CN107402169A - A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack - Google Patents
A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack Download PDFInfo
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- CN107402169A CN107402169A CN201710631907.1A CN201710631907A CN107402169A CN 107402169 A CN107402169 A CN 107402169A CN 201710631907 A CN201710631907 A CN 201710631907A CN 107402169 A CN107402169 A CN 107402169A
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- microcrack
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- 239000011148 porous material Substances 0.000 title claims abstract description 31
- 239000011159 matrix material Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000003760 magnetic stirring Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000004069 differentiation Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011156 evaluation Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 12
- 239000011521 glass Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 206010001488 Aggression Diseases 0.000 description 1
- 208000035126 Facies Diseases 0.000 description 1
- 241000519996 Teucrium chamaedrys Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N2013/003—Diffusion; diffusivity between liquids
Abstract
The invention discloses a kind of device for distinguishing shale reservoir matrix pores and microcrack, including analysis controlling unit, temperature control unit, measuring ion unit, level control unit；The invention also discloses a kind of method that matrix pores and microcrack feature are distinguished using described device, the device of the present invention can efficiently control the influence that the evaporation capacity of liquid and temperature spread to ion in closed container using level control unit and temperature control unit, and measure conductivity variations of the shale particle of different-grain diameter in mixed liquor in real time by measuring ion unit；The present invention changes with time according to the electrical conductivity measured can effectively evaluate shale matrix pores and the feature of microcrack.The present invention provides new experiment test technology and method for shale reservoir pore Structure Analysis, and the field such as assessment has potential application value after shale reservoir evaluation, capability forecasting and pressure.
Description
Technical field
The invention belongs to rock physicses technical field, and in particular to a kind of shale reservoir matrix pores and microcrack distinguished
Devices and methods therefor.
Background technology
Shale gas be a kind of reserves it is huge, cleaning unconventional petroleum resources, have become China's grand strategy energy it
One.Shale reservoir has the double medium features of diplopore, while develops matrix pores and microcrack, and pore structure is complex, is page
The work of rock evaluating reservoir brings difficulty.Meanwhile matrix pores and microcrack exist to the preservation and seepage effect of shale gas it is bright
Aobvious difference, it is necessary to studied respectively.However, still no method can accurately distinguish matrix pores and the feature of microcrack.
The salinity of returning fluid is higher after shale gas well fracturing, and this spontaneous diffusion with from shale reservoir salt ion to fracturing fluid is relevant.Grind
Study carefully and find that the diffusion process of salt ion can be good at the micropore structure information reflected inside shale.Therefore, base of the present invention
In rammell salt ion diffusion experiment establish a kind of experimental provision for distinguishing shale reservoir matrix pores and microcrack feature and its
Method.
The content of the invention
First purpose of the present invention is to provide a kind of device for distinguishing shale reservoir matrix pores and microcrack, described
Device can efficiently control the influence that the evaporation capacity of liquid and temperature spread to ion in closed container, measure shale particle in real time
Conductivity variations in mixed liquor, according to the tracing pattern of the shale grain conduction rate of different-grain diameter, evaluation shale matrix hole
The feature of gap and microcrack.
Second object of the present invention is to provide a kind of differentiation shale reservoir matrix pores and the method for microcrack, described
Method have it is simple to operate, fast and accurately the characteristics of.
To reach above-mentioned purpose, the present invention uses following technical scheme：
A kind of device for distinguishing shale reservoir matrix pores and microcrack, including
Temperature control unit, for controlling the constant of experimentation temperature；Including thermostatic chamber, and it is arranged on the constant temperature
Indoor thermostat and temperature sensor；
Measuring ion unit, including in the thermostat and the closed container of sample mixed liquor is filled, and measure
The conductivity gauge of the sample mixed liquor electrical conductivity；The temperature sensor is located in the closed container；
Level control unit, it is arranged in the thermostat, for adjusting the body of sample mixed liquor in the closed container
Product, including the graded tube of the closed container lower end is connected to, and be arranged on the graded tube and connected with the closed container
The filter screen at place；
Analysis controlling unit, it is arranged on outside the thermostatic chamber, for handling the conductivity gauge and the temperature sensor
Data, so that user obtains experimental result.
Preferably, the lower end of the conductivity gauge and the temperature sensor is each passed through the top of the closed container and stretched
Enter in the sample mixed liquor, upper end extends respectively to connect the analysis controlling unit outside closed container and by wire.
