CN103558137B - A kind of device measuring porous medium air water two-phase relative permeability - Google Patents
A kind of device measuring porous medium air water two-phase relative permeability Download PDFInfo
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- CN103558137B CN103558137B CN201310590785.8A CN201310590785A CN103558137B CN 103558137 B CN103558137 B CN 103558137B CN 201310590785 A CN201310590785 A CN 201310590785A CN 103558137 B CN103558137 B CN 103558137B
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Abstract
The invention discloses a kind of device measuring porous medium air water two-phase relative permeability, fluid source subsystem to be injected with fluid by stainless-steel tube and is connected with the filtrator in control subsystem, fluid injects and is connected with the cushion block that control subsystem is clamped in subsystem by stainless-steel tube and core, cushion block in core clamping subsystem is connected with the gas and water separator in gas-water separation subsystem by hydrophobic inner liner stainless steel pipe, gas and water separator in gas-water separation subsystem to be injected with fluid by stainless-steel tube and is connected with the threeway in control subsystem, Water Tank with Temp.-controlled in temperature control subsystem is injected with fluid respectively by external circulating water pipe and injects volume pump temperature control cavity with the fluid of control subsystem and gas volume pump temperature control cavity is connected.This device reduces the error that water saturation is measured in rock, and principle is simple, clear in structure, accurately can measure porous medium especially as the air water two-phase relative permeability of shale, compacted rock that coal petrography isoperm is low.
Description
Technical field
The present invention relates to the technical field of measurement and test of Porous Media characteristic, particularly relate to the air water two phase fluid flow characteristic test field of the tight rock such as shale, coal petrography, more specifically relate to a kind of device measuring porous medium air water two-phase relative permeability.
Background technology
Along with the demand of human society to the energy increases day by day, not only coal, oil, these conventional gas and oil resources of rock gas are developed and are used, the unconventional gas resourcess such as coal-seam gas, shale gas, compact sandstone gas are also more and more subject to people's attention, and conduct a research one after another and develop.With coal and oil different, rock gas normally with freely or the mode of absorption be stored in the rock stratum of porous structure, except there being rock gas also to there is a large amount of moisture content simultaneously in rock stratum.In gas exploitation course, normally water is gentle is extracted simultaneously.In this process, the migration of air water is relevant with air water two-phase relative permeability separately, and the size of gas phase relative permeability is the key parameter determining natural gas extraction efficiency.Therefore, Measurement accuracy relative permeability is significant for the exploitation of natural gas source.
It is crucial that measure the water saturation in rock in the relative permeability measurement of rock (shale, coal petrography, sandstone etc.).Relative permeability is measured and is mainly contained two kinds of methods at present: steady state method and cold store enclosure.Briefly, steady state method is that simultaneously in rock, to inject water gentle, after fluid flow equilibrium in rock, according to the water saturation of water yield cheek rock injecting and flow out rock; And cold store enclosure is first by rock water saturation, backward rock in inject by water saturated gas, until fluid in rock after flow equilibrium, flowed out water saturation degree in the water yield cheek rock of rock by metering.For the rock that porosity as sandstone is larger, water saturation wherein changes larger in test process, relatively lower to the requirement of measuring accuracy; But for the rock of picture shale, these densifications of coal petrography, factor of porosity is very little, and in relative permeability test process, from rock, the displacement water yield out belongs to trace, therefore, must be higher to the accuracy requirement of measuring.Pipeline even from rock water side to flowmeter, the dead volume of equipment, moisture content that is residual or absorption all can affect test result greatly.And some the relative permeability proving installations reported at present often all do not consider these influence factors.
Therefore, the measuring accuracy of relative permeability be improved, the measuring accuracy improving water saturation must be managed, the impact that equipment itself measures moisture content must be reduced.
Summary of the invention
The object of the invention is to there are provided a kind of device measuring porous medium air water two-phase relative permeability, structure is simple, easy to operate, the arrangement increases rock especially the tight rock such as shale, coal petrography relative permeability measure in the measuring accuracy of water saturation.
