CN206470161U - The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect - Google Patents
The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect Download PDFInfo
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- CN206470161U CN206470161U CN201621168129.4U CN201621168129U CN206470161U CN 206470161 U CN206470161 U CN 206470161U CN 201621168129 U CN201621168129 U CN 201621168129U CN 206470161 U CN206470161 U CN 206470161U
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Abstract
The utility model discloses the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect, it is related to the rock mechanics testing field in Geotechnical Engineering.It includes data acquisition and processing system, triaxial pressure system；The triaxial pressure system includes pressure indoor, axle pressure chamber, test cabinet, confined pressure closed loop servo measuring pump, axle pressure closed loop servo measuring pump and osmotic pressure closed loop servo measuring pump；The axle pressure chamber cylinder barrel is connected to pressure indoor cylinder barrel upper end, and is bolted sealing with the pressure indoor cylinder barrel, connects into an entirety；The data acquisition and processing system is arranged on the outside of the triaxial pressure system, and presses closed loop servo measuring pump and the osmotic pressure closed loop servo measuring pump to be connected in the triaxial pressure system by the confined pressure closed loop servo measuring pump, the axle respectively.Overcome that prior art measurement accuracy is poor, be only capable of providing confined pressure, can not truly simulate the shortcoming of stress of the deep rock mass under triaxial stress effect.
Description
Technical field
The utility model is related to the rock mechanics testing field in Geotechnical Engineering, and more specifically triaxial stress is made
With lower Oil in Super-low Permeability rock permeability measurement apparatus.
Background technology
Permeability is one of important physical parameter of rock, the deep for understanding unconventionaloil pool field and nuclear waste storage
The physical characteristic of rock mass is even more important；And along with the exploitation of shale gas in recent years, tight sand oil gas etc., urgently need one
The device of Oil in Super-low Permeability rock mass permeability under measurement triaxial state of stress is planted, this is proposed to experimental principle now and laboratory apparatus
No small challenge.
The laboratory apparatus of most of measurement rock permeabilities all uses the principle such as steady state method or pressure pulse method at present, right
Oil in Super-low Permeability rock mass in the reservoir of unconventionaloil pool field, this kind of method of testing exist measuring principle fall behind, measurement accuracy difference lack
Point, therefore and do not apply to this Oil in Super-low Permeability rock mass permeability measurement；Measurement Oil in Super-low Permeability rock permeability is popular at present
Method is pressure oscillations method, and the principle of this method is by applying known osmotic pressure Reeb in rock sample upstream, being surveyed in downstream
Corresponding osmotic pressure Reeb is measured, Oil in Super-low Permeability rock permeability is drawn by the waveform of contrast between the two.
Certain lack then is there is in a small amount of instrument using pressure oscillations method measurement Oil in Super-low Permeability rock mass permeability domestic at present
Point；The patent of Application No. 201310518094.7《A kind of cross-correlation skill for measuring Oil in Super-low Permeability rock permeability stress sensitivity
Art》In employ pressure oscillations method measure Oil in Super-low Permeability rock permeability, but the device be only capable of provide confined pressure, it is impossible to provide three
The trystate of axial stress, it is impossible to stress of the true simulation deep rock mass under triaxial stress effect.
Therefore develop it is a can measure Oil in Super-low Permeability rock permeability well, and can the good rock mass of true simulation three
The instrument of axial stress state is just particularly important.
The content of the invention
The purpose of this utility model is to provide the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect, can be well
Measure Oil in Super-low Permeability rock permeability, the trystate of triaxial stress is provided, the triaxial state of stress of the true simulation rock mass of energy.
