is arranged on electronic balance, and gas boosting pump can will be delivered to high pressure parsing tank and high-pressure water tank after the gas pressurized in methane gas cylinder；When pressure reaches predetermined pressure, valve is closed；The natural gas parsed during desorption enters in high pressure water tank, promotes water to enter electronic balance after water collector, weight change and senses pressure, sends data to computer recording；Pressure in rock core is returned to strata pressure by the utility model, it is ensured that the rock core pressure for starting the parsing moment is consistent with underground, and the air content measured is true and reliable air content.
Description
Technical field
The utility model is related to petroleum gas and exploration and development technical field, more particularly to a kind of shale air content test
Device.
Background technology
Shale gas is that one kind is present in shale, and the unconventional gas resource of storage is born from certainly.Evaluate whether shale has
Reserves are industrialized, air content is a very important parameter.Effectively to evaluate somewhere whether have it is industrialized before
Scape, it is necessary to set up accurate air content evaluating data, it is pre- that these air content data are used for evaluating reservoir, resource assessment and production
Survey.Shale air content is have to be understood that for this, air content is accurately tested, it is necessary to which shale gassiness will can accurately be tested by providing one kind
The method and apparatus equipment of amount.Because Chinese shale reservoir buried depth is big, strata pressure is high, 3%~5% porosity condition
Under, the free tolerance in shale gas mesopore is far longer than tolerance of the absorption in pore surface, during drilling and coring delivery, due to
Rock core peripheral pressure declines, and the gases at high pressure in rock core can be escaped from rock core automatically, and pore pressure is decreased.This mistake
Journey and coal petrography are cored completely different, and seldom, free gas is few, and coal bed gas well is shallower, and the time of coring is short for the hole of coal petrography, because
This loss gas is less.Conventional shale gas gassiness analysis method and instrument is all based on Gas In Coalbed Gas Content method of testing, no
Meet the special situation of shale, obtained credible result degree is relatively low, endures query to the fullest extent.Therefore, how the true of shale is accurately tested
Air content just seems extremely important in exploration and development.
At present, domestic and international shale gas measurement of air content is the site desorption as Gas In Coalbed Gas Content method of testing
Method.Its theoretical foundation and experimental evidence be, rate of release and time of the gas in coal petrography in early stage desorption process it is flat
Root is directly proportional, and the rock core gas that lifting process is lost in the wellbore can be calculated accordingly, and total air content is then the damage of early stage
Lose gas and add stripping gas and residual volume sum.
Up to now, domestic and international air content experimental apparatus for testing mainly has full-automatic gas content U.S. Terratek
Company manufactures and domestic live content measurement equipment.Air content tester both domestic and external is all to be drilled through in rock core from underground,
Lifted to ground and start test.Because shale is buried after depth, underground drilling coring, the lifting time is long, and free gas windage is big.
The method for solving this problem is that USBM methods are fitted by linearity range, according to the one loss time of lifting time estimation, by line
Property elongated segment to estimation the loss time, obtain one loss tolerance.Because the linearity range of desorption curve is not by origin, linearly
The extrapolation of section can obtain an irrational result, that is, the gas desorption quantity that actual test is arrived may be far longer than by losing tolerance.Mesh
The live air content test result of preceding all air content measuring units all shows that the 80% of shale air content is even more all to damage more
Lose tolerance, actual test to gas desorption quantity only account for less than the 20% of total air content, and test result is generally relatively low, it is impossible to close
The true air content of reason reflection underground.
The content of the invention
Significantly decline to overcome conventional gassiness to measure rock core pressure in method and process, what loss gas was difficult to determine lacks
Point, the purpose of this utility model is to provide a kind of shale air content test device, and the shale core that well head is obtained loads high
Pressure solution cucurbitula, is pumped into rock core so that the natural gas of escape is come back in rock core, and pressure reaches stratum using booster pump by methane
Pressure, starts desorption under high pressure, and resolver can adapt to high pressure desorption default flows height, and the characteristics of pressure is high utilizes gas
Water volume and the equiponderant principle of water that body volume is excluded, are the survey to the cumulative weight of water by the test conversion of air content
Examination, can obtain reliable test data, improve shale gas regional evaluation, the accuracy of gas storage capability evaluation.
