CN106761629A - A kind of steam injection thickened oil recovery experimental technique and device with crustal stress condition - Google Patents
A kind of steam injection thickened oil recovery experimental technique and device with crustal stress condition Download PDFInfo
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- CN106761629A CN106761629A CN201611182947.4A CN201611182947A CN106761629A CN 106761629 A CN106761629 A CN 106761629A CN 201611182947 A CN201611182947 A CN 201611182947A CN 106761629 A CN106761629 A CN 106761629A
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- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 63
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 238000002474 experimental method Methods 0.000 title claims abstract description 30
- 230000008859 change Effects 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 34
- 230000008569 process Effects 0.000 abstract description 16
- 230000035882 stress Effects 0.000 description 108
- 239000003921 oil Substances 0.000 description 66
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 238000005259 measurement Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical group [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- 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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- 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)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a kind of steam injection thickened oil recovery experimental technique and device with crustal stress condition.The experimental provision includes hyperbaric chamber and model ontology；Model ontology is arranged in hyperbaric chamber；Model ontology is cuboid, and cuboid includes preceding surface, rear surface, left surface, right surface, upper and lower surface；Preceding surface and right surface are provided with oil sac；Upper surface is piston cylinder operator；It is set to be rigidly connected between lower surface and preceding surface, rear surface, left surface, right surface.Present invention also offers the steam injection thickened oil recovery experimental technique with crustal stress condition completed using above-mentioned experimental provision.Steam injection thickened oil recovery experimental technique and device with crustal stress condition of the invention can react important physical process under the conditions of crustal stress, improve primary condition and boundary condition.
Description
Technical field
The present invention relates to a kind of experimental technique and device, more particularly to a kind of steam injection thickened oil recovery with crustal stress condition
Experimental technique and device, belong to oil reservoir production technique field.
Background technology
It is interior in the past few decades, achieved with the physical Model Study steam injection heavy oil development thing mould technology of scale smaller
Huge success, is that theoretical research and mechanism understanding have established important basis, and form some important research meanses
And method.
Because physical simulation experiment is that true reservoir system A is simulated using system B, the size of two systems is not one
The order of magnitude, but in order that the principal physical process obtained inside two systems is identical, it is desirable to have a set of constraints, to ensure
In systemb it was observed that phenomenon can directly amplify system A, so as to instruct the running of system A.Mainly include initial strip
Part, boundary condition.Wherein, primary condition refers to the state or parameter before oil reservoir is not employed in system A, and such as oil reservoir is initially warm
Degree, initial pressure, initial oil saturation, initial field stress etc. are also completely the same in systemb.Boundary condition refers to system
The border of A oil reservoirs, generally non-streaming moving boundary, adiabatic boundary, what these in systemb also should be complete embodies.
For laboratory physical simulation experiment, to be taken in a series of dimensionless terms according to the difference of research object
House.But most basic principle is：Important physical process is similar, primary condition is similar, boundary condition is similar.With the most frequently used PB
As a example by criterion, it passes through geometric similarity, diabatic process is similar, driving force is similar with resistance ratios etc., it is proposed that a set of ratio modelling
Method, according to this set modeling method, can be amplified to live rank, so as to be produced with contrived experiment parameter and by experimental result
Predict and scene regulation and control are instructed, the method is widely applied.Conventional model equipment has two kinds of ways：
First, cuboid sclerine model, constrained displacement border, internal back-up sand compacting are taken.The method is simple and easy to apply, but heat waste
Lose big, it is impossible to measure, the parameter such as proof stress strain；
2nd, take thin-walled model to be put into hyperbaric chamber and apply confined pressure, actually form hydrostatic pressure environment, model can be
Deform in any direction.The method is relative complex, and advantage is relatively small heat loss.Not possessing measurement, proof stress equally should
Become isoparametric ability.
In recent years, minute-pressure is split reservoir reconstruction, cuts dilatation of rising and improve the new technology such as oil-producing speed and be used for cost efficiency, gradually
Paid attention to.And the core of these technologies is the transformation to crustal stress, so as to realize that partial bores ooze the improvement of condition.
