CN108627437A - Gas micro measurement device and method under experiment reservoir conditions - Google Patents
Gas micro measurement device and method under experiment reservoir conditions Download PDFInfo
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- CN108627437A CN108627437A CN201710174277.XA CN201710174277A CN108627437A CN 108627437 A CN108627437 A CN 108627437A CN 201710174277 A CN201710174277 A CN 201710174277A CN 108627437 A CN108627437 A CN 108627437A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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Abstract
The invention discloses gas micro measurement device and method under a kind of experiment reservoir conditions, which includes：Sapphire pipe；Entrance end connector, is connected to one end of sapphire pipe, and entrance end connector includes arrival end air inlet and arrival end inlet；End connector is exported, is connected to the other end of sapphire pipe, outlet end connector includes outlet end air inlet；First injection pump, the first injection pump are set to arrival end；Liquid intermediate receptacle, liquid intermediate receptacle are set between the first injection pump and arrival end inlet；Second injection pump, the second injection pump are set to outlet end；Gas pressure vessel, gas pressure vessel are set between the second injection pump and outlet end air inlet.The advantages of present apparatus, is：Operating method is simple, convenient, and the test result with degree of precision.
Description
Technical field
The present invention relates to oil-gas field development experimental technique fields, more particularly, to gas under a kind of experiment reservoir conditions
Body miniflow amount determining device and method.
Background technology
The permeability of rock core is an important parameter of evaluating reservoir, and compact rock core or shale core permeability are very
Low, flowing velocity of the gas in rock core can be very slow, and the flow of gas is difficult to Accurate Determining, this can be to the physical parameter of rock core
Calibration tape carrys out prodigious difficulty.And current core permeability test is the condition in the case where room temperature, outlet are atmospheric pressure mostly
It carries out, this cannot be characterized under reservoir conditions, and gas is in the seepage characteristic of rock core, and therefore, it is necessary to gases under Accurate Determining reservoir conditions
Flow velocity in compact rock core.
To test indoors mostly be to measure gas flow under reservoir conditions using round-about way, at present laboratory experiment
Method is as follows：Soap-foam flowmeter method, the gas under reservoir conditions are passed through by measuring soap foam under atmospheric pressure after back-pressure valve
The time of flowtube calculates the flow of gas, is that human error is big using this flow determining method one, second is that gas is logical
When crossing back-pressure valve, flowing, which is difficult to keep to stablize, to be continued, and error is big；Throttle capillary tube method, this method are equally reservoir conditions
Gas is converted under atmospheric pressure and measures, and cannot measure the flow of compressed gas；Minimum gas flow rate-measuring device, using floating
Minor gas flowmeter is not suitable for the flow measurement of compressed gas；Gas flowmeter, using the sensor group in gas pipeline
Part measures gas flow, higher to sensor module required precision when flow is smaller, when gas pressure is higher, passes
Sensor component, which differs, surely normally to be detected；Minimum gas flow measurement method based on static expanding method vacuum standard, will calibrate
Indoor gas is introduced by aperture in vacuum system, is obtained according to the pressure in the conductance of aperture and gas decline of pressure system
To gas flow, this method is not suitable for the measurement of laboratory experiment higher pressures of gases flow；For compressed gas flow
It measuring, it is proposed that a kind of device for measuring air volume flow measures the pressure difference of gas pressure and initial pressure by microprocessor,
It is evacuated with corresponding speed to generate corresponding control signal driving syringe pump, gas flow is measured, when flow is very small
When microprocessor detection pressure difference signal it is smaller, this is just very high to syringe pump required precision；High-pressure gas flow meter amount mark
Standard apparatus, using weight method, to minimum gas flow measurement, whithin a period of time, gaseous mass variation is very small, it is difficult to measure
It is front and back of poor quality；Ultrasonic gas flow determining method is to measure ultrasonic pulse signal after emission sensor transmitting to connecing
Transition time between by sensor, but may for the time difference in tiny flow quantity, especially ultrasonic wave propagation time in gas
It is difficult to differentiate between, is not easy to detect the tiny flow quantity of gas.
