CN107192632A - A kind of device and method for measuring shale gas reservoir air content - Google Patents
A kind of device and method for measuring shale gas reservoir air content Download PDFInfo
- Publication number
- CN107192632A CN107192632A CN201710297987.1A CN201710297987A CN107192632A CN 107192632 A CN107192632 A CN 107192632A CN 201710297987 A CN201710297987 A CN 201710297987A CN 107192632 A CN107192632 A CN 107192632A
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- gas
- pressure
- rock sample
- desorption chamber
- air content
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Links
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000011435 rock Substances 0.000 claims abstract description 44
- 238000003795 desorption Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 65
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 7
- 239000003345 natural gas Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 239000000284 extract Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000011161 development Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 108700002783 roundabout Proteins 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/14—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference
Abstract
The present invention provides a kind of device and method for measuring shale gas reservoir air content, including detection source of the gas, rock sample desorption chamber, gas-metering device and central calculating control system, the outlet side of detection source of the gas is communicated to the inlet end of rock sample desorption chamber by air inlet pipeline, the outlet side of rock sample desorption chamber is communicated to gas-metering device by outlet pipe, pressure sensor is provided with air inlet pipeline and outlet pipe, gas-metering device and pressure sensor are connected with central calculating control system, and rock sample desorption chamber is also correspondingly arranged on thermostat, vavuum pump and confining pressure device.It is intended to improve the problems such as numerical value in existing measurement process is bigger than normal, error is big, measurement is inaccurate.The invention belongs to rock sample research field.
Description
Technical field
The present invention provides a kind of device and method for measuring shale gas reservoir air content, belongs to shale gas development technique field.
Background technology
Along with the demand of social development, the demand more and more higher of unconventional energy resource, the scale of exploitation is increasing, in order to
The exploitation demand of all kinds of unconventional energy resource is met, large-scale exploitation has also been carried out to shale reservoir, in this case, measurement
Shale gas reservoir air content is just particularly important, and current shale measurement of air content can be divided into two classes：Direct method and indirectly
Method, direct method measures shale air content by the method for desorption, and round-about way is to measure shale by the method for isothermal adsorption
Air content.
Desorption method is measurement shale air content most straightforward approach, is determined using live drill cores and representative landwaste
Actual air content, measurement shale air content includes loss tolerance, gas desorption quantity and residual volume.Adsorption isotherm experiment method refers to lead to
Cross the methods such as adsorption isotherm experiment, well log interpretation and speculate adsorbed gas content and free Gas content.Although passing through both the above method
Measure shale gas air content that can be rough, but will result in that numerical value is bigger than normal, error during shale air content is measured
Greatly, the problems such as measuring inaccurate.
The content of the invention
It is an object of the invention to：There is provided a kind of device and method for measuring shale gas reservoir air content, it is intended to improve existing
The problems such as numerical value is bigger than normal in measurement process, error is big, measurement is inaccurate.
To solve the above problems, intend the device using such a measurement shale gas reservoir air content, including detection source of the gas, rock
Sample desorption chamber, gas-metering device and central calculating control system, the outlet side of detection source of the gas is communicated to rock by air inlet pipeline
The inlet end of sample desorption chamber, the outlet side of rock sample desorption chamber is communicated to gas-metering device by outlet pipe, air inlet pipeline and
Be provided with pressure sensor on outlet pipe, gas-metering device and pressure sensor with central calculating control system phase
Even, rock sample desorption chamber is also correspondingly arranged on thermostat, vavuum pump and confining pressure device.
