CN109372476A - A kind of production method of multi-functional fracture hole oil reservoir injecting physical model - Google Patents
A kind of production method of multi-functional fracture hole oil reservoir injecting physical model Download PDFInfo
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- CN109372476A CN109372476A CN201811321603.6A CN201811321603A CN109372476A CN 109372476 A CN109372476 A CN 109372476A CN 201811321603 A CN201811321603 A CN 201811321603A CN 109372476 A CN109372476 A CN 109372476A
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- physical model
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- fracture hole
- solution cavity
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001868 water Inorganic materials 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000000605 extraction Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000004088 simulation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000009533 lab test Methods 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 40
- 206010017076 Fracture Diseases 0.000 description 40
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 235000019994 cava Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- E21B43/20—Displacing by water
-
- 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
- E21B43/164—Injecting CO2 or carbonated water
-
- 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of production methods of multi-functional fracture hole oil reservoir injecting physical model, comprising: (1) according to similarity criterion, obtains the volume in each crack in injecting physical model, the volume of solution cavity and height；(2) interconnected fracture is simulated using steel pipeline, determines length of pipeline；(3) solution cavity is simulated using cylindrical steel intermediate receptacle, has entrance in top, the bottom of intermediate receptacle；(4) placement location of each intermediate receptacle is determined；(5) link position of intermediate receptacle and pipeline is determined；(6) initial oil saturation and water saturation of intermediate receptacle are established；(7) inlet and extraction mouth of injecting physical model are set, and injecting is by storage tank by inlet injection model after displacement pump pressurization.Material of the present invention is simple, low in cost, and the physical model of production can carry out relatively simplely fracture hole oil reservoir injecting laboratory test, more preferable simulation fracture hole oil reservoir injecting development process.
Description
Technical field
The present invention relates to the methods that fracture cave reservoir in petroleum natural gas exploration field builds physics experimental model.
Background technique
Physical analogy is to simulate a kind of important means of Reservoir Development.Practice have shown that model geometric size is bigger, experiment
As a result closer to mining site reality.Experiment rock core is divided into natural and two kinds artificial.Natural core obtains more difficulty, cost and also compares
It is high.So generally carrying out the physical analogy of large-sized model using artificial core.
Fractured-cavernous carbonate reservoir reservoir belongs to the reservoir of reworked, due to the shadow of lithology, construction and corrosion etc.
It rings, the type of reservoir space has significantly different compared with clastic reservoir rock.Hole, hole, seam are main reservoir space and flowing
Channel, and fracture and cave reservoir has the characteristics that spatial stochastically distribution, configuration relation are complicated, shape dimensional variation is various.Solution cavity is
Refer to that diameter is greater than the hole of 50mm, dissolution pore refers mainly to diameter in 2mm to the hole between 50mm, and crack is mainly with construction, corrosion
Based on seam, fracture aperture is less than 1mm mostly.According to the different combination of reservoir space, the three of fractured-cavernous carbonate reservoir
Kind representative reservoir type are as follows: slit formation, crack-hole type, Caves.Wherein, Caves reservoir is to be with the development of large-scale solution cavity
It is main；For crack elimination based on fracture development, hole, hole development are less；And crack-hole type reservoir is then with crack and corrosion hole
Based on the development of hole, large-scale solution cavity development is less.
Existing fracture-pore reservoir physical model mainly includes glass tube model, etches flat plate model, pours irregular mould
Type, rock core fracture hole model etc. attempt complete fracture hole combined system being fabricated to a smaller space mostly, so as to cause
Geometric similarity criterion is unable to satisfy, complex configurations relationship is ignored, and eventually leads to simulation process serious distortion, and analog result shortage refers to
The property led.Solution cavity various shapes, Filling Characteristics are complicated in oil reservoir, and fracture condudtiviy difference is big, and connection relationship is complicated, existing mould
Type is difficult to control in the production process, and experimentation flexibility is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of multi-functional fracture hole oil reservoir injecting physical model, use material
Simply, low in cost, easy to operate, fracture hole oil reservoir injecting room can be carried out relatively simplely using the physical model of this method production
Interior test, can more preferable simulation fracture hole oil reservoir injecting development process.
