CN105067408B - Core physical model production method capable of achieving variable-viscosity injection - Google Patents
Core physical model production method capable of achieving variable-viscosity injection Download PDFInfo
- Publication number
- CN105067408B CN105067408B CN201510505881.7A CN201510505881A CN105067408B CN 105067408 B CN105067408 B CN 105067408B CN 201510505881 A CN201510505881 A CN 201510505881A CN 105067408 B CN105067408 B CN 105067408B
- Authority
- CN
- China
- Prior art keywords
- container
- adjustment sheet
- clipper
- hole
- viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to a core physical model production method capable of achieving variable-viscosity injection, and solves the problems that the operation procedures are complex due to the fact that in the traditional indoor test, intermediate containers filled with polymers with different viscosity need continuous conversion. The production method comprises the following specific steps: firstly, producing a simulated clipper, wherein two mutually fitting panels with the same through holes uniformly distributed are arranged inside the clipper, and when the two panels are stagger, the open area of a polymer solution is changed, so that the shearing degree for the polymer solution is different, and the viscosity of the polymer solution is changed; drawing a shear viscosity drawing plate according to the viscosity change of polymers of various tap positions; finally, arranging the simulated clipper in a core physical model, so as to achieve the purpose that the solution viscosity is changed at any time during the test process. According to the production method, intermediate container conversion is not needed during the test process, so that the error caused by intermediate container conversion is decreased, and the accuracy rate of the test result is improved.
Description
Technical field
The present invention relates to a kind of preparation method of rock core physical model.
Background technology
In tertiary oil production in oil field method, the polymer flooding in chemical flooding is that a class is very effective improves recovery ratio side
Method.Polymer flooding is the tertiary oil recovery technology that last century mid-term grows up, and because the method has, technology is simple, cost
Relatively low the features such as, relatively it is adapted to the practical situation in the most of oil fields of China, is gradually widely used.Polymer it is main
The mechanism of action is exactly to reduce mobility ratio by viscosity B coefficent, and the viscosity of polymer solution is the important indicator for affecting polymer flooding effect,
Actually polymer solution viscosity and polymer molecular weight, concentration, shear resistant has direct relation, for it is live it is actual it is non-
Matter reservoir can initially enter larger duct when noting poly- after polymer solution, secondly enter smaller hole larynx, polymer coils
When size is more than rock core throat diameter, polymer molecule can not enter rock core duct under normal injection pressure, and this will cause
Polymer solution injection is difficult, blocks.In chemical agent injection process, when rock core pore throat size and polymer coils
When size compatibility is preferable, increase with injected slurry volume, horizontal segment occurs after injection pressure rise.Conversely, injection pressure and note
Entering volume relationship curve will persistently raise.Even gradually exceed storage fracture pressure, single concentration is noted poly- mode and often occurred
Section is inverted, and the difficult situation of injection occurs in the later stage.Actual reservoir also likely to be present macropore, meeting in note collecting process
There is displacing fluid to advance by leaps and bounds to form inefficient cycle in high permeability zone, now need to become sticky injection to play adjustment effect, so becoming sticky
Injection is the conventional a kind of effective injection mode in scene, presently, there are gradient viscosity reduction, gradient thickening, the injection that becomes sticky several
Mode, effect is better than single concentration injection.
At present by with conventional artificial's core model in the displacement test of the injection that carries out becoming sticky, what laboratory experiment was adopted
Analog form is to realize by way of conversion in displacement process contains piston container of the variable concentrations with viscosity, disposable viscous
Degree limited amount, experiment container takes up an area spatial dimension greatly, and device connection line is loaded down with trivial details, and experimental arrangement is complicated, termination of pumping conversion container
Cause pressure drop, pipeline needs to empty again when new container is connected, and causes the regular hour to waste, produce a large amount of systems
Error, experimental result accuracy declines to a great extent.