In order to achieve the above object, the present invention adopts following technical scheme:
Measure a device for porous medium air water two-phase relative permeability, this device comprises fluid source subsystem, fluid injects and control subsystem, core clamp subsystem, separating system for water, data acquisition subsystem and temperature control subsystem.It is characterized in that: fluid source subsystem is injected by stainless-steel tube and fluid and is connected with the first filtrator in control subsystem, provide fluid source for fluid injects with control subsystem; Fluid injects and is connected with the first end cushion block that control subsystem is clamped in subsystem by stainless-steel tube and core, to sample beam body; The second end cushion block in core clamping subsystem is connected with the gas and water separator in gas-water separation subsystem by hydrophobic inner liner stainless steel pipe; Gas and water separator in gas-water separation subsystem is injected by stainless-steel tube and fluid and is connected with the 9th threeway in control subsystem; Fluid injects and to clamp the Water Tank with Temp.-controlled that subsystem and gas-water separation subsystem be placed on temperature control subsystem with the pipeline portions of control subsystem, core and keep constant temperature; Water Tank with Temp.-controlled in temperature control subsystem is injected with fluid respectively by external circulating water pipe and injects volume pump temperature control cavity with the fluid of control subsystem and gas volume pump temperature control cavity is connected, and convection cell injects the fluid in volume pump and the gas in gas volume pump realizes temperature control; The differential pressure gauge of fluid injects and the fluid of control subsystem injects volume pump, gas dosing pump, pressure gauge, differential pressure gauge, core clamp subsystem pressure gauge and gas-water separation subsystem is connected with the capture card in data acquisition subsystem by cable.Wherein, fluid source subsystem comprises water container, gas cylinder, reduction valve, valve, threeway; Fluid inject with control subsystem comprises stainless-steel tube, fluid injects volume pump, gas dosing pump, fluid inject volume pump temperature control cavity, gas dosing pump temperature control cavity, filtrator (totally 2), valve (totally 7), threeway (totally 9), pressure gauge (totally 2), differential pressure gauge, vacuum pump, vacuum meter; Core clamping subsystem comprises pressure chamber, confined pressure liquid, the first porous gasket, the second porous gasket, first end cushion block, the second end cushion block, the first porous gasket fluid bore, the second porous gasket fluid bore, first end cushion block fluid bore, the first-class body opening of the second end cushion block, the second end cushion block second body opening, hydrophobic inner liner stainless steel pipe, confined pressure pump, pressure gauge, threeway, valve, sample, encapsulant; Gas-water separation subsystem comprises gas and water separator, differential pressure gauge, threeway; Data acquisition subsystem comprises computing machine, USB data line, capture card, cable (totally 7); Temperature control subsystem comprises Water Tank with Temp.-controlled, external circulating water pipe.Each parts concrete structure annexation is as follows:
Fluid source subsystem: gas cylinder is connected with reduction valve, for regulating from gas cylinder gaseous tension out; Reduction valve is connected with threeway one end; Water container is connected with the threeway other end by valve; Threeway the 3rd end injects with fluid and is connected with the stainless-steel tube of control subsystem.
Fluid injects and control subsystem: the first filtrator is connected with the first valve; First valve and fluid inject volume pump and are connected; Fluid injects volume pump and is connected with the second valve; Second valve is connected with one end of the first threeway; The other two ends of the first threeway are connected with one end of the first pressure gauge and the second threeway respectively; The first end cushion block that the other end of the second threeway is clamped in subsystem by stainless-steel tube and core is connected; 3rd end of the second threeway is connected by stainless-steel tube one end with the 3rd threeway; The other end of the 3rd threeway connects the 3rd valve; 3rd end of the 3rd threeway is connected by stainless-steel tube one end with the 8th threeway; The other end of the 8th threeway is connected with differential pressure gauge; 3rd end of the 8th threeway is connected with one end of the 7th threeway; Second end of the 7th threeway is connected with one end of the 9th threeway; The other end of the 9th threeway is connected with the 3rd valve; 3rd end of the 9th threeway is connected with the gas and water separator in gas-water separation subsystem by stainless-steel tube; 3rd end of the 7th threeway is connected with one end of the 6th threeway; The other end of the 6th threeway is connected with the second pressure gauge; 3rd end of the 6th threeway is connected with the second filtrator; Second filtrator is connected with the 4th valve; 4th valve is connected with gas dosing pump; Gas dosing pump is connected with the 5th valve; 5th valve is connected with one end of the 4th threeway; The other end of the 4th threeway is connected with one end of the 5th threeway; 3rd end of the 4th threeway is connected with the 7th valve; Second end of the 5th threeway is connected with vacuum meter; 3rd end of the 5th threeway is connected with the 6th valve; 6th valve is connected with vacuum pump.