Crustal stress is the stress being present in the earth's crust.In the media interior unit area for being caused due to rock deformation
Active force.It generally comprises two parts：(1) stress caused by the weight of overlying rock, it is used to by gravitation and earth rotation
Property centrifugal force causes；(2) tectonic stress passed over by neighbouring plot or bottom.This stress refers to poor with standard state
Different part, it is also remained in addition to including the Modern tectonic stress transmitted by neighbouring plot or bottom including past tectonic movement
Get off and not yet it is fully relaxed fall residual stress, and the STRESS VARIATION that nearby artificial engineering (such as tunnel, production face) causes.
Tectonic stress directly reflects the power source of crustal movement, and it is a key factor for causing earthquake.It is strong in tectonic stress
Regional tunnel excavation, because hole wall is easily deformed as Free Surface, makes hole body be gradually reduced or cause to cave in, therefore research ground
Stress has great importance.
Crustal stress is objective reality and influences the key factor of oil recovery process, thus actual response ground stress environment is perfect
The basis of lab simulation, including primary condition and boundary condition, for study indoors oil-sand cut rise, micro-crack dilatation, part
The phenomenons such as crack initiation are most important.But, in Typical physical model, there is no deviatoric stress, it is impossible to which swollen phenomenon is cut in generation；Also cannot
The important thermal recovery phenomenons such as reflection lifting, crack.
The content of the invention
For above-mentioned technical problem, can react important under the conditions of crustal stress it is an object of the invention to provide a kind of
Physical process, improves the steam injection thickened oil recovery experimental technique and device of primary condition and boundary condition.
In order to realize above-mentioned technical purpose, present invention firstly provides a kind of steam injection thickened oil recovery with crustal stress condition
Experimental provision, the steam injection thickened oil recovery experimental provision with crustal stress condition includes hyperbaric chamber and model ontology；
Wherein, model ontology is arranged in hyperbaric chamber；
Model ontology is cuboid, and cuboid includes preceding surface, rear surface, left surface, right surface, upper surface and following table
Face；
Preceding surface and the right surface are provided with oil sac；
It is piston type attachment structure between upper surface and preceding surface, rear surface, left surface, right surface；
It is set to be rigidly connected between lower surface and preceding surface, rear surface, left surface, right surface.
Specific embodiment of the invention, is set between lower surface and preceding surface, rear surface, left surface, right surface
Rigidly connected purpose is to prevent malformation.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, it is preferable that the developed surface of oil sac
Product matches with the area on right surface.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, the developed area of oil sac and right table
The area in face matches, and size is close so that the pressure inside oil sac is easier and the pressure and model suffered by right surface
It is equal in the pressure size of the direction.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, it is preferable that model ontology is gold
The model ontology that category material is made.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, it is preferable that the wall of model ontology
Thickness is 4cm-8cm.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, it is preferable that preceding surface and right table
Face is respectively arranged with pipeline hole.
Specific embodiment of the invention, sets pipeline hole for the connecting tube through oil sac and outer plunger pump
Line.
In the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention, it is preferable that the chi of model ontology
The very little size according to target reservoir, is determined by similar treatment.
Similar treatment refers to geometric similarity, such as, target reservoir size is 400 × 100 × 25 meters, and selection similar proportion is
100 times, then physical model size is 400 × 100 × 25 centimetres, and being in similar proportion is between oil reservoir size and indoor model size
Bridge.
Present invention also offers a kind of steam injection thickened oil recovery experimental technique with crustal stress condition, the band crustal stress condition
Steam injection thickened oil recovery experimental technique be to be completed by above-mentioned steam injection thickened oil recovery experimental provision with crustal stress condition,
The steam injection thickened oil recovery experimental technique with crustal stress condition is comprised the following steps：
To in model ontology, preliminary filling hydraulic fluid and back-up sand are carried out；
Horizontal maximum principal stress and horizontal minimum principal stress according to target reservoir carry out pressurising to the model ontology, make
It is horizontal maximum principal stress and horizontal minimum principal stress；
Vertical principal stress according to target reservoir as vertical principal stress, and keeps constant to pressurising in the hyperbaric chamber；
Exploitation via steam injection is carried out, and records the pressure change in the model ontology, observe the dynamic change of crustal stress, it is complete
Into the steam injection thickened oil recovery experiment with crustal stress condition.
