CN205643096U - Test rock core relative permeability's equipment - Google Patents
Test rock core relative permeability's equipment Download PDFInfo
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- CN205643096U CN205643096U CN201620372067.2U CN201620372067U CN205643096U CN 205643096 U CN205643096 U CN 205643096U CN 201620372067 U CN201620372067 U CN 201620372067U CN 205643096 U CN205643096 U CN 205643096U
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Abstract
The utility model provides a test rock core relative permeability's equipment, equipment includes centre gripping unit, carbon dioxide supply unit, salt water supply unit and measuring unit. The sealed chamber that the holder of centre gripping unit has, and respectively with the entry and the export of sealed chamber intercommunication, carbon dioxide supply unit and entry linkage, the rock -entering heart is annotated with overcritical carbon dioxide through the entry to the carbon dioxide injector pump, salt water supply unit and carbon dioxide supply unit are parallelly connected to entering the mouth, and it annotates the rock -entering heart including salt water injector pump that connects gradually and the salt water container of storing salt water solution, salt water injector pump with salt water solution through entering the mouth, measuring unit includes with the parallelly connected head pressure gage to the entry of carbon dioxide supply unit, parallelly connected vapour and liquid separator and outlet pressure meter to the export, is connected to the gas flowmeter of vapour and liquid separator's output, reaches the measurement appearance of the liquid quality that the measurement isolated. The utility model discloses can the relative permeability of analog study two -phase fluid in the rock core.
Description
Technical field
This utility model relates to the technical field of oil-gas mining, particularly to a kind of testing rock core relative permeability, is used for
The equipment of simulation secondary oil gas exploitation.
Background technology
Control to greenhouse gases at present is increasingly subject to pay attention to, and carbon dioxide, as the main Types of greenhouse gases, passes through
The technology that geological storage carries out reducing discharging the most progressively is developed, and the salt water stratum generally injecting carbon dioxide into deep is carried out
Geological storage.When carrying out carbon dioxide geologic sequestration in salt water layer, from the point of view of environment and safety, should pay close attention to
Sealing the indexs such as the maximum charge velocity in injection process, accumulation injectability, migration area up for safekeeping, these indexs depend on
Carbon dioxide transfer ability in salt water stratum.
When formation water and carbon dioxide are injected simultaneously in salt water layer, heterogeneous fluid and the stream of any of which monophasic fluid
Dynamic feature is different, and the transfer ability of heterogeneous fluid is less than monophasic fluid, and production of hydrocarbons industry have studied oil the earliest
Water relative permeability.In salt water layer, carry out carbon dioxide geologic sequestration the most important thing is the phase of carbon dioxide and formation water
To permeability, and relative permeability is difficult to determine, needs special EXPERIMENTAL DESIGN and device.
Mostly the domestic mechanism carrying out relative permeability research at present is according to " biphase relative permeability mensuration side in rock
Method " requirement of (SY/T 5345-2007), by different purpose trial-production experimental provisions, it is mainly used in simulating secondary and adopts
During oil gas, i.e. water flood recovery gas, water drive replaces in-place oil, the process of natural gas, by the research of relative permeability,
Determine injection water and crude oil, the natural gas transport conditions on stratum, provide infiltration relatively for oil-gas field development reservoir modeling
This key parameter of rate.Existing device can realize steady state method, cold store enclosure surveys oil-water relative permeability, or surely
State method, cold store enclosure test gas-liquid relative permeability.Owing to salt water layer geological storage carbon dioxide is emerging as one
Research topic, still belongs to blank to the carbon dioxide of other forms and the relative permeability research of salt water.
Utility model content
For solving above-mentioned technical problem, the utility model proposes the equipment of a kind of testing rock core relative permeability, research
And measure supercritical carbon dioxide and salt water relative permeability in rock core.