In order to achieve the above object, the technical solution of the utility model is：
A kind of shale air content test device, including be sequentially connected by pipeline 6 methane gas cylinder 1, the and of gas boosting pump 2
Six-way valve 3, two other interface of six-way valve 3 connects K51 mouths and water under high pressure that high pressure parses tank 5 through valve A, valve D respectively
The K71 mouths of tank 7, the K54 mouths of high pressure parsing tank 5 are connected with the K72 mouths of high-pressure water tank 7 by pipeline 6, and on the pipeline of connection
Valve C is provided with, the 4th mouthful of six-way valve 3 is provided with pressure gauge 4, and the K53 mouths of high pressure parsing tank 5 are provided with valve B, high pressure solution
The K52 ports of export of analysis tank 5 connect through pipeline and stretch into the bottom of high pressure water tank 8, and are provided with valve E on the pipeline of connection,
The top exit of high pressure water tank 8 connects the entrance of water collector 9, and water collector 9 is arranged on electronic balance 10, electronic balance
10 signal output point connection computer 12.
Gas pressure in described methane gas cylinder 1 is 15MPa.
The rated insulation voltage limit of described high pressure parsing tank 5 is 60MPa.
The rated insulation voltage limit of described high-pressure water tank 7 is 60MPa.
The rated insulation voltage limit of described high pressure water tank 8 is 5MPa.
The precision 0.1g of described electronic balance 10, voltage 24V, power 12W.
Described computer 12 has automatic data collection and preserves data, the function of being gathered according to the time series of setting.
The beneficial effects of the utility model are：
The 1st, a kind of shale air content high precision measurement method can be provided, reliable test data is obtained, shale storage is improved
Layer is evaluated, the accuracy of exploitation potential assessment.
2nd, rock core pressure can be returned to strata pressure so that the rock core state at test moment is consistent with underground, obtained
Real air content data.
3rd, the test of the fast samples of 5-10, efficiency high can be carried out simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Reference picture 1, a kind of shale air content test device, including be sequentially connected by gas transmission line methane gas cylinder 1, gas
Body booster pump 2 and six-way valve 3, two other interface of six-way valve 3 connect high pressure parsing tank 5 with valve D through valve A respectively
K51 mouthfuls and the K71 mouths of high-pressure water tank 7, the K53 mouths of high pressure parsing tank 5 are connected with the K72 mouths of high-pressure water tank 7 by pipeline 6,
And valve C is provided with the pipeline of connection, the 4th mouthful of six-way valve 3 is provided with pressure gauge 4, and the K52 outlets of high pressure parsing tank 5 are set
Valve B is equipped with, the K52 outlet ports of high pressure parsing tank 5 connect through pipeline and stretch into the bottom of high pressure water tank 8, and connection
Valve E is provided with pipeline, the top exit of high pressure water tank 8 connects the entrance of water collector 9, and water collector 9 is arranged on electricity
On sub- balance 10, the signal output point connection computer 12 of electronic balance 10.
Gas pressure in described methane gas cylinder 1 is 15MPa.
Air pressure can be increased to 80MPa by gas boosting pump.
Manometric pressure indicating range is 0MPa~80MPa.
Described high pressure parses a diameter of 12cm of tank 5, and the length of high pressure parsing tank 5 is 20cm, and high pressure parses the volume of tank 5
The fixed pressure-resistant limit is 60MPa.
A diameter of 14cm of described high-pressure water tank 7, the height of high-pressure water tank 7 is 45cm, the rated insulation voltage of high-pressure water tank 7
The limit is 60MPa.
