CN105261282B - Unconformity onlap oil-gas reservoir physical simulation experiment device and experimental method - Google Patents
Unconformity onlap oil-gas reservoir physical simulation experiment device and experimental method Download PDFInfo
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- CN105261282B CN105261282B CN201510800412.8A CN201510800412A CN105261282B CN 105261282 B CN105261282 B CN 105261282B CN 201510800412 A CN201510800412 A CN 201510800412A CN 105261282 B CN105261282 B CN 105261282B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
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- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
The present invention relates to a kind of unconformity onlap oil-gas reservoir physical simulation experiment device and experimental method, the experimental provision includes ground layer box body, the unconformity nacelle below ground layer box body and the top plate above ground layer box body；Described ground layer box body includes the simulating chamber of multilayer independence, and the length of lower floor's simulating chamber is less than the length of upper strata simulating chamber, and every layer of simulating chamber contacts connection with unconformity nacelle；Hole is equipped with the side plate and the top plate of unconformity nacelle that every layer of simulating chamber contacts with unconformity nacelle, the bottom of the every layer simulating chamber side plate relative with the side plate is equipped with the oil filler point being connected with infusion fluid systems；Be provided with multiple permeability baffle plates in unconformity nacelle, unconformity nacelle is divided into and simulating chamber quantity identical cabin unit, and simulating chamber and cabin unit one-to-one corresponding by permeability baffle plate.The present invention is to realize gas accumulation process in stratum of the simulation under plane of unconformity onlap, analyze unconformity onlap hydrocarbon reservoiring mechanism and governing factor, in-depth provides foundation to the stratum Hydrocarbon Formation Reservoirs origin cause of formation and the understanding of oil-gas distribution for the oil-gas exploration of oil-gas bearing basin.
Description
Technical field
The present invention relates to the experimental provision and experimental method of oil-gas migration and aggregation, specifically, it is related to a kind of unconformity
The physical simulating device and experimental method of onlap hydrocarbon reservoiring mechanism, by changing unconformity inclination angle and lithology to oil
The seal-off effect degree of gas, so as to which tracer onlap stratigraphic unconformity faces the control action of Gas Accumulation.
Background technology
The motion of earth's crust differential fluctuation often causes the advance and retreat of water body, is shown as on section " onlap " and " offlap " on stratum.
When water body is progressive, range of deposition gradually expands, and newer sedimentary is covered on older sedimentary, and landwards direction is expanded
Exhibition, overlap of beds is formed when being in contact with older formation erosion face with unconformity.When water body is progressive, basin gradually expands
Greatly, it deposited the preferable water of storage and collection performance along the erosion surface at deposition depression edge and enter sand body or basal conglomerate, as basin continues
Expand, water body is deepened, and onlap deposited the mud stone of poor permeability on layer of sand, and mud stone often contains organic matter, can not only be used for
Good oil source rock, while but also as good cap rock, therefore just form overlap of beds type trap.Multiple water water-break is entered
Change, can form the source-reservoir-seal assemblage of rotary type and side variant.After oil-gas generation, nearby migration or along plane of unconformity migrate to
Gathered together in stratigraphic onlap trap, form stratigraphic overlap oil-gas reservoir.
Plane of unconformity is a kind of important Dominated Factors of oil-gas bearing basin oil-gas reservoir, and plane of unconformity onlap oil-gas reservoir is stratum
A kind of genetic type of hydrocarbon reservoiring.Onlap type plane of unconformity and oil-gas pool forming process are closely related, on the one hand can conduct
Shutter body plays sealing process to oil gas, on the other hand migration pathway can be used as to carry out transporting oil gas again.With Junggar Basin
Exemplified by ground, such as 101 Donghe Sandstone oil reservoir in Lunnan Oilfield, Tarim Basin, Nw, tower, belong to the oil-gas reservoir of this type.Quasi- main officer of Tibet
The overlap unconformity oil-gas reservoir integrated distribution that your basin is formed is in In Northwestern Margin sloped region, because the rising of lake level more phases time is with
Drop, causing water to enter, sand body is superposed vertical, and the more set oil-bearing series of composition, the oil ＆ gas pool size of formation is also larger, typical case
The area south oil fields of You five.Overlap unconformity oil-gas reservoir, such as Huanghua in east China oil-gas bearing basin sloped region also extensive development
Down warping region Cheng Bei breaks, and slope is eastern to construct dune shape oil-gas reservoir, Jiyang depression Huimin sag central uplift belt the Bottom of Guantao Formation sand body oil gas
Hide etc..