The utility model proposes the equipment of a kind of testing rock core relative permeability, described equipment includes:
Grip unit, including clamper, described clamper has the annular seal space for clamping rock core, and respectively with described
The entrance and exit of annular seal space connection；
Carbon dioxide feed unit, it is connected with described entrance, and passes through carbon dioxide injection pump by supercritical titanium dioxide
Carbon injects described rock core through described entrance；
Salt water feed unit, it is parallel to described entrance, described salt water feed unit with described carbon dioxide feed unit
Including the salt water injection pump being sequentially connected with and the salt water container storing salt water solutions, by described salt water injection pump by described
Salt water solutions injects described rock core through described entrance；
Measuring unit, is parallel to the head pressure gage of described entrance including with described carbon dioxide feed unit, is parallel to
The gas-liquid separator of described outlet and discharge gage, it is connected to the gas flow of the outfan of described gas-liquid separator
Meter, and for measuring the gauge of the liquid quality that described gas-liquid separator separates goes out.
Further, described clamper is column, described entrance and described outlet axially setting respectively along described clamper
Put the two ends at described clamper；
The equipment of described testing rock core relative permeability also includes that ring presses unit, described ring pressure unit to include being placed in described folder
Ring pressure outside holder follows the tracks of pump and the seal rubber sleeve being wrapped on described rock core side surface, and described ring pressure follows the tracks of pump by pipe
Road connects with described annular seal space, follows the tracks of pump to the outside of the described seal rubber sleeve described seal rubber sleeve of pressure by described ring pressure
Being adjacent to described rock core, described ring pressure follows the tracks of the ring pressure pressure more than described entrance of pump generation.
Further, the equipment of described testing rock core relative permeability also includes being parallel to described with described gas-liquid separator
The back pressure unit of outlet, described back pressure unit includes the backpressure pump being placed in outside described clamper and is arranged on described exit
And the catch of plastic deformation can be produced, produce plastic deformation by described backpressure pump to the described catch described catch that presses,
Described outlet is opened by the plastic deformation of described catch.
Further, described carbon dioxide feed unit includes the booster pump being sequentially connected with, stores gaseous carbon dioxide
First storage tank and the second storage tank of storing liquid carbon dioxide, the outfan of described second storage tank is connected with described entrance,
Being heated by described gaseous carbon dioxide by heating warmer and be incubated, in described second storage tank, preparation is formed described super
Critical carbon dioxide, by storing up tank connected described carbon dioxide injection pump by described supercritical titanium dioxide with described second
Carbon injects described rock core through described entrance.
Further, described heating warmer includes the first heating cushion being wrapped in described first storage tank outer surface, and
It is wrapped in the second heating cushion of described second storage tank outer surface.
It is plunger displacement pump as a kind of enforceable mode, described carbon dioxide injection pump and described salt water injection pump.
Further, the difference between described ring pressure and the pressure of described entrance is more than or equal to 2 MPas.
Further, the back pressure that described backpressure pump produces is more than 7.38 MPas, and described back pressure can be with described entrance
The rising of pressure and raise, the difference between pressure and the described back pressure of described entrance is one constant in injection process
Value.
This utility model having the beneficial effects that compared to prior art: testing rock core relative permeability of the present utility model
Equipment, study and measure supercritical carbon dioxide and salt water relative permeability in rock core, preferably simulate salty
Truth in water layer, is possible not only to evaluate more accurately the ability of salt water layer sequestration of carbon dioxide, it is also possible to more accurate
Really predict carbon dioxide migration area in salt water layer, thus evaluate salt water layer sequestration of carbon dioxide more accurately
Safety.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the equipment of testing rock core relative permeability of the present utility model；
Fig. 2 is that the relative permeability recorded by the equipment of testing rock core relative permeability of the present utility model is with rock core
Water saturation change curve chart.
Reference:
10-clamper；12-entrance；14-exports；20-carbon dioxide feed unit；22-booster pump；
24-the first storage tank；26-the second storage tank；28-carbon dioxide injection pump；
32-salt water container；34-salt water injection pump；52-head pressure gage；54-discharge gage；
56-gas-liquid separator；57-gas flowmeter；58-gauge；
62-the first heating cushion；64-the second heating cushion；72-ring pressure follows the tracks of pump；82-backpressure pump.
Detailed description of the invention
Below in conjunction with accompanying drawing, to this utility model, above-mentioned and other technical characteristic and advantage are carried out clearly and completely
Describe, it is clear that described embodiment is only section Example of the present utility model rather than whole embodiment.