In order to realize the purpose of this utility model, the technical solution of the utility model is：The lower Oil in Super-low Permeability of triaxial stress effect
Rock permeability measurement apparatus, including data acquisition and processing system, it is characterised in that：Also include triaxial pressure system；It is described
Triaxial pressure system include pressure indoor, axle pressure chamber, test cabinet, confined pressure closed loop servo measuring pump, axle pressure closed loop servo measuring pump and
Osmotic pressure closed loop servo measuring pump；Cylinder barrel includes axle pressure chamber cylinder barrel and pressure indoor cylinder barrel；The axle pressure chamber cylinder barrel is connected to described
Pressure indoor cylinder barrel upper end, and with the pressure indoor cylinder barrel be bolted sealing, connect into an entirety；
The pressure indoor includes pressure indoor base, the pressure indoor cylinder barrel；The axle pressure chamber includes axial piston, the axle
Pressure chamber cylinder barrel, axle pressure chamber top cover；
The axial piston be located at the axle pressure chamber in, the axle pressure chamber cylinder barrel upper end be provided with the axle pressure chamber top cover,
Lower end is connected on the pressure indoor cylinder barrel, and the pressure indoor cylinder barrel lower end is provided with the pressure indoor base；
The test cabinet is located in the pressure indoor cylinder barrel, has upstream hole pressure pad block to be located at the test cabinet and the axle
To between piston,
There is sample to be arranged in the test cabinet, there is permeable backing plate to be arranged at the sample upper and lower ends, the sample, institute
Permeable backing plate is stated tightly to be wrapped up by rubber sleeve；There are two clips to be respectively arranged at the upper and lower ends of the rubber sleeve；
The data acquisition and processing system is arranged on the outside of the triaxial pressure system, and is closed respectively by the confined pressure
Ring servo measuring pump, axle pressure closed loop servo measuring pump and the osmotic pressure closed loop servo measuring pump are connected to the three axles pressure
On Force system.
In the above-mentioned technical solutions, the confined pressure closed loop servo measuring pump, axle pressure closed loop servo measuring pump, described ooze
The structure of pressure closed loop servo measuring pump is identical thoroughly, and includes the pump housing, pump piston, pressure sensor, servo control module and watch
Take motor；The pressure sensor of the confined pressure closed loop servo measuring pump is confined pressure sensor, axle pressure closed loop servo meter
The pressure sensor of amount pump is on axle pressure sensor, the pressure sensor of the osmotic pressure closed loop servo measuring pump are
Swim hole pressure sensor, downstream hole pressure sensor.
In the above-mentioned technical solutions, the two ends of the confined pressure sensor are connected in the confined pressure closed loop servo measuring pump respectively
Servo control module and connect the axle pressure respectively towards the two ends of the pipeline of the pressure indoor lower end, the axle pressure sensor
Servo control module in closed loop servo measuring pump and the pipeline towards the axle pressure chamber upper end, the upstream hole pressure sensor
Two ends connect the servo control module and pipeline, the downstream hole pressure sensor towards the test cabinet upper end respectively
The passage connection of the test cabinet bottom is connected with the pressure indoor base；The servo control module and the servomotor
Connection, the servomotor is connected with the pump piston, and the pump piston is located in the pump housing.
In the above-mentioned technical solutions, the permeable backing plate include upper permeable backing plate, under permeable backing plate, the upper permeable backing plate
Be arranged at the sample upper end, it is described under permeable backing plate be arranged at the sample lower end；The confined pressure sensor, axle pressure are passed
Sensor, the upstream hole pressure sensor, the downstream hole pressure sensor transfer data to the number by data collecting card
According in collection and processing system.Real-time monitoring and control of the computer to data overall process are realized, coordinates related software to calculate automatically
Go out experimental result, it is time saving and energy saving, it is to avoid human error.
The utility model has the following advantages that：
(1) Oil in Super-low Permeability rock permeability can be measured well；
(2) trystate of triaxial stress, the triaxial state of stress of the good rock mass of the true simulation of energy can be provided；
(3) test sample is tightly wrapped up by rubber sleeve in test cabinet, and wherein one piece of permeable backing plate is respectively placed in sample top and the bottom,
Permeable backing plate is identical with sample size, and sample and two pieces of permeable backing plates are closely seated in by rubber sleeve by two clips
Between hole pressure head and pressure indoor base；Ensure the sealing of test cabinet；Pressure indoor is strictly isolated with laboratory, prevent from applying
Plus it is not in place on measurement result generation influence due to sealing during osmotic pressure；
(4) real-time monitoring and control of the computer to data overall process are realized, coordinates related software to calculate experiment knot automatically
Really, it is time saving and energy saving, it is to avoid human error；Data are handled using signal processing technology, measurement accuracy is high；
(5) simple to operate, principle is advanced and mature.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that the utility model implements measurement Oil in Super-low Permeability rock permeability hole corrugating correlation under triaxial state of stress
Figure.