Preferably, in order to accelerate the diffusion of salt ion in shale particle, it is provided with the closed container for stirring sample
Savor the magnetic stirring apparatus of mixed liquor.
Preferably, the salinity for more preferable analog depth after the shale formation within 2000-3000m contacts with fracturing fluid
Change, the temperature of the thermostatic chamber is 0 DEG C~80 DEG C, and the thermostat is identical with the constant temperature room temperature.
Preferably, the volume of the closed container is 250-350mL,.
It is a kind of to distinguish shale reservoir matrix pores and the method for microcrack, comprise the following steps：
1) shale samples are ground into particle, then the particle is sieved with different sieves, obtains different-grain diameter
Sample particle；
2) sample particle of the different-grain diameter is respectively dried, its quality is no longer changed；
3) by a certain the particle diameter sample particle and water after drying be separately added into it is described differentiation shale reservoir matrix pores with it is micro-
In the closed container of crack device, sample mixed liquor is obtained；Electrical conductivity lower end is stretched into the sample mixed liquor, and with closed appearance
The bottom of device keeps 4-10cm distance；
4) open magnetic stirring apparatus to be stirred, then the initial conductivity of determination sample mixed liquor；
5) magnetic stirring apparatus is closed, sample mixed liquor electrical conductivity is recorded after sample mixed liquor is static and is changed with time,
And sample mixed liquor electrical conductivity is drawn with time subduplicate change curve；
6) repeat step 3), 4) and 5), until completing the measurement of all different-grain diameter sample particles.
Preferably, in step 1), the sieve be 6-400 mesh sieve, such as sieve screen cloth for 6 mesh, 8 mesh, 10 mesh,
20 mesh, 40 mesh, 60 mesh, 80 mesh, 100 mesh and 400 mesh etc..
Preferably, in step 3), the quality of the sample particle is 5-15g；The quality of sample particle is by repeatedly real
Acquisition is tested, if quality is less than 5g, is difficult to ensure that sample mixed liquor electrical conductivity measuring accuracy；If quality is higher than 15g, greatly
The big workload for improving shale samples and crushing and sieving；The mass ratio of the water and sample particle is：1:10-50.
Preferably, in step 4), it is described stirring be in order to allow the salt ion on sample particle surface to be dissolved into solution rapidly,
If mixing time is too short, salt ion can not fully dissolve；If mixing time is long, salt inside sample particle from
Son can be diffused into solution, and then influences the measuring accuracy of mixed liquor initial conductivity；Preferably, by many experiments, institute
It is 2-5min to state mixing time；It is highly preferred that the mixing time is 2min.
Preferably, in step 2), in order to thoroughly dry the sample particle so that the quality of sample particle no longer becomes
Change, the temperature of the drying is 100-120 DEG C.
It is further noted that if not otherwise specified, any scope described in the present invention includes end value and end value
Between any subrange for being formed of any numerical value and any number between end value or end value.
Present invention differentiation shale reservoir matrix pores can efficiently control close with the level control unit in microcrack device
The influence that liquid evaporation amount spreads to ion in container is closed, combination temperature control unit can efficiently control temperature and ion is spread
Influence, measure conductivity variations of the shale particle of different-grain diameter in mixed liquor in real time finally by measuring ion unit.
Beneficial effects of the present invention are as follows：
1st, device of the invention can efficiently control liquid in closed container using level control unit and temperature control unit
The influence that the evaporation capacity and temperature of body spread to ion, and the shale of different-grain diameter is measured by measuring ion unit in real time
Conductivity variations of the grain in mixed liquor；Because spontaneous diffusion of the shale reservoir salt ion into water can be good at reflecting shale
Reservoir micropore structure information, therefore of the invention changed with time according to the electrical conductivity measured can effectively evaluate shale
The feature of matrix pores and microcrack；
2nd, the present invention provides new experiment test technology and method for shale reservoir pore Structure Analysis, unconventional
The fields such as discharge opeing salinity analysis are returned in assessment after shale reservoir evaluation, the micro-nano hole mass transfer of capability forecasting, pressure has potential answer
With value.
Brief description of the drawings
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows that the present invention distinguishes shale reservoir matrix pores and the structural representation of microcrack device.
