CN104034644A - Multiphase seepage medium triaxial stress seepage coupling test device capable of rapidly measuring porosity - Google Patents

Multiphase seepage medium triaxial stress seepage coupling test device capable of rapidly measuring porosity Download PDF

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CN104034644A
CN104034644A CN201410259243.7A CN201410259243A CN104034644A CN 104034644 A CN104034644 A CN 104034644A CN 201410259243 A CN201410259243 A CN 201410259243A CN 104034644 A CN104034644 A CN 104034644A
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upstream
pipeline
gas
downstream
valve
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CN104034644B (en
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徐卫亚
俞隽
王如宾
贾朝军
张久长
张强
闫龙
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Hohai University HHU
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Hohai University HHU
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Abstract

The invention discloses a multiphase seepage medium triaxial stress seepage coupling test device capable of rapidly measuring the porosity. The device comprises a gas seepage system and a triaxial type testing system, wherein the gas seepage system comprises a gas storage cylinder which is provided with a gas storage cylinder control valve; an outlet of the gas storage cylinder control valve is divided into an upstream gas pipeline and a downstream gas pipeline; the upstream gas pipeline is provided with an upstream gas pressure gauge and an upstream gas inlet valve; the downstream gas pipeline is provided with an exhaust valve; the upstream gas pipeline is communicated with the downstream gas pipeline in a converging way; the triaxial type testing system comprises a triaxial pressure chamber; the triaxial pressure chamber is connected on the upstream gas pipeline between the exhaust valve and the upstream gas inlet valve in parallel by a pipeline, and is respectively communicated the upstream gas pipeline and the downstream gas pipeline. After the multiphase seepage medium triaxial stress seepage coupling test device is used, the porosities of rocks with different lithological characters can be rapidly measured, and the rock permeability can be measured by a steady-state method and a pulse method by applying multiple seepage mediums such as water, gas and the like; the test device is high in accuracy and has the permeability measurement accuracy reaching up to 10-24m<2>.

Description

A kind of multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity
Technical field
The present invention relates to the test unit under a kind of stress seepage flow condition of complexity, relating in particular to one can Quick Measurement porosity, and realizes the stress seepage coupling test device of multiphase porous flow medium.
Background technology
Along with the development of national economy, demand for the energy is increasing, energy problem has risen to national strategy aspect, the exploitation of subterranean resource at present has been not limited to the traditional energies such as oil, the exploitation of the new forms of energy such as shale gas is also progressively being carried out, but the process of resource exploitation must be faced the stability problem of engineering under complex stress and seepage flow condition, simultaneously in the current numerous Hydraulic and Hydro-Power Engineerings of Zhe Yeshi China institute must in the face of and the problem of solution.And this seepage flow is not single-phase liquid seepage flow or single-phase gas flow, more gas flow and the simultaneous complex situations of liquid seepage flow, simultaneously because rock has changeable feature and lithology, its permeability has very large difference, part rock is due to the characteristic of hyposmosis, liquid is difficult to infiltration in the past, must suitable gas could measure its permeability as permeating medium.
Stress seepage coupling test device at present, the single phase fluid flow media that use more, and in existing multiphase porous flow pressure stress seepage coupling test device, there is no independent porosity measurement system, porosity needs to measure in addition or Measuring Time is long, low precision, the precision of simultaneously measuring tight rock permeability is inadequate, is difficult to meet the test request of tight rock.
Therefore, need a kind of test complex that can Quick Measurement porosity can carry out again the coupling of multiphase porous flow pressure stress seepage flow to address the above problem.
Summary of the invention
Goal of the invention: the present invention is directed to the problem that existing stress seepage coupling test device exists, a kind of multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity is provided.
Technical scheme: for solving the problems of the technologies described above, the following technical scheme of employing of the present invention:
Multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity, comprises gas seepage system and triple axle pilot system;
Gas seepage system comprises gas bomb, and gas bomb is provided with gas bomb by-pass valve control, and the outlet of gas bomb by-pass valve control branches into upstream gas pipeline and gas downstream pipeline;
Upstream gas pipeline is provided with upstream gas pressure gauge, upstream air intake valve; Gas downstream pipeline is provided with drain tap; Upstream gas pipeline and gas downstream pipeline converge connection;
Triple axle pilot system comprises triaxial cell, triaxial cell by pipeline and be connected in drain tap and upstream air intake valve between upstream gas pipeline on, and respectively with upstream gas pipeline, gas downstream pipeline connection.