The content of the invention
It is an object of the invention to provide a kind of manufacture method of the rock core physical model of the injection that can realize becoming sticky, by this
The rock core physical model that inventive method makes, solving traditional laboratory experiment needs constantly conversion equipped with different viscosity polymer
Intermediate receptacle, the complicated problem of operation sequence carries out poly- drive and tests using this rock core physical model, not only can reduce indoor real
The workload tested, reduces device volume, the simulation degree to field experimentation can also be improved, according to commenting experimental program effect
Valency, can provide strong experiment and ensure for field test.
For achieving the above object, the technical solution used in the present invention is：A kind of rock core of the injection that can realize becoming sticky
The manufacture method of physical model, specifically includes following steps：
1st, the making of clipper is simulated：
Inlet opening and liquid outlet are respectively provided with the arranged on left and right sides wall of a cuboid container, and in cuboid container
Interior its left side wall of dependence and base plate arrange a square container, and the height of the square container is less than the height of cuboid container
Degree, in the right openings of square container adjustment sheet is welded and fixed, uniform some rectangles on the secured adjusted piece, square or
Manhole；On-fixed adjustment sheet is fitted with the right flank of secured adjusted piece, the height of on-fixed adjustment sheet is less than cuboid
The height of container, more than the height of square container, its width is equal with the width of cuboid container inner chamber, on-fixed adjustment sheet
Both sides are respectively provided with along the longitudinally through hole of its body, and two longitudinal rails are fixed in cuboid container, and two guide rails are each passed through
Two through holes；The upper surface middle setting fixed slot of on-fixed adjustment sheet, in the measuring staff front end of differential head locking-type plug is arranged,
Differential head measuring staff is inserted in slot through its front end plug after cuboid container, rotates the microdrum or fine setting button of differential head, non-
Secured adjusted piece is moved up and down along guide rail；On the part fitted with secured adjusted piece of on-fixed adjustment sheet it is uniform several
Through hole is adjusted, these regulation through holes are identical with the form and dimension of through hole on secured adjusted piece, when on-fixed adjustment sheet is in length
During the lowermost end of cube container, through hole and the through hole on secured adjusted piece or so overlapping is adjusted on on-fixed adjustment sheet, with
On-fixed adjustment sheet is progressively upper to be moved, and through hole mutual dislocation is adjusted on through hole and on-fixed adjustment sheet on secured adjusted piece, until solid
Through hole on nodal plate of setting the tone is closed；
2nd, the shear viscosity chart board for simulating clipper makes：
The polymer mother liquor of different molecular weight is prepared, the polymer mother liquor device of different molecular weight is held in different pistons
In device, liquid seepage power is provided for piston container by constant-flux pump, piston container is connected with simulation clipper by pipeline
And polymer solution is flowed into in simulation clipper, and differential head is adjusted manually drives the movement of on-fixed adjustment sheet, make to fix tune
Eyelet between nodal plate and on-fixed adjustment sheet misplaces, and by adjusting different gears, collects by different eyelet shearings
The polymer solution sample crossed, determines its viscosity, formulates the solution viscosity chart board that every kind of mother solution correspondence difference gear is sheared；
3rd, the rock core physical model for laying simulation clipper makes：
First according to the naked rock core of actual oilfield reservoir situation compacting cutting, naked core entry end bonding is simulated into clipper,
Then the opposite side in simulation clipper pastes bakelite plate, finally by naked core surface frictioning, rock core cast molding.
Beneficial effect：The method at core entry end on the basis of routinely casting rock core preparation by arranging simulation shearing
The mode of device obtains rock core physical model, when carrying out the experiment of conventional chambers physical modeling polymer displacement of reservoir oil, manually changes simulation and cuts
The size of cutter the inside perforation size can be sheared to polymer solution viscosity, realize the injection that becomes sticky, in experimentation not
With conversion intermediate receptacle, the workload of experimenter is reduced, simplify operation sequence, reduced because transformation intermediate receptacle institute
The error brought, improves the accuracy rate of experimental result.
Description of the drawings
Fig. 1 is the structural representation for simulating clipper.
Fig. 2 is the structural representation of secured adjusted piece.