Plane of unconformity has destructive effects again to the existing constructive role of oil and gas accumulation.Constructive role mainly has：
1. good passage is provided for oil-gas migration；2. improving the storage and collection performance of reservoir or Reservoir Body under plane of unconformity, create
Water enters sand body or basal conglomerate Reservoir Body on plane of unconformity；3. the upper and lower substantial amounts of unconformity trap of development of plane of unconformity；4. it is hydrocarbon source
Condition necessary to rock secondary generation of oil air lift supplies.Destructive effects show as the destruction hidden to first olefiant gas, mainly to cap rock
Destruction makes oil gas largely scatter and disappear, even partial destruction, crude oil also by by different degrees of oxidation, washing, makes light components
Loss, heavy component leave, and form viscous crude or pitch.In addition, plane of unconformity can make oil gas edge with being passed through ancient surficial fracture and being combined
Plane of unconformity, the plane of disruption migrate to earth's surface loss, make oil-gas reservoir by a certain degree of destruction.
The Chinese patent of Patent No. 201210408379.0 discloses a kind of unconformity structure body petroleum conduction advantage side
To physical simulation system and experimental method, simulation system includes the analog subsystem connected by connection subsystem and injection subsystem
System, described analog subsystem include base and the simulator being installed on base, set between the simulator and base
There is hole, base connects with being connected subsystem；The simulator be longitudinal section be in U-typed transparent vessel, simulator it is transversal
Face includes plate portion, trough-shaped portion and carinate part.The invention is mainly used in disclosing unconformity structure body oil-gas migration advantage
Direction, it is impossible to which the architectural feature and control for reflecting unconformity onlap oil-gas reservoir hide mechanism.
The Chinese patent application of Application No. 201510716261.8 discloses a kind of unconformity barrier oil-gas reservoir physics mould
Draft experiment device and experimental method, the experimental provision include oil-gas stratigraphic deposits simulator, and the oil-gas stratigraphic deposits simulator includes
Ground layer box body and the unconformity nacelle above ground layer box body, ground layer box body and the side of unconformity nacelle are connected with fracture belt
Casing, oil filler point and oil outlet difference connecting fluid injected system and fluid output system on fracture belt casing.The invention mould
Intend the gas accumulation process in the case where plane of unconformity blocks, analyze stratum unconformity barrier hydrocarbon reservoiring mechanism and governing factor.
Unconformity barrier oil-gas reservoir and unconformity onlap oil-gas reservoir are two kinds of heterogeneitys and the oil-gas stratigraphic deposits of feature, therefore this application
Patent is essentially different with the present invention.
Existing Gas Accumulation mechanism physical analogy is carried out in a big sandbox mostly, by being set up in sandbox
Different geological models, to simulate or verify some regional hydrocarbon migration and accumulation rule, it is not yet found that surpassing for plane of unconformity
The experimental provision and experimental method for covering oil-gas reservoir and designing.
The content of the invention
It is an object of the invention to overcome drawbacks described above existing for prior art and deficiency, based on onlap type plane of unconformity pair
The influence of Gas Accumulation, there is provided a kind of unconformity onlap oil-gas reservoir physical simulation experiment device and experimental method, to realize mould
Intend gas accumulation process in stratum under plane of unconformity onlap, analyze unconformity onlap hydrocarbon reservoiring mechanism and control because
Element, deepen the understanding to the stratum Hydrocarbon Formation Reservoirs origin cause of formation and oil-gas distribution, foundation provided for the oil-gas exploration of oil-gas bearing basin,
Also can be simultaneously experimental teaching service well.
According to one embodiment of the invention, there is provided a kind of unconformity onlap oil-gas reservoir physical simulation experiment device, including ground
Layer oil reservoir simulator, the oil-gas stratigraphic deposits simulator include ground layer box body, the unconformity nacelle below ground layer box body and
Top plate above ground layer box body；Described ground layer box body includes the simulating chamber of multilayer independence, and the length of lower floor's simulating chamber is less than
The length of upper strata simulating chamber, every layer of simulating chamber contact connection with unconformity nacelle；Every layer of simulating chamber contacts with unconformity nacelle
Side plate and unconformity nacelle top plate on be equipped with hole, the bottom of the every layer simulating chamber side plate relative with the side plate is all provided with
There is the oil filler point being connected with infusion fluid systems；Multiple permeability baffle plates, the permeability gear are provided with the unconformity nacelle
Plate by unconformity nacelle be divided into simulating chamber quantity identical cabin unit, and simulating chamber and cabin unit correspond.