Core clamping subsystem: sample two ends respectively with empty pad contacts more than the first porous gasket and second, for give sample evenly inject fluid; First porous gasket contacts with first end cushion block with the second end cushion block respectively with more than second empty pads; First end cushion block, the first porous gasket, sample, more than second empty pads, the second end cushion block are by encapsulant environmental sealing; First end cushion block fluid bore is injected by stainless-steel tube and fluid and is connected with the second threeway of control subsystem; The first-class body opening of the second end cushion block is connected with the gas and water separator in gas-water separation subsystem by hydrophobic inner liner stainless steel pipe; Confined pressure pump is connected with threeway; Threeway second end is connected with pressure gauge; Threeway the 3rd end is connected with valve; Valve is connected with the second end cushion block second body opening, for injecting confined pressure liquid in pressure chamber by stainless-steel tube.
Gas-water separation subsystem: threeway one end is connected with differential pressure gauge; The top and bottom of threeway another two ports difference gas and water separator connect; Gas and water separator upper end is connected with hydrophobic inner liner stainless steel pipe; Gas and water separator upper end is injected by stainless-steel tube and fluid and is connected with the 9th threeway of control subsystem.
Data acquisition subsystem: capture card is connected with computing machine by USB data line.
Temperature control subsystem: external circulating water pipe is connected with Water Tank with Temp.-controlled.
Utilize the present invention carry out rock air water two-phase relative permeability measure method as follows:
1, sampler is manufactured according to the present invention.
2, get out sample to be tested, and sample to be immersed in distilled water 48 hours, make sample fully saturated.
3, first end cushion block, the first porous gasket and sample and the second porous gasket, the second end cushion block are fitly stacked together, encapsulant is enclosed within around them, together with first end cushion block, the first porous gasket and sample and the second porous gasket, the second end cushion block tightly environmental sealing.
4, first end cushion block fluid bore is injected by stainless-steel tube and fluid be connected with the second threeway of control subsystem; The first-class body opening of the second end cushion block is connected with the gas and water separator in gas-water separation subsystem by hydrophobic inner liner stainless steel pipe.
5, utilize confined pressure pump in pressure chamber, to inject confined pressure liquid by the second end cushion block second body opening, utilize confined pressure pump to the confined pressure liquid pressing in pressure chamber, until confined pressure fluid pressure reaches the required pressure (i.e. confined pressure) of experiment in pressure chamber.
6, open the valve be connected with water container, inject volume pump to fluid and pour about 10 milliliters distilled water, close the valve be connected with water container; Open reduction valve, inject the full gas of volume pump punching to fluid; The water of fluid injection volume pump and gas is allowed to reach wetting balance.
7, arranging gas dosing pump and fluid respectively, to inject volume pump be constant voltage mode, and fluid injects volume pump and injects fluid with the pressure of a little higher than gas dosing pump to sample, can carry out the relative permeability experiments of measuring of sample.
The present invention compared with prior art, has the following advantages and good effect:
1, a kind of device measuring porous medium air water two-phase relative permeability, this device is avoided by carrying out hydrophobic Lining treatment to associated pipe or reduces aqueous phase remaining in pipeline in porous medium air water two-phase relative permeability measuring process, guarantee that displacement water out all enters gas and water separator from rock sample, reduce the error that in rock, water saturation is measured; Principle is simple, clear in structure.
2, a kind of device measuring porous medium air water two-phase relative permeability, this device is accurately measured from the height of rock displacement moisture content out at gas and water separator by differential pressure gauge, be converted into the water yield, and then calculate the water saturation in rock, improve water saturation measuring accuracy.
3, apply the present invention and accurately can measure porous medium especially as the air water two-phase relative permeability of shale, compacted rock that coal petrography isoperm is low.
Accompanying drawing explanation
Fig. 1 is a kind of apparatus structure schematic diagram measuring porous medium air water two-phase relative permeability.