1- pressure indoors in figure, 2- pressure indoor bases, 3- pressure indoors cylinder barrel and axle pressure chamber cylinder barrel, 31- axle pressure chamber cylinder barrels, 32-
On pressure indoor cylinder barrel, 4- axle pressure chambers, 5- axial pistons, 6- axle pressure chamber top covers, 7- upstreams hole pressure pad block, the permeable backing plates of 8-, 81-
Permeable backing plate under permeable backing plate, 82-, 9- samples, 10- clips, 11- rubber sleeves, 13- confined pressure sensors, 14- confined pressure closed loop servos
Measuring pump, 16- axle pressure sensors, 17- axles pressure closed loop servo measuring pump, 19- upstreams hole pressure sensor, 20- osmotic pressure closed loops
Servo measuring pump, 22- downstreams hole pressure sensor, 23- data acquisition and processing systems, 24- triaxial pressure systems, 25- tests
Room, I-upper Pore Pressure Reeb, II-lower hole pressure wave.
Embodiment
Describe performance of the present utility model in detail below in conjunction with the accompanying drawings, but they are not constituted to of the present utility model
Limit, it is only for example.Make advantage of the present utility model more clear by explanation simultaneously and be readily appreciated that.
Understood refering to accompanying drawing：The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect, including data acquisition and place
Reason system 23, it is characterised in that：Also include triaxial pressure system 24；The triaxial pressure system 24 includes pressure indoor 1, axle pressure chamber
4th, test cabinet 25, confined pressure closed loop servo measuring pump 14, axle pressure closed loop servo measuring pump 17 and osmotic pressure closed loop servo measuring pump 20；
Cylinder barrel 3 includes axle pressure chamber cylinder barrel 31 and pressure indoor cylinder barrel 32；The axle pressure chamber cylinder barrel 31 is connected on the pressure indoor cylinder barrel 32
Hold, and be bolted sealing with the pressure indoor cylinder barrel 32, connect into an entirety；
The pressure indoor 1 includes pressure indoor base 2, the pressure indoor cylinder barrel 32；The axle pressure chamber 4 include axial piston 5,
The axle pressure chamber cylinder barrel 31, axle pressure chamber top cover 6；
The axial piston 5 is located in the axle pressure chamber 4, and the upper end of axle pressure chamber cylinder barrel 31 is provided with the axle pressure chamber top
Lid 6, the lower end of pressure indoor cylinder barrel 32 is provided with the pressure indoor base 2；
The test cabinet 25 is located in the pressure indoor cylinder barrel 32, has upstream hole pressure pad block 7 to be located at the test cabinet 25
Between the axial piston 5,
There is sample 9 to be arranged in the test cabinet 25, there is permeable backing plate 8 to be arranged at the upper and lower ends of sample 9, the examination
Sample 9, the permeable backing plate 8 are tightly wrapped up by rubber sleeve 11；There are two clips 10 to be respectively arranged at the rubber sleeve about 11
Two ends；
The data acquisition and processing system 23 is arranged at the outside of triaxial pressure system 24, and is enclosed respectively by described
Pressure closed loop servo measuring pump 14, axle pressure closed loop servo measuring pump 17 and the osmotic pressure closed loop servo measuring pump 20 are connected to
In the triaxial pressure system 24.
The confined pressure closed loop servo measuring pump 14, axle pressure closed loop servo measuring pump 17, the osmotic pressure closed loop servo
The structure of measuring pump 20 is identical, and includes the pump housing, pump piston, pressure sensor, servo control module and servomotor；It is described
The pressure sensor of confined pressure closed loop servo measuring pump 14 is confined pressure sensor 13, axle pressure closed loop servo measuring pump 17
The pressure sensor is that axle pressure sensor 16, the pressure sensor of the osmotic pressure closed loop servo measuring pump 20 are upstream
Hole pressure sensor 19, downstream hole pressure sensor 22.
The two ends of the confined pressure sensor 13 connect the servo control module in the confined pressure closed loop servo measuring pump respectively
The axle pressure closed loop servo meter is connected respectively with the pipeline towards the lower end of pressure indoor 1, the two ends of the axle pressure sensor 16
Measure the servo control module in pump and the two ends towards the pipeline of the upper end of axle pressure chamber 4, the upstream hole pressure sensor 19
Connect respectively the servo control module and towards the pipeline of the upper end of test cabinet 25, the downstream hole pressure sensor 22 with
The passage connection of the bottom of test cabinet 25 is connected on the pressure indoor base 2；The servo control module and servo electricity
Machine is connected, and the servomotor is connected with the pump piston, and the pump piston is located in the pump housing.
The permeable backing plate 8 include upper permeable backing plate 81, under permeable backing plate 82, the upper permeable backing plate 81 is arranged at described
The upper end of sample 9, it is described under permeable backing plate 82 be arranged at the lower end of sample 9；The confined pressure sensor 13, the axle pressure sensor
16th, the upstream hole pressure sensor 19, the downstream hole pressure sensor 22 are transferred data to described by data collecting card
In data acquisition and processing system 23.
I is upper Pore Pressure Reeb in Fig. 2, and amplitude and frequency are applied to rock sample by percolation path by osmotic pressure servopump
Sinusoidal osmotic pressure Reeb, the servo control molding of control servopump in triaxial pressure system 24 of its amplitude and frequency known to rate
Block is controlled, and the measurement of its amplitude and frequency is measured by upper osmolarity sensor 19, ultimately form the osmotic pressure of osmotic pressure-
Temporal image；Due to the influence of rock sample permeability, when upstream sine osmotic pressure Reeb is inside by rock sample, it shakes
Width can decay, and the downstream hole pressure wave II in hysteresis effect, that is, figure can also occur for phase；Likewise, lower hole
The measurement of pressure is measured by lower osmolarity sensor 22, ultimately forms osmotic pressure-temporal image of lower osmotic pressure；Thus can be straight
The Amplitude Ration α and phase delay θ that obtain upper and lower Pore Pressure amplitude seen, passes through permeability and the width of upper and lower Pore Pressure amplitude
It is worth the relation than α and phase delay θ, finally calculates the permeability of rock sample.
The course of work of the lower Oil in Super-low Permeability rock permeability measurement apparatus of the utility model triaxial stress effect is as follows：Choose super
Hypotonic rock, and the cylinder experimental member of standard is processed into, obtain sample 9；With rubber sleeve 11 by the saturating of the upper and lower ends of sample 9
Water cushion plate 8, sample 9 are wrapped between upstream hole pressure pad block 7 and pressure indoor base 2, and with two banding rubber sleeves of clip 10
11 upper and lower ends；Closed loop servo measuring pump 17 is pressed to apply confined pressure and axle to sample 9 by confined pressure closed loop servo measuring pump 14, axle
Particular value is depressed into, while applying osmotic pressure to sample 9 by osmotic pressure closed loop servo measuring pump 20 so that the saturation of sample 9；Wait to try
After the osmotic pressure of sample 9 pressurization saturation, pressed by osmotic pressure closed loop servo measuring pump 20 to sinusoidal known to the application of sample 9 amplitude, frequency
Reeb, while recording the situation of downstream pore pressure ripple II by downstream hole pressure sensor 22, and real-time data transmission is arrived
DATA REASONING and acquisition system 23；Change confined pressure, axle pressure size, waveform cross-correlation method is used for the measurement of permeability, to not
Sample 9 in the case of same confined pressure, axle pressure carries out permeability analysis, draws the permeability under the conditions of different confined pressures, axle pressure.
Other unaccounted parts belong to prior art.
Claims (4)
1. the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect, including data acquisition and processing system (23), it is special
Levy and be：Also include triaxial pressure system (24)；The triaxial pressure system (24) includes pressure indoor (1), axle pressure chamber (4), surveyed
Try room (25), confined pressure closed loop servo measuring pump (14), axle pressure closed loop servo measuring pump (17) and osmotic pressure closed loop servo measuring pump
(20)；Cylinder barrel (3) includes axle pressure chamber cylinder barrel (31) and pressure indoor cylinder barrel (32)；The axle pressure chamber cylinder barrel (31) is connected to described enclose
Pressure chamber cylinder barrel (32) upper end, and with the pressure indoor cylinder barrel (32) be bolted sealing, connect into an entirety；
The pressure indoor (1) includes pressure indoor base (2), the pressure indoor cylinder barrel (32)；The axle pressure chamber (4) includes axially living
Fill in (5), the axle pressure chamber cylinder barrel (31), axle pressure chamber top cover (6)；
The axial piston (5) is located in the axle pressure chamber (4), and axle pressure chamber cylinder barrel (31) upper end is provided with the axle pressure chamber
Top cover (6), pressure indoor cylinder barrel (32) lower end is provided with the pressure indoor base (2)；
The test cabinet (25) is located in the pressure indoor cylinder barrel (32), has upstream hole pressure pad block (7) to be located at the test cabinet
(25) between the axial piston (5),
There is sample (9) to be arranged in the test cabinet (25), there is permeable backing plate (8) to be arranged at the sample (9) upper and lower ends, institute
Sample (9), the permeable backing plate (8) is stated tightly to be wrapped up by rubber sleeve (11)；There are two clips (10) to be respectively arranged at the rubber
The upper and lower ends of gum cover (11)；
The data acquisition and processing system (23) is arranged on the outside of the triaxial pressure system (24), and is enclosed respectively by described
Press closed loop servo measuring pump (14), axle pressure closed loop servo measuring pump (17) and the osmotic pressure closed loop servo measuring pump (20)
It is connected on the triaxial pressure system (24).
2. the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect according to claim 1, it is characterised in that：Institute
State confined pressure closed loop servo measuring pump (14), axle pressure closed loop servo measuring pump (17), the osmotic pressure closed loop servo measuring pump
(20) structure is identical, and includes the pump housing, pump piston, pressure sensor, servo control module and servomotor；The confined pressure
The pressure sensor of closed loop servo measuring pump (14) is confined pressure sensor (13), axle pressure closed loop servo measuring pump (17)
The pressure sensor be axle pressure sensor (16), the pressure sensor of the osmotic pressure closed loop servo measuring pump (20)
For upstream hole pressure sensor (19), downstream hole pressure sensor (22).
3. the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect according to claim 2, it is characterised in that：Institute
The two ends for stating confined pressure sensor (13) connect servo control module in the confined pressure closed loop servo measuring pump and towards institute respectively
State the pipeline of pressure indoor (1) lower end, the two ends of the axle pressure sensor (16) and connect the axle pressure closed loop servo measuring pump respectively
In servo control module and towards the pipeline of axle pressure chamber (4) upper end, the two ends of the upstream hole pressure sensor (19)
The servo control module and pipeline, the downstream hole pressure sensor towards the test cabinet (25) upper end are connected respectively
(22) the passage connection of the test cabinet (25) bottom is connected with the pressure indoor base (2)；The servo control module with
The servomotor connection, the servomotor is connected with the pump piston, and the pump piston is located in the pump housing.
4. the lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect according to claim 3, it is characterised in that：Institute
State permeable backing plate (8) including upper permeable backing plate (81), under permeable backing plate (82), the upper permeable backing plate (81) is arranged at the examination
Sample (9) upper end, it is described under permeable backing plate (82) be arranged at the sample (9) lower end；The confined pressure sensor (13), the axle pressure
Sensor (16), the upstream hole pressure sensor (19), the downstream hole pressure sensor (22) are passed by data collecting card
Data are sent into the data acquisition and processing system (23).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168129.4U CN206470161U (en) | 2016-10-26 | 2016-10-26 | The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621168129.4U CN206470161U (en) | 2016-10-26 | 2016-10-26 | The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect |
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| CN206470161U true CN206470161U (en) | 2017-09-05 |
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|---|---|---|---|
| CN201621168129.4U Active CN206470161U (en) | 2016-10-26 | 2016-10-26 | The lower Oil in Super-low Permeability rock permeability measurement apparatus of triaxial stress effect |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323841A (en) * | 2016-10-26 | 2017-01-11 | 中国科学院武汉岩土力学研究所 | Device for measuring permeability of ultra-low permeability rocks under action of triaxial stress |
| CN109253962A (en) * | 2018-10-30 | 2019-01-22 | 山东大学 | Rock three-axis force Penetration Signature tester and test method |
| CN110501272A (en) * | 2019-07-25 | 2019-11-26 | 中国科学院武汉岩土力学研究所 | The method for testing porous rock porosity and permeability simultaneously under the conditions of triaxial stress and pore pressure |
-
2016
- 2016-10-26 CN CN201621168129.4U patent/CN206470161U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323841A (en) * | 2016-10-26 | 2017-01-11 | 中国科学院武汉岩土力学研究所 | Device for measuring permeability of ultra-low permeability rocks under action of triaxial stress |
| CN109253962A (en) * | 2018-10-30 | 2019-01-22 | 山东大学 | Rock three-axis force Penetration Signature tester and test method |
| CN109253962B (en) * | 2018-10-30 | 2021-12-28 | 山东大学 | Rock triaxial mechanical permeability characteristic tester and testing method |
| CN110501272A (en) * | 2019-07-25 | 2019-11-26 | 中国科学院武汉岩土力学研究所 | The method for testing porous rock porosity and permeability simultaneously under the conditions of triaxial stress and pore pressure |
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