Fig. 3 is the structural representation of non-secured adjusted piece.
Fig. 4 is the structural representation of differential head.
Fig. 5 is the shear viscosity chart board Making programme figure for simulating clipper.
Fig. 6 is that rock core physical model prepared by the present invention carries out the poly- flow chart for driving experiment.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described further：
A kind of manufacture method of the rock core physical model of the injection that can realize becoming sticky, specifically includes following steps：
1st, the making of clipper is simulated：
As shown in Figure 1：Inlet opening 2 and liquid outlet 8 are respectively provided with the arranged on left and right sides wall of a cuboid container 1, and
Its left side wall is leaned in cuboid container 1 and base plate arranges a square container 3, the height of the square container 3 is less than
The height of cuboid container 1, is welded and fixed adjustment sheet 4, with reference to shown in Fig. 2 in the right openings of square container 3：The fixation is adjusted
Uniform some rectangles, square or manhole 41 on nodal plate 4；On-fixed is fitted with the right flank of secured adjusted piece 4 to adjust
Nodal plate 5, with reference to shown in Fig. 3：The height of on-fixed adjustment sheet 5 is less than the height of cuboid container 1, more than square container 3
Highly, its width is equal with the width of cuboid container inner chamber, and the both sides of on-fixed adjustment sheet 5 are respectively provided with along the longitudinal direction of its body
Two longitudinal rails 6 are fixed in through hole 52, cuboid container 1, two guide rails 6 are each passed through two through holes 52；On-fixed is adjusted
The upper surface middle setting fixed slot 51 of piece 5, with reference to shown in Fig. 4：In the measuring staff front end of differential head 7, locking-type plug 71 is set,
Differential head measuring staff is inserted in slot 51 through its front end plug 71 after cuboid container, rotates microdrum or the fine setting of differential head
Button, on-fixed adjustment sheet 5 is moved up and down along guide rail 6；On the part fitted with secured adjusted piece of on-fixed adjustment sheet
Several adjust through hole 53 with cloth, and these regulation through holes 53 are identical with the form and dimension of through hole 41 on secured adjusted piece, when non-solid
When nodal plate 5 of setting the tone is in the lowermost end of cuboid container 1, adjusting on through hole 53 and secured adjusted piece on on-fixed adjustment sheet
Through hole 41 or so is overlapped, and is moved as on-fixed adjustment sheet 5 is progressively upper, and through hole 41 is raised with on-fixed adjustment sheet on secured adjusted piece
The section mutual dislocation of through hole 53, until through hole 41 covers reality by on-fixed adjustment sheet 5；
2nd, the shear viscosity chart board for simulating clipper makes：
The polymer mother liquor of different molecular weight is prepared, as shown in Figure 5：By the polymer mother liquor device of different molecular weight not
With piston container 20 in, be that piston container 20 provides liquid seepage power by constant-flux pump 10, by pipeline by piston container
20 are connected with simulation clipper 30 and polymer solution is flowed into in simulation clipper 30, and manually regulation differential head drives non-solid
Nodal plate of setting the tone is moved, and makes the eyelet between secured adjusted piece and on-fixed adjustment sheet misplace, by adjusting different gears,
The polymer solution sample sheared by different eyelets is collected, its viscosity is determined, every kind of mother solution correspondence difference gear institute is formulated
The solution viscosity chart board of shearing；
3rd, the rock core physical model for laying simulation clipper makes：
With reference to shown in Fig. 6：First according to the naked rock core 40 of actual oilfield reservoir situation compacting cutting, by the arrival end of naked rock core 40
Bonding simulates clipper 30, and then the opposite side in simulation clipper 30 pastes bakelite plate 15, arranges on bakelite plate 15 and simulation
The through hole of clipper inlet opening connection, finally by naked core surface frictioning, rock core cast molding.