Refer to shown in Fig. 1, the equipment of a kind of testing rock core relative permeability, supply including grip unit, carbon dioxide
To unit 20, salt water feed unit and measuring unit.
Grip unit includes that clamper 10, clamper 10 have an annular seal space for clamping rock core, and respectively with sealing
The entrance 12 of chamber connection and outlet 14.Carbon dioxide feed unit 20 is connected with entrance 12, and passes through carbon dioxide
Supercritical carbon dioxide is injected rock core through entrance 12 by injection pump 28；Salt water feed unit and carbon dioxide feed unit
Being parallel to entrance 12, salt water feed unit includes the salt water injection pump 34 being sequentially connected with and the salt water storing salt water solutions
Container 32, injects rock core by the salt water solutions in salt water container 32 through entrance 12 by salt water injection pump 34.Measure
Unit includes being parallel to the head pressure gage 52 of entrance 12 with carbon dioxide feed unit, being parallel to export the gas of 14
Liquid/gas separator 56 and discharge gage 54, it is connected to the gas flowmeter 57 of the outfan of gas-liquid separator 56, and
For measuring the gauge 58 of the isolated liquid quality of gas-liquid separator 56.
Due in actual carbon dioxide geologic sequestration project, from the consideration of safety, the salt water that selected depth is bigger
Layer is as the stratum (1000 meters～2000 meters, or deeper) of carbon dioxide sequestration, and temperature, pressure condition has reached two
The super critical condition of carbonoxide.Therefore, in the stratum that the degree of depth is bigger, carry out that supercritical carbon dioxide is relative with salt water to be oozed
The research of rate thoroughly, the research liquid that compares or gaseous carbon dioxide and salt water relative permeability, can simulate more accurately
With the practical situation of description carbon dioxide underground sequestration, thus obtained parameter (relative permeability), corresponding analysis obtains
The carbon dioxide migration more realistic situation of Distribution dynamics arrived, the significantly more efficient raising carbon dioxide geological of energy injects
Safety.
When the salt water layer depth of sequestration of carbon dioxide is more than 800 meters, and temperature is higher than 31.3 degrees Celsius, and pressure is higher than 7.38
MPa time, gaseous carbon dioxide can be converted into liquid or supercritical carbon dioxide, therefore, carry out salt water layer and seal dioxy up for safekeeping
Should carry out for the relative permeability of liquid or supercritical carbon dioxide with formation water (salt water) when changing the research of carbon.This
Utility model proposes a kind of measurement equipment for supercritical carbon dioxide and the relative permeability of salt water, can apply to two
The scientific research of carbonoxide geological storage in salt water layer and engineering project.This utility model uses supercritical carbon dioxide
The critical state of liquid carbon dioxide (gaseous carbon dioxide be converted into) carries out experiment and measures.Relative permeability is impact
The important parameter of two-phase fluid moving distribution in the earth formation, is possible not only to evaluate the energy of salt water stratum sequestration of carbon dioxide
Power, it is also possible to prediction carbon dioxide migration area in the earth formation, evaluates the safety of salt water layer sequestration of carbon dioxide,
Therefore, accurately measure supercritical carbon dioxide and salt water relative permeability in rock core has very important significance.
This utility model can realize the preparation of supercritical carbon dioxide, before gaseous carbon dioxide enters clamper 10,
By the way of temperature-pressure, make carbon dioxide temperature be higher than 31.3 degrees Celsius, and pressure is higher than 7.38 MPas, reaches
To supercriticality.Carbon dioxide feed unit 20 at entrance 12 and salt water feed unit in parallel, will be super
Critical carbon dioxide and salt water solutions displacement rock core simultaneously, thus when simulating salt water layer geological storage carbon dioxide in rock core
Microcosmic situation, in clamper temperature higher than 31.3 degrees Celsius, pressure is higher than 7.38 MPas, it is ensured that displacement process two
Carbonoxide keeps above-critical state.Supercritical dioxy is controlled respectively by carbon dioxide injection pump 28 and salt water injection pump 34
Change carbon and the injection flow of salt water solutions, measure rock core under different water cut saturation to supercritical carbon dioxide and salt water
The relative permeability of solution, can be right by the gas flowmeter 57 at the outlet 14 of clamper 10 and gauge 58
The isolated carbon dioxide of gas-liquid separator 56 and salt water solutions measure respectively.
