CN108643894A - Three-dimensional oil reservoir physical model tomography setting method - Google Patents
Three-dimensional oil reservoir physical model tomography setting method Download PDFInfo
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- 238000003325 tomography Methods 0.000 title claims abstract description 147
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- 239000000203 mixture Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 14
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- E—FIXED CONSTRUCTIONS
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- 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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- 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
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Abstract
The present invention provides a kind of three-dimensional oil reservoir physical model tomography setting method, three-dimensional oil reservoir physical model tomography setting method is in including the following steps：Physical models of reservoir interrupting layer is designed according to practical oil reservoir tomography distribution characteristics first, then the tomography in model is subdivided into multiple fault planes；Satisfactory natural stratum rock is screened according to the physical parameter of practical oil reservoir；It makes the size for simulating the small sillar of fault plane and determines the quantity of small sillar；By the small rock of raw material cutting processing square or the small sillar of polyhedron；The small sillar of polyhedron or the small sillar of square are bonded successively and form complete tomography entirety sillar；Multiple tomography entirety sillars are bonded together to form tomography large-scale model mutually according to the distributing position of each tomography in physical models of reservoir by the small sillar of multiple squares.Compared to the prior art can not accurate simulation intercalated state defect, the present invention accurately simulates influence of the tomography to the percolation law or more complicated tomography of fluid to fluid percolation law.
Description
Technical field
The present invention relates to oil-gas field development technical fields, and in particular to a kind of three-dimensional oil reservoir physical model tomography setting side
Method.
Background technology
Tomography is the construction that apparent displacement occurs along the plane of fracture for rock stratum, is most important geological structure in fault block oil reservoir.It is disconnected
Block oil reservoir is a kind of oil reservoir that critical role is accounted in China's oil field development, in many garden basin oil reservoirs of east China, is broken
Block oil reservoir occupies leading position.In Complex Fault Block Oil Reservoir, such as Well Shengke-1, tomography develops, constructs complexity very much, and
And the size and shape of fault block oil reservoir is widely different, increases the difficulty of fault block oil reservoir exploitation.Tomography can both be dredged as oil gas
The channel led, while the injection-production relation of well pattern can be influenced again.Currently, passing through the spectral decomposition under being combined based on well shake
A variety of geophysical prospecting technologies such as technology, earthquake curvature attributes analytical technology, coherent analysis technology and three color frequency mixing techniques carry out tomography essence
Thin identification and description especially comprehensively utilize the data such as drilling well, well logging, earthquake, dynamic to small in fault block oil reservoir reservoir
The description method of tomography is also more and more ripe.Therefore, as the understanding to tomography is more and more deep, the combination of oil reservoir interrupting layer
Form becomes increasingly complex.
Currently, reservoir physical simulation method have become Study of Fluid percolation law in porous media main method it
One, flow event that can be in equivalent simulation target reservoir, to instruct oil field development to put into practice.Therefore, in order to using oil reservoir
Physical simulating method studies influence of the fault block oil reservoir interrupting layer to percolation law it may first have to obtain physical model interrupting layer and build
Vertical effective ways, and it is the most key be to make meet target reservoir tomography distribution characteristics and meet research need it is disconnected
Layer physical model.Especially when fault tectonic complexity in oil reservoir, higher is proposed to reservoir model interrupting layer method for building up
Requirement.But not previously finding more successful complicated fault reservoir physical simulation research report, one of reason is experiment
Room is difficult to make the fault combination model for meeting reservoir modeling requirement under existence conditions.
