CN207366386U - A kind of device that shale air content is accurately measured based on pressure differential method - Google Patents
A kind of device that shale air content is accurately measured based on pressure differential method Download PDFInfo
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- CN207366386U CN207366386U CN201721187057.2U CN201721187057U CN207366386U CN 207366386 U CN207366386 U CN 207366386U CN 201721187057 U CN201721187057 U CN 201721187057U CN 207366386 U CN207366386 U CN 207366386U
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- gas
- shale
- collecting apparatus
- gas collecting
- pressure
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Abstract
The utility model discloses a kind of device that shale air content is accurately measured based on pressure differential method, including a gas collecting apparatus, the lower end of gas collecting apparatus is equipped with a differential pressure pickup, differential pressure pickup includes up-sampling head and down-sampling head, up-sampling head is located at the upper end of gas collecting apparatus, down-sampling head is located at the lower end of gas collecting apparatus, the top side of gas collecting apparatus is provided with into water/gas port and exhaust outlet, the lower section side of gas collecting apparatus is provided with discharge outlet, exhaust outlet and discharge outlet are opened and closed by solenoid valve control, open exhaust outlet, close discharge outlet, it is filled to by the water inlet/gas port into gas collecting apparatus full of water；Close exhaust outlet, discharge outlet is opened, water inlet/gas port connects shale gas desorption apparatus, collects the collection of shale gas, the up-sampling head of differential pressure pickup measures the pressure of gas in gas collecting apparatus in real time, and the down-sampling head of differential pressure pickup measures the pressure of liquid in gas collecting apparatus in real time.The utility model can accurately understand the exact volume of the shale gas of different temperatures generation.
Description
Technical field
Shale reservoir field is the utility model is related to, more particularly to a kind of shale air content is accurately measured based on pressure differential method
Device.
Background technology
Shale gas is that one kind is present in shale, is born from the unconventional gas resource of storage certainly.Whether evaluation shale has
Reserves are industrialized, air content is a very important parameter.Effectively to evaluate whether somewhere has industrialized prospect,
Accurate air content evaluating data is must be set up, these air content data are used for evaluating reservoir, resource assessment and production forecast.Cause
This, it will be appreciated that a kind of shale air content, it is necessary to accurately test air content, there is provided method that will can accurately measure shale air content
And appliance arrangement.
At present, the measurement generally use desorption gas collection of shale gas air content, directly reads gas volume method, this method obtains
Gas volume error it is larger, confidence level is relatively low, endures query to the fullest extent.Therefore, the true air content for how accurately measuring shale is being surveyed
Visit in exploitation and just seem extremely important.
Utility model content
In view of this, the embodiment of the utility model provides a kind of body that can accurately measure different temperatures desorption gas collection
Product, carries out desorption collection air volume by being fitted loss in the device that shale air content is accurately measured based on pressure differential method of calibration.
The embodiment of the utility model provides a kind of device that shale air content is accurately measured based on pressure differential method, including a collection
Device of air, the lower end of the gas collecting apparatus are equipped with a differential pressure pickup, and the differential pressure pickup includes up-sampling head and down-sampling
Head, the up-sampling head are located at the upper end of gas collecting apparatus, and the down-sampling head is located at the lower end of gas collecting apparatus, the gas collecting apparatus
Top side be provided with into water/gas port and exhaust outlet, the lower section side of the gas collecting apparatus is provided with discharge outlet, the exhaust outlet and
Discharge outlet is opened and closed by solenoid valve control, opens exhaust outlet, closes discharge outlet, by the water inlet/gas port to gas collection
Water filling in device, the gas in the gas collecting apparatus are discharged from exhaust outlet, and water is gradually increased to fill in the gas collecting apparatus
Full water, closes exhaust outlet, opens discharge outlet, the water inlet/gas port connection shale gas desorption apparatus, the shale gas desorption apparatus
The shale gas of generation is collected in gas collecting apparatus by the water inlet/gas port, with the collection of shale gas, in the gas collecting apparatus
Water discharged from discharge outlet, the up-sampling head of the differential pressure pickup measures the pressure of gas in gas collecting apparatus, the pressure in real time
The down-sampling head of gap sensor measures the pressure of liquid in gas collecting apparatus in real time, and liquid level is obtained by the pressure difference of gas and liquid
Height, and then obtain in gas collecting apparatus collect shale gas volume.
Further, the range of the differential pressure pickup is 0-3Kpa, and using 4-20 milliamperes of current output signals, sample rate is
200HZ。
Further, the upper end of the gas collecting apparatus is additionally provided with a pressure sensor, and the pressure sensor measures page in real time
The system pressure of rock gas desorption apparatus and gas collecting apparatus connected space, for being fitted the shale gas of loss, and then corrects shale gas
Volume.
Further, the range of the pressure sensor is 0-120KPa, using 4-20 milliamperes of current output signals, sample rate
For 200HZ.
Further, temperature sensor is equipped with the shale gas desorption apparatus, the temperature sensor measures shale in real time
The temperature of gas desorption, that is, obtain different temperatures, desorb the volume of shale gas.
Further, the range of the temperature sensor is 0-120 DEG C, using 4-20 milliamperes of current output signals, sample rate
For 200HZ.
Further, water inlet/gas port, exhaust outlet and the discharge outlet are all connected with fast insert-pull connector, and by described quick
The instrument of the external measurement shale air content of connector is plugged, water inlet/gas port, exhaust outlet and the discharge outlet are provided with two points of threaded holes,
Water inlet/the gas port, exhaust outlet and discharge outlet connect fast insert-pull connector by two points of threaded holes.
Further, the fast insert-pull connector is right angle fast insert-pull connector, outside diameter 6mm, the fast insert-pull connector
Connected between two points of threaded holes by silicone tube, the solenoid valve is located on silicone tube, and the solenoid valve is normally closed solenoid valve.
Compared with prior art, the utility model has the advantages that：By the measuring principle of pressure differential method innovatively
Apply in the design of shale gassiness tester, using differential pressure pickup, by measuring the pressure of liquid level above and below gas collecting apparatus,
Pressure differential is calculated, the difference in height of gas collecting apparatus liquid level is converted into by pressure differential, so that the volume of desorption shale gas is calculated,
Desorption shale Gas content is obtained, improves the accuracy of measurement result；Design pressure sensor and temperature sensor, utilize pressure
The shale gas of sensor measurement loss, is corrected into the volume to shale gas, greatly improves confidence level, meanwhile, utilize temperature
Sensor, understands the shale air volume that different temperatures produces, is of great significance to the true air content of shale in exploration and development.
Brief description of the drawings
Fig. 1 is an a kind of schematic diagram of the device that shale air content is accurately measured based on pressure differential method of the utility model.
Fig. 2 is a kind of schematic diagram that shale air content is accurately measured based on pressure differential method of the utility model.
Embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type embodiment is further described.
Please refer to Fig.1, the embodiment of the utility model, which provides, a kind of accurately measures shale air content based on pressure differential method
Device, including a gas collecting apparatus 1, the lower end of gas collecting apparatus 1 are equipped with a differential pressure pickup 2, and the upper end of gas collecting apparatus 1 is additionally provided with one
Pressure sensor 6, in one embodiment, gas collecting apparatus 1 are a cylinder gas bottle, in a preferred embodiment, used
The radius of gas bottle is 15mm, then sets corresponding differential pressure pickup 2 to meet essence of the volume change more than 0.20 milliliter per hour
Degree requires, and the corresponding height of gas bottle is 300mm at this time, respectively reserves 30mm difference placement forces sensor 6 up and down and pressure difference passes
Sensor 2, actual use height are 240mm, and gas bottle actual use volume is 155mL.
Differential pressure pickup 2 includes up-sampling first 21 and down-sampling first 22, and the up-sampling first 21 is located at the upper of gas collecting apparatus 1
End, the down-sampling first 22 are located at the lower end of gas collecting apparatus 1, and in one embodiment, the DOL Data Output Line of differential pressure pickup 2 is under
End connects, and the DOL Data Output Line of pressure sensor 6 is connected from upper end, and the range of differential pressure pickup 2 is 0-3Kpa, using 4-20 millis
Pacify current output signal, sample rate 200HZ；The range of pressure sensor 6 is 0-120KPa, is exported using 4-20 milliamperes of electric currents
Signal, sample rate 200HZ.
The top side of gas collecting apparatus 1 is provided with into water/gas port 3 and exhaust outlet 4, the lower section side of the gas collecting apparatus 1 and opens
There are discharge outlet 5, the exhaust outlet 4 and discharge outlet 5 to control by solenoid valve (not shown) to open and close.
In one embodiment, water inlet/gas port 3, exhaust outlet 4 and discharge outlet 5 are all connected with fast insert-pull connector and (do not show in figure
Go out), and pass through the instrument (not shown) of the external measurement shale air content of the fast insert-pull connector, the water inlet/gas port
3rd, exhaust outlet 4 and discharge outlet 5 are provided with two points of threaded hole (not shown)s, the water inlet/gas port 3, exhaust outlet 4 and discharge outlet 5
Fast insert-pull connectors are connected by two points of threaded holes, fast insert-pull connector is right angle fast insert-pull connector, outside diameter 6mm, institute
State and connected between fast insert-pull connector and two points of threaded holes by silicone tube (not shown), the solenoid valve is located at silicone tube
On, the solenoid valve is normally closed solenoid valve.