In the steam injection thickened oil recovery experimental technique with crustal stress condition of the invention, it is preferable that carry out preliminary filling hydraulic fluid
And the step of during the step of back-up sand, the step of first carry out priming fluid carry out back-up sand again.
Specific embodiment of the invention, exploitation via steam injection and conventional exploitation via steam injection in the method for the present invention
The step of it is basically identical, generally include：Vacuumize saturation water, saturated oils with pressure, aging, steam injection note of lowering the temperature and the step such as adopt.
In the steam injection thickened oil recovery experimental technique with crustal stress condition of the invention, it is preferable that determine that level is maximum
During the direction of principal stress and horizontal minimum principal stress, using the optional direction in horizontal direction as horizontal minimum principal stress
Direction, the direction of horizontal maximum principal stress is orthogonal with the direction of horizontal minimum principal stress.
In the steam injection thickened oil recovery experimental technique with crustal stress condition of the invention, it is preferable that according to live minute-pressure
Test is split, horizontal minimum principal stress σ h are obtained；According to log to density integral, vertical principal stress σ V are obtained；According to
Kaiser effect experiments, obtain horizontal maximum principal stress σ H.
Specific embodiment of the invention, level maximum maximum principal stress σ H can be obtained by empirical relation.Its
In, survey minimum principal stress, the kaiser experiment horizontal maximum principal stresses of survey are split in minute-pressure, can obtain horizontal maximum principal stress and level
The ratio of minimum principal stress.Ratio such as certain block is 1.5, when we measure horizontal minimum principal stress in adjacent block,
The ratio is may be referred to calculate horizontal maximum principal stress.
Steam injection thickened oil recovery experimental provision with crustal stress condition of the invention can truly simulate related to crustal stress
Physical process, apply independent ess-strain border：The constant strain condition on constant stress, perisporium on vertical, while
Apply primary stress condition.
Steam injection thickened oil recovery experimental provision and method with crustal stress condition of the invention pass through the following aspects reality
Now simulate：
Improve primary condition-crustal stress primary condition
Oil reservoir has a ground stress environment in original state, and it is formed by factors such as deposition process and constructions.Initially
Stress state has been largely fixed the extension direction that note adopts the crack of activity formation, while also cutting in influence steam injection process
Swollen degree.Test can be split by live minute-pressure, obtain horizontal minimum principal stress σ h；Density integral is hung down according to log
To principal stress σ V；Rule of thumb relation or Kaiser effect experiment calculated level maximum principal stress σ H；Physical model is in back-up sand
Saturation water, back-up sand saturated oils and after setting up initial void pressure, reservoir temperature, it should select corresponding face to apply corresponding just should
Power.
Selection respective interface applies corresponding normal pressure to be carried out with specific reference to following steps：
First according to above-described detecting earth stress method, three-dimensional principal stress is obtained.With σ H>σV>As a example by σ h, it should select
Any horizontal direction of model is selected as horizontal biggest principal stress direction σ H, and corresponding with applying on the face that this direction is vertical
Horizontal maximum principal stress σ H (in the oil sac internal-filling liquid of face contact)；Then level is applied most on other direction in the horizontal plane
Minor principal stress σ h, method is identical with σ H.σ H are in the horizontal plane and orthogonal with σ h；Finally in hyperbaric chamber inner inflatable, produce and hang down
To the pressure of principal stress σ V, the pressure is acted on piston, produces vertical deviation, and form vertical principal stress σ V.