Further, triple axle pilot system also comprises axial compression pump, axial compression pipeline, confined pressure pump and confined pressure pipeline, periphery, triaxial cell comprises axial compression chamber and confined pressure chamber, axial compression chamber is communicated with axial compression pump by axial compression pipeline, confined pressure chamber is communicated with confined pressure pump by confined pressure pipeline, axial compression pipeline is provided with axial compression meter and axial compression valve, and confined pressure pipeline is provided with confined pressure meter and confined pressure valve.
In order to make device be controlled better, ensure the accuracy of test, from gas bomb, on upstream gas pipeline, be provided with successively upstream gas bottle valve, upstream gas pressure gauge, upstream air intake valve; From gas bomb, on gas downstream pipeline, be provided with successively downstream gas cylinder valve, drain tap, gas downstream pressure gauge and downstream air intake valve; Triaxial cell by pipeline and be connected in downstream air intake valve and upstream air intake valve between upstream gas pipeline on, and with upstream gas pipeline and gas downstream pipeline connection.
For the further accuracy of control survey of energy, on the upstream gas pipeline between downstream air intake valve and upstream air intake valve, be provided with successively the first valve, pressure gauge and the second valve.
In order to further facilitate test, ensure test accuracy, between the upstream gas pressure gauge on upstream gas pipeline and upstream air intake valve, be provided with the upstream gas cylinder with upstream gas pipeline connection; Between gas downstream pressure gauge on gas downstream pipeline and downstream air intake valve, be provided with the downstream gas cylinder with gas downstream pipeline connection.
Above-mentioned multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity, also comprise liquid osmotic system, liquid osmotic system comprises liquor pump, reservoir, upstream liquid pipeline and downstream liquid pipeline, and liquor pump is communicated with triple axle pilot system by upstream liquid pipeline; Reservoir is communicated with triple axle pilot system by downstream liquid pipeline; Pump up from liquid, on upstream liquid pipeline, be provided with successively liquid control valve door, upstream liquid pressure gauge and upstream liquid flowing valve; From reservoir, on downstream liquid pipeline, be provided with successively draining valve, downstream liquid pressure gauge and downstream fluid valve.Can have more and need to select liquid percolating medium like this.
Liquid osmotic system also comprises liquid storage pipeline, upstream liquid case and downstream liquid case; Liquid storage pipeline one end and upstream liquid pipeline connection, connectivity part are between upstream liquid pressure gauge and upstream liquid flowing valve, and the liquid storage pipeline other end and downstream liquid pipeline connection, connectivity part are between downstream liquid pressure gauge and downstream fluid valve; From upstream liquid pipeline, on liquid storage pipeline, be provided with successively upstream Cistern valve, water tank connection valve and downstream Cistern valve; Upstream liquid case and liquid storage pipeline connection, connectivity part also connects between valve at upstream Cistern valve and water tank; Downstream liquid case and liquid storage pipeline connection, connectivity part also connects between valve and downstream Cistern valve at water tank.
Gas downstream pressure gauge, upstream gas pressure gauge and manometric precision reach 10 -4mPa, permeability survey precision reaches 10 -24m 2.Can further ensure like this accuracy of test.
The gases used high purity argon that is preferably in gas bomb.
In said apparatus, each pipeline material is preferably high-strength alloy material.
Beneficial effect: the invention provides a kind of multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity, can change procedure and the rule of study of rocks material under the coupling of the multiple percolating medium stress such as water, gas seepage flow, can realize the several different methods such as steady state method and impulse method and measure the permeability of rock material, and can realize the Quick Measurement of rock material porosity, there is feature richness, precision is accurate, reliable results, the advantage of raising test efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity of the present invention;
Fig. 2 is porosity measurement system;
Fig. 3 is gas seepage system;
Fig. 4 is liquid osmotic system;
In figure, gas bomb 1, reservoir 2, liquor pump 3, downstream liquid case 4, upstream liquid case 5, upstream gas cylinder 6, downstream gas cylinder 7, axial compression pump 8, axial compression chamber 9, confined pressure pump 10, confined pressure chamber 11, rubber sleeve 12, axial compression strainometer 13, hoop strain meter 14, data acquisition-and-recording system 15, gas bomb by-pass valve control 16, downstream gas cylinder valve 17, upstream gas bottle valve 18, draining valve 19, liquid control valve door 20, drain tap 21, downstream air intake valve 22, downstream Cistern valve 23, downstream fluid valve 24, water tank connects valve 25, upstream Cistern valve 26, upstream liquid flowing valve 27, upstream air intake valve 28, the second valve 29, the first valve 30, axial compression valve 31, confined pressure valve 32, gas downstream pressure gauge 33, downstream liquid pressure gauge 34, upstream liquid pressure gauge 35, upstream gas pressure gauge 36, pressure gauge 37, axial compression meter 38, confined pressure meter 39.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.