Further, clamper 10 in column, entrance 12 and outlet 14 being axially separately positioned on along clamper 10
The two ends of clamper 10.The equipment of testing rock core relative permeability also includes that ring presses unit, ring pressure unit to include being placed in
Ring pressure outside clamper 10 follows the tracks of pump 72 and the seal rubber sleeve being wrapped on rock core side surface, and ring pressure tracking pump 72 leads to
Piping connects with annular seal space, follows the tracks of pump 72 by ring pressure and presses to the outside of seal rubber sleeve, makes seal rubber sleeve be adjacent to
Rock core, ring pressure follows the tracks of the ring pressure pressure more than entrance 12 of pump 72 generation.
Further, the difference between ring pressure and the pressure of entrance 12 is more than or equal to 2 MPas.Thus ensure close
Sealing set is adjacent to rock core, prevents the fluid generation side leakage injecting in the cavity of clamper 10, it is impossible to by rock core and
Zhongdao reaches at outlet 14.The generally difference between ring pressure and the pressure of entrance 12 is preferably 2 MPas, and this difference is the biggest,
Seal rubber sleeve is tightr with rock core laminating.
Further, the equipment of testing rock core relative permeability also includes being parallel to export 14 with gas-liquid separator 56
Back pressure unit, backpressure pump 82 that back pressure unit includes being placed in outside clamper 10 and be arranged at outlet 14 and can produce
The catch of raw plastic deformation, uses backpressure pump 82 to press to catch, makes catch produce plastic deformation and open outlet 14.
In the present embodiment, catch is an elastic sheet, and backpressure pump 82 is a hand pump, and the rotation of hand pump makes elastic sheet
Closing outlet 14, when the pressure at entrance 12 is more than the pressure exported at 14, elastic sheet produces plastic deformation
Thus open outlet.
Further, the back pressure that backpressure pump 82 produces is more than 7.38 MPas, and in injection process, back pressure can be with entering
The rising of the pressure of mouthfuls 12 and raise, the difference between pressure and the back pressure of entrance 12 is a steady state value, makes outlet
The aperture of 14 keeps consistent, and this steady state value is generally 2 MPas.
Further, carbon dioxide feed unit 20 includes the booster pump 22 being sequentially connected with, stores gaseous carbon dioxide
The first storage tank 24 and the second storage tank 26 of storing liquid carbon dioxide, the outfan of the second storage tank 26 and entrance 12
Connecting, heat by gaseous carbon dioxide by heating warmer and be incubated, in the second storage tank 26, preparation is formed to surpass and faces
Boundary's carbon dioxide, is faced super in the second storage tank 26 by the carbon dioxide injection pump 28 that is connected with the second storage tank 26
Boundary's carbon dioxide injects rock core through entrance 12.
As a kind of enforceable mode, heating warmer includes the first heating being wrapped in the first storage tank 24 outer surface
Pad 62, and it is wrapped in the second heating cushion 64 of the second storage tank 26 outer surface.Can also be by carbon dioxide feed unit
20 or the first storage tank 24 and the second storage tank 26 are placed on constant temperature space (in the present embodiment, constant temperature space is one
Calorstat) in, make constant temperature be maintained at more than 31.3 degrees Celsius, so that the supercritical two in the second storage tank 26
Carbonoxide keeps stable state.
It is plunger displacement pump as a kind of enforceable mode, carbon dioxide injection pump 28 and salt water injection pump 34.This reality
Executing in example, gauge 58 is electronic balance.