Improve boundary condition-ess-strain boundary condition
During steam injection heavy oil development, steam injects oil reservoir from pit shaft, and slowly extension forms vapour chamber.In vapour chamber and
Neighbouring will be expanded by heat reservori, be cut the effect such as swollen, but be deformed without normal direction horizontal direction and oil reservoir bottom, but logical
Cross Poisson benefit to be discharged to vertical upward generation lifting, this is also that a large amount of thermal production wells can occur the original of a certain degree of surface uplift
Cause.Boundary stress problem, steam injection thickened oil recovery experiment dress of the invention have been related in corresponding dynamic physical model
In putting, the border of upper surface is provided with moveable free boundary, can expanded by heating, cut it is swollen etc. effect under freely lift
Rise；Other 5 faces are fixed boundaries, constrain the deformation of rock.And only used in conventional model, bottom surface, four side conducts
Non-streaming moving boundary, does not have rational ess-strain border.
Reflection important physical process；
In Typical physical model, there is no deviatoric stress, it is impossible to which swollen phenomenon is cut in generation；Also lifting, crack etc. cannot be reflected
The ground stress characteristics of important thermal recovery phenomenon and different buried depth oil reservoir；General underground fracture all follows following rule：
Shallow-layer σ V<σh<σ H, on vertical, pressure-raising steam injection easily forms horizontal fracture to minimum principal stress；
Middle-shallow layer σ h<σV<σ H, in level upwards, pressure-raising steam injection easily forms vertical fracture to minimum principal stress；
Deep layer σ h<σH<σ V, in level upwards, pressure-raising steam injection easily forms vertical fracture to minimum principal stress；
And the steam injection thickened oil recovery experimental provision and method with crustal stress condition of the application can reflect important thing
Reason process, such as produces lifting, crack and crustal stress to change closely related physical phenomenon.
Compared to the prior art steam injection thickened oil recovery experimental provision and method with crustal stress condition of the invention, have
Following beneficial effect：
Hot lifting process caused by steam injection, direct measurement Uplifting amount and relevant operational parameter such as temperature, pressure can be simulated
Power, note adopt the relation of speed etc.；
Can be with the process of simulated target oil reservoir pressure-raising beam body crack initiation；
Can be with the crustal stress change procedure in direct measurement thermal process；
The upper surface of the model ontology of the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention is piston
Structure, back-up sand porosity can be close to formation condition, and this is that conventional equipment is to be difficult to accomplish by manual compaction；
Filling gas drop significantly in the hyperbaric chamber of the steam injection thickened oil recovery experimental provision with crustal stress condition of the invention
Low heat loss.
Brief description of the drawings
Fig. 1 is the structural representation of the steam injection thickened oil recovery experimental provision with crustal stress condition of embodiment 1.
Oil sac topping up loadings and measurement horizontal stress schematic diagram of the Fig. 2 for embodiment 1.
Fig. 3 is the crustal stress loading effect diagram of embodiment 1.
Fig. 4 is the principal stress change curve of embodiment 1.
Fig. 5 is the Uplifting amount curve of embodiment 1.
Specific embodiment
In order to be more clearly understood to technical characteristic of the invention, purpose and beneficial effect, now to skill of the invention
Art scheme carry out it is described further below, but it is not intended that to it is of the invention can practical range restriction.
Present embodiments provide a kind of steam injection thickened oil recovery experimental provision with crustal stress condition, its structure such as Fig. 1 institutes
Show, the steam injection thickened oil recovery experimental provision with crustal stress condition includes hyperbaric chamber and model ontology；
Wherein, model ontology is arranged in hyperbaric chamber；
Model ontology is cuboid, and cuboid includes preceding surface, rear surface, left surface, right surface, upper surface and following table
Face；Preceding surface and the right surface are provided with oil sac (as shown in Figure 2), and the developed area of oil sac is close with the area on right surface,
Connection oil sac passes through preceding surface and right surface with the pipeline of outer plunger pump；Upper surface is piston cylinder operator, can be moved up and down；
It is set to be rigidly connected between lower surface and preceding surface, rear surface, left surface, right surface, prevents model ontology deformation.