When carrying out poly- drive experiment, the connected mode of whole experimental provision is as shown in Figure 6：Get out rock core physical model and gather
Polymer solution, polymer solution is poured in piston container 20, then constant-flux pump 10 is connected with piston container 20 by pipeline
Connect, liquid is made polymer solution flow into just by the liquid in piston container 20 by constant-flux pump 10 by pipeline and liquid flowing valve
In cube container, the size that eyelet staggers on two adjustment sheets is adjusted according to specific requirement of the experiment to solution viscosity, sheared
Polymer solution be flowed in rock core by liquid outlet and carry out displacement test.
Claims (1)
1. a kind of manufacture method of the rock core physical model of the injection that can realize becoming sticky, including the polymer for preparing different molecular weight
Mother solution, by the polymer mother liquor device of different molecular weight in different piston containers, is provided by constant-flux pump for piston container
Liquid seepage power, it is characterised in that：
（1）, simulation clipper making：
Inlet opening and liquid outlet are respectively provided with the arranged on left and right sides wall of a cuboid container, and are leaned in cuboid container
One square container is set by its left side wall and base plate, the height of the square container is less than the height of cuboid container, just
Adjustment sheet is welded and fixed in the right openings of cube container, uniform some rectangles, square or circle on the secured adjusted piece
Through hole；On-fixed adjustment sheet is fitted with the right flank of secured adjusted piece, the height of on-fixed adjustment sheet is less than cuboid container
Height, more than the height of square container, its width is equal with the width of cuboid container inner chamber, on-fixed adjustment sheet both sides
It is respectively provided with along the longitudinally through hole of its body, two longitudinal rails is fixed in cuboid container, two guide rails is each passed through two and passes through
Through hole；The upper surface middle setting fixed slot of on-fixed adjustment sheet, in the measuring staff front end of differential head locking-type plug, differential are arranged
Head measuring staff is inserted in slot through its front end plug after cuboid container, rotates the microdrum or fine setting button of differential head, on-fixed
Adjustment sheet is moved up and down along guide rail；Uniform several regulations on the part fitted with secured adjusted piece of on-fixed adjustment sheet
Through hole, these regulation through holes are identical with the form and dimension of through hole on secured adjusted piece, when on-fixed adjustment sheet is in cuboid
During the lowermost end of container, through hole and the through hole on secured adjusted piece or so overlapping is adjusted on on-fixed adjustment sheet, with non-solid
Nodal plate of setting the tone is progressively upper to be moved, and through hole mutual dislocation is adjusted on through hole and on-fixed adjustment sheet on secured adjusted piece, until fixed adjust
Through hole on nodal plate is closed；
（2）, simulation clipper shear viscosity chart board make：
Piston container is connected with simulation clipper by pipeline and polymer solution is flowed into in simulation clipper, adjusted manually
Section differential head drives the movement of on-fixed adjustment sheet, makes the eyelet between secured adjusted piece and on-fixed adjustment sheet misplace, and leads to
Different gears are overregulated, the polymer solution sample sheared by different eyelets is collected, its viscosity is determined, every kind of mother is formulated
The solution viscosity chart board that liquid correspondence difference gear is sheared；
（3）, lay simulation clipper rock core physical model make：
First according to the naked rock core of actual oilfield reservoir situation compacting cutting, naked core entry end bonding is simulated into clipper, then
Bakelite plate is pasted in the opposite side of simulation clipper, finally by naked core surface frictioning, rock core cast molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505881.7A CN105067408B (en) | 2015-08-18 | 2015-08-18 | Core physical model production method capable of achieving variable-viscosity injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510505881.7A CN105067408B (en) | 2015-08-18 | 2015-08-18 | Core physical model production method capable of achieving variable-viscosity injection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105067408A CN105067408A (en) | 2015-11-18 |
| CN105067408B true CN105067408B (en) | 2017-04-12 |
Family