As Figure 1-4 can Quick Measurement porosity multiphase porous flow medium triaxial stress seepage coupling test device, comprise gas seepage system and triple axle pilot system;
Gas seepage system comprises gas bomb 1, and gas bomb 1 is provided with gas bomb by-pass valve control 16, and the outlet of gas bomb by-pass valve control 16 branches into upstream gas pipeline and gas downstream pipeline;
Upstream gas pipeline is provided with upstream gas pressure gauge 36, upstream air intake valve 28; Gas downstream pipeline is provided with drain tap 21; Upstream gas pipeline and gas downstream pipeline converge connection;
Triple axle pilot system comprises triaxial cell, and triaxial cell comprises rubber sleeve 12, axial strain meter 13, hoop strain meter 14, data acquisition-and-recording system 15; Data acquisition-and-recording system 15 coupling shafts form data handling system to strainometer 13, hoop strain meter 14; Triaxial cell by pipeline and be connected in drain tap 21 and upstream air intake valve 28 between upstream gas pipeline on, and respectively with upstream gas pipeline, gas downstream pipeline connection.
Above-mentioned triaxial cell, is contained in rock sample in rubber sleeve 12, and hoop strain meter 14 is wrapped in outside rubber sleeve 12, records the hoop strain of rock sample in process of the test, and axial strain meter 13 is parallel with rubber sleeve 12, the axial strain of rock sample after record pressurization.
Triple axle pilot system also comprises axial compression pump 8, axial compression pipeline, confined pressure pump 10 and confined pressure pipeline, periphery, triaxial cell comprises axial compression chamber 9 and confined pressure chamber 11, axial compression chamber 9 is communicated with axial compression pump 8 by axial compression pipeline, confined pressure chamber 11 is communicated with confined pressure pump 10 by confined pressure pipeline, axial compression pipeline is provided with axial compression meter 38 and axial compression valve 31, and confined pressure pipeline is provided with confined pressure meter 39 and confined pressure valve 32.
From gas bomb 1, on upstream gas pipeline, be provided with successively upstream gas bottle valve 18, upstream gas pressure gauge 36, upstream air intake valve 28; From gas bomb 1, on gas downstream pipeline, be provided with successively downstream gas cylinder valve 17, drain tap 21, gas downstream pressure gauge 33 and downstream air intake valve 22; Triaxial cell by pipeline and be connected in downstream air intake valve 22 and upstream air intake valve 28 between upstream gas pipeline on, and with upstream gas pipeline and gas downstream pipeline connection.
On upstream gas pipeline between downstream air intake valve 22 and upstream air intake valve 28, be provided with successively the first valve 30, pressure gauge 37 and the second valve 29.
Between upstream gas pressure gauge 36 on upstream gas pipeline and upstream air intake valve 28, be provided with the upstream gas cylinder 6 with upstream gas pipeline connection; Between gas downstream pressure gauge 33 on gas downstream pipeline and downstream air intake valve 22, be provided with the downstream gas cylinder 7 with gas downstream pipeline connection.
Above-mentioned multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity, also comprise liquid osmotic system, liquid osmotic system comprises liquor pump, reservoir, upstream liquid pipeline and downstream liquid pipeline, and liquor pump is communicated with triple axle pilot system by upstream liquid pipeline; Reservoir is communicated with triple axle pilot system by downstream liquid pipeline; Pump up from liquid, on upstream liquid pipeline, be provided with successively liquid control valve door 20, upstream liquid pressure gauge 35 and upstream liquid flowing valve 27; From reservoir, on downstream liquid pipeline, be provided with successively draining valve 19, downstream liquid pressure gauge 34 and downstream fluid valve 24.