Therefore, it is necessary to gas micro measurement device and method under a kind of experiment reservoir conditions are developed, it can be direct
Measure the flowing velocity of elevated pressures minimum gas.
The information for being disclosed in background of invention part is merely intended to deepen the reason of the general background technology to the present invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Invention content
The present invention proposes gas micro measurement device and method under a kind of experiment reservoir conditions, can directly survey
Determine the flowing velocity of elevated pressures minimum gas.
Gas micro measurement device under a kind of experiment reservoir conditions of an aspect of of the present present invention proposition, including：
Sapphire pipe；
Entrance end connector, is connected to one end of the sapphire pipe, the entrance end connector include arrival end air inlet and
Arrival end inlet；
End connector is exported, is connected to the other end of the sapphire pipe, the outlet end connector includes outlet end air inlet；
First injection pump, first injection pump are set to arrival end；
Liquid intermediate receptacle, the liquid intermediate receptacle be set to first injection pump and the arrival end inlet it
Between；
Second injection pump, second injection pump are set to outlet end；
Gas pressure vessel, the gas pressure vessel be set to second injection pump and the outlet end air inlet it
Between.
Preferably, further include：
First two-way valve, first two-way valve are set at the arrival end air inlet；
Second two-way valve, second two-way valve be set to the liquid intermediate receptacle and the arrival end inlet it
Between；
Third two-way valve, the third two-way valve be set to the gas pressure vessel and the outlet end air inlet it
Between.
Preferably, the sapphire pipe inner wall is equipped with the scale of fluid volume.
Preferably, first two-way valve, second two-way valve and the third two-way valve are two-way electronic valves.
Gas micro assay method under a kind of experiment reservoir conditions of another aspect of the present invention proposition, including following step
Suddenly：
Step 1, the gassy in gas pressure vessel is controlled by the second injection pump in the gas pressure vessel
Gas pressure；
Step 2, third two-way valve is opened, gassy in sapphire pipe is made；
Step 3, the liquid intermediate receptacle equipped with liquid is given to boost by the first injection pump, when pressure and the sapphire pipe
When interior gas pressure is identical, the second two-way valve is opened, the liquid is pumped into the sapphire pipe, closes described second liang
Port valve；
Step 4, the first two-way valve is opened, gas to be measured enters in the sapphire pipe, and water column is formed with the liquid
Interface, and the water column interface is pushed to migrate in the sapphire pipe；
Step 5, distance, migration time and the gas pressure migrated in the sapphire pipe according to the water column,
Calculate gas flow.
Preferably, the gas in the gas pressure vessel is inert gas.
Preferably, the liquid of the liquid intermediate receptacle is the liquid that can not dissolve the inert gas.
Optionally, gas pressure depends on the pressure-resistant degree of sapphire pipe, such as gas pressure can be 2-10Mpa,
It can be with bigger pressure, as long as sapphire pipe can be born.
Optionally, the liquid volume being pumped into the sapphire pipe can be 0.05-2ml, it is preferable that liquid volume is about
0.1-1ml。
Optionally, migration time is determined according to flow velocity, can be in the range of several seconds to hundreds of seconds.According to the present invention one
Gas micro measurement device and method under kind experiment reservoir conditions, the advantage is that：It can utilize in pressure-resistant sapphire pipe
The migration of gas-liquid interface directly measures the flow velocity of gas under a certain pressure, and this assay method is simple, convenient, and with higher
The test result of precision.
Apparatus and method of the present invention has other characteristics and advantages, these characteristics and advantages attached from what is be incorporated herein
It will be apparent in figure and subsequent specific embodiment, or will be in the attached drawing and subsequent specific implementation being incorporated herein
It is stated in detail in example, these the drawings and specific embodiments are used together to explain the specific principle of the present invention.