The model ontology that model ontology is made for metal material, wall thickness is 4cm-8cm.
The present embodiment additionally provides a kind of band completed using the steam injection thickened oil recovery experimental provision with crustal stress condition
The steam injection thickened oil recovery experimental technique of crustal stress condition, specifically includes following steps：
Oil sac (in two optionally orthogonal vertical sides) is arranged inside model ontology, the quartz sand of 140 mesh is filled out；
According to the target reservoir crustal stress data that test is obtained, three-dimensional principal stress is obtained, as shown in figure 3, Fig. 3 is target oil
The crustal stress states schematic diagram of Tibetan.With σ H>σV>As a example by σ h, it should which any horizontal direction of preference pattern is maximum main as level
Stress direction σ H, and with apply corresponding stress σ H (connecing thick oil sac internal-filling liquid in the face) on the face that this direction is vertical；Connect
Applying stress σ h on other direction in the horizontal plane, method is identical with σ H.σ H are in the horizontal plane and orthogonal with σ h；Finally
In hyperbaric chamber inner inflatable, produce the pressure of σ V, the pressure to act on piston, produce vertical deviation, and form vertical master and answer
Power σ V.
Model is vacuumized, the gas inside discharge model sand；
Model saturation water, water is full of by model sand internal void space；
Model saturated oils, improves model temperature to 80 ° or so, is slowly injected into mother oil displacement pore water, forms initial oil-containing
Saturation degree and irreducible water saturation；
Cool aging.
By taking certain heavy crude reservoir that buried depth is 400 meters as an example, introduce steam injection note and adopt experimental procedure：
Steam generator provides 250 DEG C, the high temperature saturated vapor of 4MPa, 10mL/min, and steam injects mould through steam transmitting pipe line
Steam injection well in type, be heated crude oil and condensate liquid flow into producing well and by output.With the carrying out of the process of adopting of showwing loving care for, inside model
Vapor chamber constantly expands.Simultaneously because vapor chamber internal flow and rock particles expanded by heating, the piston above model will be upward
Portion moves, and by obtaining Uplifting amount by the relative displacement for measuring piston, experimental result is shown in Fig. 5, can be pre- using experimental data
Survey the Uplifting amount of earth's surface in thermal recovery project；
Oil sac not oiling also not outer row in experimentation, when horizontal direction stress changes, oil sac internal pressure with
Change, horizontal direction crustal stress that can be with direct measurement during note is adopted by equipment such as the pressure sensors that is attached thereto
Change procedure, experimental result is shown in Fig. 4, reacts under affined boundary condition, and level there occurs change to principal stress, i.e., should
Power state dynamic change with the carrying out of development process.
Above example illustrates that steam injection thickened oil recovery experimental provision and method with crustal stress condition of the invention can be with
The process of simulated target oil reservoir pressure-raising beam body crack initiation, the crustal stress change procedure in direct measurement thermal process is substantially reduced
Heat loss.
Claims (10)
1. a kind of steam injection thickened oil recovery experimental provision with crustal stress condition, it is characterised in that the note with crustal stress condition
Steam thickened oil recovery experimental provision includes hyperbaric chamber and model ontology；
Wherein, the model ontology is arranged in the hyperbaric chamber；
The model ontology be cuboid, the cuboid include preceding surface, rear surface, left surface, right surface, upper surface and under
Surface；
The preceding surface and the right surface are provided with oil sac；
The upper surface and the preceding surface, between rear surface, left surface, right surface be piston type attachment structure；
The lower surface and the preceding surface, it is set between rear surface, left surface, right surface to be rigidly connected.
2. the steam injection thickened oil recovery experimental provision with crustal stress condition according to claim 1, it is characterised in that described
The developed area of oil sac matches with the area on right surface.
3. the steam injection thickened oil recovery experimental provision with crustal stress condition according to claim 1, it is characterised in that described
The model ontology that model ontology is made for metal material.
4. the steam injection thickened oil recovery experimental provision with crustal stress condition according to claim 1 or 3, it is characterised in that
The wall thickness of the model ontology is 4cm-8cm.