Liquid osmotic system also comprises liquid storage pipeline, upstream liquid case and downstream liquid case; Liquid storage pipeline one end and upstream liquid pipeline connection, connectivity part are between upstream liquid pressure gauge 35 and upstream liquid flowing valve 27, and the liquid storage pipeline other end and downstream liquid pipeline connection, connectivity part are between downstream liquid pressure gauge 34 and downstream fluid valve 24; From upstream liquid pipeline, on liquid storage pipeline, be provided with successively upstream Cistern valve 26, water tank connection valve 25 and downstream Cistern valve 23; Upstream liquid case and liquid storage pipeline connection, connectivity part also connects between valve 25 at upstream Cistern valve 26 and water tank; Downstream liquid case and liquid storage pipeline connection, connectivity part also connects between valve 25 and downstream Cistern valve 23 at water tank.
Above-mentioned gas bomb 1, upstream gas cylinder 6, upstream gas pressure gauge 36, pressure gauge 37, the first valve 30, pressure gauge 37 and the second valve 29, gas bomb by-pass valve control 16, upstream gas bottle valve 18 form porosity measurement system.
Above-mentioned triaxial cell, is arranged with axial strain meter 13 and hoop strain meter 14 outward, and data acquisition-and-recording system 15 coupling shafts are to strainometer 13, hoop strain meter 14 and each pressure gauge composition data handling system.
Above-mentioned each manometric precision reaches 10 -4mPa, permeability survey precision reaches 10 -24m 2.
Gas bomb 1 interior gases used be high purity argon.
As shown in Figure 1, the method for Quick Measurement porosity is as follows:
1), connect test unit according to graphic technique, and close all valves;
2), be the accuracy of warranty test, first instrument is proofreaied and correct, air-locked metal-like is put into triaxial test system.
3), adding confined pressure closes confined pressure valve to predetermined value and makes it be stabilized in fixed value, open upstream gas bottle valve 18, upstream air intake valve 28, the second valve 29, the first valve 30, drain tap 21 all pipelines are connected with external atmosphere pressure, by clean the gas discharging of instrument internal.It is 0 that high-precision pressure 37 is shown displayed value.
4), valve-off upstream air intake valve 28, the second valve 29, the first valve 30, drain tap 21, open gas bomb by-pass valve control 16 and upstream gas bottle valve 18, gas is entered.Because of barometric limit of range and security consideration, the reading of upstream gas pressure gauge 36 is controlled at 1MPa left and right.
5), now close gas bomb by-pass valve control 16 and upstream gas bottle valve 18, stablize data and count through making upstream gas pressure gauge 36 stable reading after a while and recording
6), open valve downstream air intake valve 28, the second valve 29, the first valve 30, gas is spread in pipeline.Through making rain glass stable reading and record reading after a while
7), calculate conduit volume V in system 2.
8), pack the rock sample after drying into triaxial test system;
9), open gas bomb by-pass valve control 16, upstream air intake valve 18, gases at high pressure are injected after upstream gas cylinder 6, close gas bomb by-pass valve control 16, upstream gas bottle valve 18;
10), record the reading P of upstream gas pressure gauge 36 1;
11), open upstream air intake valve 28, the second valve 29, the first valve 30, make high purity argon fully enter rock sample;
12), record the number of degrees P of high precision barometer 37 2;
13), the volume V of upstream gas cylinder 6 1,, conduit volume V in porosity measurement system 2, known, the volume V in space in rock sample 3can try to achieve by Boyle's law P 1* V 1=P 2* (V 1+ V 2+ V 3),
14), the porosity of rock sample equals V 3/ V, the standard volume that V is rock sample;
15), measure complete.
Steady state method:
1), connect test unit according to graphic technique, and close all valves;
2), pack the rock sample after drying into triaxial test system;
3), open confined pressure by-pass valve control 32, confined pressure pump 10 adds axial compression to setting value to confined pressure chamber 11, closes confined pressure pump 10, opens axial compression by-pass valve control 31, axial compression pump 8 adds axial compression to setting value to axial compression chamber 9, closing axle press pump 8.
4), select percolating medium, as make water as percolating medium, open water discharging valve 19, liquor pump by-pass valve control 20, upstream inlet valve 27, downstream flowing water Valve 24, apply constant pressure in upstream, after upstream pressure 35, downstream liquid pressure gauge 34 are stablized, gather by the flow of sample.As use argon gas for percolating medium, and open give vent to anger valve 22 and drain tap 21 of gas bomb by-pass valve control 16, upstream gas bottle valve 18, upstream air intake valve 28, downstream and apply constant pressure in upstream, gather the sample flow passing through.