To reach the above technical purpose, the present invention provides following technical scheme.
A kind of production method of multi-functional fracture hole oil reservoir injecting physical model, successively the following steps are included:
(1) according to similarity criterion, by the volume in each crack, solution cavity in fracture hole assembly in practical fracture hole oil reservoir symmetry element
Volume and the height of solution cavity obtain the volume Vf in each crack in injecting physical modeli(i=1,2,3 ..., N1.N1For fracture hole group
The quantity in crack in zoarium), the volume V of solution cavitycjWith the height H of solution cavityj(j=1,2,3 ..., N2.N2It is molten in fracture hole assembly
The quantity in hole)；
(2) use internal diameter for DfSteel pipeline simulate interconnected fracture, the volume in each crack is in injecting physical model
Vfi, corresponding length of pipeline is li=Vfi/(3.14*(Df/2)2) (i=1,2,3 ..., N1.N1For crack in fracture hole assembly
Quantity)；(3) solution cavity is simulated using cylindrical steel intermediate receptacle, has entrance in top, the bottom of intermediate receptacle, in
Between container fixed by liftable pedestal, the volume (i.e. the volume of solution cavity) of each intermediate receptacle is in injecting physical model
Vcj, height (i.e. the height of solution cavity) is Hj, the internal diameter D of corresponding intermediate receptaclej=[4Vcj/(3.14*Hj)]0.5(j=1,2,
3 ..., N2.N2For the quantity of solution cavity in fracture hole assembly)；
(4) placement location of each intermediate receptacle is determined: with position in fracture hole assembly in practical fracture hole oil reservoir symmetry element
Horizontal plane locating for the minimum point of minimum solution cavity is benchmark face, calculates fracture hole assembly in practical fracture hole oil reservoir symmetry element
In the minimum point of each solution cavity and the difference of datum level, the pedestal of each intermediate receptacle is set on this basis；
(5) link position of intermediate receptacle and pipeline is determined: each solution cavity and crack connection position in practical fracture hole assembly
The ratio between the solution cavity volume under solution cavity volume and link position on setting is Rjk, k=1,2,3 ..., N3(N3For fracture hole combination
J-th of solution cavity is connected to the quantity of node with crack in body), in injecting physical model, intermediate receptacle and pipeline press practical fracture hole
Each solution cavity is attached with crack connected relation in assembly, the volume of intermediate receptacle at intermediate receptacle and pipeline connecting position
More consistent with solution cavity volume ratio at the link position in crack than with solution cavity in practical fracture hole assembly, intermediate receptacle is connect with pipeline
The vertical height of position and intermediate receptacle minimum point is Hmjk=Hj/(Rjk+ 1), the pipeline connecting hole setting in injecting physical model
On the side wall of intermediate receptacle, and there is seal plug in the junction of intermediate receptacle and pipeline；
(6) the grease saturation degree So according to each solution cavity in practical fracture hole assemblyj、Swj, it is right in injecting physical model to determine
The grease volume for the intermediate receptacle answered is respectively Voj、Vwj, wherein Voj=Soj×Vcj, Vwj=Swj×Vcj, pass through intermediate receptacle
Top entry injected slurry volume be VojOil, from bottom inlet injected slurry volume be VwjWater, establish among injecting physical model and hold
The initial oil saturation and water saturation of device；
(7) inlet of injecting physical model is set according to the position of practical fracture hole oil reservoir symmetry element injection well, according to
The extraction mouth of the position setting injecting physical model of practical fracture hole oil reservoir symmetry element producing well, injecting is by the storage tank with piston
In inlet injection model after displacement pump pressurization through injecting physical model, the bottom of injecting physical model intermediate receptacle enters
Mouth is used as bottom water entrance.
Injecting used is water, nitrogen or carbon dioxide in the injecting physical model, and injection pressure or injection rate can lead to
Cross displacement pump setting.
The intermediate receptacle of the injecting physical model is separately installed with oil/gas, oil/water magnetic substance liquid level meter in vertical direction,
For monitoring the variation of oil gas or oil-water interfaces in intermediate receptacle.