The method for building up of physical models of reservoir interrupting layer method for building up and physical model is in close relations.Currently, oil-gas reservoir object
There are mainly four types of methods for the foundation of reason model.One is directly making model using the reservoir core obtained in drilling process；Two
It is laser engraving method or the microphysics model that chemical etching method makes；Third, mixing nothing by natural rock powder or quartz sand
Machine or organic adhesive are through physical model made of die casting or sintering；Fourth, the back-up sand mould being compacted using quartz sand or bead
Type.It is difficult to set up tomography in first and second class model, third and fourth class manikin interrupting layer method for building up is mainly model system
Before making process, in advance in poly (methyl methacrylate) plate or metallic plate embedment quartz sand or bead.It is buried in advance during modelling
Enter to the poly (methyl methacrylate) plate or metallic plate in quartz sand or bead, can be subjected to displacement in model die casting or compacting process,
Cause model interrupting layer position and co-hade etc. not to meet practical oil reservoir tomography form, especially makes sintering
Glass plate is likely due to the thawing deformation of temperature height when model, and Sintering Model is caused to be damaged.Recognize simultaneously with to oil reservoir tomography
Knowledge degree is higher and higher, and the distribution of tomography and combining form become increasingly complex, and is embedded to poly (methyl methacrylate) plate or metallic plate is unable to mould
Intend complicated tomography form.More importantly glass plate or metallic plate are impervious, and fluid can not possibly pass through, and in reality
There are closing, semiclosed or three kinds of states of unlatching in oil reservoir interrupting layer.The closure of tomography refers to that tomography blocks formation fluid
And ability of the fluid neuron network by tomography is prevented, and fault sealing property is there are aeolotropic characteristics, i.e., tomography is not spatially
It is variant with position closure；Same fault is also variant in different depth closure.Closed fault fault block fluid on both sides
It is incommutable, the case where glass plate or metallic plate can preferably simulate closed fault；But it is disconnected for semiclosed or unlatching
Layer, fluid can be in tomography both sides and vertical upper seepage flow, and glass plate or metallic plate cannot simulate half envelope in physical model
Close or open influence of the tomography to percolation law.
Invention content
The purpose of the present invention provides a kind of three-dimensional oil reservoir physical model tomography setting aiming at the defect of the prior art
Method, the accurate influence of influence or more complicated tomography to fluid percolation law for simulating tomography to the percolation law of fluid.
The present invention provides a kind of three-dimensional oil reservoir physical model tomography setting methods, including, feature is in three-dimensional oil reservoir object
Reason model tomography setting method is in including the following steps：
A. physical models of reservoir interrupting layer is designed according to practical oil reservoir tomography distribution characteristics first, then is based on discretization
Tomography in model is subdivided into the fault plane in reservoir model between multiple small sillars by thought；
B. it is met the requirements the natural stratum rock of (physical parameter is matched) according to the screening of the physical parameter of practical oil reservoir,
As the raw material for making reservoir model tomography sillar；
C. the size and discrete way according to similarity criterion and diminution ratio-dependent reservoir model interrupting layer；According to tomography
Discrete way, fault region size determine the quantity for making size and small sillar for simulating the small sillar of fault plane；
D. raw material are cut into the small sillar of the identical square of multiple length of sides, according to the specific form of contact surface,
Selectively by part for simulating the small sillar of square of fault plane according to specified fault strike angle, size and distribution side
Formula further cuts into the small sillar of irregular polyhedron；
E. it is bonded according to corresponding bonding way according to the different permeability of each tomography and simulates contact surface in the fault plane
The small sillar of polyhedron facing each other or the small sillar of square；The small sillar of multipair polyhedron for pasting completion or just
The small sillar of cube will simulate the small sillar of polyhedron in non-contact face or pros in fault plane again after being bonded together according to order
The small sillar of body is adhered to successively on the outside of the small sillar of polyhedron or the small sillar of square in simulating contact face, is formed complete
Tomography entirety sillar；
F. by the small sillar of multiple squares by multiple tomography entirety sillars according in physical models of reservoir each tomography point
Cloth position is bonded together to form tomography large-scale model mutually.
In above-mentioned technical proposal, in step e, for impermeable tomography, in bonding, two relative engagements simulate the more of its
Binder is filled completely on the surface that face body or the small sillar of square are in contact；
For the tomography with certain penetrating power, in bonding, two relative engagements simulate its polyhedron or just
Topical application binder on the surface that the small sillar of cube is in contact ensures that there is be not coated on contact surface between above-mentioned two sillar
The size in the region of glue, non-gluing solution region is determined according to the penetrating power of tomography.