In the experimental provision according to the above embodiment of the present invention, described ground layer box body includes three layers of independent drawer
Formula simulating chamber, slideway is provided between adjacent analog room, when needing sand loading, simulating chamber can freely pull out along slideway.Stratum case
Body is designed as three layers of simulating chamber, can fill the quartz sand of 300-1000 micron grain sizes, the scope of sand-conglomerate in representative, can be with
Significantly meet the needs of lithology combination otherness collocation.The unconformity nacelle is provided with two permeability baffle plates, by unconformity
Nacelle is divided into three cabin units, to simulate the otherness of unconformity structure on the side.
In the experimental provision according to the above embodiment of the present invention, side that every layer of simulating chamber contacts with unconformity nacelle
Plate is the glass plate with micropore, and remaining each plate is nonporous glass plate, it is ensured that the Gas Accumulation of every layer of simulating chamber is
Independent, it is unaffected each other；The aperture of micropore is 200-300 microns on side plate, the aperture to particle diameter 200 microns with
On quartz sand leakproof it is effective, but can not prevent oil, the seepage flow of gas and water, therefore oil, gas and water can pass through every layer of simulating chamber
Circulated with the side plate that unconformity nacelle contacts to unconformity nacelle, can now detect closure of the unconformity nacelle to Gas Accumulation
Effect.
In the experimental provision according to the above embodiment of the present invention, contacted in every layer of simulating chamber with unconformity nacelle
Top is equipped with fluid acquisition hole.In experimentation, fluid acquisition hole can be opened, collection fluid is tested and analyzed, led to
The Geochemical Parameters feature for comparing fluid is crossed, carrys out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example,
The Molecular biomarkers for collecting oil sample are analyzed, the geologic chromatographic effect during oil migration can be studied, from
And deepen the understanding of stratigraphic oil pool Forming Mechanism.
In the experimental provision according to the above embodiment of the present invention, the side of every layer of simulating chamber is equipped with inner concave shape handle
Hand, the design of handle can be in order to the installation and dismounting of simulating chamber.
In the experimental provision according to the above embodiment of the present invention, every layer of simulating chamber, unconformity nacelle and top plate
Top bottom surface is the curved-surface structure for rising and falling and bending, to simulate the actual form of subsurface formations.
In the experimental provision according to the above embodiment of the present invention, the unconformity nacelle includes nacelle and and nacelle
The hatchcover of connection, nacelle are provided with the slot of inserting permeability baffle plate, and the top of hatchcover is provided with switching knob.Hatchcover passes through setting
Switching knob control at the top of it, when opening switching knob, hatchcover can freely be opened around hatchcover rotary shaft, be filled out with facilitating
Sand etc. tests the needs of process.
In the experimental provision according to the above embodiment of the present invention, the top plate of the unconformity nacelle is with micropore
Glass plate, the aperture design of micropore is 200-300 microns, and fluid can freely penetrate into, and remaining side plate is nonporous glass plate,
Fluid can not penetrate into.
In the experimental provision according to the above embodiment of the present invention, the experimental provision also includes base and support,
Support is fixedly installed in one end of base, and unconformity nacelle is installed on support and base.
In the experimental provision according to the above embodiment of the present invention, the support includes being installed on stretching on base
Contracting support bar and the soft rubber protection pad positioned at scalability support bar top, soft rubber protection pad are connected with unconformity nacelle.It is logical
The height for the control handle regulation scalability support bar being arranged on scalability support bar is crossed, makes oil-gas stratigraphic deposits simulator
Variable pitch, to influence of the simulated formation occurrence to oil and gas accumulating efficiency.
It is described in the experimental provision according to the above embodiment of the present invention to ensure the visualization in experimentation
Unconformity nacelle, every layer of simulating chamber and top plate form by the glass of all-transparent, can withstand up to 10MPa operating pressure.
In the experimental provision according to the above embodiment of the present invention, the infusion fluid systems include one end and oiling
The oil hose and the pressure gauge, pressure maintaining valve and the flow instrument that are sequentially arranged on oil hose of hole connection, oil hose it is another
One end is connected with oil transportation bucket, and oil transportation bucket is connected with compression pump.The control to pressure, pressure can be achieved in the control of multiple pressure valves
Table and flow instrument play monitoring to the intensity for injecting fluid.During simulated experiment, can by the size of inlet pressure, investigate into
Control action of the mouth pressure to Gas Accumulation.