Fig. 2 shows electrical conductivity subduplicate change curve over time.
Wherein, 1, thermostatic chamber, 2, graded tube, 3, conductivity gauge, 4, filter screen, 5, thermostat, 6, magnetic stirring apparatus, 7, sealing
Lid, 8, glass container, 9, sample mixed liquor, 10, temperature sensor, 11, computer.
Embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.It will be appreciated by those skilled in the art that specifically described content is illustrative and be not restrictive below, should not be with this
Limit the scope of the invention.
Shale samples used come from China Sichuan Basin marine facies shale formation in following embodiments, and water used is distillation
Water.
Embodiment 1
With reference to shown in Fig. 1, in an embodiment of the invention, one kind distinguishes shale reservoir matrix pores and microcrack
Device, including including analysis controlling unit, temperature control unit, measuring ion unit and level control unit.Temperature control list
Member, for controlling the constant of experimentation temperature, including thermostatic chamber 1, and the thermostat 5 and temperature being arranged in thermostatic chamber 1
Sensor 10.Measuring ion unit, including in thermostat 5 and the closed container of sample mixed liquor is filled, and positioned at perseverance
Greenhouse 1 is interior and measures the conductivity gauge 3 of sample mixed liquor electrical conductivity；Temperature sensor 10 is arranged in the closed container.Liquid level
Control unit, it is arranged in thermostat 5, including is connected to the graded tube 2 of closed container lower end, and is arranged on the He of graded tube 2
The filter screen 4 of closed container junction；Analysis controlling unit, it is arranged on outside the thermostatic chamber 1, for handling the He of conductivity gauge 3
The data of the temperature sensor 10, so that user obtains experimental result.
In experimentation, thermostatic chamber 1 is used to maintain the constant of experimental situation temperature, and thermostat 5 is used to keep closed appearance
Temperature is constant in device, and temperature sensor 10 is used for the temperature for detecting sample mixed liquor in closed container；The present invention passes through temperature
Control unit realizes the constant of sample mixeding liquid temperature in experimentation, and then reduces because ambient temperature changes to closed container
Influenceed caused by intermediate ion diffusion rate.The body of mixed liquor in closed container is observed by the graded tube 2 connected with closed container
Product change；When observing that the liquid in graded tube 2 declines, in order to maintain the constant of closed container salt ionic concentration, then to quarter
Water is instilled to keep sample mixeding liquid volume in closed container constant in degree pipe 2.Utilize simultaneously and be arranged on graded tube 2 and closed appearance
Filter screen 4 between device keeps off shale particle in closed container, prevents shale particle from entering graded tube 2 and then blocks graded tube 2.
In order to accelerate the salt ion diffusion rate in shale particle, the magnetic force for stirred sample mixed liquor is provided with closed container
Agitator 6, stirring collects the signal of conductivity gauge 3 and temperature sensor 10 using analysis controlling unit after terminating, so as to user
Experimental result is obtained, and then data are handled and analyzed.
In yet another embodiment of the present invention, the lower end of conductivity gauge 3 and temperature sensor 10 is each passed through closed
The top of container and stretch into the sample mixed liquor in closed container, upper end extends respectively to that closed container is outer and linking parsing control
Unit processed.Preferably, the upper end of conductivity gauge 3 and temperature sensor 10 is connected to analysis controlling unit by wire.
In yet another embodiment of the present invention, in order to preferably observe the state of sample mixed liquor in closed container,
Preferably, closed container is the container of glass material.
In embodiments of the present invention, it is preferable that closed container is that glass container 8 and closure 7 form.
In embodiments of the present invention, in order to more rapidly, more accurately evaluate the spy of shale matrix pores and microcrack
Sign, it is preferable that the present invention distinguishes shale reservoir matrix pores and uses midget plant with microcrack device, and the volume of closed container is
250-350mL；It is highly preferred that the volume of closed container is 250mL.