In above-mentioned technical proposal, the FAULT MODEL discrete way of different angle is different, for breaking both horizontally and vertically
Level, the discrete characterization of contact surface of the directly available small sillar outer surface of two squares in physical model；For inclined tomography
Face, in the small sillar of irregular polyhedron, the surface with certain angle is come discrete characterization in physical model, for more
Complicated or a plurality of fault plane need to use the discrete way of horizontal plane, vertical plane and inclined surface combination.
In above-mentioned technical proposal, multiple tomography entirety sillars are pressed according to the position at its place in physical model in step f
It is bonded successively according to from lower upper, sequence from left to right and forms tomography large-scale model.
In above-mentioned technical proposal, during making small sillar, any length of side of each small sillar and the error of angle are all
No more than 2%.
In above-mentioned technical proposal, conformed to according to the screening of the physical parameters such as practical reservoir pore degree, permeability in step b
The natural stratum rock asked requires the formation rock selected as the raw material for making reservoir model sillar in screening process
It is cementing cannot be excessively loose, be easy to cut, and non-breakable in cutting process, while ensureing that the physical property distribution of rock is equal
It is even.
In above-mentioned technical proposal, first according to length and width, the thickness of studied oil reservoir unit in step a, according to certain
Similarity numbers establish three-dimensional oil reservoir physical model so that the three-dimensional physical model of design keeps geometric dimension with studied oil reservoir
It is similar, i.e.,：
π1=(Lx/Ly)|Oil reservoir=(Lx/Ly)|Model, π2=(Lx/Lz)|Oil reservoir=(Lx/Lz)|Model,
Wherein Lx、Ly、LzIndicate length and width, the thickness of model or oil reservoir unit；1 π 2 of π are similarity factor；
The length and width ratio of three-dimensional oil reservoir physical model interrupting layer can be arranged according to similarity numbers π 1, fault length and width
Degree diminution ratio is arranged according to the size reduction proportionality coefficient a of physical model and practical reservoir model
A=Lx|Model/Lx|Oil reservoir。
In above-mentioned technical proposal, step d further includes
According to tomography form and tomography in physical model position, and according to the discrete requirement of tomography, determine constituent
Manage the required small sillar of model interrupting layer, and to for establish have the small sillar of the polyhedron of the inclined fault of certain angle into
Row number；
Step e further includes the number in the sillar step d after processing is cut, using special bonding way according to one
The tomography designed in physical model can be obtained after completing the bonding of all small sillars of tomography in fixed order bonding.
The invention enables the percolation laws and development process using fluid under the conditions of physical analogy means research complicated fault
It is possibly realized.Multiple and different geometric shape sillars are bonded according to certain sequence in the present invention, can be formed arbitrary angle, be walked
To tomography, arbitrary scale and any number of tomography；The closure of tomography can be controlled arbitrarily；Tomography is established and physics mould
Type manufacturing process has synchronism；Sillar cutting technique can guarantee the required precision of tomography setting.The present invention by sillar it
Between different bonding way, effectively simulate the different permeability of tomography, further the accurate attribute of simulation complicated fault.
The present invention is applicable not only to oil field development research field, can also for other research fields related with percolation phenomenon use and
With reference to, such as coal mining, hydraulic engineering research etc.