To simulate actual rock temperature, the thermostat is insulating box, and rock sample desorption chamber is arranged in thermostat, is used
In control rock sample simulated formation temperature, the temperature range of the thermostat is room temperature to 100 DEG C, 0.1 DEG C of accuracy of temperature control；
In aforementioned means, the gas-metering device be gas volume determine device, such as gas volume analyzer or with arrange
Water gas collection method surveys the device of gas volume, is exactly existing gas volume in container by the volume of draining；
In aforementioned means, the detection gas in detection source of the gas is natural gas；
In aforementioned means, the pressure limit of pressure sensor monitoring is 0 to 100MPa, and measuring accuracy is 0.1MPa；
In aforementioned means, the confining pressure device is hydraulic pump, and rock sample to be measured is arranged at the setting-out area in rock sample desorption chamber, enclosed
Pressure device is communicated to the confined pressure area of setting-out area periphery in rock sample desorption chamber, for be pressurizeed on the outside of rock sample to be measured, pressurization scope to be 0
To 100MPa, control accuracy is 0.01MPa；
Its application method is as follows：Natural core is obtained from shale reservoir, rock core is loaded to rock according to the geologic feature of reservoir
The setting-out area of heart desorption chamber, confined pressure is applied by hydraulic pump, simulates reservoir burden pressure, and vavuum pump detects gas to system pump down
Source is pressurized to strata pressure to rock core pore filling high-pressure natural gas, at a certain temperature, such as is protected under 25 DEG C or formation temperature
24 hours pressure stabilitys are held, with a certain amount of gas of vacuum pumped, system pressure is reduced by 2 to 10MPa, is then shut off vacuum
Pump, gas production is measured with gas-metering device；Meanwhile, the change of pressure sensor monitoring system pressure at least stablizes 3 to 10 small
When, the corresponding pressure value of record output gas, then carry out and test next time, until without gas production, test terminates.Pass through gas dosing
Device and pressure sensor are monitored automatically, gathered data, are fed back to center control computing system and are carried out data processing, calculate confession
The difference of tolerance and gas output, so as to calculate shale air content.
Compared with prior art, invention emulates the development scheme in shale gas development process, shale gas development process
Middle gas production, pressure and other parameters changing rule, realize the production determined by physical simulating method during shale gas exploitation
Tolerance, to determine that the free tolerance of different existence state provides data supporting with absorption tolerance.Also have automaticity it is high,
The characteristics of data are monitored, gathered, handling automatically, error is small, with very high promotional value.
Brief description of the drawings
Fig. 1 is the structure principle chart of the present invention.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Embodiment：
Reference picture 1, a kind of device for measurement shale gas reservoir air content that the present embodiment is provided, including detection source of the gas 1, rock sample
Detection gas in desorption chamber 2, gas-metering device 3 and central calculating control system 4, detection source of the gas 1 is natural gas, detects gas
The outlet side in source 1 is communicated to the inlet end of rock sample desorption chamber 2 by air inlet pipeline 5, and the outlet side of rock sample desorption chamber 2 passes through outlet
Pipeline 6 is communicated to gas-metering device 3, and gas-metering device 3 is that gas volume determines device, such as gas volume analyzer or use
Draining water gathering of gas law surveys the device of gas volume, is exactly existing gas volume in container, air inlet pipeline 5 and outlet by the volume of draining
Pressure sensor 7 is provided with pipeline 6, the pressure limit that pressure sensor 7 is monitored is 0 to 100MPa, and measuring accuracy is
0.1MPa, gas-metering device 3 and pressure sensor 7 are connected with central calculating control system 4.
Rock sample desorption chamber 2 is also correspondingly arranged on thermostat 8, vavuum pump 9 and confining pressure device 10, and thermostat 8 is constant temperature
Case, rock sample desorption chamber 2 is arranged in thermostat 8, for controlling rock sample simulated formation temperature, the temperature model of the thermostat
Enclose is room temperature to 100 DEG C, 0.1 DEG C of accuracy of temperature control；Confining pressure device 10 is hydraulic pump, and rock sample to be measured is arranged in rock sample desorption chamber 2
Setting-out area 21, confining pressure device 10 is communicated to the confined pressure area 22 of the periphery of setting-out area in rock sample desorption chamber 2 21, for for rock sample to be measured
Outside is pressurizeed, and pressurization scope is 0 to 100MPa, and control accuracy is 0.01MPa.