In use, opening exhaust outlet 4, discharge outlet 5 is closed, passes through the water filling into gas collecting apparatus 1 of water inlet/gas port 3, institute
The gas stated in gas collecting apparatus 1 is discharged from exhaust outlet 4, and water is gradually increased to be full of water in the gas collecting apparatus 1.
Then exhaust outlet 4 is closed, opens discharge outlet 5, the water inlet/gas port 3 connects shale gas desorption apparatus and (do not show in figure
Go out), temperature sensor (not shown), in one embodiment, the range of temperature sensor are equipped with shale gas desorption apparatus
For 0-120 DEG C, using 4-20 milliamperes of current output signals, sample rate 200HZ.
The shale gas that shale gas desorption apparatus produces is collected in gas collecting apparatus 1 by the water inlet/gas port 3, meanwhile, temperature
Degree sensor measures the temperature of shale gas desorption in real time, and with the collection of shale gas, water in the gas collecting apparatus is from discharge outlet 5
Discharge, the up-sampling first 21 of the differential pressure pickup 2 measure the pressure of gas in gas collecting apparatus 1, the differential pressure pickup 2 in real time
Down-sampling first 22 measure in real time 1 bottom of gas collecting apparatus liquid pressure, liquid level is obtained by the pressure difference of gas and liquid
Height, and then obtain in gas collecting apparatus collect shale gas volume, pressure sensor 6 measure in real time shale gas desorption apparatus with
The system pressure of 1 connected space of gas collecting apparatus, for being fitted the shale gas of loss, and then corrects the volume of shale gas, that is, obtains
Different temperatures, desorbs the volume of shale gas.
A kind of method that device that shale air content is accurately measured based on pressure differential method is measured, comprises the following steps：
S1. exhaust outlet 4 is opened, discharge outlet 5 is closed, passes through the water filling into gas collecting apparatus 1 of water inlet/gas port 3, the collection
Gas in device of air 1 is discharged from exhaust outlet 4, and water is gradually increased to be full of water in gas collecting apparatus 1；
S2. exhaust outlet 4 is closed, opens discharge outlet 5, the water inlet/gas port 3 connects shale gas desorption apparatus, starts shale
Gas desorption experiment, temperature sensor measure the temperature of shale gas desorption in real time；The shale gas that shale gas desorption apparatus produces passes through
Water inlet/the gas port 3 is collected in gas collecting apparatus 1, and with the collection of shale gas, water in the gas collecting apparatus 1 is from discharge outlet 5
Discharge, the pressure of gas in the real-time measurement gas collecting apparatus 1 of up-sampling first 21 of differential pressure pickup 2, under the differential pressure pickup 2
Sampling head 22 measures the pressure of liquid in gas collecting apparatus 1 in real time, and pressure sensor 2 measures shale gas desorption apparatus and gas collection in real time
The system pressure of 1 connected space of device；
S3. the height of liquid level is obtained according to the pressure difference of the obtained gases of step S2 and liquid, and then calculates gas collecting apparatus 1
The middle volume for collecting shale gas, please refers to Fig.2, and the calculation formula that shale air volume is collected in gas collecting apparatus 1 is as follows：
V=r2π(h-H)
In formula：V is shale air volume；R is the half of gas collecting apparatus internal diameter, and h is the height of gas collecting apparatus, and H is high for liquid level
Degree, Δ P are the pressure difference of gas and liquid, and ρ is the density of water.
Meanwhile loss of the system pressure measured according to pressure sensor 6 to shale gas is fitted, and then obtain difference
Temperature, desorbs the volume of shale gas.
The utility model innovatively applies to the measuring principle of pressure differential method in the design of shale gassiness tester, profit
With differential pressure pickup, by measuring the pressure of liquid level above and below gas collecting apparatus, pressure differential is calculated, gas collection is converted into by pressure differential
The difference in height of device liquid level, so as to calculate the volume of desorption shale gas, obtains desorption shale Gas content, improves measurement result
Accuracy；Design pressure sensor and temperature sensor, using the shale gas of pressure sensor measurement loss, into shale gas
Volume be corrected, greatly improve confidence level, meanwhile, utilize temperature sensor, understand different temperatures produce shale gas
Product, the true air content of shale is of great significance in exploration and development.
Herein, the involved noun of locality such as forward and backward, upper and lower is to be located at parts in attached drawing in figure and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed scope of the application.
