CN206546315U - A kind of hyposmosis tight sand permeability experimental provision - Google Patents
A kind of hyposmosis tight sand permeability experimental provision Download PDFInfo
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- CN206546315U CN206546315U CN201720262111.9U CN201720262111U CN206546315U CN 206546315 U CN206546315 U CN 206546315U CN 201720262111 U CN201720262111 U CN 201720262111U CN 206546315 U CN206546315 U CN 206546315U
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- tight sand
- permeability experimental
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Abstract
The utility model belongs to hyposmosis tight sand Reservoir Development technical field, specifically, it is related to a kind of hyposmosis tight sand permeability experimental provision, including the nitrogen cylinder being sequentially connected, air boost pump, air dryer, the first check valve, first pressure table, core holding unit, second pressure table, the second check valve and measurement tank, also it is sequentially connected with core holding unit in ring pressure valve, pressure sensor and confined pressure pump, measurement tank and is provided with nitrogen gas concn detection sensor.The hyposmosis tight sand permeability experimental provision that the utility model is provided can complete the measure work to core permeability under assigned temperature, pressure, measurement accuracy is high, security is good, the advanced measuring instruments such as wireless digital pressure gauge, wireless nitrogen gas concn detection sensor and handheld terminal have been introduced first, not only increase laboratory automation degree and measurement accuracy, also reduce influence of the human factor to measurement result, experimental provision is in turn simplify simultaneously, is easy to carry and uses.
Description
Technical field
The utility model is related to a kind of hyposmosis tight sand permeability experimental provision, belongs to hyposmosis tight sand
Reservoir Development technical field.
Background technology
Hyposmosis tight sandstone reservoir is a kind of common low porosity and low permeability oil and gas reservoir, in order to verify the fine and close sand of a certain block
The reserves of rock reservoir, are typically all subdrilling a bite prospect pit in this block, and after chance reservoir is bored, PDC drill bit is changed into core drill
Head, carries out continuous sampling operation, and the reservoir core got is sent into core analysis center carries out rock sample Physical Property Analysis, and permeability
As an important physical parameter, reserve analysis, oil-gas mining mode and reservoir protection to reservoir suffer from important finger
Lead effect.
The measurement to core permeability indoor at present is typically all the analyzer set according to Darcy's law, by determining rock
The gas or fluid flow of sample outlet, then calculate with Darcy's law the permeability of tested rock sample.But due to tight sand, shale
There is the characteristic of low porosity and low permeability, the rock sample exit gas or the flow value error of liquid measured with such analyzer with mud stone etc.
It is larger, cause the permeability value deviation that measures big, follow-up oil and gas reserves is calculated, oil-gas mining and reservoir protection bring compared with
Big difficulty.
Utility model content
The utility model provides a kind of hyposmosis tight sand permeability experimental provision, it is intended that solving
The above-mentioned problems in the prior art.
The technical solution of the utility model is as follows：
The utility model provides a kind of hyposmosis tight sand permeability experimental provision, including the nitrogen being sequentially connected
Gas cylinder, air boost pump, air dryer, the first check valve, first pressure table, core holding unit, second pressure table, the second list
To valve and measurement tank.
In the embodiment that the utility model is provided, ring pressure valve, pressure sensing are also sequentially connected with above-mentioned core holding unit
Device and confined pressure pump.
In the embodiment that the utility model is provided, nitrogen gas concn detection sensor is provided with above-mentioned measurement tank.
In the embodiment that the utility model is provided, above-mentioned measurement tank is provided with relief valve.
It is above-mentioned also to include in insulating box, the insulating box provided with rock core clamping in the embodiment that the utility model is provided
Device.
In the embodiment that the utility model is provided, above-mentioned nitrogen cylinder is provided with regulating valve.
It is above-mentioned also to include handheld terminal, the handheld terminal and first pressure in the embodiment that the utility model is provided
Table, second pressure table and nitrogen gas concn detection sensor, and can simultaneous display and record entry pressure, outlets by wireless connection
Nitrogen gas concn in pressure and measurement tank.