The extraction mouth of the injecting physical model is connect by pipeline with back-pressure valve, and outlet pressure size is controlled.
The injecting physical model is placed in insulating box, is consistent its temperature with formation temperature.
Compared with prior art, the injecting physical model that the present invention makes includes solution cavity, crack, magnetic substance liquid level meter；It is described
Solution cavity and crack are attached by practical fracture hole oil reservoir fracture hole connected relation；The physical model is provided with inlet, extraction mouth
With bottom water entrance.The fracture hole model has detachability, so that experiment is had more operability and flexibility, effectively shortens model
It establishes, adjustment, maintenance period, model is simple, convenient for production, greatly reduces experimental cost.
Detailed description of the invention
Fig. 1 is fracture hole oil reservoir injecting physical model injecting process flow schematic diagram of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now attached drawing is compareed furtherly
The bright present invention.
Injecting physical model proposed by the present invention is according to simplified fractured-cavernous carbonate reservoir obtained from similarity criterion
Injecting physical model, as shown in Figure 1, the multi-functional fractured-cavernous carbonate reservoir injecting physical model includes by multiple intermediate appearances
The fracture hole assembly that device (i.e. solution cavity) and steel pipeline (i.e. interconnected fracture) are constituted, intermediate receptacle and steel pipeline press practical fracture hole
The fracture hole connected relation of oil reservoir is attached.Inlet, extraction mouth and bottom water entrance are provided in the injecting physical model, in
Between oil/gas, oil/water magnetic substance liquid level meter are installed in container, for monitoring the situation of change of oil gas water interface in intermediate receptacle, infuse
Agent physical model is put into insulating box constant temperature to actual reservoir temperature after being completed.
The water (or the injectings such as nitrogen) in the storage tank with piston is injected into injecting physical model by displacement pump, carries out fracture hole
The injecting physical analogy of oil reservoir, injecting physical model extraction mouth is connect with back-pressure valve, for controlling outlet pressure, then with separator
Connection, for measuring the oil gas water of output respectively.
Claims (6)
1. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model, successively the following steps are included:
(1) according to similarity criterion, by the volume in each crack in fracture hole assembly in practical fracture hole oil reservoir symmetry element, the body of solution cavity
Long-pending and solution cavity height obtains the volume Vf in each crack in injecting physical modeli(i=1,2,3 ..., N1.N1For fracture hole assembly
The quantity in middle crack), the volume V of solution cavitycjWith the height H of solution cavityj(j=1,2,3 ..., N2.N2For solution cavity in fracture hole assembly
Quantity)；
(2) use internal diameter for DfSteel pipeline simulate interconnected fracture, the volume in each crack is Vf in injecting physical modeli, right
The length of pipeline answered is li=Vfi/(3.14*(Df/2)2) (i=1,2,3 ..., N1.N1For the number in crack in fracture hole assembly
Amount)；
(3) solution cavity is simulated using cylindrical steel intermediate receptacle, has entrance in top, the bottom of intermediate receptacle, centre holds
Device is fixed by liftable pedestal, and the volume of each intermediate receptacle is Vc in injecting physical modelj, it is highly Hj, corresponding intermediate
The internal diameter D of containerj=[4Vcj/(3.14*Hj)]0.5(j=1,2,3 ..., N2.N2For the quantity of solution cavity in fracture hole assembly)；
(4) placement location of each intermediate receptacle is determined: minimum with position in fracture hole assembly in practical fracture hole oil reservoir symmetry element
Solution cavity minimum point locating for horizontal plane be benchmark face, calculate in practical fracture hole oil reservoir symmetry element each in fracture hole assembly
The minimum point of a solution cavity and the difference of datum level, are arranged the pedestal of each intermediate receptacle on this basis；
(5) determine the link position of intermediate receptacle and pipeline: in practical fracture hole assembly each solution cavity and crack link position it
On solution cavity volume and the ratio between the solution cavity volume under link position be Rjk, k=1,2,3 ..., N3(N3For in fracture hole assembly
J-th of solution cavity is connected to the quantity of node with crack), in injecting physical model, intermediate receptacle is combined with pipeline by practical fracture hole