Description of the drawings
Fig. 1 is different type tomography sillar processing cutting mode schematic diagram；
Fig. 2 is vertical fault sillar combination schematic diagram；
Fig. 3 A are normal fault sillar combination schematic diagrames；
Fig. 3 B are reversed fault sillar combinations；
Fig. 4 A are vertical fault bonding plane schematic diagrames；
Fig. 4 B are inclined fault bonding plane schematic diagrames；
Fig. 5 is sillar discrete vertical view when fault strike is not parallel with oil reservoir unit
Fig. 6 A are sealing fault sillar contact surface bonding way schematic diagrames；
Fig. 6 B are lateral communication tomography sillar contact surface bonding way schematic diagrames；
Fig. 6 C are lateral vertical connection tomography sillar contact surface bonding way schematic diagrames；
Fig. 7 is a plurality of tomography discrete way front view；
Wherein, the small sillar of 1- squares, the small sillar of 2- polyhedrons, 3- tomography entirety sillars, 4 contact surfaces, 5- fault strikes
Line, 6- fault planes.
Specific implementation mode
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this is well understood
Invention, but they do not constitute the present invention and limit.
The tomography method for building up of this invention is based on discretization three-dimensional oil reservoir physical model production method.
It is set according to similarity principle according to studying the position of fault of practical oil reservoir, type, form, combination first
The tomographies relevant parameters such as three-dimensional physical model interrupting layer position, turn-off and inclination angle are counted, then press selected natural outcrop rock
Make the small sillar of different three-dimensional shapes according to form cutting of the tomography in physical model, vertical fault available standards in model
Small 1 surface of sillar of square indicate that the slantwise fault interface 6 of simulation certain angle then presses the small sillar of square 1 in model
It is indicated with cut surface after further being cut according to inclination angle, as shown in Figure 1.
Then by the sillar of all composition tomographies, bonding way combines in certain sequence and specifically again, such as Fig. 2
Shown foundation is the tomography of vertical direction, and the face of the contact between two disk sillars of left and right is characterized as in three-dimensional physical model
Fault plane 6, the sillar for such as forming tomography is cut according to mode in Figure 1B, then can be produced with one after bonding combination
The normal fault or reversed fault at constant inclination angle, as shown in figure 3, the combination of the fault plane 6 of sillar is as shown in Figure 4 in physical model.
It, also will be to just in tomography manufacturing process when as not parallel with oil reservoir elementary boundary such as practical oil reservoir interrupting layer trend
The small sillar of cube 1 is according to moving towards angle further processing cutting, sillar discrete way as shown in Figure 5, and thus the trend of tomography exists
It can arbitrarily be controlled in physical model manufacturing process.
Different types of a plurality of tomography can be composed of multiple contact surfaces 4 in reservoir model, the inclination angle of model interrupting layer
It can arbitrarily be controlled according to the tomography form of practical oil reservoir with the development length of tomography, it therefore, can be in three-dimensional physical model simultaneously
It establishes two tomographies of normal fault and reversed fault and establishes the normal fault or reversed fault of a plurality of different angle.
Figure 4, it is seen that there is small sillar different cutting modes to add such as the tomography being vertically oriented in oil reservoir
The small sillar of work is square, and if oil reservoir tomography is there are certain angle of inclination, small sillar where model interrupting layer is being processed
Shi Bixu is cut according to the angle of inclination of tomography, but the small sillar of other positions is still square in physical model.
Sillar where all tomographies in physical model is combined, so that it may to form different development lengths, inhomogeneity
The tomography of type, different turn-offs and different angle.Between two layers small sillar where tomography with selected glue (epoxy resin) according to
Scheduled sequence is combined using special bonding mode, according to the closure of oil reservoir tomography, the bonding side between sillar
Formula is different.
The bonding way between the different small sillars of fault sealing property condition is illustrated by taking vertical fault as an example, if studied
The tomography of oil reservoir is completely enclosed, i.e., tomography has strong plugging action on vertical or lateral to fluid, using attached drawing 6A institutes
The bonding way shown, the whole coating glues of contact surface between two plots of sillars, fluid is to be unable to seepage flow to pass through coated face；Such as oil reservoir
Tomography is semiclosed or opens, using the bonding way of Fig. 6 B, 6C, the uncoated glue in 4 subregion of contact surface between sillar,
Fluid can be with seepage flow by rubberized contact face 4 between sillar, and the size of the sealing ability of tomography can be not coated with contact surface between sillar 4
The area of cloth glue controls, and sillar coated face can be lateral with the parallel tree lace beam control system of netted tree lace or vertical direction
Connection or side, vertical connection.The bonding way in Fig. 6 B is such as used, then can form the tomography of lateral communication, such as uses Fig. 6 C
In bonding way, then can form the lateral or vertical upper tomography being connected to.Black portions expression is coated in Fig. 6 A, 6B, 6C
Glue.
Simultaneously can also integrated application Fig. 6 A, 6B, 6C bonding way, characterize the heterogeneous feature of oil reservoir fault sealing property,
The case where i.e. tomography is partially enclosed, partial penetration.Similarly, for the closed state of forward and inverse tomography in oil reservoir, class can also be used
As bonding way handle.
Because above-mentioned 3 D Oil Reservoir Model interrupting layer is bonded by the small sillar contact surface 4 of several different three-dimensional shapes
It is composed, the development length of reservoir model interrupting layer, inclination angle, combination are arbitrarily controllable, and the closure of tomography is by two
4 glue-coating mode of contact surface determines between a sillar, so can be referred to as the controllable tomography of discretization closure.
The present invention provides a kind of three-dimensional oil reservoir physical model tomography setting methods, are as follows：
A. physical models of reservoir interrupting layer is designed according to practical oil reservoir tomography distribution characteristics first, then is based on discretization
Tomography in model is subdivided into the fault plane 6 in reservoir model between multiple small sillars by thought；The cutting side of each pair of small sillar
Formula and the angle of fault plane 6 are determined that 6 discrete way of FAULT MODEL fault plane of different angle is not by the location of grid block
Together, for the tomography of vertical direction, the contact surface 4 of directly available small 1 outer surface of sillar of square is as discrete in physical model
Characterization；For inclined normal fault or reversed fault, in physical model in the small sillar of irregular polyhedron 2 with certain
Discrete characterization is carried out on the surface of angle, as shown in Figure 1B, for a plurality of tomography, need to use the discrete way of multiple inclined surface combination,
As shown in Figure 7.
When modelling, first according to length and width, the thickness of studied oil reservoir unit, built according to certain phase similarity numbers
Vertical three-dimensional oil reservoir physical model so that the three-dimensional physical model of design keeps geometric dimension similar to studied oil reservoir, i.e.,：
π1=(Lx/Ly)|Oil reservoir=(Lx/Ly)|Model, π2=(Lx/Lz)|Oil reservoir=(Lx/Lz)|Model,
The length and width ratio of three-dimensional oil reservoir physical model interrupting layer can be arranged according to similarity numbers π 1, fault length and width
Degree diminution ratio is arranged according to the size reduction proportionality coefficient a of physical model and practical reservoir model
A=Lx|Model/Lx|Oil reservoir
Trend, tendency and the inclination angle of three-dimensional physical model interrupting layer are consistent with practical oil reservoir interrupting layer.
It the position in three-dimensional oil reservoir physical model of tomography can be according to practical oil reservoir interrupting layer with respect to oil reservoir elementary boundary
Position determine, calculate relative distance according to proportionality coefficient a is reduced.
Physical model, which interrupts inclination layer and fault pattern setting, to be arranged according to angle in practical oil reservoir and item number.Such as
The quantity of tomography is more inside oil reservoir, the influence for finer study of fault to percolation law, the 3 D Oil Reservoir Model of making
Geometric dimension increase therewith accordingly.
Based on the three-dimensional oil reservoir FAULT MODEL that the above principle is established, tomography form, feature and practical oil reservoir are completely similar,
The obtained percolation law of PHYSICAL MODELING OF IN can really reflect the influence of the percolation law of practical oil reservoir interrupting layer pair.
B. it is met the requirements the natural stratum rock of (physical parameter is matched) according to the screening of the physical parameter of practical oil reservoir,
As the raw material for making reservoir model tomography sillar；
Satisfactory natural stratum rock is screened according to physical parameters such as practical reservoir pore degree, permeabilities, as system
Make the raw material of reservoir model sillar, requires the formation rock selected is cementing cannot be excessively loose in screening process, be easy to cut
It cuts, and non-breakable in cutting process, while ensureing that the physical property of rock is evenly distributed
C. the size and discrete way according to similarity criterion and diminution ratio-dependent reservoir model interrupting layer；According to tomography
Discrete way, fault region size determine the quantity for making size and small sillar for 4 small sillar of simulating contact face；It makes
During small sillar, any length of side of each small sillar and the error of angle are no more than 2%；
D. raw material are cut into the small sillar of the identical square of multiple length of sides, according to the specific shape of contact surface 4
Part is selectively used for the small sillar 1 of square in simulating contact face 4 according to specified fault strike angle, size and divided by state
Mode for cloth further cuts into the small sillar of irregular polyhedron 2；Such as simulate vertical fault and fault strike and reservoir boundary
It is parallel, then all sillars need to be only processed into the square of standard, as tomography has certain inclination angle or fault strike and oil reservoir
Boundary is not parallel, then according to the angles and positions in departure process to require that the small sillar of square 1 is further processed and cut,
Simultaneously according to tomography form and tomography in physical model position, and according to the discrete requirement of tomography, determine group
At the required small sillar of physical model interrupting layer, and to having the small rock of the polyhedron of the inclined fault of certain angle for establishing
Block 2 is numbered；
E. the sillar after processing cutting is viscous according to certain order using special bonding way according to number before
It connects, after completing the bonding of all small sillars of tomography, the tomography designed in physical model can be obtained；
It wherein is bonded to simulate in the contact area according to corresponding bonding way according to the different permeability of each tomography and connect
The small sillar of polyhedron facing each other or the small sillar of square of contacting surface 4；
For impermeable tomography, in bonding, two relative engagements simulate its polyhedron or the small sillar phase of square
Binder is filled completely on the surface of contact；
For the tomography with certain penetrating power, in bonding, two relative engagements simulate its polyhedron or just
Topical application binder on the surface that the small sillar of cube is in contact ensures that there is not on contact surface 4 between the small sillar of above-mentioned two
The size in the region of gluing solution, non-gluing solution region is determined according to the penetrating power of tomography；
After the small sillar of multipair polyhedron or the small sillar of square of pasting completion are bonded together according to order, then will
The small sillar of the polyhedron in non-contact face or the small sillar of square are adhered to simulating contact face 4 successively in simulating contact region
The small sillar of polyhedron or the small sillar of square on the outside of, form complete tomography entirety sillar；
F. by the small sillar of multiple squares by multiple tomography entirety sillars according in physical models of reservoir each tomography point
Cloth position is bonded together to form tomography large-scale model mutually；
Multiple tomography entirety sillars according to its in physical model where position according to from lower upper, from left to right
Bonding forms tomography large-scale model to sequence successively.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (7)
1. a kind of three-dimensional oil reservoir physical model tomography setting method, feature is in including the following steps：
A. physical models of reservoir interrupting layer is designed according to practical oil reservoir tomography distribution characteristics first, then is based on discretization thought,
Tomography in model is subdivided into the fault plane in reservoir model between multiple small sillars；
B. the matched natural stratum rock of physical parameter is screened according to the physical parameter of practical oil reservoir, it is disconnected as reservoir model is made
The raw material of layer sillar；
C. the size and discrete way according to similarity criterion and diminution ratio-dependent reservoir model interrupting layer；According to the discrete side of tomography
Formula, fault region size determine the quantity for making size and small sillar for the small sillar in simulating contact region；
D. raw material are cut into the small sillar of the identical square of multiple length of sides, according to the specific form of contact area, choosing
Selecting property by part for simulate the small sillar of square of fault plane according to specified fault strike angle, size and distribution mode into
One step cuts into the small sillar of irregular polyhedron；
E. it is bonded according to corresponding bonding way according to the different permeability of each tomography and simulates contact area in the fault plane
The small sillar of polyhedron facing each other or the small sillar of square；The small sillar of multipair polyhedron or square for pasting completion
Small sillar is small by the small sillar of polyhedron or square that simulate non-contact area in fault plane again after being bonded together according to order
Sillar is adhered to successively on the outside of the small sillar of polyhedron or the small sillar of square in simulating contact face, and it is whole to form complete tomography
Sillar；
For impermeable tomography, in bonding two relative engagements simulate its polyhedron or the small sillar of square be in contact
Binder is filled on surface completely；
For the tomography with certain penetrating power, in bonding two relative engagements simulate its polyhedron or square it is small
Topical application binder on the surface that sillar is in contact ensures that there is non-gluing solutions on contact surface between the small sillar of above-mentioned two
The size in region, non-gluing solution region is determined according to the penetrating power of tomography；
F. by the small sillar of multiple squares by each section of tomography entirety sillar according to the distribution position of each tomography in physical models of reservoir
It sets and is bonded together to form tomography large-scale model mutually.
2. three-dimensional oil reservoir physical model tomography setting method according to claim 1, which is characterized in that different angle is broken
Layer model discrete way is different, and for fault plane both horizontally and vertically, directly available two squares are small in physical model
The discrete characterization of contact surface of sillar outer surface；For inclined fault plane, with the small rock of irregular polyhedron in physical model
Discrete characterization is carried out on the surface with certain angle in block, for more complicated or a plurality of fault plane, need to use horizontal plane, vertical plane
With the discrete way of inclined surface combination.
3. three-dimensional oil reservoir physical model tomography setting method according to claim 1, which is characterized in that multiple in step f
Tomography entirety sillar is bonded shape successively according to the position at its place in physical model according to from lower upper, sequence from left to right
At tomography large-scale model.
4. three-dimensional oil reservoir physical model tomography setting method according to claim 1, it is characterised in that making small sillar
During, any length of side of each small sillar and the error of angle are no more than 2%.
5. three-dimensional oil reservoir physical model tomography setting method according to claim 1, it is characterised in that according to reality in step b
The physical parameters such as border reservoir pore degree, permeability screen satisfactory natural stratum rock, as making reservoir model sillar
Raw material, require the formation rock selected is cementing cannot be excessively loose in screening process, be easy to cut, and cutting process
In it is non-breakable, while ensureing that the physical property of rock is evenly distributed.
6. three-dimensional oil reservoir physical model tomography setting method according to claim 1, it is characterised in that root first in step a
According to length and width, the thickness of studied oil reservoir unit, three-dimensional oil reservoir physical model is established according to certain phase similarity numbers so that set
The three-dimensional physical model of meter keeps geometric dimension similar to studied oil reservoir, i.e.,：
π1=(Lx/Ly)|Oil reservoir=(Lx/Ly)|Model, π2=(Lx/Lz)|Oil reservoir=(Lx/Lz)|Model
Wherein Lx、Ly、LzIndicate length and width, the thickness of model or oil reservoir unit；1 π 2 of π are similarity factor；
The length and width ratio of three-dimensional oil reservoir physical model interrupting layer can be according to similarity numbers π1It is arranged, fault length and reduced width
Ratio is arranged according to the size reduction proportionality coefficient a of physical model and practical reservoir model
A=Lx|Model/Lx|Oil reservoir。
7. three-dimensional oil reservoir physical model tomography setting method according to claim 1, it is characterised in that step d further includes
According to tomography form and tomography in physical model position, and according to the discrete requirement of tomography, determine composition physics mould
The required small sillar of type interrupting layer, and to thering is the small sillar of the polyhedron of the inclined fault of certain angle to compile for establishing
Number；
Step e further include processing cut after sillar according to number before, using special bonding way according to certain
Order is bonded, and after completing the bonding of all small sillars of tomography, the tomography designed in physical model can be obtained.
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