The using method of the equipment of testing rock core relative permeability of the present utility model comprises the steps:
Step S10, is clamped in rock core in the annular seal space of clamper 10, uses booster pump 22 by the first storage tank 24
In gaseous carbon dioxide pressurization, use heating warmer heated gaseous carbon dioxide, until the pressure of gaseous carbon dioxide
Strong and temperature reaches critical condition (reaching supercriticality), and preparation forms supercritical carbon dioxide and is stored in second
In storage tank 26；
Step S20, uses salt water injection pump 34 to be injected through entrance 12 by the salt water solutions stored in salt water container 32
In rock core, until salt water solutions reaches saturation in rock core；
Step S30, continues to inject salt water solutions, uses carbon dioxide injection pump 28 by the second storage tank 26 simultaneously
Supercritical carbon dioxide is injected in rock core, until salt water solutions and supercritical carbon dioxide all reach saturated in rock core
State；
Step S40, uses head pressure gage 52 to measure the force value of entrance 12, uses outlet 14 manometries
The force value of outlet 14, when the force value of the force value of entrance 12 and outlet 14 all reaches steady statue, stops note
Enter salt water solutions and supercritical carbon dioxide；The data measured according to gas flowmeter 57 and gauge 58, calculate
Go out the relative permeability of salt water solutions in the water saturation of rock core, rock core and supercritical carbon dioxide relative in rock core
Permeability.
Generally when export have fluid to ooze out at 14 time, after fluid volume reaches the rock pore volume of 2-3 times, just
May determine that salt water solutions and supercritical carbon dioxide reach saturated in rock core；The calculating of rock pore volume belongs to public
Knowing general knowledge, here is omitted.Become at the bias internal of five minutes with the force value of outlet 14 in the force value of entrance 12
Change less than 0.1 MPa, be and reach steady statue.
The equipment of testing rock core relative permeability of the present utility model and the method for testing rock core relative permeability, research is also
Measuring supercritical carbon dioxide and salt water solutions relative permeability in rock core, preferably simulate in salt water layer is true
Truth condition, is possible not only to evaluate more accurately the ability of salt water layer sequestration of carbon dioxide, it is also possible to predict two more accurately
Carbonoxide migration area in salt water layer, thus evaluate the safety of salt water layer sequestration of carbon dioxide more accurately.
Further, in step S40, calculated the water saturation of rock core by gravimetric method, according to formula
Kwe=(Qw × Uw × L)/[A × (P1-P2)] × 100, Krw=Kwe/Ko (Sws) calculates the phase of salt water solutions successively
To permeability, according to formula Koe=(Qo × Uo × L)/[A × (P1-P2)] × 100, Kro=Koe/Ko (Sws) is successively
Calculate the relative permeability of supercritical carbon dioxide；
Wherein, Kwe is the effective permeability of salt water solutions, and Koe is the effective permeability of supercritical carbon dioxide, Qw
For the flow of salt water solutions, Uw is the viscosity of salt water solutions at a temperature of current test, and Qo is supercritical carbon dioxide
Flow, Uo is the viscosity of supercritical carbon dioxide at a temperature of current test, and A is the sectional area of rock core, and P1 is entrance
The force value of 12, P2 is the force value of outlet 14, and L is the length of clamper 10, and Krw is the relative of salt water solutions
Permeability, Kro is the relative permeability of supercritical carbon dioxide, and Ko (Sws) is the supercritical two under irreducible water state
The permeability of carbonoxide.
Further, in step S30, the flow sum of the flow of salt water solutions and supercritical carbon dioxide is one to fix
Value.
Further, in step S30, the flow of salt water solutions is 10 with the flow sum of supercritical carbon dioxide
Milliliter is per minute.Flow sum should carry out value according to the penetrating power of rock core, the rock core value phase that penetrating power is more weak
To less, it is to avoid flow is excessive cause excessive with true stratum difference, so that analog distortion.
Further, in step S30, the flow of salt water solutions and the flow of supercritical carbon dioxide are respectively by least
Two kinds of different ratios are injected in rock core, perform step S40 respectively, calculate rock core when injecting in each ratio
Water saturation, the relative permeability of salt water solutions and the relative permeability of supercritical carbon dioxide.
Further, after S40, also set up step S50, according to the rock core calculated when injecting in each ratio
Water saturation, the relative permeability of salt water solutions and the relative permeability of supercritical carbon dioxide, set up salty respectively
The song that the relative permeability of aqueous solution and the relative permeability of supercritical carbon dioxide change with the water saturation of rock core
Line chart, as shown in Figure 2.