A diameter of 20cm of described high pressure water tank 8, the height of high pressure water tank 8 is 30cm, the volume of high pressure water tank 8
The fixed pressure-resistant limit is 5MPa.
The diameter 15cm of described water collector 9, height 20cm.3500 milliliters of volume.
Weighing capacity the journey 3000g, precision 0.1g, voltage 24V, power 12W of described electronic balance 10.
Described computer 12 has automatic data collection and preserves data, the function of being gathered according to the time series of setting.
Operation principle of the present utility model is：
1 pressurization stages：Rock core is first loaded into high pressure parsing tank 5, valve A and valve D is opened, close valve B, valve C and
Valve E, sets the pressure of booster pump, starts booster pump 2, opens methane gas cylinder 1, parses and is filled in tank 5 and high-pressure water tank 7 to high pressure
Natural gas injection so that the pressure of water reaches setting pressure in high-pressure water tank 5 and 7；Then valve C is opened, valve A is closed, opened
Water in valve B, high-pressure water tank 7 enters in high pressure parsing tank, and the natural gas between driving rock core and parsing tank in annular space passes through
Valve B flows out, until water replaces out the gas in annular space completely, closes valve B, valve C；
2 resolution phases：Valve E is opened during desorption, the natural gas parsed enters 8 in high pressure water tank, promotes water to enter
Electronic balance 10 senses pressure after water collector 9, weight change, sends data to computer and software, record desorption number
According to.
The utility model overcomes current tolerance method of testing rock core pore pressure and declined, and free gas largely loses, can not
The shortcoming of the method counting loss gas leaned on, can carry out shale core go out after well by rock core be put into high pressure parsing tank carry out pressure it is extensive
It is multiple so that the rock core pore pressure at parsing moment is consistent with reservoir pressure.The air content data of acquisition are more true.This practicality is new
Type improves the precision of air content test, and basic data is provided for shale gas regional evaluation, exploitation potential assessment, can be simultaneously to 5-
10 shale gas samples pressurize and parsed simultaneously, improve testing efficiency.
According to above-mentioned principle, successfully carry out live shale core pore pressure and resumed work and annular space gas displacement,
Then air content test device is accessed, carries out desorption experiment.Profit in certain shale gas air content project with other measuring units
The result obtained with Gas In Coalbed Gas Content method of testing and instrument is compared, and comparing result shows that this method and device not only can
Enough smoothly completing live 5-10 sample, pressure recovers, desorbs work simultaneously, and the desorption experiment data obtained more accurately may be used
Letter, can succinctly, easily determine air content, the survey of air content more accurate than the data that conventional air content desorption method is obtained
Method for testing operability is stronger.
The above, only specific embodiment of the utility model, it is impossible to which the scope that utility model is implemented, institute are limited with it
With the displacement of its equivalent assemblies, or the equivalent variations made according to the utility model protection domain and modification, it should all still fall within this reality
With the new category covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical scheme
Between, can be used with independent assortment between technical scheme and technical scheme.
Claims (7)
1. a kind of shale air content test device, it is characterised in that including be sequentially connected by pipeline (6) methane gas cylinder (1),
Gas boosting pump (2) and six-way valve (3), two other interface of six-way valve (3) is respectively through valve A, valve D connection high pressure parsing
The K51 mouths of tank (5) and the K71 mouths of high-pressure water tank (7), the K54 mouths of high pressure parsing tank (5) and the K72 mouths of high-pressure water tank (7) pass through
Pipeline (6) is connected, and is provided with valve C on the pipeline of connection, and the 4th mouthful of six-way valve (3) is provided with pressure gauge (4), high pressure
The K53 mouths of parsing tank (5) are provided with valve B, and the K52 ports of export of high pressure parsing tank (5) connect through pipeline and stretch into high pressure water storage
Valve E, the top exit connection water collector (9) of high pressure water tank (8) are provided with the bottom of tank (8), and the pipeline of connection
Entrance, water collector (9) is arranged on electronic balance (10), the signal output point connection computer of electronic balance (10)
(12)。
2. a kind of shale air content test device according to claim 1, it is characterised in that described methane gas cylinder (1)
Interior gas pressure is 15MPa.