Wherein: 1-fluid source subsystem (comprising gas cylinder 1.1, water container 1.2, reduction valve 1.3, valve 1.4, threeway 1.5);
2-fluid injects and (comprises stainless-steel tube 2.1 with control subsystem, fluid injects volume pump 2.2a, gas dosing pump 2.2b, filtrator 2.3(comprises the first filtrator 2.3a, second filtrator 2.3b totally 2), fluid injects volume pump temperature control cavity 2.10a, gas dosing pump temperature control cavity 2.10b, valve 2.4(first valve 2.4a, second valve 2.4b, 3rd valve 2.4c, 4th valve 2.4d, 5th valve 2.4e, 6th valve 2.4f, 7th valve 2.4g totally 7), threeway 2.5(first threeway 2.5a, second threeway 2.5b, 3rd threeway 2.5c, 4th threeway 2.5d, 5th threeway 2.5e, 6th threeway 2.5f, 7th threeway 2.5g, 8th threeway 2.5h, 9th threeway 2.5i totally 9), pressure gauge 2.6(first pressure gauge 2.6a, second pressure gauge 2.6b totally 2), differential pressure gauge 2.7, vacuum pump 2.8, vacuum meter 2.9),
3-core clamping subsystem (comprises pressure chamber 3.1, confined pressure liquid 3.2, porous gasket 3.3(first porous gasket 3.3a, second porous gasket 3.3b totally 2), end cushion block 3.4(first end cushion block 3.4a, the second end cushion block 3.4b totally 2), porous gasket fluid bore 3.5(first porous gasket fluid bore 3.5a, second porous gasket fluid bore 3.5b totally 2 groups), end cushion block fluid bore 3.6(first end cushion block fluid bore 3.63a, the first-class body opening 3.6b of the second end cushion block, the second end cushion block second body opening 3.6c totally 3), hydrophobic inner liner stainless steel pipe 3.7, confined pressure pump 3.8, pressure gauge 3.9, threeway 3.10, valve 3.11, sample 3.12, encapsulant 3.13),
4-gas-water separation subsystem (comprising gas and water separator 4.1, differential pressure gauge 4.2, threeway 4.3);
5-data acquisition subsystem (comprising computing machine 5.1, USB data line 5.2, capture card 5.3, cable 5.4(first cable 5.4a, the second cable 5.4b, the 3rd cable 5.4c, the 4th cable 5.4d, the 5th cable 5.4e, the 6th cable 5.4f, the 7th cable 5.4g totally 7 articles));
6-temperature control subsystem (comprising Water Tank with Temp.-controlled 6.1, external circulating water pipe 6.2).
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Measure a device for porous medium air water two-phase relative permeability, this device comprises fluid source subsystem 1, fluid injects and control subsystem 2, core clamp subsystem 3, separating system for water 4, data acquisition subsystem 5 and temperature control subsystem 6.It is characterized in that: fluid source subsystem 1 is injected with fluid by stainless-steel tube 2.1 and is connected with the first filtrator 2.3a in control subsystem 2, provides fluid source for fluid injects with control subsystem 2; Fluid injects and is connected with the first end cushion block 3.4a that control subsystem 2 is clamped in subsystem 3 by stainless-steel tube 2.1 and core, to sample 3.12 beam body; The second end cushion block 3.4b in core clamping subsystem 3 is connected with the gas and water separator 4.1 in gas-water separation subsystem 4 by hydrophobic inner liner stainless steel pipe 3.7; Gas and water separator 4.1 in gas-water separation subsystem 4 is injected with fluid by stainless-steel tube 2.1 and is connected with the 9th threeway 2.5i in control subsystem 2; Fluid injects and to clamp the Water Tank with Temp.-controlled 6.1 that subsystem 3 and gas-water separation subsystem 4 be placed on temperature control subsystem 6 with the pipeline portions of control subsystem 2, core and keep constant temperature; Water Tank with Temp.-controlled 6.1 in temperature control subsystem 6 is injected with fluid respectively by external circulating water pipe 6.2 and injects volume pump temperature control cavity 2.10a with the fluid of control subsystem 2 and gas volume pump temperature control cavity 2.10b is connected, and convection cell injects the fluid in volume pump 2.2a and the gas in gas volume pump 2.2b realizes temperature control; Fluid injects and injects volume pump 2.2a, gas dosing pump 2.2b, pressure gauge 2.6, differential pressure gauge 2.7 with the fluid of control subsystem 2, core clamps the pressure gauge 3.9 of subsystem 3 and the differential pressure gauge 4.2 of gas-water separation subsystem 4 is connected with the capture card 5.3 in data acquisition subsystem 5 by cable 5.4.
Wherein, fluid source subsystem 1 comprises gas cylinder 1.1, water container 1.2, reduction valve 1.3, valve 1.4, threeway 1.5; Its annexation is: gas cylinder 1.1 is connected with reduction valve 1.3, for regulating from gas cylinder 1.1 gaseous tension out; Reduction valve 1.3 is connected with threeway 1.5 one end; Water container 1.2 is connected with threeway 1.5 other end by valve 1.4; Threeway 1.5 the 3rd end injects with fluid and is connected with the stainless-steel tube 2.1 of control subsystem 2.