Description of the drawings
Exemplary embodiment of the present is described in more detail in conjunction with the accompanying drawings, of the invention is above-mentioned and other
Purpose, feature and advantage will be apparent, wherein in exemplary embodiments of the present invention, identical reference label is usual
Represent same parts.
Fig. 1 shows the schematic diagram of gas micro measurement device under a kind of experiment reservoir conditions according to the present invention.
Fig. 2 shows the flow charts of gas micro assay method under a kind of experiment reservoir conditions according to the present invention.
Reference sign：
1, sapphire pipe；2, entrance end connector；3, the first two-way valve；4, the second two-way valve；
5, liquid intermediate receptacle；6, the first injection pump；7, the second injection pump；
8, gas pressure vessel；9, third two-way valve；10, end connector is exported.
Specific implementation mode
The present invention is more fully described below with reference to accompanying drawings.Although showing the preferred embodiment of the present invention in attached drawing,
However, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth here.On the contrary, providing
These embodiments are of the invention more thorough and complete in order to make, and can will fully convey the scope of the invention to ability
The technical staff in domain.
One aspect of the present invention, gas micro measurement device under a kind of experiment reservoir conditions of proposition, including：Sapphire
Pipe；Entrance end connector, is connected to one end of sapphire pipe, and entrance end connector includes arrival end air inlet and arrival end inlet；
End connector is exported, is connected to the other end of sapphire pipe, outlet end connector includes outlet end air inlet；First injection pump, first
Injection pump is set to arrival end；Liquid intermediate receptacle, liquid intermediate receptacle be set to the first injection pump and arrival end inlet it
Between；Second injection pump, the second injection pump are set to outlet end；Gas pressure vessel, gas pressure vessel are set to the second injection
Between pump and outlet end air inlet.
Preferably, further include：First two-way valve, the first two-way valve are set at arrival end air inlet；Second liang
Port valve, the second two-way valve are set between liquid intermediate receptacle and arrival end inlet；Third two-way valve, the setting of third two-way valve
Between gas pressure vessel and outlet end air inlet.
Wherein, the two-way valve that uses is electromagnetism two-way valve or two-way electronic valve in the present invention, further preferably electronic two
Port valve.
Sapphire pipe is transparent pipe, and internal diameter selects the transparent sapphire pipe of different inner diameters according to the size of empirical flow,
Sapphire pipe inner wall is carved with the scale for measuring volume, convenient for experimenter's metering by the volume of fluid, gas pressure vessel energy
The pressure of outlet end is enough controlled, and keeps the stabilization of pressure by the second connected injection pump.
Another aspect of the present invention, gas micro assay method under a kind of experiment reservoir conditions of proposition, including with
Lower step：
Step 1, the gassy in gas pressure vessel controls the gas in gas pressure vessel by the second injection pump
Pressure；
Step 2, third two-way valve is opened, gassy in sapphire pipe is made；
Step 3, the liquid intermediate receptacle equipped with liquid is given to boost by the first injection pump, when in pressure and sapphire pipe
When gas pressure is identical, the second two-way valve is opened, liquid is pumped into sapphire pipe, closes the second two-way valve；
Step 4, the first two-way valve is opened, gas to be measured enters in sapphire pipe, forms water column interface with liquid, and push away
It migrates in sapphire pipe at dynamic water column interface；
Step 5, distance, migration time and the gas pressure migrated in sapphire pipe according to water column calculate gas flow.
Preferably, the gas in gas pressure vessel is inert gas.
Preferably, the liquid of liquid intermediate receptacle is the liquid that can not dissolve inert gas.
A kind of experiment through the invention is measured gas flow with gas micro measurement device under reservoir conditions,
The flowing velocity of minimum gas under elevated pressures can be directly measured, also, measurement device is easy to operation, assay method is simple,
Convenient, test result precision is higher.
Embodiment
Fig. 1 shows the schematic diagram of gas micro measurement device under a kind of experiment reservoir conditions according to the present invention.
Fig. 2 shows the flow charts of gas micro assay method under a kind of experiment reservoir conditions according to the present invention.
Gas micro measurement device under a kind of experiment reservoir conditions of the present invention, including：
Sapphire pipe 1；
Entrance end connector 2, is connected to one end of sapphire pipe 1, and entrance end connector 2 includes arrival end air inlet and arrival end
Inlet；
End connector 10 is exported, the other end of sapphire pipe 1 is connected to, outlet end connector 10 includes outlet end air inlet；
First injection pump 6, the first injection pump 6 are set to arrival end；
Liquid intermediate receptacle 5, liquid intermediate receptacle 5 are set between the first injection pump 6 and arrival end inlet；
Second injection pump 7, the second injection pump 7 are set to outlet end；
Gas pressure vessel 8, gas pressure vessel 8 are set between the second injection pump 7 and outlet end air inlet.
The device further includes：
First two-way valve 3, the first two-way valve 3 are set at arrival end air inlet；
Second two-way valve 4, the second two-way valve 4 are set between liquid intermediate receptacle 5 and arrival end inlet；
Third two-way valve 9, third two-way valve 9 are set between gas pressure vessel 8 and outlet end air inlet.
Wherein, 1 inner wall of sapphire pipe is carved with volume markings, and the two-way valve that the present embodiment uses is two-way electronic valve.
Gas flow measurement is carried out according to above-mentioned apparatus：
Before measurement, the nitrogen full of pressure 5MPa needed for experiment in gas pressure vessel leads in entire measurement process
Crossing the second injection pump makes nitrogen pressure in gas pressure vessel stablize in 5MPa, then opens third two-way valve, makes sapphire pipe
Be connected with gas pressure vessel, the nitrogen of 5MPa pressure be full of in sapphire pipe, in a liquid between in container full of not dissolving in
The liquid of gas makes fluid pressure be raised to 5MPa by the first injection pump.
When measurement, the second two-way valve is opened, 0.1ml is injected into device portal end connector by the first injection pump and is not dissolved in
The liquid of gas is then shut off the second two-way valve；The first two-way valve is opened, gas to be measured enters dress by arrival end air inlet
In setting, gas-liquid interface is formed with liquid, with continuing into for arrival end air inlet gas to be measured, pushes gas-liquid interface in indigo plant
Migrate in jewel pipe, observe and record migration quantity of the gas-liquid interface in sapphire pipe, when migrate 1ml scales when, record the time
For 100s, it follows that the flow velocity of gas to be measured is 0.01ml/s at 5MPa.
The embodiment of the present invention is described above, above description is exemplary, and non-exclusive, and also not
It is limited to disclosed embodiment.Without departing from the scope and spirit of embodiment described, for the art
Those of ordinary skill for many modifications and changes will be apparent from.The selection of term used herein, it is intended to best
Principle, practical application or the improvement to the technology in market of embodiment are explained in ground, or make the other common of the art
Technical staff can understand embodiments disclosed herein.
Claims (8)
1. gas micro measurement device under a kind of experiment reservoir conditions, wherein including：
Sapphire pipe；
Entrance end connector, is connected to one end of the sapphire pipe, and the entrance end connector includes arrival end air inlet and entrance
Hold inlet；
End connector is exported, is connected to the other end of the sapphire pipe, the outlet end connector includes outlet end air inlet；
First injection pump, first injection pump are set to arrival end；
Liquid intermediate receptacle, the liquid intermediate receptacle are set between first injection pump and the arrival end inlet；
Second injection pump, second injection pump are set to outlet end；
Gas pressure vessel, the gas pressure vessel are set between second injection pump and the outlet end air inlet.
2. gas micro measurement device under experiment reservoir conditions according to claim 1, wherein further include：
First two-way valve, first two-way valve are set at the arrival end air inlet；
Second two-way valve, second two-way valve are set between the liquid intermediate receptacle and the arrival end inlet；
Third two-way valve, the third two-way valve are set between the gas pressure vessel and the outlet end air inlet.