3. a kind of shale air content test device according to claim 1, it is characterised in that described high pressure parsing tank
(5) the rated insulation voltage limit is 60MPa.
4. a kind of shale air content test device according to claim 1, it is characterised in that described high-pressure water tank (7)
The rated insulation voltage limit be 60MPa.
5. a kind of shale air content test device according to claim 1, it is characterised in that described high pressure water tank
(8) the rated insulation voltage limit is 5MPa.
6. a kind of shale air content test device according to claim 1, it is characterised in that described electronic balance (10)
Precision 0.1g, voltage 24V, power 12W.
7. a kind of shale air content test device according to claim 1, it is characterised in that described computer (12) tool
There is automatic data collection and preserve data, the function of being gathered according to the time series of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621446488.1U CN206321530U (en) | 2016-12-27 | 2016-12-27 | A kind of shale air content test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621446488.1U CN206321530U (en) | 2016-12-27 | 2016-12-27 | A kind of shale air content test device |
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| Publication Number | Publication Date |
|---|---|
| CN206321530U true CN206321530U (en) | 2017-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621446488.1U Expired - Fee Related CN206321530U (en) | 2016-12-27 | 2016-12-27 | A kind of shale air content test device |
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| CN (1) | CN206321530U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449694A (en) * | 2017-07-19 | 2017-12-08 | 上海化工研究院有限公司 | Weighing type minimum gas volume measuring device and the method for testing based on the device |
| CN107727530A (en) * | 2017-10-19 | 2018-02-23 | 中国地质大学（北京） | Based on the whole airtight instrument for measuring gas content of integration of temperature and pressure backtracking principle and application |
| CN111175471A (en) * | 2018-11-12 | 2020-05-19 | 中石化石油工程技术服务有限公司 | Rock debris logging method |
| CN117147414A (en) * | 2023-11-01 | 2023-12-01 | 中国矿业大学 | Device and method for determining occurrence of water in shale organic and inorganic pores |
-
2016
- 2016-12-27 CN CN201621446488.1U patent/CN206321530U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449694A (en) * | 2017-07-19 | 2017-12-08 | 上海化工研究院有限公司 | Weighing type minimum gas volume measuring device and the method for testing based on the device |
| CN107727530A (en) * | 2017-10-19 | 2018-02-23 | 中国地质大学（北京） | Based on the whole airtight instrument for measuring gas content of integration of temperature and pressure backtracking principle and application |
| CN111175471A (en) * | 2018-11-12 | 2020-05-19 | 中石化石油工程技术服务有限公司 | Rock debris logging method |
| CN111175471B (en) * | 2018-11-12 | 2022-06-24 | 中石化石油工程技术服务有限公司 | Rock debris logging method |
| CN117147414A (en) * | 2023-11-01 | 2023-12-01 | 中国矿业大学 | Device and method for determining occurrence of water in shale organic and inorganic pores |
| CN117147414B (en) * | 2023-11-01 | 2023-12-29 | 中国矿业大学 | Device and method for determining occurrence of water in shale organic and inorganic pores |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180209 Address after: 401123 B 24 building, Pisces, No. 55, middle section of Mount Huangshan Avenue, Yubei District, Chongqing Co-patentee after: Huaneng Group Technology Innovation Center Co., Ltd. Patentee after: Chongqing Mineral Resources Development Co Ltd Address before: 401123 B 24 building, Pisces, No. 55, middle section of Mount Huangshan Avenue, Yubei District, Chongqing Patentee before: Chongqing Mineral Resources Development Co Ltd |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20181227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |