CN108412469A - A kind of fill out sand tube and preparation method thereof and Reservoir Seepage analogy method - Google Patents
A kind of fill out sand tube and preparation method thereof and Reservoir Seepage analogy method Download PDFInfo
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- 239000004576 sand Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 319
- 239000011707 mineral Substances 0.000 claims abstract description 319
- 239000011435 rock Substances 0.000 claims abstract description 147
- 239000002245 particle Substances 0.000 claims abstract description 27
- 238000004458 analytical method Methods 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims description 49
- 238000002474 experimental method Methods 0.000 claims description 31
- 238000004088 simulation Methods 0.000 claims description 27
- 238000011084 recovery Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 244000005700 microbiome Species 0.000 claims description 11
- 239000010779 crude oil Substances 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 239000008398 formation water Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims 3
- 238000003825 pressing Methods 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 128
- 239000010433 feldspar Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 13
- 229910001919 chlorite Inorganic materials 0.000 description 12
- 229910052619 chlorite group Inorganic materials 0.000 description 12
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 12
- 239000010445 mica Substances 0.000 description 12
- 229910052618 mica group Inorganic materials 0.000 description 12
- 239000010453 quartz Substances 0.000 description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 9
- 229910052622 kaolinite Inorganic materials 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 238000009826 distribution Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- -1 hydromica Inorganic materials 0.000 description 6
- 230000035699 permeability Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000013401 experimental design Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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Abstract
The present invention provides a kind of fill out sand tube and preparation method thereof and Reservoir Seepage analogy method.The preparation method includes：Reservoir geology data is obtained, the mass fraction of contained mineral under the conditions of the rock core mineral, the percentage by volume of each rock core mineral and the particle size range of reservoir Minerals and each grain size in analysis acquisition reservoir；The artificial core mineral of replacement are ground into particle, and are sieved by grain diameter, it is spare；Quality dosage of each rock core mineral under the conditions of each grain size is calculated by formula (1), alternatively, calculating volumetric usage of each rock core mineral under the conditions of each grain size by formula (2)：Artificial core mineral are mixed by the dosage under the conditions of formula (1) or each grain size of formula (2) calculating, back-up sand pipe device is then added, fill out sand tube is made after compacting.
Description
Technical field
This specification belongs to oil-gas field development technical field, is related to a kind of fill out sand tube and preparation method thereof and Reservoir Seepage mould
Quasi- method.
Background technology
Currently, in the research of oilfield exploitation procedure, Reservoir Seepage simulation system is widely applied to be tested, research is driven
Reservoir Dynamic variation during replacing or handling up, oil recovery media variations, oil recovery mechanism, reservoir damage mechanism, remaining oil distribution
Situation and evaluation development effectiveness.Fill out sand tube is widely used as a kind of common reservoir model during this simulated experiment,
Its advantage is that simple and convenient and may be reused.
Under the guiding theory of the true reservoir conditions of simplification, the preparation of conventional fill out sand tube generally primarily focuses on simulation reservoir
Mineral composition, and in most cases use quartz sand padding and compacting be made fill out sand tube, then further simulation porous Jie of reservoir
Matter is tested.But this back-up sand method is made fill out sand tube and not only can not achieve the mould to the true pore throat special case of reservoir
It is quasi-；And it is impossible to meet the demands for the Seepage Experiment for transforming target as a long time with reservoir pore throat mineral, than back-up sand as described above
It is the acid-producing microorganisms raising oil recovery for acting on target that fill out sand tube made from method, which cannot meet simulation with carbonate mineral,
(EOR) needs tested, it is the needs that the silicate bacteria EOR of object is transformed and tests that can not meet simulation with silicate mineral；
In addition, different from the reservoir damage evaluation experimental carried out using true core；Since fill out sand tube made from above-mentioned embankment method stores up
The Seepage Experiment of layer model is only by the back-up sand in fill out sand tube as a kind of porous media, if stored up using this fill out sand tube
The simulated experiment of layer seepage flow is equivalent to give tacit consent to the oil recovery medium in injection fill out sand tube and phase interaction is not present with rock forming mineral
With also just concern caused may be increased less than in practical recovery process by the interaction institute between injected media and rock forming mineral
It produces or to reservoir damage.
Therefore, it is badly in need of a kind of new back-up sand method of offer at present utmostly to simulate space and the object of reservoir porous
Matter situation meets the needs of Reservoir Seepage simulated experiment.
Invention content
The shortcomings that in view of the above-mentioned prior art, this specification be designed to provide a kind of fill out sand tube and preparation method thereof with
Reservoir Seepage analogy method.The fill out sand tube can effectively simulate porous media space and the rock core mineral composition of reservoir.
In order to reach goal of the invention above-mentioned, this specification provides a kind of preparation method of fill out sand tube comprising following step
Suddenly：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the body of each rock core mineral in reservoir
Product percentage；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size
Under the conditions of contained mineral mass fraction；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and
It is sieved by grain diameter, it is spare；
Step 4：Quality dosage of each artificial core mineral under the conditions of each grain size is calculated by formula (1)；
In the formula (1), mijIt indicates in artificial core, grain size is the quality dosage of the artificial core mineral i of j, unit
For g；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit
For g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube dress used by V is indicated
The volume set, unit cm3；
Step 5：The artificial core mineral are mixed by the quality dosage under the conditions of each grain size of step 4 calculating
It is even, back-up sand pipe device is then added, fill out sand tube is made after compacting.
The present invention also provides a kind of preparation methods of fill out sand tube comprising following steps：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the body of each rock core mineral in reservoir
Product percentage；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size
Under the conditions of contained mineral mass fraction；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and
It is sieved by grain diameter, it is spare；
Step 4：Volumetric usage of each artificial core mineral under the conditions of each grain size is calculated by formula (2)；
In the formula (2), VijIt indicates in artificial core, grain size is the volumetric usage of the artificial core mineral i of j, unit
For cm3；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, it is single
Position is g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube used by V is indicated
The volume of device, unit cm3；
Step 5：The artificial core mineral are mixed by the volumetric usage under the conditions of each grain size of step 4 calculating
It is even, back-up sand pipe device is then added, fill out sand tube is made after compacting.
This specification also provides a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the body of each rock core mineral in reservoir
Product percentage；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size
Under the conditions of contained mineral mass fraction；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and
It is sieved by grain diameter, it is spare；
Step 4：Quality dosage of each artificial core mineral under the conditions of each grain size is calculated by formula (1), alternatively, by public affairs
Formula (2) calculates volumetric usage of each artificial core mineral under the conditions of each grain size；
In the formula (1), mijIt indicates in artificial core, grain size is the quality dosage of the artificial core mineral i of j, unit
For g；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit
For g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube dress used by V is indicated
The volume set, unit cm3；
In the formula (2), VijIt indicates in artificial core, grain size is the volumetric usage of the artificial core mineral i of j, unit
For cm3；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, it is single
Position is g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube used by V is indicated
The volume of device, unit cm3；
Step 5：By the artificial core mineral by the quality dosage or volume use under the conditions of each grain size of step 4 calculating
Amount is uniformly mixed, and back-up sand pipe device is then added, and fill out sand tube is made after compacting.
According to the specific embodiment of this specification, in the step 5, using a variety of methods such as jarring, pressurization into being about to fill out
Rock core mineral grain is compacted in sand pipe device.
According to the specific embodiment of this specification, it is preferable that the inner wall of the back-up sand pipe device carries out inertization, makes it
Not under formation temperature and strata pressure with any one of simulated formation water, crude oil or injected media or several make a difference
The reaction of Seepage Experiment result.The inner wall that the inertization is included in the back-up sand pipe device carries out cladding or coating processing,
Make back-up sand pipe device not under formation temperature and strata pressure with any one of simulated formation water, crude oil or injected media or
The reactions such as the acid etching of several Seepage Experiment results that make a difference.
The preparation method for the fill out sand tube that this specification provides is consider rock core mineral composition while, it is also contemplated that rock core mine
The influence of object grain size, but since reservoir is mixed by the multi mineral of different-grain diameter, it is difficult to confirm a certain mineral
Particle diameter distribution situation, this specification by by the volume-fraction scaled of rock core mineral in reservoir at mass fraction again press grain size matter
Amount score seeks the quality dosage under all rock core mineral different-grain diameters or volumetric usage, avoids different-grain diameter rock core mineral and exists
The volume deviation generated by hole difference when cubing.
This specification also provide a kind of fill out sand tube its be to be made by the preparation method of above-mentioned fill out sand tube.
According to the specific embodiment of this specification, it is preferable that in the fill out sand tube, the grain size of each artificial core mineral is
0.01-1000.0μm。
According to the specific embodiment of this specification, it is preferable that in the fill out sand tube, the grain size of each artificial core mineral includes
0.01 μm, 0.10 μm, 0.50 μm, 1.00 μm, 3.00 μm, 5.00 μm, 7.00 μm, 9.00 μm, 10.00 μm, 20.00 μm, 40 μm,
60 μm, 80 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 900 μm and 1000 μm.
According to the specific embodiment of this specification, it is preferable that in the fill out sand tube, each artificial core mineral is in each grain size
Under the conditions of mass content QijFor 85%mij- 115%mij,
Wherein, QijIt indicates in fill out sand tube, grain size is the actual mass of the artificial core mineral i of j, unit g.
According to the specific embodiment of this specification, it is preferable that in the fill out sand tube, each artificial core mineral is in each grain size
Under the conditions of volume TijFor 85%Vij- 115%Vij,
Wherein, TijIt indicates in fill out sand tube, grain size is the actual volume of the artificial core mineral i of j, unit cm3。
The composition for the fill out sand tube comprehensive consideration rock core mineral of reservoir that this specification provides and granularmetric composition, and only use
The unassorted quartz sand padding and compacting of grain size is made fill out sand tube and compares, and the fill out sand tube that this specification provides is in existing fill out sand tube reservoir
On the basis of model seepage simulation test, fill out sand tube reservoir model is further increased to reservoir porous space and rock core mineral
The reduction degree of substance disclosure satisfy that height of the Reservoir Seepage simulated experiment process to the space and rock core mineral materials of porous media
It is required that with accurate simulation, fluid under real simulation reservoir conditions, injected media and rock forming mineral interaction are really realized.
This specification also provides a kind of Reservoir Seepage analogy method, and above-mentioned fill out sand tube is used to carry out seepage simulation.
According to the specific embodiment of this specification, it is preferable that the Reservoir Seepage analogy method includes by simulated formation water
The step of injecting the fill out sand tube with Simulation of Crude Oil makes the fill out sand tube reach moisture content and oil content needed for experiment；
Then oil recovery medium is injected into the fill out sand tube, and Reservoir Seepage simulation is carried out under the oil production method of setting.
According to the specific embodiment of this specification, it is preferable that the Seepage Experiment further includes that will test the front and back back-up sand
The step of water phase, oil phase, oil recovery medium, rock core mineral and seepage flow performance parameter in pipe compare and analyze.It is obtained according to analysis
The data obtained, can characterize the case where interacting between the oil recovery medium of injection and rock core mineral.
According to the specific embodiment of this specification, it is preferable that the oil recovery medium includes but not limited to acid, alkali, gas, table
The combination of one or more of face activating agent, polymer, microorganism.
According to the specific embodiment of this specification, it is preferable that the oil production method includes displacement or handles up.
The fill out sand tube that this specification provides has fully considered the constituent and size distribution of rock core mineral, therefore, this theory
The fill out sand tube that bright book provides can not only simulate reservoir rock mineral composition, additionally it is possible to simulate the particle size point of reservoir rock
Cloth, the case where largely simulating space and the rock core mineral materials of reservoir porous, meet Reservoir Seepage simulation
The basic need of experiment.
Compared with prior art, the advantageous effect of this specification is：
(1) preparation method for the fill out sand tube that this specification provides is consider rock core mineral composition while, it is also contemplated that rock
The influence of heart particle size, by the quality that the volume-fraction scaled of rock core mineral in reservoir is pressed to grain size again at mass fraction
Score seeks the quality dosage under all rock core mineral different-grain diameters or volumetric usage, avoids different-grain diameter rock core mineral in body
The volume deviation generated by hole difference when product measures.
(2) fill out sand tube that this specification provides is on the basis of existing fill out sand tube reservoir model seepage simulation test, into one
Step improves fill out sand tube reservoir model to the reduction degree in reservoir porous space and rock core mineral materials, disclosure satisfy that Reservoir Seepage
Simulated experiment process really realizes true mould to the space of porous media and the requirement for height of rock core mineral materials and accurate simulation
Fluid, injected media and rock forming mineral interact under quasi- reservoir conditions.
Description of the drawings
Fig. 1 is the grading curve figure for the oil reservoir Study In Reservoir Minerals composition that embodiment 1 provides.
Specific implementation mode
In order to which the technical characteristic of this specification, purpose and advantageous effect are more clearly understood, now to this specification
Technical solution carry out it is described further below, but should not be understood as to this specification can practical range restriction.
Embodiment 1
Present embodiments provide a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Using the geologic information of oil reservoir, the rock core mineral composition to the reservoir to be studied of oil reservoir and mineral particle
Degree is analyzed, and analysis result is as shown in table 1 and Fig. 1, wherein table 1 is the rock core mineral of the oil reservoir and each rock core mineral
Percentage by volume statistical form in oil reservoir, Fig. 1 are the grading curve figure of oil reservoir Minerals composition.By table
1 it is found that the rock core mineral in the oil reservoir include feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica
With it is siliceous, wherein the volume fraction of feldspar reaches 50.4%, and quartzy volume fraction reaches 22.86%, is the master of oil reservoir
Want ingredient.It is determined that the rock core mineral of fill out sand tube are feldspar, quartz, kaolinite, ferrocalcite, chlorite, water cloud according to table 1
Female, mica and siliceous.
Step 2：According to the geologic information of the oil reservoir, the particle diameter distribution of Reservoir Minerals as shown in Figure 1 should in analysis chart 1
The grain size of reservoir Minerals is mainly distributed between 0.10-1000.00 μm, to the grading curve readings of Fig. 1, it is determined that storage
The grain size value and mass content of layer mineral, the results are shown in Table 2 for readings, wherein the mineral content that grain size is 0.1 μm is reservoir
The 0.5% of mineral gross mass, the mineral content that grain size is 0.5 μm are the 1.6% of Reservoir Minerals gross mass, and grain size is 1.00 μm
Mineral content is the 3.8% of Reservoir Minerals gross mass, and the mineral content that grain size is 3.00 μm is Reservoir Minerals gross mass
7.0%, the mineral content that grain size is 5.00 μm is the 8.5% of Reservoir Minerals gross mass, and grain size is that 7.00 μm of mineral content is
The 9.5% of Reservoir Minerals gross mass, the mineral content that grain size is 9.00 μm are the 10.9% of Reservoir Minerals gross mass, and grain size is
10.00 μm of mineral content is the 11.0% of Reservoir Minerals gross mass, and the mineral content that grain size is 20.00 μm is that Reservoir Minerals are total
The 9.9% of quality, the mineral content that grain size is 40.00 μm are the 8.5% of Reservoir Minerals gross mass, the mine that grain size is 60.00 μm
Object content is the 7.0% of Reservoir Minerals gross mass, and the mineral content that grain size is 80.00 μm is the 8.2% of Reservoir Minerals gross mass,
The mineral content that grain size is 100.00 μm is the 5.5% of Reservoir Minerals gross mass, and the mineral content that grain size is 200.00 μm is storage
The 4.5% of layer mineral gross mass, the mineral content that grain size is 400.00 μm is the 1.2% of Reservoir Minerals gross mass, and grain size is
600.00 μm of mineral content is the 0.9% of Reservoir Minerals gross mass, and the mineral content that grain size is 800.00 μm is Reservoir Minerals
The 0.8% of gross mass, the mineral content that grain size is 900.00 μm are the 0.5% of Reservoir Minerals gross mass, and grain size is 1000.00 μm
Mineral content be Reservoir Minerals gross mass 0.2%.
Step 3：The particle size that the rock core mineral and step 2 obtained according to step 1 determine, by the artificial rock of fill out sand tube
Heart mineral feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica and it is siliceous be ground into particle, and by each people
Lithogenesis heart mineral by grain size sieve, be sieved into grain size be 0.10 μm, 0.50 μm, 1.00 μm, 3.00 μm, 5.00 μm, 7.00 μm,
9.00 μm, 10.00 μm, 20.00 μm, 40 μm, 60 μm, 80 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 900 μm and
1000 μm of raw material for standby；
Step 4：Quality dosage of each fill out sand tube artificial core mineral under the conditions of each grain size is calculated by formula (1)；
In formula (1), mijIt indicates in fill out sand tube, grain size is the quality dosage of the artificial core mineral i of j, unit g；
Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in fill out sand tube, unit g/cm3；
wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；The appearance of back-up sand pipe device used by V is indicated
Product, unit cm3；
Wherein, the value range of grain size j be 0.10 μm, 0.50 μm, 1.00 μm, 3.00 μm, 5.00 μm, 7.00 μm, 9.00 μ
M, 10.00 μm, 20.00 μm, 40 μm, 60 μm, 80 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 900 μm and 1000 μm,
Artificial core mineral i selected from feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica and it is siliceous in any
Kind, according to the record of table 1, the volume fraction of each rock core mineral iIt is as follows successively：The volume fraction of feldspar is 50.40%, quartz
Volume fraction be 22.86%, kaolinic volume fraction is 0.6%, and the volume fraction of ferrocalcite is 6.13%, chlorite
Volume fraction be 4.8%, the volume fraction of hydromica is 3.42%, and the volume fraction of mica is 11.39%, siliceous volume
Score is 0.40%, can be inquired according to oil reservoir data, the density p of each artificial core mineral iiIt is as follows successively：Feldspar it is close
Degree is 2.75g/cm3, quartzy density is 2.65g/cm3, kaolinic density is 2.50g/cm3, the density of ferrocalcite is
2.75g/cm3, the density of chlorite is 3.60g/cm3, the density of hydromica is 2.85g/cm3, the density of mica is 2.95g/
cm3, siliceous density is 2.20g/cm3；According to the record of Fig. 1 and table 2, rock core mineral divide in the quality of grain size j under reservoir conditions
Number is as follows, and grain size is that 0.10 μm of rock core mineral account for the 0.5% of reservoir core mineral gross mass, i.e., the rock core that grain size is 0.10 μm
The mass fraction of mineral is 0.5%, and the mass fraction for the rock core mineral that grain size is 0.50 μm is 1.6%, and grain size is 1.00 μm
The mass fraction of rock core mineral is 3.8%, and the mass fraction for the rock core mineral that grain size is 3.00 μm is 7.0%, and grain size is 5.00 μ
The mass fraction of the rock core mineral of m is 8.5%, and the mass fraction for the rock core mineral that grain size is 7.00 μm is 9.5%, and grain size is
The mass fraction of 9.00 μm of rock core mineral is 10.9%, and the mass fraction for the rock core mineral that grain size is 10.00 μm is 11.0%,
The mass fraction for the rock core mineral that grain size is 20.00 μm is 9.9%, and the mass fraction for the rock core mineral that grain size is 40 μm is
8.5%, the mass fraction for the rock core mineral that grain size is 60 μm is 7.0%, and the mass fraction for the rock core mineral that grain size is 80 μm is
8.2%, the mass fraction for the rock core mineral that grain size is 100 μm is 5.5%, the mass fraction for the rock core mineral that grain size is 200 μm
It is 4.5%, the mass fraction for the rock core mineral that grain size is 400 μm is 1.2%, the quality point for the rock core mineral that grain size is 600 μm
Number is 1.2%, and the mass fraction for the rock core mineral that grain size is 600 μm is 0.9%, the quality for the rock core mineral that grain size is 800 μm
Score is 0.8%, and the mass fraction for the rock core mineral that grain size is 900 μm is 0.5%, the matter for the rock core mineral that grain size is 1000 μm
It is 0.2% to measure score.
The volume of the volume for the back-up sand pipe device that this embodiment uses is 906.8cm3,
Above-mentioned each parameter substituted into formula (1) successively, calculates and obtains each artificial core mineral under the conditions of each grain size
Quality dosage, result of calculation are as shown in table 3；
Step 5：The inner wall of back-up sand pipe device is subjected to coating processing, make its not under the temperature and pressure of stratum with simulated formation water,
Crude oil or injected media make a difference Seepage Experiment result acid etching reaction, then according to each artificial core mineral in table 3
Dosage under the conditions of each grain size is weighed, and is fitted into after being thoroughly mixed in back-up sand pipe device, more using jarring, pressurization etc.
Kind method is compacted into the artificial core mineral grain being about in fill out sand tube device, and fill out sand tube is made after compacting.
Table 1
| Mineral number (i) | Mineral | Volume fraction/% |
| 1 | Feldspar | 50.40 |
| 2 | Quartz | 22.86 |
| 3 | Kaolinite | 0.60 |
| 4 | Ferrocalcite | 6.13 |
| 5 | Chlorite | 4.80 |
| 6 | Hydromica | 3.42 |
| 7 | Mica | 11.39 |
| 8 | It is siliceous | 0.40 |
Table 2
Table 3
The present embodiment also uses fill out sand tube made from the present embodiment to carry out Seepage Experiment：
Filling (∑ m is amounted in the fill out sand tube that a diameter of 3.8cm length made from the present embodiment is 80.0cmij)
2530.37g artificial core mineral, using a variety of methods such as jarring, pressurization into the artificial core mineral being about in fill out sand tube device
Particle is compacted, and deionized water is used to carry out fill out sand tube permeability survey according to Darcy formula as displacing medium later.Tool
Body step is：Simulated formation water is injected in above-mentioned fill out sand tube, water saturation operation is carried out, Simulation of Crude Oil is then injected into the back-up sand
Guan Zhong further carries out saturated oils operation, and requires control fill out sand tube moisture content and oil content according to experimental design, makes fill out sand tube
Reach the moisture content and oil content needed for experiment；
Oil recovery medium, including acid, alkali, gas, surfactant, polymer, microorganism etc. are injected into fill out sand tube, one
Determine under mode (displacement is handled up) and carry out Seepage Experiment, and water phase, oil phase, injection are situated between in the front and back fill out sand tube of comprehensive analysis experiment
The relevant parameters such as matter, mineral and seepage flow performance change, to characterize the case where interacting between injected media and rock core mineral.
Fill out sand tube Seepage Experiment data made from the present embodiment are as shown in table 4, closed according to pressure difference shown in table 4 and flow
System, in conjunction with Darcy formula, can be calculated the fill out sand tube permeability is 560mD.
Table 4
Table is noted：Darcy formulaMiddle section product A takes 11.3354cm2；Fluid viscosity μ takes 1mPas；Cylinder
Length takes 80cm.
Silicate microorganism huff and puff seepage simulation test is carried out using fill out sand tube made from the present embodiment, is observed because of microorganism
With the caused recovery ratio increase of rock forming mineral effect and to the transformation degree of pore throat.Experimental result is shown in Table shown in 5：
Table 5
| Before experiment (water drive) | After microorganism huff and puff experiment | Change degree | |
| Permeability | 560mD | 595mD | + 6.25% |
| Recovery ratio | 36.0% | 41.7% | + 5.70% |
| Mineral gross mass | 2530.37g | 2506.58g | - 0.94% |
| Produced Liquid conductivity | 77μS/cm | 523μS/cm | + 579.22% |
| Produced Liquid salinity | 14mg/L | 131mg/L | + 837.71% |
By the present embodiment it is found that fill out sand tube provided in this embodiment has fully considered the constituent and granularity of rock core mineral
Therefore, the fill out sand tube of the present embodiment can not only simulate reservoir rock mineral composition, additionally it is possible to simulate the mine of reservoir rock for distribution
Object particle diameter distribution, meets reservoir at the case where farthest simulating space and the rock core mineral materials of reservoir porous
The basic need of seepage simulation test.
Embodiment 2
Present embodiments provide a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Using the geologic information of oil reservoir, the rock core mineral composition to the reservoir to be studied of oil reservoir and mineral particle
Degree is analyzed, and analysis result is as shown in table 1 and Fig. 1, wherein table 1 is the rock core mineral of the oil reservoir and each rock core mineral
Percentage by volume statistical form in oil reservoir, Fig. 1 are the grading curve figure of oil reservoir Minerals composition.By table
1 it is found that the rock core mineral in the oil reservoir include feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica
With it is siliceous, wherein the volume fraction of feldspar reaches 50.4%, and quartzy volume fraction reaches 22.86%, is the master of oil reservoir
Want ingredient.It is determined that the rock core mineral of fill out sand tube are feldspar, quartz, kaolinite, ferrocalcite, chlorite, water cloud according to table 1
Female, mica and siliceous.
Step 2：According to the geologic information of the oil reservoir, the particle diameter distribution of Reservoir Minerals as shown in Figure 1 should in analysis chart 1
The grain size of reservoir Minerals is mainly distributed between 0.10-1000.00 μm, to the grading curve readings of Fig. 1, it is determined that storage
The grain size value and mass content of layer mineral, the results are shown in Table 2 for readings, wherein the mineral content that grain size is 0.1 μm is reservoir
The 0.5% of mineral gross mass, the mineral content that grain size is 0.5 μm are the 1.6% of Reservoir Minerals gross mass, and grain size is 1.00 μm
Mineral content is the 3.8% of Reservoir Minerals gross mass, and the mineral content that grain size is 3.00 μm is Reservoir Minerals gross mass
7.0%, the mineral content that grain size is 5.00 μm is the 8.5% of Reservoir Minerals gross mass, and grain size is that 7.00 μm of mineral content is
The 9.5% of Reservoir Minerals gross mass, the mineral content that grain size is 9.00 μm are the 10.9% of Reservoir Minerals gross mass, and grain size is
10.00 μm of mineral content is the 11.0% of Reservoir Minerals gross mass, and the mineral content that grain size is 20.00 μm is that Reservoir Minerals are total
The 9.9% of quality, the mineral content that grain size is 40.00 μm are the 8.5% of Reservoir Minerals gross mass, the mine that grain size is 60.00 μm
Object content is the 7.0% of Reservoir Minerals gross mass, and the mineral content that grain size is 80.00 μm is the 8.2% of Reservoir Minerals gross mass,
The mineral content that grain size is 100.00 μm is the 5.5% of Reservoir Minerals gross mass, and the mineral content that grain size is 200.00 μm is storage
The 4.5% of layer mineral gross mass, the mineral content that grain size is 400.00 μm is the 1.2% of Reservoir Minerals gross mass, and grain size is
600.00 μm of mineral content is the 0.9% of Reservoir Minerals gross mass, and the mineral content that grain size is 800.00 μm is Reservoir Minerals
The 0.8% of gross mass, the mineral content that grain size is 900.00 μm are the 0.5% of Reservoir Minerals gross mass, and grain size is 1000.00 μm
Mineral content be Reservoir Minerals gross mass 0.2%.
Step 3：The particle size that the rock core mineral and step 2 obtained according to step 1 determine, by the artificial rock of fill out sand tube
Heart mineral feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica and it is siliceous be ground into particle, and by each people
Lithogenesis heart mineral by grain size sieve, be sieved into grain size be 0.10 μm, 0.50 μm, 1.00 μm, 3.00 μm, 5.00 μm, 7.00 μm,
9.00 μm, 10.00 μm, 20.00 μm, 40 μm, 60 μm, 80 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 900 μm and
1000 μm of raw material for standby；
Step 4：Volumetric usage of each fill out sand tube artificial core mineral under the conditions of each grain size is calculated by formula (2)；
In formula (2), VijIt indicates in fill out sand tube, grain size is the volumetric usage of the artificial core mineral i of j, unit cm3；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in fill out sand tube, unit g/
cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Back-up sand pipe device used by V is indicated
Volume, unit cm3；
Wherein, the value range of grain size j be 0.10 μm, 0.50 μm, 1.00 μm, 3.00 μm, 5.00 μm, 7.00 μm, 9.00 μ
M, 10.00 μm, 20.00 μm, 40 μm, 60 μm, 80 μm, 100 μm, 200 μm, 400 μm, 600 μm, 800 μm, 900 μm and 1000 μm,
Artificial core mineral i selected from feldspar, quartz, kaolinite, ferrocalcite, chlorite, hydromica, mica and it is siliceous in any
Kind, according to the record of table 1, the volume fraction of each rock core mineral iIt is as follows successively：The volume fraction of feldspar is 50.40%, quartz
Volume fraction be 22.86%, kaolinic volume fraction is 0.6%, and the volume fraction of ferrocalcite is 6.13%, chlorite
Volume fraction be 4.8%, the volume fraction of hydromica is 3.42%, and the volume fraction of mica is 11.39%, siliceous volume
Score is 0.40%, can be inquired according to oil reservoir data,；According to the record of Fig. 1 and table 2, rock core mineral exist under reservoir conditions
The mass fraction of grain size j is as follows, and grain size is that 0.10 μm of rock core mineral account for the 0.5% of reservoir core mineral gross mass, i.e. grain size
Mass fraction for 0.10 μm of rock core mineral is 0.5%, and the mass fraction for the rock core mineral that grain size is 0.50 μm is 1.6%,
The mass fraction for the rock core mineral that grain size is 1.00 μm is 3.8%, and the mass fraction for the rock core mineral that grain size is 3.00 μm is
7.0%, the mass fraction for the rock core mineral that grain size is 5.00 μm is 8.5%, the quality point for the rock core mineral that grain size is 7.00 μm
Number is 9.5%, and the mass fraction for the rock core mineral that grain size is 9.00 μm is 10.9%, the rock core mineral that grain size is 10.00 μm
Mass fraction is 11.0%, and the mass fraction for the rock core mineral that grain size is 20.00 μm is 9.9%, the rock core mine that grain size is 40 μm
The mass fraction of object is 8.5%, and the mass fraction for the rock core mineral that grain size is 60 μm is 7.0%, the rock core mine that grain size is 80 μm
The mass fraction of object is 8.2%, and the mass fraction for the rock core mineral that grain size is 100 μm is 5.5%, the rock core that grain size is 200 μm
The mass fraction of mineral is 4.5%, and the mass fraction for the rock core mineral that grain size is 400 μm is 1.2%, the rock that grain size is 600 μm
The mass fraction of heart mineral is 1.2%, and the mass fraction for the rock core mineral that grain size is 600 μm is 0.9%, and grain size is 800 μm
The mass fraction of rock core mineral is 0.8%, and the mass fraction for the rock core mineral that grain size is 900 μm is 0.5%, and grain size is 1000 μm
Rock core mineral mass fraction be 0.2%.
The volume for the back-up sand pipe device that this embodiment uses is 906.8cm3,
Above-mentioned each parameter substituted into formula (2) successively, calculates and obtains each artificial core mineral under the conditions of each grain size
Volumetric usage, result of calculation are as shown in table 6；
Step 5：The inner wall of back-up sand pipe device is subjected to special coating processing, make its not under the temperature and pressure of stratum with simulation ground
Layer water, crude oil or injected media make a difference the reactions such as acid etching of Seepage Experiment result, then according to each artificial rock in table 6
Dosage of heart mineral under the conditions of each grain size is weighed, and is fitted into after being thoroughly mixed in back-up sand pipe device, using jarring, is added
A variety of methods such as pressure are compacted into artificial core mineral grain in fill out sand tube device is about to, and fill out sand tube is made after compacting.
Table 6
The present embodiment also uses fill out sand tube made from the present embodiment to carry out Seepage Experiment：
A diameter of 3.8cm length made from the present embodiment be 80.0cm fill out sand tube in, it is a variety of using jarring, pressurization etc.
Method is compacted into the artificial core mineral grain being about in fill out sand tube device, uses deionized water as displacing medium later
Fill out sand tube permeability survey is carried out according to Darcy formula.The specific steps are：Simulated formation water is injected in above-mentioned fill out sand tube, is carried out
Water saturation operates, and then injects Simulation of Crude Oil in the fill out sand tube, further carries out saturated oils operation, and want according to experimental design
Control fill out sand tube moisture content and oil content are asked, fill out sand tube is made to reach moisture content and oil content needed for experiment；
Oil recovery medium, including acid, alkali, gas, surfactant, polymer, microorganism etc. are injected into fill out sand tube, one
Determine under mode (displacement is handled up) and carry out Seepage Experiment, and water phase, oil phase, injection are situated between in the front and back fill out sand tube of comprehensive analysis experiment
The relevant parameters such as matter, mineral and seepage flow performance change, to characterize the case where interacting between injected media and rock core mineral.
Fill out sand tube Seepage Experiment data made from the present embodiment are as shown in table 7, closed according to pressure difference shown in table 7 and flow
System, in conjunction with Darcy formula, can be calculated the fill out sand tube permeability is 560mD.
Table 7
Table is noted：Darcy formulaMiddle section product A takes 11.3354cm2；Fluid viscosity μ takes 1mPas；Cylinder
Length takes 80cm.
Silicate microorganism huff and puff seepage simulation test is carried out using fill out sand tube made from the present embodiment, is observed because of microorganism
With the caused recovery ratio increase of rock forming mineral effect and to the transformation degree of pore throat.Experimental result is shown in Table shown in 8：
Table 8
| Before experiment (water drive) | After microorganism huff and puff experiment | Change degree | |
| Permeability | 560mD | 595mD | + 6.25% |
| Recovery ratio | 36.0% | 41.7% | + 5.70% |
| Mineral gross mass | 2530.37g | 2506.58g | - 0.94% |
| Produced Liquid conductivity | 77μS/cm | 523μS/cm | + 579.22% |
| Produced Liquid salinity | 14mg/L | 131mg/L | + 837.71% |
By the embodiment of this specification it is found that the preparation method for the fill out sand tube that this specification provides is considering rock core mineral group
At while, it is also contemplated that the influence of rock core particle size, by by the volume-fraction scaled of rock core mineral in reservoir at matter
Amount score seeks the quality dosage under all rock core mineral different-grain diameters or volumetric usage by the mass fraction of grain size again, avoids
The volume deviation that different-grain diameter rock core mineral are generated in cubing by hole difference.The fill out sand tube that this specification provides exists
On the basis of existing fill out sand tube reservoir model seepage simulation test, fill out sand tube reservoir model is further increased to reservoir porous
The reduction degree in space and rock core mineral materials disclosure satisfy that space and rock core of the Reservoir Seepage simulated experiment process to porous media
The requirement for height of mineral materials and accurate simulation, really realize fluid, injected media and rock mine under real simulation reservoir conditions
Object interacts.
Claims (10)
1. a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the volume hundred of each rock core mineral in reservoir
Score；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size condition
The mass fraction of lower contained mineral；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and by
Grain grain size screening, it is spare；
Step 4：Quality dosage of each artificial core mineral under the conditions of each grain size is calculated by formula (1)；
In the formula (1), mijIt indicates in artificial core, grain size is the quality dosage of the artificial core mineral i of j, unit g；
Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit g/
cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Back-up sand pipe device used by V is indicated
Volume, unit cm3；
Step 5：Quality dosage under the conditions of each grain size that the artificial core mineral are calculated by step 4 is uniformly mixed, so
Back-up sand pipe device is added afterwards, fill out sand tube is made after compacting.
2. a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the volume hundred of each rock core mineral in reservoir
Score；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size condition
The mass fraction of lower contained mineral；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and by
Grain grain size screening, it is spare；
Step 4：Volumetric usage of each artificial core mineral under the conditions of each grain size is calculated by formula (2)；
In the formula (2), VijIt indicates in artificial core, grain size is the volumetric usage of the artificial core mineral i of j, and unit is
cm3；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit
For g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube dress used by V is indicated
The volume set, unit cm3；
Step 5：Volumetric usage under the conditions of each grain size that the artificial core mineral are calculated by step 4 is uniformly mixed, so
Back-up sand pipe device is added afterwards, fill out sand tube is made after compacting.
3. a kind of preparation method of fill out sand tube comprising following steps：
Step 1：Reservoir geology data is obtained, analysis obtains the type of rock core mineral and the volume hundred of each rock core mineral in reservoir
Score；
Step 2：According to the reservoir geology data, analysis obtains the particle size range of the reservoir Minerals and each grain size condition
The mass fraction of lower contained mineral；
Step 3：According to the rock core mineral that the step 1 obtains, the artificial core mineral of replacement are ground into particle, and by
Grain grain size screening, it is spare；
Step 4：Quality dosage of each artificial core mineral under the conditions of each grain size is calculated by formula (1), alternatively, pressing formula (2)
Calculate volumetric usage of each artificial core mineral under the conditions of each grain size；
In the formula (1), mijIt indicates in artificial core, grain size is the quality dosage of the artificial core mineral i of j, unit g；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit g/
cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Back-up sand pipe device used by V is indicated
Volume, unit cm3；
In the formula (2), VijIt indicates in artificial core, grain size is the volumetric usage of the artificial core mineral i of j, and unit is
cm3；Indicate the percentage by volume of rock core mineral i in reservoir；ρiIndicate the density of artificial core mineral i in artificial core, unit
For g/cm3；wjIndicate that grain size is the mass fraction of contained rock core mineral under the conditions of j in reservoir；Fill out sand tube dress used by V is indicated
The volume set, unit cm3；
Step 5：By under the conditions of each grain size that the artificial core mineral are calculated by step 4 quality dosage or volumetric usage mix
It closes uniformly, back-up sand pipe device is then added, fill out sand tube is made after compacting.
4. according to the preparation method of any one of the claim 1-3 fill out sand tube, it is characterised in that：The preparation side of the fill out sand tube
Method further includes the steps that the inner wall of the back-up sand pipe device is carried out inertization, makes it not under formation temperature and strata pressure
With reacting for any one of simulated formation water, crude oil or injected media or several Seepage Experiment results that make a difference.
5. a kind of fill out sand tube is made by the preparation method of claim 1-4 any one of them fill out sand tube；
Preferably, in the fill out sand tube, the grain size of each artificial core mineral is 0.01-1000.0 μm；
Preferably, in the fill out sand tube, the grain sizes of each artificial core mineral includes 0.01 μm, 0.10 μm, 0.50 μm, 1.00 μm,
3.00 μm, 5.00 μm, 7.00 μm, 9.00 μm, 10.00 μm, 20.00 μm, 40 μm, 60 μm, 80 μm, 100 μm, 200 μm, 400 μm,
600 μm, 800 μm, 900 μm and 1000 μm.
6. fill out sand tube according to claim 5, it is characterised in that：In the fill out sand tube, each artificial core mineral is each
Mass content Q under the conditions of grain sizeijFor 85%mij- 115%mij,
Wherein, QijIt indicates in fill out sand tube, grain size is the actual mass of the artificial core mineral i of j, unit g.
7. fill out sand tube according to claim 5, it is characterised in that：In the fill out sand tube, each artificial core mineral is each
Volume T under the conditions of grain sizeijFor 85%Vij- 115%Vij,
Wherein, TijIt indicates in fill out sand tube, grain size is the actual volume of the artificial core mineral i of j, unit cm3。
8. a kind of Reservoir Seepage analogy method, it is characterised in that：The Reservoir Seepage analogy method is any using claim 5-7
Fill out sand tube described in carries out seepage simulation.
9. Reservoir Seepage analogy method according to claim 8, it is characterised in that：The Reservoir Seepage analogy method includes
The step of simulated formation water and Simulation of Crude Oil are injected into the fill out sand tube, make the fill out sand tube reach moisture content needed for experiment and
Oil content；
Then oil recovery medium is injected into the fill out sand tube, and Reservoir Seepage simulation is carried out under the oil production method of setting；
Preferably, the Reservoir Seepage analogy method further includes by the water phase in the front and back fill out sand tube of Reservoir Seepage simulation, oil
The step of phase, oil recovery medium, rock core mineral and seepage flow performance parameter compare and analyze.
10. Reservoir Seepage analogy method according to claim 9, it is characterised in that：The oil recovery medium includes but unlimited
In the combination of one or more of acid, alkali, gas, surfactant, polymer, microorganism；
Preferably, the oil production method includes displacement or handles up.
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|---|---|---|---|---|
| CN102564900A (en) * | 2012-01-18 | 2012-07-11 | 东北石油大学 | Simulation test method for seepage process of polymer solution at different positions of stratum |
| WO2017024538A1 (en) * | 2015-08-11 | 2017-02-16 | 深圳朝伟达科技有限公司 | Method for preparing drill core |
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| CN102564900A (en) * | 2012-01-18 | 2012-07-11 | 东北石油大学 | Simulation test method for seepage process of polymer solution at different positions of stratum |
| WO2017024538A1 (en) * | 2015-08-11 | 2017-02-16 | 深圳朝伟达科技有限公司 | Method for preparing drill core |
| CN106596223A (en) * | 2016-12-12 | 2017-04-26 | 西南石油大学 | Production method of rock core for compact gravel rock oil displacement |
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