ID=54496832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510505881.7A Expired - Fee Related CN105067408B (en) | 2015-08-18 | 2015-08-18 | Core physical model production method capable of achieving variable-viscosity injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105067408B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332679B (en) * | 2015-11-26 | 2018-02-02 | 东北石油大学 | A kind of laboratory core realizes the physical simulating method of thermal process |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977469A (en) * | 1975-02-03 | 1976-08-31 | Shell Oil Company | Conservation of water for core flow |
| US4580627A (en) * | 1981-06-19 | 1986-04-08 | Marathon Oil Company | Oil recovery process and system |
| CN102221514B (en) * | 2010-12-13 | 2013-04-10 | 中国石油化工股份有限公司 | Joint testing device and method of rheological property of polymer solution and relative permeability of core |
| CN202064919U (en) * | 2011-03-02 | 2011-12-07 | 中国海洋石油总公司 | Integrated equipment for simulating shearing of polymer solution |
| CN202560191U (en) * | 2012-05-02 | 2012-11-28 | 东北石油大学 | High-pressure sealed middle piston container for indoor oil displacement experiments |
| CN103778841B (en) * | 2012-10-26 | 2016-01-06 | 中国石油化工股份有限公司 | True core microvisual model method for making |
| CN103437745B (en) * | 2013-07-31 | 2017-03-01 | 中国海洋石油总公司 | Experimental provision and its sandpack column that replica polymerization thing affects on Container Rock Sanding and sand controlling result |
| CN104777273B (en) * | 2015-04-20 | 2017-03-22 | 西南石油大学 | Third-order shear method for determining performance parameter of polymer solution for oil displacement |
-
2015
- 2015-08-18 CN CN201510505881.7A patent/CN105067408B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN105067408A (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105114062B (en) | Experimental device and experimental method for simulating seepage law of low-permeability horizontal well | |
| CN104568678B (en) | HTHP acid gas reservoir gas-liquid sulphur phase percolation curve test device and method | |
| CN106121601B (en) | A kind of foam flooding physical simulating device and method | |
| CN105424438B (en) | Needle enters the uniform curing sand sample preparation device of microorganism and its method for making sample of formula | |
| CN103760087B (en) | For the permeability apparatus of the continuous pressurization of Seepage of Rock Masses test | |
| CN105422079B (en) | Dynamic and visual observation device for displacement test | |
| CN203742571U (en) | Experimental device used for manufacturing foam for oil displacement under different pressure conditions | |
| CN206311468U (en) | Evaluate the experimental provision of grain-type water shutoff agent migration ability | |
| CN103674593B (en) | A kind of device and method for simulating the flood pot test of low permeability reservoir pressure break straight well | |
| CN104695938A (en) | Experimental device and method for mechanical sealing through ball sealers | |
| CN105067408B (en) | Core physical model production method capable of achieving variable-viscosity injection | |
| CN203732406U (en) | Permeation device capable of continuously pressurizing and used for rock mass seepage test | |
| CN103541730A (en) | Fluid expulsion saturating device for large-size physical model and displacement experiment system thereof | |
| CN108825221A (en) | Homogeneous and heterogeneous thick oil pay remaining oil distribution detection device and method in layer | |
| CN202421016U (en) | Experimental device for simulating seepage process of polymer solution in stratum | |
| CN109372476A (en) | A kind of production method of multi-functional fracture hole oil reservoir injecting physical model | |
| CN104989348B (en) | A kind of sub-prime dispenser and method of simulation field test | |
| CN105044293B (en) | Polymer becomes sticky injection device and use this device to carry out becoming sticky the method for experiment | |
| CN201555697U (en) | High-pressure and flow control plugging experimental instrument | |
| CN105096718A (en) | Test method and model for simulating anti-seepage curtain of reservoir dam | |
| CN104712295A (en) | Visual horizontal well oil deposit sand filling physical model and system | |
| CN206876464U (en) | A kind of compact rock core can low-frequency vibration vacuumize saturation device | |
| CN104895562A (en) | Production device and method for simulating horizontal well shaft in transparent core | |
| CN104880348A (en) | Preparation device and preparation method of structure containing pores and fissures in rock mass | |
| CN106383220B (en) | The determination method and system of laboratory experiment non-newtonian fluid injection rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20200818 |