Further, in step S30, the flow of salt water injection pump 34 divides with the flow of carbon dioxide injection pump 28
It is not injected in rock core in five kinds of ratios of 9:1,7:3,5:5,3:7,1:9.
In the present embodiment, testing certain oil field salt water layer formation core, this rock core is packsand, porosity
15%, perm-plug method 0.54 milli reaches.Result of laboratory test configuration salt water solutions according to certain oilfield brine layer formation water, if
Salt water solutions, more than 15 MPas, is injected in the rock core of clamper 10 by the pressure of fixed two plunger displacement pumps by plunger displacement pump,
Control confined pressure and maintain bigger than the pressure of entrance 12 (injection end) 2 MPas, until the pressure of entrance 12 reaches 15,000,000
Handkerchief, confined pressure reaches 17 MPas, until stable.
In the equipment of testing rock core relative permeability, clamper 10 specification is: φ 25mm and φ 38mm；Clamper 10
The maximum of the ring pressure that can bear is 50 MPas, and the maximum of back pressure is 50 MPas.Testing rock core relative permeability
The maximum operating temperature of equipment is 150 DEG C, temperature-controlled precision ± 1 DEG C.High precision piston pump (salt water injection pump 34 and two
Carbonoxide injection pump 28) flow-control scope 0.01-60 milliliter per minute, maximum working pressure (MWP) 60 MPas, and
There is constant pressure and flow displacement function.The gas dosing precision of gas flowmeter 57 is ± 1.5%R, the meter of gauge 58
Accuracy of measurement is 0.0001g.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
The detailed description of step, it will be appreciated that the foregoing is only specific embodiment of the utility model, is not used to limit
Fixed protection domain of the present utility model.Particularly point out, to those skilled in the art, all of the present utility model
Within spirit and principle, any modification, equivalent substitution and improvement etc. done, should be included in guarantor of the present utility model
Within the scope of protecting.
Claims (8)
1. the equipment of a testing rock core relative permeability, it is characterised in that described equipment includes:
Grip unit, including clamper, described clamper has the annular seal space for clamping rock core, and respectively with described
The entrance and exit of annular seal space connection；
Carbon dioxide feed unit, it is connected with described entrance, and passes through carbon dioxide injection pump by supercritical titanium dioxide
Carbon injects described rock core through described entrance；
Salt water feed unit, it is parallel to described entrance, described salt water feed unit with described carbon dioxide feed unit
Including the salt water injection pump being sequentially connected with and the salt water container storing salt water solutions, by described salt water injection pump by described
Salt water solutions injects described rock core through described entrance；
Measuring unit, is parallel to the head pressure gage of described entrance including with described carbon dioxide feed unit, is parallel to
The gas-liquid separator of described outlet and discharge gage, it is connected to the gas flow of the outfan of described gas-liquid separator
Meter, and for measuring the gauge of the liquid quality that described gas-liquid separator separates goes out.
The equipment of testing rock core relative permeability the most according to claim 1, it is characterised in that described clamping
Device is column, and described entrance and described outlet are along the two ends being axially separately positioned on described clamper of described clamper；
The equipment of described testing rock core relative permeability also includes that ring presses unit, described ring pressure unit to include being placed in described folder
Ring pressure outside holder follows the tracks of pump and the seal rubber sleeve being wrapped on described rock core side surface, and described ring pressure follows the tracks of pump by pipe
Road connects with described annular seal space, follows the tracks of pump to the outside of the described seal rubber sleeve described seal rubber sleeve of pressure by described ring pressure
Being adjacent to described rock core, described ring pressure follows the tracks of the ring pressure pressure more than described entrance of pump generation.
The equipment of testing rock core relative permeability the most according to claim 1, it is characterised in that described test
The equipment of rock core relative permeability also includes being parallel to the back pressure unit of described outlet with described gas-liquid separator, described time
Pressure unit includes the backpressure pump being placed in outside described clamper and is arranged on described exit and can produce the gear of plastic deformation
Sheet, is produced plastic deformation by described backpressure pump to the described catch described catch of pressure, is become by the plasticity of described catch
Shape opens described outlet.