3. gas micro measurement device under experiment reservoir conditions according to claim 1, wherein the sapphire pipe
Inner wall is equipped with the scale of fluid volume.
4. gas micro measurement device under experiment reservoir conditions according to claim 2, wherein described first liang logical
Valve, second two-way valve and the third two-way valve are two-way electronic valves.
5. gas micro assay method under a kind of experiment reservoir conditions utilizes the experiment reservoir described in claim 1-4
Under the conditions of gas micro measurement device, wherein the described method comprises the following steps：
Step 1, the gassy in gas pressure vessel controls the gas in the gas pressure vessel by the second injection pump
Pressure；
Step 2, third two-way valve is opened, gassy in sapphire pipe is made；
Step 3, the liquid intermediate receptacle equipped with liquid is given to boost by the first injection pump, when in pressure and the sapphire pipe
When gas pressure is identical, the second two-way valve is opened, the liquid is pumped into the sapphire pipe, closed described second liang and lead to
Valve；
Step 4, the first two-way valve is opened, gas to be measured enters in the sapphire pipe, and water column interface is formed with the liquid,
And the water column interface is pushed to migrate in the sapphire pipe；
Step 5, distance, migration time and the gas pressure migrated in the sapphire pipe according to the water column calculate
Gas flow.
6. gas micro assay method under experiment reservoir conditions according to claim 5, wherein the gas pressure
Gas in container is inert gas.
7. gas micro assay method under experiment reservoir conditions according to claim 6, wherein among the liquid
The liquid of container is the liquid that can not dissolve the inert gas.
8. gas micro assay method under experiment reservoir condition according to claim 5, wherein be pumped into described blue precious
Liquid volume in madreporic canal is 0.05-2ml.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174277.XA CN108627437B (en) | 2017-03-22 | 2017-03-22 | Gas micro-flow measuring device and method under reservoir conditions for experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174277.XA CN108627437B (en) | 2017-03-22 | 2017-03-22 | Gas micro-flow measuring device and method under reservoir conditions for experiment |
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| Publication Number | Publication Date |
|---|---|
| CN108627437A true CN108627437A (en) | 2018-10-09 |
| CN108627437B CN108627437B (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710174277.XA Active CN108627437B (en) | 2017-03-22 | 2017-03-22 | Gas micro-flow measuring device and method under reservoir conditions for experiment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504406A (en) * | 2020-05-15 | 2020-08-07 | 大连理工大学 | A flow detection chip and detection method for ultra-micro flow liquid |
| CN115077643A (en) * | 2022-07-26 | 2022-09-20 | 中国测试技术研究院流量研究所 | Flow detection device and detection method of micro-flow liquid |
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| CN105910951A (en) * | 2016-04-06 | 2016-08-31 | 西南石油大学 | Measuring apparatus and measuring method for gas solubility in fluid in shaft of oil and gas well |
| CN205920034U (en) * | 2016-07-20 | 2017-02-01 | 西南石油大学 | Measure gas logging device of higher permeability rock core |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105910951A (en) * | 2016-04-06 | 2016-08-31 | 西南石油大学 | Measuring apparatus and measuring method for gas solubility in fluid in shaft of oil and gas well |
| CN205920034U (en) * | 2016-07-20 | 2017-02-01 | 西南石油大学 | Measure gas logging device of higher permeability rock core |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504406A (en) * | 2020-05-15 | 2020-08-07 | 大连理工大学 | A flow detection chip and detection method for ultra-micro flow liquid |
| CN111504406B (en) * | 2020-05-15 | 2022-03-29 | 大连理工大学 | Flow detection chip and detection method for ultramicro small-flow liquid |
| CN115077643A (en) * | 2022-07-26 | 2022-09-20 | 中国测试技术研究院流量研究所 | Flow detection device and detection method of micro-flow liquid |
| CN115077643B (en) * | 2022-07-26 | 2022-11-04 | 中国测试技术研究院流量研究所 | Flow detection device and detection method of micro-flow liquid |
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| CN108627437B (en) | 2021-04-23 |
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