According to one embodiment of the invention, there is provided a kind of unconformity onlap oil-gas reservoir physical simulation experiment method, in use
Analogue means described in the embodiment of face, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data；
(2) unconformity nacelle is unloaded from the bottom of ground layer box body；
(3) every layer of simulating chamber is removed respectively, progress lithologic allocation, after the quartz sand for having filled requirement of experiment particle diameter, entered
Row compacting, then closes, puts back to origin-location；
(4) unconformity nacelle is opened, after the quartz sand for having filled requirement of experiment particle diameter, is compacted, is then shut off not whole
Close nacelle；
(5) ground layer box body and unconformity nacelle and top plate are connected；
(6) infusion fluid systems have been configured, the oil hose of infusion fluid systems has been connected with oil filler point；
(7) the injection pressure of requirement of experiment is regulated according to requirement of experiment, setting charge velocity starts to inject from oil filler point
Crude oil；
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, oil sample is gathered from every layer of simulating chamber；
(9) after reaching requirement of experiment, physical simulation experiment is stopped；
(10) geochemical detection is carried out to the product collected；
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
The beneficial effects of the invention are as follows：(1) the earth formation physical model of experimental provision design multilayer simulating chamber of the present invention,
The material of different lithology and degree of consolidation can be filled, with the anisotropism of simulated formation box inner structure and to oil-gas migration
Influence, so as to simulate under unconformity onlap shadow of the deposit physical difference to crude oil collection efficiency under DIFFERENT DEPOSITIONAL ENVIRONMENTS
Ring；Design unconformity nacelle, by permeability baffle plate by unconformity nacelle be divided into simulating chamber quantity identical cabin unit,
Different lithology can be filled, during simulating overlap unconformity surface side to lithology difference, the influence to oil-gas accumulation, so as to mould
Intend under the control action of plane of unconformity formation lithology and physical property to Gas Accumulation, and the reservoir characteristics closing of research unconformity onlap
The problem of limit；Experimental provision of the present invention is easy to operate, nimble light and handy, can multi-angle, the multifactor oil-gas stratigraphic deposits that show formed
Mechanism, foundation is provided for the oil-gas exploration of oil-gas bearing basin, can be good at providing experimental teaching for undergraduate and graduate etc.
Service.(2) top bottom surface of every layer of simulating chamber of experimental provision of the present invention, unconformity nacelle and top plate is both designed as the song bent that rises and falls
Face structure, to simulate the actual form of subsurface formations, it can closer descend real conditions.(3) analogue means energy of the present invention
The solid space structure of unconformity body is enough simulated, changes and traditionally plane of unconformity is described as existing for wire or planar structure
The problem of plane of unconformity influences on Gas Accumulation can not effectively be simulated.(4) experimental provision of the present invention is also devised with base and support,
By base and support bottom oil reservoir simulator variable pitch, ground layer box body occurrence (i.e. inclination angle) can be inquired into oil gas
The influence of collection efficiency.(5) experimental method of the present invention can be realized to mould in experimentation according to the control of pressure and flow
The control of plan process, and the influence of filling pressure, flow velocity to Gas Accumulation.(6) experimental provision of the present invention is 360 in appearance
All-transparent design is spent, real-time three-dimensional observes forming process and governing factor of the oil gas in plane of unconformity onlap oil reservoir, realizes three-dimensional
Visualization.
Brief description of the drawings
Accompanying drawing 1 is the structure chart of unconformity onlap oil-gas reservoir physical simulation experiment device in the embodiment of the present invention 1.
Accompanying drawing 2 is the structural representation of oil-gas stratigraphic deposits simulator of the embodiment of the present invention.
Accompanying drawing 3 is the structural representation of simulating chamber of the embodiment of the present invention I.
Accompanying drawing 4 is the structural representation of simulating chamber of the embodiment of the present invention II.
Accompanying drawing 5 is the structural representation of simulating chamber of the embodiment of the present invention III.
Accompanying drawing 6 is the structural representation of unconformity nacelle closed mode of the embodiment of the present invention.
Accompanying drawing 7 is the structural representation of unconformity nacelle open mode of the embodiment of the present invention.
Accompanying drawing 8 is the structure chart of unconformity onlap oil-gas reservoir physical simulation experiment device in the embodiment of the present invention 2.