In embodiments of the present invention, in order to which preferably analog depth is in 2000-3000m shale formation and fracturing fluid
Salinity altercation after contact, preferably reflects actual condition.Preferably, the temperature of the thermostatic chamber 1 and thermostat 5 be 0 DEG C~
80℃。
Embodiment 2
A kind of device using embodiment 1 distinguishes shale reservoir matrix pores and the method for microcrack, comprises the following steps：
1) shale samples are ground into particle, then sieved the particle with the sieve of 6 mesh, obtain particle diameter as 3350
μm sample particle；
2) sample particle is dried under conditions of 105 DEG C, its quality is no longer changed；
3) sample particle after 10g drying and 200mL distilled water is taken to be separately added into 250mL glass container, sample
Salt ion can be distributed in water in particle, obtain sample mixed liquor；Sample mixed liquor is stretched into the lower end of conductivity gauge through closure
In, and keep with the bottom of glass container 4-6cm distance；
4) open magnetic stirring apparatus and be stirred 2min, then the initial conductivity of determination sample mixed liquor；Stirring finishes
Afterwards, initial conductivity is measured rapidly.
5) close magnetic stirring apparatus, after sample mixed liquor is static record sample mixed liquor 0h, 2h, 4h15h, 60h,
130h, 260h and 520h electrical conductivity, and sample mixed liquor electrical conductivity is drawn with time subduplicate change curve.As a result such as
Shown in Fig. 2.
Embodiment 3
The method of shale reservoir matrix pores and microcrack is distinguished with embodiment 2, other steps are constant, only change step
1), such as：
1) shale samples are ground into particle, then sieved the particle with the sieve of 8 mesh, obtain particle diameter as 2360
μm sample particle；
Embodiment 4 is to embodiment 10
The method of shale reservoir matrix pores and microcrack is distinguished with embodiment 2, other steps are constant, only change step 1)
The mesh number of middle sieve, because the mesh number of sieve changes, therefore the particle diameter of obtained sample particle is also different.Such as：The mesh of sieve
Number is respectively 10 mesh (1700 μm), 20 mesh (830 μm), 40 mesh (380 μm), 60 mesh (250 μm), 80 mesh (180 μm), 100 mesh
(150 μm) and 400 mesh (38 μm).
Fig. 2 is the electrical conductivity subduplicate change curve over time of different solutions, in ion diffusion process, mixed liquor
Electrical conductivity is all to increase over time since initial conductivity and increase.The slope of curve reflects ion diffusion rates, conductance
Rate slope of a curve is higher, and ion diffusion rates are bigger.For the particulate samples of 6 mesh, initial stage, ion diffusion rates were higher,
A stationary value is slowly reduced to therewith.This is mainly relevant with shale development microcrack, and microcrack can greatly improve rock page
Grain initial stage ion diffusion rates.With the increase of sieve mesh number or the reduction of shale grain diameter, the electricity of sample mixed liquor
Conductance curve gradually shows linear feature, illustrates that microcrack quantity gradually decreases in sample；When sieve mesh number is more than 80 mesh,
Conductance profile, which becomes, to be in line, and illustrates that the microcrack in shale particle is wholly absent, and starts the feature that d reveals matrix pores.Cause
This, microcrack is primarily present on the yardstick more than 180 μm (80 mesh), i.e., the boundary in crack and matrix is 80 mesh.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, all embodiments can not be exhaustive here, it is every to belong to this hair
Row of the obvious changes or variations that bright technical scheme is extended out still in protection scope of the present invention.
Claims (10)
- A kind of 1. device for distinguishing shale reservoir matrix pores and microcrack, it is characterised in that includingTemperature control unit, for controlling the constant of experimentation temperature；Including thermostatic chamber, and it is arranged in the thermostatic chamber Thermostat and temperature sensor；Measuring ion unit, including in the thermostat and the closed container of sample mixed liquor is filled, and described in measurement The conductivity gauge of sample mixed liquor electrical conductivity；The temperature sensor is located in the closed container；Level control unit, it is arranged in the thermostat, for adjusting the volume of sample mixed liquor in the closed container, bag The graded tube for being connected to the closed container lower end is included, and is arranged on the filter of the graded tube and the closed container junction Net；Analysis controlling unit, it is arranged on outside the thermostatic chamber, for handling the data of the conductivity gauge and the temperature sensor, So that user obtains experimental result.
- 2. device according to claim 1, it is characterised in that distinguish the lower end of the conductivity gauge and the temperature sensor Through the top of the closed container and stretch into the sample mixed liquor, upper end extends respectively to outside closed container and by leading Line connects the analysis controlling unit.
- 3. device according to claim 1, it is characterised in that be provided with the closed container and mixed for stirred sample The magnetic stirring apparatus of liquid.
- 4. device according to claim 1, it is characterised in that the temperature of the thermostatic chamber is 0 DEG C~80 DEG C, and the perseverance Warm groove is identical with the constant temperature room temperature.
- 5. device according to claim 1, it is characterised in that the volume of the closed container is 200-300mL.
- 6. a kind of method using the device that shale reservoir matrix pores and microcrack are distinguished as described in claim 1 to 5 is any, It is characterised in that it includes following steps：1) shale samples are ground into particle, then the particle is sieved with different sieves, obtains the sample of different-grain diameter Product particle；2) sample particle of the different-grain diameter is respectively dried, its quality is no longer changed；3) a certain the particle diameter sample particle and water after drying are separately added into the differentiation shale reservoir matrix pores and microcrack Experimental provision closed container in, obtain sample mixed liquor；Electrical conductivity lower end is stretched into the sample mixed liquor, and with it is closed The bottom of container keeps 4-10cm distance；4) open magnetic stirring apparatus to be stirred, then the initial conductivity of determination sample mixed liquor；5) magnetic stirring apparatus is closed, sample mixed liquor electrical conductivity is recorded after sample mixed liquor is static and is changed with time, and Sample mixed liquor electrical conductivity is drawn with time subduplicate change curve；6) repeat step 3), 4) and 5), until completing the measurement of all different-grain diameter sample particles.
- 7. according to the method for claim 6, it is characterised in that in step 1), the sieve is the sieve of 6-400 mesh.
- 8. according to the method for claim 6, it is characterised in that in step 3), the quality of the sample particle is 5-15g, The mass ratio of the water and sample particle is：1:10-50.
- 9. according to the method for claim 6, it is characterised in that in step 4), the mixing time is 2-10min.
- 10. according to the method for claim 6, it is characterised in that in step 2), the temperature of the drying is 100-120 DEG C.
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| CN201710631907.1A CN107402169B (en) | 2017-07-28 | 2017-07-28 | A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack |
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| CN201710631907.1A CN107402169B (en) | 2017-07-28 | 2017-07-28 | A kind of devices and methods therefor for distinguishing shale reservoir matrix pores and microcrack |
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| CN107402169B CN107402169B (en) | 2019-09-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088874A (en) * | 2017-12-12 | 2018-05-29 | 西南石油大学 | A kind of leaching method of black shale soluble salt |
| CN110320243A (en) * | 2019-07-02 | 2019-10-11 | 西安石油大学 | A kind of method and apparatus of full-automatic measurement compact reservoir salinity Evolution |
| CN110470575A (en) * | 2019-09-04 | 2019-11-19 | 西南石油大学 | A kind of shale salt ion diffusivity experimental test procedures |
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| CN106501151A (en) * | 2016-10-25 | 2017-03-15 | 中国科学院力学研究所 | A kind of shale aperture measurement device and method based on imbibition and ion diffusion property |
| CN106644875A (en) * | 2016-10-11 | 2017-05-10 | 中国科学院力学研究所 | Shale capillary pressure and water saturation measurement method |
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| CN106644875A (en) * | 2016-10-11 | 2017-05-10 | 中国科学院力学研究所 | Shale capillary pressure and water saturation measurement method |
| CN106501151A (en) * | 2016-10-25 | 2017-03-15 | 中国科学院力学研究所 | A kind of shale aperture measurement device and method based on imbibition and ion diffusion property |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088874A (en) * | 2017-12-12 | 2018-05-29 | 西南石油大学 | A kind of leaching method of black shale soluble salt |
| CN110320243A (en) * | 2019-07-02 | 2019-10-11 | 西安石油大学 | A kind of method and apparatus of full-automatic measurement compact reservoir salinity Evolution |
| CN110320243B (en) * | 2019-07-02 | 2022-02-15 | 西安石油大学 | Method and device for full-automatically determining evolution law of mineralization degree of compact reservoir |
| CN110470575A (en) * | 2019-09-04 | 2019-11-19 | 西南石油大学 | A kind of shale salt ion diffusivity experimental test procedures |
| CN110470575B (en) * | 2019-09-04 | 2020-09-18 | 西南石油大学 | Shale salt ion diffusion capacity experimental test method |
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| Publication number | Publication date |
|---|---|
| CN107402169B (en) | 2019-09-06 |
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