Each solution cavity is attached with crack connected relation in body, at intermediate receptacle and pipeline connecting position the volume ratio of intermediate receptacle with
Solution cavity is consistent with solution cavity volume ratio at the link position in crack in practical fracture hole assembly；
(6) the grease saturation degree So according to each solution cavity in practical fracture hole assemblyj、Swj, determine that injecting physical model is corresponding
Between the grease volume of container be respectively Voj、Vwj, wherein Voj=Soj×Vcj, Vwj=Swj×Vcj, pass through the top of intermediate receptacle
Entrance injected slurry volume is VojOil, from bottom inlet injected slurry volume be VwjWater, establish the original of injecting physical model intermediate receptacle
Beginning oil saturation and water saturation；
(7) inlet of injecting physical model is set according to the position of practical fracture hole oil reservoir symmetry element injection well, according to reality
The extraction mouth of the position setting injecting physical model of fracture hole oil reservoir symmetry element producing well, injecting is by the storage tank with piston through driving
For in the inlet injection model for passing through injecting physical model after pump pressurization, the bottom inlet of injecting physical model intermediate receptacle is made
For bottom water entrance.
2. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model as described in claim 1, which is characterized in that institute
The link position that step (5) determines intermediate receptacle and pipeline is stated, in injecting physical model, intermediate receptacle and pipeline are by practical seam
Each solution cavity is attached with crack connected relation in the assembly of hole, and the position that intermediate receptacle is connect with pipeline and intermediate receptacle are most
The vertical height of low spot is Hmjk=Hj/(Rjk+ 1), the side wall of intermediate receptacle is arranged in the pipeline connecting hole in injecting physical model
On, there is seal plug in the junction of intermediate receptacle and pipeline.
3. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model as described in claim 1, which is characterized in that institute
Stating injecting in step (7) is water, nitrogen or carbon dioxide, and injection pressure or injection rate can be pumped by displacement to be arranged.
4. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model as described in claim 1, which is characterized in that institute
The intermediate receptacle for stating injecting physical model installs oil/gas, oil/water magnetic substance liquid level meter in vertical direction respectively, for monitoring centre
The variation of oil gas or oil-water interfaces in container.
5. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model as described in claim 1, which is characterized in that institute
The extraction mouth for stating injecting physical model is connect with back-pressure valve, controls outlet pressure size.
6. a kind of production method of multi-functional fracture hole oil reservoir injecting physical model as described in claim 1, which is characterized in that institute
It states injecting physical model to be placed in insulating box, is consistent its temperature with formation temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811321603.6A CN109372476A (en) | 2018-11-07 | 2018-11-07 | A kind of production method of multi-functional fracture hole oil reservoir injecting physical model |
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| CN201811321603.6A CN109372476A (en) | 2018-11-07 | 2018-11-07 | A kind of production method of multi-functional fracture hole oil reservoir injecting physical model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714756A (en) * | 2019-11-21 | 2020-01-21 | 西南石油大学 | High-temperature high-pressure X-CT scanning fracture-cave physical model |
| CN110805440A (en) * | 2019-11-26 | 2020-02-18 | 西南石油大学 | Visual agent injection physical model for high-temperature high-pressure fracture-cavity oil reservoir |
| CN113294130A (en) * | 2020-02-24 | 2021-08-24 | 中国石油化工股份有限公司 | Method for determining gas injection and water injection wave and minimum fracture size of fracture-cavity oil reservoir |
| CN114973891A (en) * | 2021-02-22 | 2022-08-30 | 中国石油化工股份有限公司 | Three-dimensional visual fracture and cave model and manufacturing method thereof |
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| CN110714756A (en) * | 2019-11-21 | 2020-01-21 | 西南石油大学 | High-temperature high-pressure X-CT scanning fracture-cave physical model |
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| CN114973891B (en) * | 2021-02-22 | 2024-04-09 | 中国石油化工股份有限公司 | Three-dimensional visual fracture-crack hole model and manufacturing method thereof |
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Application publication date: 20190222 |