Accompanying drawing 9 is the structural representation of the medium-height trestle of the embodiment of the present invention 2 and base.
Accompanying drawing 10 is unconformity onlap oil-gas reservoir physical simulation experiment illustraton of model in the embodiment of the present invention 3.
Accompanying drawing 11 is unconformity onlap oil-gas reservoir physical simulation experiment illustraton of model in the embodiment of the present invention 4.
Accompanying drawing 12 is unconformity onlap oil-gas reservoir physical simulation experiment illustraton of model in the embodiment of the present invention 5.
Accompanying drawing 13 is unconformity onlap oil-gas reservoir physical simulation experiment illustraton of model in the embodiment of the present invention 6.
Accompanying drawing 14 is unconformity onlap oil-gas reservoir physical simulation experiment illustraton of model in the embodiment of the present invention 7.
In figure, 1, layer box body, 2, unconformity nacelle, 3, top plate, 4, oil filler point, 5, oil hose, 6, pressure gauge, 7, steady
Pressure valve, 8, flow instrument, 9, oil transportation bucket, 10, compression pump, 11, simulating chamber I, 12, simulating chamber II, 13, simulating chamber III, 14, permeability
Baffle plate, 15, cabin unit I, 16, cabin unit II, 17, cabin unit III, 18, slideway, 19, fluid acquisition hole, 20, handle,
21st, nacelle, 22, hatchcover, 23, switching knob, 24, base, 25, support, 26, retractable support lever, 27, soft rubber protection pad, 28,
Control handle, A, 180 micron grain size quartz sands, B, 270 micron grain size quartz sands, C, 325 micron grain size quartz sands are D, 380 micro-
Grain of rice footpath quartz sand, E, 425 micron grain size quartz sands, F, 550 micron grain size quartz sands, G, 830 micron grain size quartz sands.
Embodiment
The experimental provision and experimental method of the present invention are further detailed below in conjunction with accompanying drawing and several embodiments.
Embodiment 1：As shown in figure 1, a kind of unconformity onlap oil-gas reservoir physical simulation experiment device, including oil-gas stratigraphic deposits
Simulator, the oil-gas stratigraphic deposits simulator include ground layer box body 1, the unconformity nacelle 2 positioned at the lower section of ground layer box body 1 and positioned at ground
The top plate 3 of the top of layer box body 1；Described ground layer box body 1 includes three layers of independent simulating chamber, respectively simulating chamber I 11, simulating chamber II
12nd, simulating chamber III 13, the length of simulating chamber I 11 are more than the length of simulating chamber II 12, and the length of simulating chamber II 12 is more than simulating chamber
III 13 length, simulating chamber I 11, simulating chamber II 12, simulating chamber III 12 contact connection with unconformity nacelle 2；Every layer of simulating chamber
Hole is equipped with the side plate and the top plate of unconformity nacelle 2 contacted with unconformity nacelle 2, the every layer mould relative with the side plate
The bottom for intending room side plate is equipped with the oil filler point 4 being connected with infusion fluid systems；Two infiltrations are provided with the unconformity nacelle 2
Unconformity nacelle is divided into three cabin units, respectively cabin unit I 15, cabin by property baffle plate 14, the permeability baffle plate 14
Body unit II 16, cabin unit III 17, and simulating chamber corresponds with cabin unit.Three layers of simulating chamber of stratum cabinet design, can
To fill the quartz sand of 300-1000 micron grain sizes, the scope of sand-conglomerate in representative, it can significantly meet lithology combination difference
Property collocation needs.Unconformity nacelle is divided into three cabin units by the unconformity nacelle by two permeability baffle plates,
To simulate the otherness of unconformity structure on the side.
In the present embodiment, as shown in Fig. 2 the simulating chamber I 11, simulating chamber II 12, simulating chamber III 13 are drawer type
Simulating chamber, slideway 18 is provided between adjacent analog room, when needing sand loading, simulating chamber can freely pull out along slideway.
In embodiment, every layer of simulating chamber is the glass plate with micropore with the side plate that unconformity nacelle contacts, remaining
Each plate is nonporous glass plate, it is ensured that the Gas Accumulation of every layer of simulating chamber is separate, unaffected each other；Side plate
The aperture of upper micropore is 200-300 microns, and quartz sand leakproof of the aperture to particle diameter more than 200 microns is effective, but can not
Prevent oil, the seepage flow of gas and water, therefore oil, gas and water can be by every layer of simulating chamber and the side plates that unconformity nacelle contacts to not whole
Nacelle circulation is closed, can now detect plugging action of the unconformity nacelle to Gas Accumulation.