Fluid injects and comprises stainless-steel tube 2.1 with control subsystem 2, fluid injects volume pump 2.2a, gas dosing pump 2.2b, first filtrator 2.3a, second filtrator 2.3b, fluid injects volume pump temperature control cavity 2.10a, gas dosing pump temperature control cavity 2.10b, first valve 2.4a, second valve 2.4b, 3rd valve 2.4c, 4th valve 2.4d, 5th valve 2.4e, 6th valve 2.4f, 7th valve 2.4g, first threeway 2.5a, second threeway 2.5b, 3rd threeway 2.5c, 4th threeway 2.5d, 5th threeway 2.5e, 6th threeway 2.5f, 7th threeway 2.5g, 8th threeway 2.5h, 9th threeway 2.5i, first pressure gauge 2.6a, second pressure gauge 2.6b, differential pressure gauge 2.7, vacuum pump 2.8, vacuum meter 2.9, its annexation is: the first filtrator 2.3a is connected with the first valve 2.4a, first valve 2.4a and fluid inject volume pump 2.2a and are connected, fluid injects volume pump 2.2a and is connected with the second valve 2.4b, second valve 2.4b is connected with one end of the first threeway 2.5a, the other two ends of the first threeway 2.5a are connected with one end of the first pressure gauge 2.6a and the second threeway 2.5b respectively, the other end of the second threeway 2.5b is connected with the first end cushion block 3.4a that core clamps in subsystem 3 by stainless-steel tube 2.1, 3rd end of the second threeway 2.5b is connected with one end of the 3rd threeway 2.5c by stainless-steel tube 2.1, the other end of the 3rd threeway 2.5c connects the 3rd valve 2.4c, 3rd end of the 3rd threeway 2.5c is connected with one end of the 8th threeway 2.5h by stainless-steel tube 2.1, the other end of the 8th threeway 2.5h is connected with differential pressure gauge 2.7, 3rd end of the 8th threeway 2.5h is connected with one end of the 7th threeway 2.5g, second end of the 7th threeway 2.5g is connected with one end of the 9th threeway 2.5i, the other end of the 9th threeway 2.5i is connected with the 3rd valve 2.4c, 3rd end of the 9th threeway 2.5i is connected with the gas and water separator 4.1 in gas-water separation subsystem 4 by stainless-steel tube 2.1, 3rd end of the 7th threeway 2.5g is connected with one end of the 6th threeway 2.5f, the other end of the 6th threeway 2.5f is connected with the second pressure gauge 2.6b, 3rd end of the 6th threeway 2.5f is connected with the second filtrator 2.3b, second filtrator 2.3b is connected with the 4th valve 2.4d, 4th valve 2.4d is connected with gas dosing pump 2.2b, gas dosing pump 2.2b is connected with the 5th valve 2.4e, 5th valve 2.4e is connected with one end of the 4th threeway 2.5d, the other end of the 4th threeway 2.5d is connected with one end of the 5th threeway 2.5e, 3rd end of the 4th threeway 2.5d is connected with the 7th valve 2.4g, second end of the 5th threeway 2.5e is connected with vacuum meter 2.9, 3rd end of the 5th threeway 2.5e is connected with the 6th valve 2.4f, 6th valve 2.4f is connected with vacuum pump 2.8.
Core clamping subsystem 3 comprises pressure chamber 3.1, confined pressure liquid 3.2, first porous gasket 3.3a, second porous gasket 3.3b, first end cushion block 3.4a, the second end cushion block 3.4b, first porous gasket fluid bore 3.5a, second porous gasket fluid bore 3.5b, first end cushion block fluid bore 3.63a, the first-class body opening 3.6b of the second end cushion block, 3rd end cushion block second body opening 3.6c, hydrophobic inner liner stainless steel pipe 3.7, confined pressure pump 3.8, pressure gauge 3.9, threeway 3.10, valve 3.11, sample 3.12, encapsulant 3.13, its annexation is: sample 3.12 two ends contact with the second porous gasket 3.3b with the first porous gasket 3.3a respectively, evenly injects fluid for giving sample 3.12, first porous gasket 3.3a contacts with first end cushion block 3.4a with the second end cushion block 3.4b respectively with the pad of emptying aperture more than second 3.3b, first end cushion block 3.4a, the first porous gasket 3.3a, sample 3.12, second porous gasket 3.3b, the second end cushion block 3.4b are by encapsulant 3.13 environmental sealing, first end cushion block fluid bore 3.6a is injected with fluid by stainless-steel tube 2.1 and is connected with the second threeway 2.5b of control subsystem 2, the second end cushion block first-class body opening 3.6b is connected with the gas and water separator 4.1 in gas-water separation subsystem 4 by hydrophobic inner liner stainless steel pipe 3.7, confined pressure pump 3.8 is connected with threeway 3.10, threeway 3.10 second end is connected with pressure gauge 3.9, threeway 3.10 the 3rd end is connected with valve 3.11, valve 3.11 is connected with the second end cushion block second body opening 3.6c, for injecting confined pressure liquid 3.2 in pressure chamber 3.1 by stainless-steel tube 2.1, upper end, pressure chamber 3.1 is injected with fluid by stainless-steel tube 2.1 and is connected with the threeway 2.5b of control subsystem 2, lower end, pressure chamber 3.1 is connected with the gas and water separator 4.1 in gas-water separation subsystem 4 by hydrophobic inner liner stainless steel pipe 3.7.