5), calculate permeability according to Darcy's law
6)、 k = 2 &mu;LV&Delta; P 1 A ( P m 2 - P 0 2 ) &Delta;t
7), in formula, for the observed pressure value of upstream liquid case or upstream gas cylinder, P 1for upstream extremity original pressure, Δ P 1for upstream pressure changes, Δ t changes institute's elapsed time for forming upstream pressure, and L is specimen length, A is Area of Sample, k permeability, and V is the volume on rock sample ground, P0 is standard atmospheric pressure (0.1MPa), and μ is the viscosity (Pas) of water or argon gas.
8), therefore can calculate permeability.
Impulse method:
1), connect test unit according to graphic technique, and close all valves;
2), pack rock sample after oven dry into triaxial test system;
3), open confined pressure by-pass valve control 32, confined pressure pump 10 adds axial compression to setting value to confined pressure chamber 11, closes confined pressure pump 10, opens axial compression by-pass valve control 31, axial compression pump 8 adds axial compression to setting value to axial compression chamber 9, closing axle press pump 8.
4), select percolating medium, as make water as percolating medium, play liquor pump control and open valve 20, downstream flowing water Valve 24, fluid box connection valve 25, upstream liquid case valve 26, upstream inlet valve 27, use upstream injected water in fluid box 5, downstream liquid case 4 of liquor pump 3, the force value of gas downstream pressure gauge 34, upstream liquid pressure gauge 35 is equated, and equaling setting value, closing liquid case connects valve 25; As use argon gas for percolating medium, open gas bomb by-pass valve control 16, downstream air intake valve 17, upstream gas bottle valve 18, downstream give vent to anger valve 22, upstream air intake valve 28, use gas bomb 1 upstream in gas cylinder 6, downstream gas cylinder 7, to inject argon gas, the force value of high-grade pressure gauge 33, high-grade pressure gauge 36 is equated, and equal setting value, valve-off 17.
5), according to step 4) in selected percolating medium, use liquor pump 2 upstream fluid box 5 add water to upstream liquid case 5 pressure and equal setting value, or use gas bomb 1 upstream gas cylinder 6 add argon gas to the pressure of upstream gas bottle 6 and equal setting value, make upstream and downstream mineralization pressure poor.
6), Usage data collection and register system record the value of downstream liquid manometer 34, upstream liquid pressure gauge 35, gas downstream pressure gauge 33, upstream gas pressure gauge 36, and calculate upstream liquid case 5 with the pressure differential of downstream liquid case 4 or upstream gas cylinder 6 pressure differential with downstream gas cylinder 7.
7), utilize the permeability of sample in test figure experiment with computing process.
8), calculate permeability according to Darcy's law
9)、ΔP(t)=P U-P d
10)、ΔP(t)=ΔP*exp(-αt)
11)、 k = &alpha;&mu; LV u V d AP f ( V u + V d )
12), P in formula ufor the observed pressure value of upstream liquid case or upstream gas cylinder, α is attenuation coefficient, P dfor the observed pressure value of downstream liquid case or downstream gas cylinder, Δ P (t) is upstream and downstream pressure differential, and t is for forming upstream and downstream pressure differential institute elapsed time, and μ is the coefficient of viscosity of water or argon gas, and L is specimen length, and A is Area of Sample, and k is permeability, V ufor the capacity of upstream liquid case or upstream gas cylinder, V dfor the capacity of upstream liquid case or upstream gas cylinder, P ffor the pressure after system balancing.
13), therefore can calculate permeability.

Claims (9)

1. a multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity, is characterized in that: comprise gas seepage system and triple axle pilot system;
Gas seepage system comprises gas bomb (1), and gas bomb (1) is provided with gas bomb by-pass valve control (16), and the outlet of gas bomb by-pass valve control (16) branches into upstream gas pipeline and gas downstream pipeline;
Upstream gas pipeline is provided with upstream gas pressure gauge (36), upstream air intake valve (28); Gas downstream pipeline is provided with drain tap (21); Upstream gas pipeline and gas downstream pipeline converge connection;
Triple axle pilot system comprises triaxial cell, triaxial cell by pipeline and be connected in drain tap (21) and upstream air intake valve (28) between upstream gas pipeline on, and respectively with upstream gas pipeline, gas downstream pipeline connection.
2. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 1, it is characterized in that: triple axle pilot system also comprises axial compression pump (8), axial compression pipeline, confined pressure pump and confined pressure pipeline, periphery, triaxial cell comprises axial compression chamber (9) and confined pressure chamber (11), axial compression chamber (9) is communicated with axial compression pump (8) by axial compression pipeline, confined pressure chamber (11) is communicated with confined pressure pump (10) by confined pressure pipeline, axial compression pipeline is provided with axial compression meter (38) and axial compression valve (31), confined pressure pipeline is provided with confined pressure meter (39) and confined pressure valve (32).
3. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 2, it is characterized in that: from gas bomb (1), on upstream gas pipeline, be provided with successively upstream gas bottle valve (18), upstream gas pressure gauge (36), upstream air intake valve (28); From gas bomb (1), on gas downstream pipeline, be provided with successively downstream gas cylinder valve (17), drain tap (21), gas downstream pressure gauge (33) and downstream air intake valve (22); Triaxial cell by pipeline and be connected in downstream air intake valve (22) and upstream air intake valve (28) between upstream gas pipeline on, and with upstream gas pipeline and gas downstream pipeline connection.
4. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 3, is characterized in that: on the upstream gas pipeline between downstream air intake valve (22) and upstream air intake valve (28), be provided with successively the first valve (30), pressure gauge (37) and the second valve (29).
As described in claim 3 or 4 can Quick Measurement porosity multiphase porous flow medium triaxial stress seepage coupling test device, it is characterized in that: between the upstream gas pressure gauge (36) on upstream gas pipeline and upstream air intake valve (28), be provided with the upstream gas cylinder (6) with upstream gas pipeline connection; Between gas downstream pressure gauge (33) on gas downstream pipeline and downstream air intake valve (22), be provided with the downstream gas cylinder (7) with gas downstream pipeline connection.
6. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 2, it is characterized in that: also comprise liquid osmotic system, liquid osmotic system comprises liquor pump (3), reservoir (2), upstream liquid pipeline and downstream liquid pipeline, and liquor pump (3) is communicated with triple axle pilot system by upstream liquid pipeline; Reservoir (2) is communicated with triple axle pilot system by downstream liquid pipeline; From liquor pump (3), on upstream liquid pipeline, be provided with successively liquid control valve door (20), upstream liquid pressure gauge (35) and upstream liquid flowing valve (27) (27); From reservoir (2), on downstream liquid pipeline, be provided with successively draining valve (19), downstream liquid pressure gauge (34) (34) and downstream fluid valve (24).
7. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 6, is characterized in that: liquid osmotic system also comprises liquid storage pipeline, upstream liquid case (5) and downstream liquid case (4); Liquid storage pipeline one end and upstream liquid pipeline connection, connectivity part are positioned between upstream liquid pressure gauge (35) and upstream liquid flowing valve (27), and the liquid storage pipeline other end and downstream liquid pipeline connection, connectivity part are positioned between downstream liquid pressure gauge (34) (34) and downstream fluid valve (24); From upstream liquid pipeline, on liquid storage pipeline, be provided with successively upstream Cistern valve (26), water tank connection valve (25) and downstream Cistern valve (23); Upstream liquid case (5) and liquid storage pipeline connection, connectivity part and be positioned at upstream Cistern valve (26) and water tank connection valve (25) between; Downstream liquid case (4) and liquid storage pipeline connection, connectivity part is also positioned between water tank connection valve (25) and downstream Cistern valve (23).
8. multiphase porous flow medium triaxial stress seepage coupling test device that can Quick Measurement porosity as claimed in claim 5, is characterized in that: the precision of gas downstream pressure gauge (33), upstream gas pressure gauge (36) and pressure gauge (37) reaches 10 -4mPa, permeability survey precision reaches 10 -24m 2.
As described in claim 1-4 any one can Quick Measurement porosity multiphase porous flow medium triaxial stress seepage coupling test device, it is characterized in that: gases used in gas bomb (1) is high purity argon.
CN201410259243.7A 2014-06-11 2014-06-11 A kind of can the heterogeneous percolating medium triaxial stress seepage flow coupling test device of Quick Measurement porosity Expired - Fee Related CN104034644B (en)

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