In the present embodiment, as shown in Fig. 2 to 5, stream is equipped with the top that unconformity nacelle contacts in every layer of simulating chamber
Body gathers hole 19.In experimentation, fluid acquisition hole can be opened, collection fluid is tested and analyzed, by comparing fluid
Geochemical Parameters feature, carry out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example, to collecting oil
The Molecular biomarkers of sample are analyzed, and can study the geologic chromatographic effect during oil migration, so as to deepen stratum
The understanding of reservoir formation mechanism.
In the present embodiment, as shown in Fig. 2 to 5, the side of every layer of simulating chamber is equipped with inner concave shape handle 20, and handle is set
Meter, can be in order to the installation and dismounting of simulating chamber.
In the present embodiment, the top bottom surface of every layer of simulating chamber, unconformity nacelle and top plate is the curved surface knot for rising and falling and bending
Structure, to simulate the actual form of subsurface formations.
In the present embodiment, as shown in fig. 7, the unconformity nacelle includes nacelle 21 and the hatchcover being connected with nacelle 21
22, nacelle 21 is provided with the slot of inserting permeability baffle plate 14, and the top of hatchcover 22 is provided with switching knob 23.It can be filled in nacelle
The quartz sand of different-grain diameter is filled out, to simulate the lithology layer after plane of unconformity weathering；Hatchcover is revolved by being arranged on the switch at the top of it
Button controls, and when opening switching knob, hatchcover can freely be opened around hatchcover rotary shaft, to facilitate the need of the experiment process such as back-up sand
Will.The both sides of nacelle are respectively equipped with 3 bolts, and nacelle is fixed by bolt and the ground layer box body above it.
In the present embodiment, the top plate of the unconformity nacelle is the glass plate with micropore, and the aperture design of micropore is
200-300 microns, fluid can freely penetrate into, and remaining side plate is nonporous glass plate, and fluid can not penetrate into.
To ensure the visualization in experimentation, in the present embodiment, the unconformity nacelle, every layer of simulating chamber and top plate
Formed by the glass of all-transparent, 10MPa operating pressure can be withstood up to.
In the present embodiment, as shown in figure 1, the infusion fluid systems include the oil hose 5 that one end is connected with oil filler point 4
And pressure gauge 6, pressure maintaining valve 7 and flow instrument 8 on oil hose 5 are sequentially arranged at, the other end of oil hose 5 is connected with defeated
Oil drum 9, oil transportation bucket 9 are connected with compression pump 10.The control to pressure, pressure gauge and flow can be achieved in the control of multiple pressure valves
Instrument plays monitoring to the intensity for injecting fluid.During simulated experiment, inlet pressure pair can be investigated by the size of inlet pressure
The control action of Gas Accumulation.
Tested, can not only be observed in oil-gas stratigraphic deposits simulator different parts by the present embodiment experimental provision
Gas accumulation process, can also such as it enter to carrying out geochemical detection into the oil-gas component before and after oil-gas stratigraphic deposits simulator
Row chromatography-mass spectroscopy detects, and passes through the mutation analysis oil-gas migration effect phenomenon to biomarker parameter.
Embodiment 2：As shown in figure 8, a kind of unconformity onlap oil-gas reservoir physical simulation experiment device, including oil-gas stratigraphic deposits
Simulator, the oil-gas stratigraphic deposits simulator include ground layer box body 1, the unconformity nacelle 2 positioned at the lower section of ground layer box body 1 and positioned at ground
The top plate 3 of the top of layer box body 1；Described ground layer box body 1 includes three layers of independent simulating chamber, respectively simulating chamber I 11, simulating chamber II
12nd, simulating chamber III 13, the length of simulating chamber I 11 are more than the length of simulating chamber II 12, and the length of simulating chamber II 12 is more than simulating chamber
III 13 length, simulating chamber I 11, simulating chamber II 12, simulating chamber III 12 contact connection with unconformity nacelle 2；Every layer of simulating chamber
Hole is equipped with the side plate and the top plate of unconformity nacelle 2 contacted with unconformity nacelle 2, the every layer mould relative with the side plate
The bottom for intending room side plate is equipped with the oil filler point 4 being connected with infusion fluid systems；Two infiltrations are provided with the unconformity nacelle 2
Unconformity nacelle is divided into three cabin units, respectively cabin unit I 15, cabin by property baffle plate 14, the permeability baffle plate 14
Body unit II 16, cabin unit III 17, and simulating chamber corresponds with cabin unit；The experimental provision also includes the He of base 24
Support 25, support 25 are fixedly installed in one end of base 24, and unconformity nacelle 2 is installed on support 25 and base 24.Stratum case
Body designs three layers of simulating chamber, can fill the quartz sand of 300-1000 micron grain sizes, the scope of sand-conglomerate in representative, can be compared with
The earth meets the needs of lithology combination otherness collocation.The unconformity nacelle is by two permeability baffle plates by unconformity nacelle
Three cabin units are divided into, to simulate the otherness of unconformity structure on the side.
In the present embodiment, as shown in figure 8, the support 25 includes the scalability support bar 26 being installed on base 24
With the soft rubber protection pad 27 positioned at the top of scalability support bar 26, soft rubber protection pad 27 is connected with unconformity nacelle 2.By setting
The height that the control handle 28 on scalability support bar 26 adjusts scalability support bar 26 is put, simulates oil-gas stratigraphic deposits
The variable pitch of device, to influence of the simulated formation occurrence to oil and gas accumulating efficiency.
In the present embodiment, as shown in Fig. 2 the simulating chamber I 11, simulating chamber II 12, simulating chamber III 13 are drawer type
Simulating chamber, slideway 18 is provided between adjacent analog room, when needing sand loading, simulating chamber can freely pull out along slideway.
In embodiment, every layer of simulating chamber is the glass plate with micropore with the side plate that unconformity nacelle contacts, remaining
Each plate is nonporous glass plate, it is ensured that the Gas Accumulation of every layer of simulating chamber be it is independent, it is unaffected each other；Side plate
The aperture of upper micropore is 200-300 microns, and quartz sand leakproof of the aperture to particle diameter more than 200 microns is effective, but can not
Prevent oil, the seepage flow of gas and water, therefore oil, gas and water can be by every layer of simulating chamber and the side plates that unconformity nacelle contacts to not whole
Nacelle circulation is closed, can now detect plugging action of the unconformity nacelle to Gas Accumulation.
In the present embodiment, as shown in Fig. 2 to 5, stream is equipped with the top that unconformity nacelle contacts in every layer of simulating chamber
Body gathers hole 19.In experimentation, fluid acquisition hole can be opened, collection fluid is tested and analyzed, by comparing fluid
Geochemical Parameters feature, carry out the difference of comparative analysis Different Strata unit Hydrocarbon Accumulation Mechanism.For example, to collecting oil
The Molecular biomarkers of sample are analyzed, and can study the geologic chromatographic effect during oil migration, so as to deepen stratum
The understanding of reservoir formation mechanism.
In the present embodiment, as shown in Fig. 2 to 5, the side of every layer of simulating chamber is equipped with inner concave shape handle 20, and handle is set
Meter, can be in order to the installation and dismounting of simulating chamber.
In the present embodiment, the top bottom surface of every layer of simulating chamber, unconformity nacelle and top plate is the curved surface knot for rising and falling and bending
Structure, to simulate the actual form of subsurface formations.
In the present embodiment, as shown in fig. 7, the unconformity nacelle includes nacelle 21 and the hatchcover being connected with nacelle 21
22, nacelle 21 is provided with the slot of inserting permeability baffle plate 14, and the top of hatchcover 22 is provided with switching knob 23.It can be filled in nacelle
The quartz sand of different-grain diameter is filled out, to simulate the lithology layer after plane of unconformity weathering；Hatchcover is revolved by being arranged on the switch at the top of it
Button controls, and when opening switching knob, hatchcover can freely be opened around hatchcover rotary shaft, to facilitate the need of the experiment process such as back-up sand
Will.The both sides of nacelle are respectively equipped with 3 bolts, and nacelle is fixed by bolt and the ground layer box body above it.
In the present embodiment, the top plate of the unconformity nacelle is the glass plate with micropore, and the aperture design of micropore is
200-300 microns, fluid can freely penetrate into, and remaining side plate is nonporous glass plate, and fluid can not penetrate into.
To ensure the visualization in experimentation, in the present embodiment, the unconformity nacelle, every layer of simulating chamber and top plate
Formed by the glass of all-transparent, 10MPa operating pressure can be withstood up to.