Gas-water separation subsystem 4 comprises gas and water separator 4.1, differential pressure gauge 4.2, threeway 4.3; Data acquisition subsystem comprises computing machine 5.1, USB data line 5.2, capture card 5.3, first cable 5.4a, the second cable 5.4b, the 3rd cable 5.4c, the 4th cable 5.4d, the 5th cable 5.4e, the 6th cable 5.4f, the 7th cable 5.4g; Temperature control subsystem 6 comprises Water Tank with Temp.-controlled 6.1, external circulating water pipe 6.2.Each parts concrete structure annexation is as follows:
Gas-water separation subsystem 4: threeway 4.3 one end is connected with differential pressure gauge 4.2; The top and bottom of threeway 4.3 another two ports difference gas and water separator 4.1 connect; Gas and water separator 4.1 upper end is connected with hydrophobic inner liner stainless steel pipe 3.7; Gas and water separator 4.1 upper end is injected with fluid by stainless-steel tube 2.1 and is connected with the 9th threeway 2.5i of control subsystem 2.
Data acquisition subsystem 5: capture card 5.3 is connected with computing machine 5.1 by USB data line 5.2.
Temperature control subsystem 6: external circulating water pipe 6.2 is connected with Water Tank with Temp.-controlled 6.1.
The face that the second described porous gasket 3.3b contacts with sample 3.12, the second porous gasket fluid bore 3.5b inwall, the second end cushion block first-class body opening 3.6b inwall, hydrophobic internal lining pipe stainless-steel tube 3.7 inwall are hydrophobic coating (being generally silication coating) surface.
Described pressure chamber 3.1, the hydrophobic internal lining pipe stainless-steel tube 3.7 connecting core clamping subsystem 3 and gas-water separation subsystem 4, gas and water separator 4.1 all keep vertical placement.
Utilize the present invention carry out rock air water two-phase relative permeability measure method as follows:
1, sampler is manufactured according to the present invention.
2, get out sample to be tested 3.12, and sample 3.12 to be immersed in distilled water 48 hours, make sample 3.12 fully saturated.
3, first end cushion block 3.4a, the first porous gasket 3.3a and sample 3.12 and the second porous gasket 3.3b, the second end cushion block 3.4b are fitly stacked together, encapsulant 3.13 is enclosed within around them, together with first end cushion block 3.4a, the first porous gasket 3.3a and sample 3.12 and the second porous gasket 3.3b, the second end cushion block 3.4b tightly environmental sealing.
4, first end cushion block fluid bore 3.6a to be injected with fluid by stainless-steel tube 2.1 be connected 2.5b with the second threeway of control subsystem 2; The second end cushion block first-class body opening 3.6b is connected with the gas and water separator 4.1 in gas-water separation subsystem 4 by hydrophobic inner liner stainless steel pipe 3.7.
5, confined pressure pump 3.8 is utilized in pressure chamber 3.1, to inject confined pressure liquid 3.2 by the second end cushion block second body opening 3.6c, confined pressure pump 3.8 is utilized to pressurize to the confined pressure liquid 3.2 in pressure chamber 3.1, until confined pressure liquid 3.2 pressure reaches the required pressure (i.e. confined pressure) of experiment in pressure chamber 3.1.
6, open the valve 1.4 be connected with water container 1.2, inject volume pump 2.2a to fluid and pour about 10 milliliters distilled water, close the valve 1.4 be connected with water container 1.2; Open reduction valve 1.3, inject the full gas of volume pump 2.2a punching to fluid; The water of fluid injection volume pump 2.2a and gas is allowed to reach wetting balance.
7, arranging gas dosing pump 2.2b and fluid respectively, to inject volume pump 2.2a be constant voltage mode, and fluid injects volume pump 2.2a and injects fluid with the pressure of a little higher than gas dosing pump 2.2b to sample 3.12, can carry out the relative permeability experiments of measuring of sample 3.12.