Its operation principle is as follows：
Natural core is obtained from shale reservoir, rock core is loaded to the setting-out of rock core desorption chamber 2 according to the geologic feature of reservoir
Area 21, confined pressure is applied by hydraulic pump, simulates reservoir burden pressure, and vavuum pump 9 detects source of the gas 1 to rock core hole system pump down
Gap fills high-pressure natural gas, is pressurized to strata pressure, at a certain temperature, such as keeps pressing for 24 hours under 25 DEG C or formation temperature
Power is stable, and a certain amount of gas is extracted out with vavuum pump 9, system pressure is reduced by 2 to 10MPa, is then shut off vavuum pump 9, uses gas
Metering device 3 measures gas production；Meanwhile, the monitoring system pressure change of pressure sensor 7 is at least stablized 3 to 10 hours, record production
The corresponding pressure value of outlet, then carry out and test next time, until without gas production, test terminates.Pass through gas-metering device 3 and pressure
Force snesor 7 automatically monitoring, gathered data, feed back to center control computing system 4 carry out data processing, calculate air demand with
The difference of gas output, so as to calculate shale air content.
Claims (7)
1. a kind of device for measuring shale gas reservoir air content, it is characterised in that：Including detection source of the gas (1), rock sample desorption chamber (2),
Gas-metering device (3) and central calculating control system (4), the outlet side of detection source of the gas (1) is communicated to by air inlet pipeline (5)
The inlet end of rock sample desorption chamber (2), the outlet side of rock sample desorption chamber (2) is communicated to gas-metering device by outlet pipe (6)
(3) pressure sensor (7), gas-metering device (3) and pressure sensing, are provided with air inlet pipeline (5) and outlet pipe (6)
Device (7) is connected with central calculating control system (4), and rock sample desorption chamber (2) is also correspondingly arranged on thermostat (8), vavuum pump
And confining pressure device (10) (9).
2. according to claim 1 it is a kind of measure shale gas reservoir air content device, it is characterised in that：The thermostat
(8) be insulating box, rock sample desorption chamber (2) is arranged in thermostat (8), the temperature range of the thermostat be room temperature extremely
100 DEG C, 0.1 DEG C of accuracy of temperature control.
3. according to claim 1 it is a kind of measure shale gas reservoir air content device, it is characterised in that：The gas dosing dress
Put (3) and determine device for gas volume.
4. according to claim 1 it is a kind of measure shale gas reservoir air content device, it is characterised in that：Detect in source of the gas (1)
Detection gas be natural gas.
5. according to claim 1 it is a kind of measure shale gas reservoir air content device, it is characterised in that：Pressure sensor (7)
The pressure limit of monitoring is 0 to 100MPa, and measuring accuracy is 0.1MPa.
6. according to claim 1 it is a kind of measure shale gas reservoir air content device, it is characterised in that：The confining pressure device
(10) it is hydraulic pump, rock sample to be measured is arranged at the setting-out area (21) in rock sample desorption chamber (2), and confining pressure device (10) is communicated to rock sample
The confined pressure area (22) of desorption chamber (2) interior setting-out area (21) periphery, for be pressurizeed on the outside of rock sample to be measured, pressurization scope be 0 to
100MPa, control accuracy is 0.01MPa.
7. the method for measuring shale gas reservoir air content using any claim described device in claim 1-6, its feature exists
In specific method is as follows：
Natural core is obtained from shale reservoir, rock core is loaded to the setting-out area of rock core desorption chamber (2) according to the geologic feature of reservoir
(21) confined pressure, is applied by hydraulic pump, reservoir burden pressure is simulated, vavuum pump (9) detects source of the gas (1) to rock system pump down
Heart pore filling high-pressure natural gas, is pressurized to strata pressure, at a certain temperature, extracts a certain amount of gas out with vavuum pump (9), makes
System pressure reduction by 2 is then shut off vavuum pump (9) to 10MPa, and gas production is measured with gas-metering device (3)；Meanwhile, pressure
Sensor (7) monitoring system pressure change, at least stablizes 3 to 10 hours, the corresponding pressure value of record output gas, then carries out next
Secondary test, until without gas production, test terminates, passes through gas-metering device (3) and pressure sensor (7) monitoring, collection automatically