In the embodiment that the utility model is provided, above-mentioned first pressure table and second pressure table are ZHT-220 wireless
Digital pressure gauge.
In the embodiment that the utility model is provided, above-mentioned nitrogen gas concn detection sensor passes for big peace IGM100-N2
Sensor.
In the embodiment that the utility model is provided, above-mentioned wireless connection is GPRS connections or WIFI connections.
The beneficial effects of the utility model are：The hyposmosis tight sand permeability experiment measurement dress that the utility model is provided
The measure work to core permeability can be completed under assigned temperature, pressure by putting, and measurement accuracy is high, security is good：Insulating box
It ensure that rock core is in temperature constant state all the time during permeability survey, eliminate the permeability caused by core temperature changes
Measurement error；First check valve is avoided when rock core builds the pressure, and the escaping gas in high pressure nitrogen and rock core is back to nitrogen
Nitrogen gas purity is reduced after bottle, causes permeability survey error；Second check valve reduces measurement tank middle and high concentration mixed gas pair
The influence of second pressure table measured value.In addition, the permeability experimental provision introduced wireless digital pressure gauge first, it is wireless
The advanced measuring instrument such as nitrogen gas concn detection sensor and handheld terminal, not only increases laboratory automation degree and measurement essence
Degree, also reduces influence of the human factor to measurement result, while in turn simplify experimental provision, is easy to carry and uses.
Brief description of the drawings
, below will be to required in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
The accompanying drawing used is briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore not
The restriction to scope is should be considered as, for those of ordinary skill in the art, on the premise of not paying creative work,
Other related accompanying drawings can also be obtained according to these accompanying drawings.
The hyposmosis tight sand permeability experimental provision structure chart that Fig. 1 the utility model is provided.
Shown in figure：100- hyposmosis tight sand permeability experimental provisions；1- nitrogen cylinders；2- regulating valves；3- is empty
Gas booster pump；4- air dryers；The check valves of 5- first；6- first pressure tables；7- core holding units；8- insulating boxs；9- rock cores；
10- second pressure tables；The check valves of 11- second；12- nitrogen gas concn detection sensors；13- measures tank；14- relief valves；15- rings
Pressure valve；16- pressure sensors；17- confined pressure pumps；18- handheld terminals.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality
Accompanying drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, and shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.Therefore, below
It is new that the detailed description of embodiment of the present utility model to providing in the accompanying drawings is not intended to limit this claimed practicality
The scope of type, but it is merely representative of selected embodiment of the present utility model.Based on the embodiment in the utility model, ability
The every other embodiment that domain those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
In description of the present utility model, it is to be understood that the term of indicating position or position relationship is based on accompanying drawing
Shown orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply institute
The equipment or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this reality
With new limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is on or below second feature
Can directly it be contacted including the first and second features, it is not direct contact but by it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the
Directly over two features and oblique upper, or fisrt feature level height is merely representative of higher than second feature.Fisrt feature is special second
Under levying, lower section and fisrt feature included below are immediately below second feature and obliquely downward, or are merely representative of fisrt feature level
Highly it is less than second feature.
Embodiment：
Such as Fig. 1, the utility model provides a kind of hyposmosis tight sand permeability experimental provision 100, including according to
Secondary connected nitrogen cylinder 1, air boost pump 3, air dryer 4, the first check valve 5, first pressure table 6, core holding unit 7,
Ring pressure valve 15, pressure sensing are also sequentially connected with second pressure table 10, the second check valve 11 and measurement tank 13, core holding unit 7
Device 16 and confined pressure pump 17.
Nitrogen cylinder 1 is high-purity nitrogen, and the bottle mouth position of nitrogen cylinder 1 is equipped with regulating valve 2, for adjusting gas output.
Air boost pump 3 is used to be forced into the admission pressure needed for experiment to nitrogen.
Air dryer 4 is anhydrous calcium chloride drying tube, good to the drying effect of nitrogen.
First check valve 5 is avoided when rock core builds the pressure, and the escaping gas in high pressure nitrogen and rock core is back to nitrogen
Nitrogen gas purity is reduced after bottle 1, causes permeability survey error.
First pressure table 6 is used to measure the porch gas pressure of core holding unit 7, and second pressure table 10 is used to measure rock core
The exit gas pressure of clamper 7.
Rock core 9 to be measured is provided with core holding unit 7.
Second check valve 11 reduces influence of the measurement middle and high concentration mixed gas of tank 13 to the measured value of second pressure table 10.
Measure and nitrogen gas concn detection sensor 12 is provided with tank 13, the concentration for detecting nitrogen in measurement tank 13, the survey
Relief valve 14, relief valve 14 and atmosphere are additionally provided with measuring tank 13, for the middle and high concentration of tank 13 will to be measured after measurement terminates
Gas is discharged, and because the detection gas selected in experiment is high-purity nitrogen, and nitrogen belongs to uncontaminated gases, can directly arrange
It is put into air.
Ring pressure valve 15 and confined pressure pump 17 are used to add confined pressure to the annular space of core holding unit 7, with the increase of annular space confined pressure, rock core
Confined pressure set in clamper 7 firmly encases the outer wall of rock core 9, prevents rock core 9 from being covered with confined pressure and directly occurs seepage, secondly confined pressure set
Also the inwall of core holding unit 7 connected the two ends of rock core 9 and with it is sufficient filling with, and is played good sealing effectiveness, is prevented rock core
9 two ends receive the influence of confined pressure.
Pressure sensor 16 is used to determine in the annular pressure, general core experiment, and confined pressure scope is in 1.0-1.7MPa.
The utility model also includes insulating box 8, and above-mentioned core holding unit 7 is placed in the insulating box 8.
The utility model also includes handheld terminal 18, the handheld terminal 18 and first pressure table 6, second pressure table 10 and nitrogen
Gas concentration detection sensor 12, and can simultaneous display and record entry pressure by wireless connection (GPRS connections or WIFI connections)
Nitrogen gas concn in power, outlet pressure and measurement tank 13.
Specifically, in the present embodiment, above-mentioned first pressure table 6 and second pressure table 10 are ZHT-220 wireless digitals
Pressure gauge, its measurement range is -100KPa-250MPa, and precision is 0.5 grade, and the wireless digital pressure gauge of the model also may be used in addition
Measure the gas viscosity passed through.
Specifically, in the present embodiment, above-mentioned nitrogen gas concn detection sensor 12 is big peace IGM100-N2 sensors,
Its measurement range is 0-100%vol, and precision is 3%FS.
For the low porosity and low permeability class rock core such as tight sand, shale and mud stone, the gas flow in clamper exit is very small,
It is difficult to directly be measured with flowmeter, therefore the hyposmosis tight sand permeability experimental provision 100 that the utility model is provided
By determine detection source of the gas (nitrogen) measurement tank 13 in concentration and extrapolate gas flow of the rock core in its exit, its examine
The relational expression surveyed between source of the gas concentration and exit gas flow is shown in formula (1)：
In formula：Qg is rock core exit gas flow, mL/s；
Δ Cg is the change in concentration amount of detection source of the gas in measurement tank, mg/cm3；
V is the volume of measurement tank, cm3；
Δ T is the variable quantity of corresponding time, s.
In above-mentioned formula 1, Δ Cg is within this period time T1 to T2 (i.e. Δ T=T2-T1), in measurement tank 13
Detect the concentration converted quantity of source of the gas.Detection source of the gas is nitrogen in the present embodiment, and wherein T1, T2 time corresponding nitrogen gas concn is surveyed
Value all shows and recorded in handheld terminal 18.
Then by measuring the inlet pressure of rock core, outlet pressure, atmospheric pressure, rock sample length, rock sample sectional area, gas
Viscosity, the permeability of surveyed rock core is calculated finally according to computing permeability formula, and computing permeability formula is shown in formula (2)：
In formula：P0For atmospheric pressure, MPa；
Qg is rock core exit gas flow, mL/s；
μ is gas viscosity, Pas；
L is the length of rock core to be measured, cm；
A is the sectional area of rock core to be measured, cm2；
Δ P is the pressure differential at rock core two ends, MPa.
Before experiment, atmospheric pressure, rock sample length, the rock sample sectional area of first determination experiment room.
Specific measurement process is as follows：Rock core 9 is put into the confined pressure of core holding unit 7 set, ring pressure valve 15 and confined pressure is opened
Pump 17, to core holding unit 7 plus confined pressure, after the pressure value shown on pressure sensor 16 reaches experiment specified pressure value, is closed
Closed loop pressure valve 15, closes confined pressure pump 17, starts insulating box 8, allows core holding unit 7 to reach the assigned temperature needed for experiment, and
The temperature is remained in the overall process of core experiment measurement, the pressure regulator valve in nitrogen cylinder 1 is then opened, opens relief valve 14,
Start air boost pump 3 nitrogen is pressurized to after certain pressure by drier to detecting that place is dried in gas (nitrogen)
Reason, then passes sequentially through and is reached after the first check valve 5, first pressure table 6, rock core 9, second pressure table 10, the second check valve 11
Measure in tank 13, and maintain this process several minutes (generally 5-10min), treat the air discharge in pipeline and each laboratory apparatus
After clean, relief valve 14 is closed, handheld terminal 18 is opened, first pressure table 6, second pressure table 10 and nitrogen gas concn are detected and passed
Sensor 12 is corrected, and then measures the nitrogen gas concn in now measurement tank 13 using nitrogen gas concn detection sensor 12, now
Simultaneous display is understood on handheld terminal 18 and time, first pressure table 6, second pressure table 10 and nitrogen gas concn value is recorded, selected
The different periods carries out computing permeability with formula 1 and formula 2, and multigroup permeability value obtained by calculating is weighted into place
Reason, obtains final high-precision permeability, after experiment terminates, closes regulating valve 2, air boost pump 3 and insulating box 8, opens ring
The nitrogen-rich gas in ring pressure and discharge measuring tank 13 in pressure valve 15, relief valve 14, release core holding unit 7.
The hyposmosis tight sand permeability experimental provision that the utility model is provided has the beneficial effect that：This practicality is new
The hyposmosis tight sand permeability experimental provision that type is provided can be completed to core permeability under assigned temperature, pressure
Measure work, measurement accuracy is high, security is good：Insulating box ensure that rock core is in constant temperature all the time during permeability survey
State, eliminates the permeability survey error caused by core temperature changes；First check valve is avoided when rock core builds the pressure, high
Escaping gas in pressure nitrogen and rock core, which is back to after nitrogen cylinder, reduces nitrogen gas purity, causes permeability survey error；Second
Check valve reduces influence of the measurement tank middle and high concentration mixed gas to second pressure table measured value.In addition, the permeability is tested
Measurement apparatus has introduced the advanced measuring instruments such as wireless digital pressure gauge, wireless nitrogen gas concn detection sensor and handheld terminal first
Device, not only increases laboratory automation degree and measurement accuracy, influence of the human factor to measurement result is also reduced, while again
Experimental provision is simplified, is easy to carry and uses.
It is described above, not make any formal limitation to the utility model, although the utility model is with embodiment
It is disclosed above, but the utility model is not limited to, any those skilled in the art are new not departing from this practicality
In the range of type technical scheme, when the technology contents using the disclosure above make a little change or are modified to the equivalent of equivalent variations
Embodiment, as long as being the content without departing from technical solutions of the utility model, according to technical spirit of the present utility model to real above
Any simple modification, equivalent variations and modification that example made are applied, in the range of still falling within technical solutions of the utility model.
Claims (10)
1. a kind of hyposmosis tight sand permeability experimental provision, it is characterised in that including nitrogen cylinder, the sky being sequentially connected
Gas booster pump, air dryer, the first check valve, first pressure table, core holding unit, second pressure table, the second check valve and
Measure tank.
2. hyposmosis tight sand permeability experimental provision according to claim 1, it is characterised in that rock core is clamped
Ring pressure valve, pressure sensor and confined pressure pump are also sequentially connected with device.
3. hyposmosis tight sand permeability experimental provision according to claim 2, it is characterised in that in measurement tank
Provided with nitrogen gas concn detection sensor.
4. hyposmosis tight sand permeability experimental provision according to claim 1, it is characterised in that also including perseverance
Core holding unit is provided with incubator, the insulating box.
5. hyposmosis tight sand permeability experimental provision according to claim 1, it is characterised in that the nitrogen
Bottle is provided with regulating valve.
6. hyposmosis tight sand permeability experimental provision according to claim 1, it is characterised in that also including hand
Hold terminal, the handheld terminal with first pressure table, second pressure table and nitrogen gas concn detection sensor by wireless connection, and
Nitrogen gas concn that can be in simultaneous display and record entry pressure, outlet pressure and measurement tank.
7. hyposmosis tight sand permeability experimental provision according to claim 6, it is characterised in that described first
Pressure gauge and second pressure table are ZHT-220 wireless digital pressure gauges.
8. hyposmosis tight sand permeability experimental provision according to claim 7, it is characterised in that the nitrogen
Concentration detection sensor is big peace IGM100-N2 sensors.
9. hyposmosis tight sand permeability experimental provision according to claim 8, it is characterised in that described wireless
It is connected as GPRS connections or WIFI connections.
10. the hyposmosis tight sand permeability experimental provision according to any one of claim 1 to 9, its feature exists
In the measurement tank is provided with relief valve.
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| CN201720262111.9U CN206546315U (en) | 2017-03-17 | 2017-03-17 | A kind of hyposmosis tight sand permeability experimental provision |
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| CN201720262111.9U CN206546315U (en) | 2017-03-17 | 2017-03-17 | A kind of hyposmosis tight sand permeability experimental provision |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152105A (en) * | 2017-12-26 | 2018-06-12 | 西南石油大学 | The saturation device and method of a kind of tight rock |
| CN108318398A (en) * | 2018-01-08 | 2018-07-24 | 中国石油天然气股份有限公司 | Experimental device and experimental method for high-temperature high-pressure oil displacement efficiency of heavy oil reservoir |
| CN108956419A (en) * | 2018-07-03 | 2018-12-07 | 武汉索克能源科技有限公司 | A kind of core permeability test device and method under stress wave impulse action |
| CN109612899A (en) * | 2018-11-19 | 2019-04-12 | 中国矿业大学 | A kind of pressure correction formula gas permeability calculation method |
-
2017
- 2017-03-17 CN CN201720262111.9U patent/CN206546315U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152105A (en) * | 2017-12-26 | 2018-06-12 | 西南石油大学 | The saturation device and method of a kind of tight rock |
| CN108152105B (en) * | 2017-12-26 | 2020-04-14 | 西南石油大学 | Saturation device and method for compact rock |
| CN108318398A (en) * | 2018-01-08 | 2018-07-24 | 中国石油天然气股份有限公司 | Experimental device and experimental method for high-temperature high-pressure oil displacement efficiency of heavy oil reservoir |
| CN108956419A (en) * | 2018-07-03 | 2018-12-07 | 武汉索克能源科技有限公司 | A kind of core permeability test device and method under stress wave impulse action |
| CN109612899A (en) * | 2018-11-19 | 2019-04-12 | 中国矿业大学 | A kind of pressure correction formula gas permeability calculation method |
| CN109612899B (en) * | 2018-11-19 | 2021-04-27 | 中国矿业大学 | Pressure correction type gas permeability calculation method |
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