Claims (3)
1. measure the device of porous medium air water two-phase relative permeability for one kind, this device comprises fluid source subsystem (1), fluid injects and control subsystem (2), core clamping subsystem (3), separating system for water (4), data acquisition subsystem (5) and temperature control subsystem (6), it is characterized in that: fluid source subsystem (1) is injected by stainless-steel tube (2.1) and fluid and is connected with the first filtrator (2.3a) in control subsystem (2), fluid injects and is connected with the first end cushion block (3.4a) that control subsystem (2) is clamped in subsystem (3) by stainless-steel tube (2.1) and core, the second end cushion block (3.4b) in core clamping subsystem (3) is connected with the gas and water separator (4.1) in gas-water separation subsystem (4) by hydrophobic inner liner stainless steel pipe (3.7), gas and water separator (4.1) in gas-water separation subsystem (4) is injected by stainless-steel tube (2.1) and fluid and is connected with the 9th threeway (2.5i) in control subsystem (2), Water Tank with Temp.-controlled (6.1) in temperature control subsystem (6) is injected with fluid respectively by external circulating water pipe (6.2) and injects volume pump temperature control cavity (2.10a) with the fluid of control subsystem (2) and gas volume pump temperature control cavity (2.10b) is connected, fluid injects and injects volume pump (2.2a) with the fluid of control subsystem (2), gas dosing pump (2.2b), pressure gauge (2.6), differential pressure gauge (2.7), pressure gauge (3.9) in core clamping subsystem (3) and the differential pressure gauge (4.2) in gas-water separation subsystem (4) are connected with the capture card (5.3) in data acquisition subsystem (5) by cable (5.4),
Fluid injects and comprises stainless-steel tube (2.1) with control subsystem (2), fluid injects volume pump (2.2a), gas dosing pump (2.2b), filtrator (2.3), fluid injects volume pump temperature control cavity (2.10a), gas dosing pump temperature control cavity (2.10b), valve (2.4), threeway (2.5), pressure gauge (2.6), differential pressure gauge (2.7), vacuum pump (2.8), vacuum meter (2.9), first filtrator (2.3a) is connected with the first valve (2.4a), first valve (2.4a) and fluid inject volume pump (2.2a) and are connected, fluid injects volume pump (2.2a) and is connected with the second valve (2.4b), second valve (2.4b) is connected with one end of the first threeway (2.5a), the other two ends of the first threeway (2.5a) are connected with one end of the first pressure gauge (2.6a) and the second threeway (2.5b) respectively, the other end of the second threeway (2.5b) is connected with the first end cushion block (3.4a) that core clamps in subsystem (3) by stainless-steel tube (2.1), 3rd end of the second threeway (2.5b) is connected with one end of the 3rd threeway (2.5c) by stainless-steel tube (2.1), the other end of the 3rd threeway (2.5c) connects the 3rd valve (2.4c), 3rd end of the 3rd threeway (2.5c) is connected with one end of the 8th threeway (2.5h) by stainless-steel tube (2.1), the other end of the 8th threeway (2.5h) is connected with differential pressure gauge (2.7), 3rd end of the 8th threeway (2.5h) is connected with one end of the 7th threeway (2.5g), second end of the 7th threeway (2.5g) is connected with one end of the 9th threeway (2.5i), the other end of the 9th threeway (2.5i) is connected with the 3rd valve (2.4c), 3rd end of the 9th threeway (2.5i) is connected with the gas and water separator (4.1) in gas-water separation subsystem (4) by stainless-steel tube (2.1), 3rd end of the 7th threeway (2.5g) is connected with one end of the 6th threeway (2.5f), the other end of the 6th threeway (2.5f) is connected with the second pressure gauge (2.6b), 3rd end of the 6th threeway (2.5f) is connected with the second filtrator (2.3b), second filtrator (2.3b) is connected with the 4th valve (2.4d), 4th valve (2.4d) is connected with gas dosing pump (2.2b), gas dosing pump (2.2b) is connected with the 5th valve (2.4e), 5th valve (2.4e) is connected with one end of the 4th threeway (2.5d), the other end of the 4th threeway (2.5d) is connected with one end of the 5th threeway (2.5e), 3rd end of the 4th threeway (2.5d) is connected with the 7th valve (2.4g), second end of the 5th threeway (2.5e) is connected with vacuum meter (2.9), 3rd end of the 5th threeway (2.5e) is connected with the 6th valve (2.4f), 6th valve (2.4f) is connected with vacuum pump (2.8),