Data, feed back to center control computing system (4) and carry out data processing, the difference of air demand and gas output is calculated, so as to count
Calculate shale air content.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297987.1A CN107192632A (en) | 2017-04-29 | 2017-04-29 | A kind of device and method for measuring shale gas reservoir air content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710297987.1A CN107192632A (en) | 2017-04-29 | 2017-04-29 | A kind of device and method for measuring shale gas reservoir air content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107192632A true CN107192632A (en) | 2017-09-22 |
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| CN201710297987.1A Pending CN107192632A (en) | 2017-04-29 | 2017-04-29 | A kind of device and method for measuring shale gas reservoir air content |
Country Status (1)
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| CN (1) | CN107192632A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607437A (en) * | 2017-10-27 | 2018-01-19 | 武汉大学 | A kind of high-precision automatic shale air content tester and method of testing |
| CN108469396A (en) * | 2018-02-07 | 2018-08-31 | 中国石油天然气股份有限公司 | Air content physical simulating device and analogy method for coal petrography and shale |
| CN108627414A (en) * | 2018-02-07 | 2018-10-09 | 中国石油天然气股份有限公司 | The analogy method and simulator of the air content of coal petrography or shale |
| CN108761033A (en) * | 2018-05-03 | 2018-11-06 | 中国石油天然气股份有限公司 | The determination method, apparatus and storage medium of the lost gas total content of shale |
| CN108872529A (en) * | 2018-04-12 | 2018-11-23 | 中国石油大学(北京) | For measuring shale rupture methane lost imitative experimental appliance and its method |
| CN110608975A (en) * | 2019-09-23 | 2019-12-24 | 中国地质大学（武汉） | Gas content testing device and testing method and application thereof |
| CN111948092A (en) * | 2020-07-08 | 2020-11-17 | 长江大学 | Shale reservoir gas content testing device and method |
| CN112378812A (en) * | 2020-11-06 | 2021-02-19 | 西南石油大学 | Experimental device and method for determining desorption rate of adsorption type shale gas |
| CN113670769A (en) * | 2021-08-18 | 2021-11-19 | 中国石油大学(北京) | Method for simulating gas content change in marine shale stratum lifting process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713802A (en) * | 2015-04-01 | 2015-06-17 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | Method and device for testing gas content of shale gas reservoir |
-
2017
- 2017-04-29 CN CN201710297987.1A patent/CN107192632A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713802A (en) * | 2015-04-01 | 2015-06-17 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | Method and device for testing gas content of shale gas reservoir |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607437B (en) * | 2017-10-27 | 2019-09-17 | 武汉大学 | A kind of high-precision automatic shale air content test equipment and test method |
| CN107607437A (en) * | 2017-10-27 | 2018-01-19 | 武汉大学 | A kind of high-precision automatic shale air content tester and method of testing |
| CN108469396A (en) * | 2018-02-07 | 2018-08-31 | 中国石油天然气股份有限公司 | Air content physical simulating device and analogy method for coal petrography and shale |
| CN108627414A (en) * | 2018-02-07 | 2018-10-09 | 中国石油天然气股份有限公司 | The analogy method and simulator of the air content of coal petrography or shale |
| CN108872529A (en) * | 2018-04-12 | 2018-11-23 | 中国石油大学(北京) | For measuring shale rupture methane lost imitative experimental appliance and its method |
| CN108761033B (en) * | 2018-05-03 | 2023-10-31 | 中国石油天然气股份有限公司 | Method and device for determining total content of shale loss gas and storage medium |
| CN108761033A (en) * | 2018-05-03 | 2018-11-06 | 中国石油天然气股份有限公司 | The determination method, apparatus and storage medium of the lost gas total content of shale |
| CN110608975A (en) * | 2019-09-23 | 2019-12-24 | 中国地质大学（武汉） | Gas content testing device and testing method and application thereof |
| CN111948092A (en) * | 2020-07-08 | 2020-11-17 | 长江大学 | Shale reservoir gas content testing device and method |
| CN112378812A (en) * | 2020-11-06 | 2021-02-19 | 西南石油大学 | Experimental device and method for determining desorption rate of adsorption type shale gas |
| CN112378812B (en) * | 2020-11-06 | 2021-12-14 | 西南石油大学 | Experimental device and method for determining desorption rate of adsorption type shale gas |
| CN113670769A (en) * | 2021-08-18 | 2021-11-19 | 中国石油大学(北京) | Method for simulating gas content change in marine shale stratum lifting process |
| CN113670769B (en) * | 2021-08-18 | 2022-10-18 | 中国石油大学(北京) | Method for simulating gas content change in marine shale stratum lifting process |
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| PB01 | Publication | ||
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Application publication date: 20170922 |