5. the steam injection thickened oil recovery experimental provision with crustal stress condition according to claim 1, it is characterised in that described
Preceding surface and the right surface are respectively arranged with pipeline hole.
6. the steam injection thickened oil recovery experimental provision with crustal stress condition according to claim 1, it is characterised in that described
The size of model ontology is determined according to the actual size of target reservoir by similar treatment.
7. a kind of steam injection thickened oil recovery experimental technique with crustal stress condition, it is characterised in that the note with crustal stress condition
Steam thickened oil recovery experimental technique is by the steam injection thickened oil recovery with crustal stress condition described in claim any one of 1-6
What experimental provision was completed, the steam injection thickened oil recovery experimental technique with crustal stress condition is comprised the following steps：
To in the model ontology, preliminary filling hydraulic fluid and back-up sand are carried out；
Horizontal maximum horizontal principal stress and horizontal minimum principal stress according to target reservoir carry out pressurising to the model ontology, make
It is horizontal maximum principal stress and horizontal minimum principal stress；
Vertical principal stress according to target reservoir as vertical principal stress, and keeps constant to pressurising in the hyperbaric chamber；
Exploitation via steam injection is carried out, and records the pressure change in the model ontology, observe the dynamic change of crustal stress, complete institute
State the steam injection thickened oil recovery experiment with crustal stress condition.
8. the steam injection thickened oil recovery experimental technique with crustal stress condition according to claim 7, it is characterised in that carry out
During the step of preliminary filling hydraulic fluid and back-up sand, the step of first carry out preacceleration inflation liquid after the step of carry out back-up sand.
9. the steam injection thickened oil recovery experimental technique with crustal stress condition according to claim 8, it is characterised in that it is determined that
It is minimum as level using the optional direction in horizontal direction during the direction of horizontal maximum principal stress and horizontal minimum principal stress
The direction of principal stress, the direction of horizontal maximum principal stress is orthogonal with the direction of horizontal minimum principal stress.
10. the steam injection thickened oil recovery experimental technique with crustal stress condition according to claim 7, it is characterised in that root
Test is split according to live minute-pressure, the horizontal minimum principal stress of target reservoir is obtained；According to log to density integral, obtain vertical
Principal stress；According to Kaiser effect experiments, horizontal maximum principal stress is obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108518213A (en) * | 2018-04-12 | 2018-09-11 | 中北大学 | A kind of rock high-temperature high-pressure overheat steam control crushing test device |
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| US20090070043A1 (en) * | 2006-10-31 | 2009-03-12 | Chang-Ha Ryu | Method and apparatus for measuring in-situ stress of rock using thermal crack |
| CN103485759A (en) * | 2013-09-10 | 2014-01-01 | 中国石油大学(北京) | Oil-gas well hydraulically-created-fracture expansion visualization experiment method and oil-gas well hydraulically-created-fracture expansion visualization experiment device |
| CN105756645A (en) * | 2014-12-16 | 2016-07-13 | 中国石油化工股份有限公司 | Physical simulation system and method for fracture propagation in shale |
| CN204327057U (en) * | 2014-12-17 | 2015-05-13 | 中国石油大学(北京) | Multi-functional heat extraction by steam injection three-dimensional physical simulation experimental facilities |
| CN104458918A (en) * | 2014-12-30 | 2015-03-25 | 重庆大学 | Super-critical carbon dioxide fractured shale damage positioning monitoring device and method |
| CN105352811A (en) * | 2015-12-03 | 2016-02-24 | 西安石油大学 | Pressurizing device and method for small-sized hydrofracture three-axis assessment and test |
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| CN108518213A (en) * | 2018-04-12 | 2018-09-11 | 中北大学 | A kind of rock high-temperature high-pressure overheat steam control crushing test device |
| CN108518213B (en) * | 2018-04-12 | 2022-02-18 | 中北大学 | Rock high-temperature high-pressure superheated steam control fracturing test device |
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