Core clamping subsystem (3) comprises pressure chamber (3.1), confined pressure liquid (3.2), first porous gasket (3.3a), first end cushion block (3.4a), first porous gasket fluid bore (3.5a), first end cushion block fluid bore (3.63a), hydrophobic inner liner stainless steel pipe (3.7), confined pressure pump (3.8), pressure gauge (3.9), threeway (3.10), valve (3.11), sample (3.12) two ends contact with the second porous gasket (3.3b) with the first porous gasket (3.3a) respectively, first porous gasket (3.3a) and the pad of emptying aperture more than second (3.3b) contact with first end cushion block (3.4a) with the second end cushion block (3.4b) respectively, first end cushion block (3.4a), the first porous gasket (3.3a), sample (3.12), the second porous gasket (3.3b), the second end cushion block (3.4b) are by encapsulant (3.13) environmental sealing, first end cushion block fluid bore (3.6a) is injected by stainless-steel tube (2.1) and fluid and is connected with second threeway (2.5b) of control subsystem (2), the first-class body opening of the second end cushion block (3.6b) is connected with the gas and water separator (4.1) in gas-water separation subsystem (4) by hydrophobic inner liner stainless steel pipe (3.7), confined pressure pump (3.8) is connected with threeway (3.10), threeway (3.10) second end is connected with pressure gauge (3.9), threeway (3.10) the 3rd end is connected with valve (3.11), valve (3.11) is connected with the second end cushion block second body opening (3.6c) by stainless-steel tube (2.1), and pressure chamber (3.1) are injected by stainless-steel tube 2.1 and fluid and are connected with the threeway 2.5b of control subsystem 2, pressure chamber 3.1 is connected with the gas and water separator (4.1) in gas-water separation subsystem (4) by hydrophobic inner liner stainless steel pipe (3.7),
Pressure chamber (3.1), connect core clamping subsystem (3) and the hydrophobic internal lining pipe stainless-steel tube (3.7) of gas-water separation subsystem (4), gas and water separator (4.1) is vertical places.
2. a kind of device measuring porous medium air water two-phase relative permeability according to claim 1, is characterized in that: the face that described the second porous gasket (3.3b) contacts with sample (3.12), the second porous gasket fluid bore (3.5b) inwall, the first-class body opening of the second end cushion block (3.6b) inwall, hydrophobic internal lining pipe stainless-steel tube (3.7) inwall are hydrophobic coating surface.
3. a kind of device measuring porous medium air water two-phase relative permeability according to claim 1, it is characterized in that: described gas-water separation subsystem (4) comprises gas and water separator (4.1), differential pressure gauge (4.2), threeway (4.3), threeway (4.3) one end is connected with differential pressure gauge (4.2), the top and bottom of another two ports difference gas and water separator (4.1) of threeway (4.3) connect, gas and water separator (4.1) upper end is connected with hydrophobic inner liner stainless steel pipe (3.7), gas and water separator (4.1) upper end is injected with fluid by stainless-steel tube (2.1) and is connected with the 9th threeway (2.5i) of control subsystem (2).
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| CN104196524B (en) * | 2014-07-14 | 2016-08-17 | 中国地质大学（北京） | A kind of air water output dynamic phase percolation curve measuring method of undersaturation coal seam reservoirs exploitation |
| CN104316449A (en) * | 2014-11-05 | 2015-01-28 | 辽宁石油化工大学 | Experimental method and experimental device for determinating volcanic gas-water relative permeability |
| CN104568694B (en) * | 2014-12-19 | 2017-02-22 | 西南石油大学 | Method for testing gas-water relative permeability of dense core |
| CN104634694A (en) * | 2015-01-23 | 2015-05-20 | 山东科技大学 | Experimental device for measuring lost gas of heterogeneous sandstone in high speed gas injection process |
| CN104765973B (en) * | 2015-04-22 | 2018-01-16 | 西安石油大学 | Method for numerical simulation under the conditions of a kind of coal bed gas is adopted |
| CN105628578A (en) * | 2015-12-21 | 2016-06-01 | 中国石油大学(北京) | Device for evaluating water blocking and releasing properties of core |
| CN106353197B (en) * | 2016-08-22 | 2023-09-15 | 中国科学院武汉岩土力学研究所 | High-pressure multiphase flow coupling rock true triaxial test system and method thereof |
| CN106814018B (en) * | 2017-01-18 | 2023-04-28 | 西南石油大学 | Device and method for measuring gas-phase relative permeability of tight rock |
| CN108680481A (en) * | 2018-05-15 | 2018-10-19 | 中国石油大学(北京) | Permeability saturation curve test method and device |
| CN109883894B (en) * | 2019-03-29 | 2024-03-26 | 西南石油大学 | Ultrahigh-temperature ultrahigh-pressure steady-state gas-water permeability testing device and testing method |
| CN114458285A (en) * | 2021-01-26 | 2022-05-10 | 中国海洋石油集团有限公司 | Automatic metering device for fluid in tight sandstone infiltration experiment and using method thereof |
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