In the case where there is no conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
- A kind of 1. device that shale air content is accurately measured based on pressure differential method, it is characterised in that including a gas collecting apparatus, the collection The lower end of device of air is equipped with a differential pressure pickup, and the differential pressure pickup includes up-sampling head and down-sampling head, the up-sampling Head is located at the upper end of gas collecting apparatus, and the down-sampling head is located at the lower end of gas collecting apparatus, and the top side of the gas collecting apparatus is opened Have into water/gas port and exhaust outlet, the lower section side of the gas collecting apparatus and be provided with discharge outlet, the exhaust outlet and discharge outlet pass through electricity Magnet valve control opening and closing, open exhaust outlet, close discharge outlet, pass through water inlet/gas port water filling into gas collecting apparatus, institute The gas stated in gas collecting apparatus is discharged from exhaust outlet, and water is gradually increased to be full of water, closure exhaust in the gas collecting apparatus Mouthful, discharge outlet is opened, the water inlet/gas port connects shale gas desorption apparatus, and being equipped with temperature in the shale gas desorption apparatus passes Sensor, the shale gas that the shale gas desorption apparatus produces is collected in gas collecting apparatus by the water inlet/gas port, with shale The collection of gas, the water in the gas collecting apparatus are discharged from discharge outlet, and the up-sampling head of the differential pressure pickup measures gas collection in real time The pressure of gas in device, the down-sampling head of the differential pressure pickup measure the pressure of liquid in gas collecting apparatus, pass through gas in real time The pressure difference of body and liquid obtains the height of liquid level, and then obtains collecting the volume of shale gas in gas collecting apparatus.
- 2. the device according to claim 1 that shale air content is accurately measured based on pressure differential method, it is characterised in that the pressure The range of gap sensor is 0-3Kpa, using 4-20 milliamperes of current output signals, sample rate 200HZ.
- 3. the device according to claim 1 that shale air content is accurately measured based on pressure differential method, it is characterised in that the collection The upper end of device of air is additionally provided with a pressure sensor, and the pressure sensor measures shale gas desorption apparatus and gas collecting apparatus in real time The system pressure of connected space, for being fitted the shale gas of loss, and then corrects the volume of shale gas.
- 4. the device according to claim 3 that shale air content is accurately measured based on pressure differential method, it is characterised in that the pressure The range of force snesor is 0-120KPa, using 4-20 milliamperes of current output signals, sample rate 200HZ.
- 5. the device according to claim 1 that shale air content is accurately measured based on pressure differential method, it is characterised in that the temperature Degree sensor measures the temperature of shale gas desorption in real time, that is, obtains different temperatures, desorb the volume of shale gas.
- 6. the device according to claim 5 that shale air content is accurately measured based on pressure differential method, it is characterised in that the temperature The range for spending sensor is 0-120 DEG C, using 4-20 milliamperes of current output signals, sample rate 200HZ.
- 7. the device according to claim 1 that shale air content is accurately measured based on pressure differential method, it is characterised in that it is described into Water/gas mouth, exhaust outlet and discharge outlet are all connected with fast insert-pull connector, and are contained by the external measurement shale of the fast insert-pull connector The instrument of tolerance, water inlet/gas port, exhaust outlet and the discharge outlet are provided with two points of threaded holes, the water inlet/gas port, exhaust outlet and Discharge outlet connects fast insert-pull connector by two points of threaded holes.
- 8. the device according to claim 7 that shale air content is accurately measured based on pressure differential method, it is characterised in that described fast Speed plug connector is right angle fast insert-pull connector, and outside diameter 6mm, passes through silica gel between the fast insert-pull connector and two points of threaded holes Pipe connects, and the solenoid valve is located on silicone tube, and the solenoid valve is normally closed solenoid valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721187057.2U CN207366386U (en) | 2017-09-16 | 2017-09-16 | A kind of device that shale air content is accurately measured based on pressure differential method |
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| CN201721187057.2U CN207366386U (en) | 2017-09-16 | 2017-09-16 | A kind of device that shale air content is accurately measured based on pressure differential method |
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| CN207366386U true CN207366386U (en) | 2018-05-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436272A (en) * | 2017-09-16 | 2017-12-05 | 中国地质大学（武汉） | A kind of apparatus and method based on pressure differential method accurate measurement shale air content |
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2017
- 2017-09-16 CN CN201721187057.2U patent/CN207366386U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436272A (en) * | 2017-09-16 | 2017-12-05 | 中国地质大学（武汉） | A kind of apparatus and method based on pressure differential method accurate measurement shale air content |
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