The equipment of testing rock core relative permeability the most according to claim 1, it is characterised in that described dioxy
Change booster pump, the first storage tank storing gaseous carbon dioxide and storing liquid dioxy that carbon feed unit includes being sequentially connected with
Changing the second storage tank of carbon, the outfan of described second storage tank is connected with described entrance, by heating warmer by described gas
State carbon dioxide heats and is incubated, in described second storage tank preparation formed described supercritical carbon dioxide, by with institute
State the second tank connected described carbon dioxide injection pump of storage and described supercritical carbon dioxide is injected through described entrance described
Rock core.
The equipment of testing rock core relative permeability the most according to claim 4, it is characterised in that described heating
Thermophore includes the first heating cushion being wrapped in described first storage tank outer surface, and is wrapped in described second storage tank outer surface
The second heating cushion.
The equipment of testing rock core relative permeability the most according to claim 1, it is characterised in that described dioxy
Change carbon injection pump and described salt water injection pump is plunger displacement pump.
The equipment of testing rock core relative permeability the most according to claim 2, it is characterised in that described ring pressure
And the difference between the pressure of described entrance is more than or equal to 2 MPas.
The equipment of testing rock core relative permeability the most according to claim 3, it is characterised in that described back pressure
The back pressure that pump produces is more than 7.38 MPas, and described back pressure can raise with the rising of the pressure of described entrance, described in enter
Difference between pressure and the described back pressure of mouth is a steady state value in injection process.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105784567A (en) * | 2016-04-28 | 2016-07-20 | 中国石油天然气股份有限公司 | Equipment and method for testing relative permeability of rock cores |
| CN106970016A (en) * | 2017-05-12 | 2017-07-21 | 滁州职业技术学院 | One kind test porous media permeability experiment platform |
| CN107014731A (en) * | 2017-03-29 | 2017-08-04 | 东北大学 | A kind of hypotonic rock gas-liquid two drives pressure pulse decay infiltration experiment device and method |
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| CN109164032A (en) * | 2018-11-01 | 2019-01-08 | 中国矿业大学 | Full-automatic salt water-the supercritical CO of rock2Two-phase permeability test macro and method |
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| CN105784567A (en) * | 2016-04-28 | 2016-07-20 | 中国石油天然气股份有限公司 | Equipment and method for testing relative permeability of rock cores |
| CN107014731A (en) * | 2017-03-29 | 2017-08-04 | 东北大学 | A kind of hypotonic rock gas-liquid two drives pressure pulse decay infiltration experiment device and method |
| CN107014731B (en) * | 2017-03-29 | 2019-06-25 | 东北大学 | A kind of drive of hypotonic rock gas-liquid two pressure pulse decaying permeability test method |
| CN107202875A (en) * | 2017-04-25 | 2017-09-26 | 中国石油天然气股份有限公司 | Determine system and method for the under test gas to stratum lithological effects |
| CN107202875B (en) * | 2017-04-25 | 2019-09-10 | 中国石油天然气股份有限公司 | Determine under test gas to the system and method for stratum lithological effects |
| CN106970016A (en) * | 2017-05-12 | 2017-07-21 | 滁州职业技术学院 | One kind test porous media permeability experiment platform |
| CN109164032A (en) * | 2018-11-01 | 2019-01-08 | 中国矿业大学 | Full-automatic salt water-the supercritical CO of rock2Two-phase permeability test macro and method |
| CN111220525A (en) * | 2020-01-20 | 2020-06-02 | 中南大学 | Supercritical carbon dioxide rock fracture seepage device under high-temperature and high-pressure conditions |
| CN111220525B (en) * | 2020-01-20 | 2022-01-28 | 中南大学 | Supercritical carbon dioxide rock fracture seepage device under high-temperature and high-pressure conditions |
| CN112326927A (en) * | 2020-10-21 | 2021-02-05 | 西南石油大学 | Pore scale microscopic water invasion simulation experiment visualization device and method |
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