In the present embodiment, as shown in figure 1, the infusion fluid systems include the oil hose 5 that one end is connected with oil filler point 4
And pressure gauge 6, pressure maintaining valve 7 and flow instrument 8 on oil hose 5 are sequentially arranged at, the other end of oil hose 5 is connected with defeated
Oil drum 9, oil transportation bucket 9 are connected with compression pump 10.The control to pressure, pressure gauge and flow can be achieved in the control of multiple pressure valves
Instrument plays monitoring to the intensity for injecting fluid.During simulated experiment, inlet pressure pair can be investigated by the size of inlet pressure
The control action of Gas Accumulation.
Tested by the present embodiment, the Gas Accumulation in oil-gas stratigraphic deposits simulator different parts can not only be observed
Process, it can also such as carry out chromatogram-matter to carrying out geochemical detection into the oil-gas component before and after oil-gas stratigraphic deposits simulator
Spectrum detection, passes through the mutation analysis oil-gas migration effect phenomenon to biomarker parameter.
Embodiment 3：To the reality of the present invention so that simulated formation inclination angle is 30 degree of unconformity onlap oil-gas reservoir as an example
Proved recipe method illustrates.Experiment is using the experimental provision described in embodiment 2.During experiment, according to unconformity as shown in Figure 10
Onlap oil-gas reservoir physical simulation experiment model configures to stratum oil reservoir simulator, and different compartments fill in Figure 10 institutes representation model
Varigrained quartz sand is filled out, to represent deposition and the cementing difference for waiting geologic process.In experimentation, filled out in simulating chamber I
Fill 380 micron grain size quartz sands and do middle sandstone, 550 micron grain size quartz sands of filling do gritstone, simulating chamber III in simulating chamber II
830 micron grain size quartz sands of interior filling are formed from bottom to top as the positive deposition sequence of conglomerate-gritstone-middle sandstone as conglomerate
Row；180 micron grain size quartz sands are filled in three cabin units of unconformity nacelle and represent mud stone in weathered clay layer.It is real
Test the kerosene that red is dyed in middle use and replace crude oil.
A kind of unconformity onlap oil-gas reservoir physical simulation experiment method, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data.
(2) unconformity nacelle is unloaded from the bottom of ground layer box body.
(3) simulating chamber I, simulating chamber II and simulating chamber III are pulled out to come respectively from the slideway in ground layer box body, simulation
Room I, simulating chamber II and simulating chamber III fill 380 micron grain size quartz sands, 550 micron grain size quartz sands, 830 micron grain sizes respectively
Quartz sand, after the quartz sand for having filled requirement of experiment particle diameter, it is compacted, is then closed, shift origin-location onto.
(4) by the hatchcover of switching knob opening unconformity nacelle, after the quartz sand for filling 180 micron grain sizes, pressed
It is real, the hatchcover of unconformity nacelle is then shut off, buckles well switching knob.
(5) ground layer box body and unconformity nacelle and top plate are connected；The height of support is adjusted, it is 30 to make stratigraphic dip
Degree, the oil-gas stratigraphic deposits simulator assembled is positioned on support and base, with bolt by oil-gas stratigraphic deposits simulator and bottom
Seat is fixed.
(6) infusion fluid systems have been configured according to Fig. 8, the oil hose of infusion fluid systems has been connected with oil filler point.
(7) it is 5MPa to adjust injection pressure according to requirement of experiment, sets charge velocity as 5-10ml/min, starts from oiling
Hole injection band dyes the kerosene of red.
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, from the fluid acquisition of three layers of simulating chamber
Mouth collection oil sample.
(9) after reaching requirement of experiment, physical simulation experiment is stopped.
(10) geochemical detection is carried out to the product collected.
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
It is 180 micro- because three cabin units of stratigraphic unconformity nacelle are all filled with particle diameter in the experiment of the present embodiment
Grain of rice footpath quartz sand, is respectively provided with good seal-off effect, finally all forms good oil accumulation phenomenon.In stratum simulating chamber III
Quartz sand particle size it is thick, fluid permeability is high, and oily migration has relatively high speed, stratum simulating chamber II and stratum simulating chamber
I oily migration rate is sequentially reduced.
Embodiment 4：To the reality of the present invention so that simulated formation inclination angle is 30 degree of unconformity onlap oil-gas reservoir as an example
Proved recipe method illustrates.Experiment is using the experimental provision described in embodiment 2.During experiment, according to unconformity as shown in figure 11
Onlap oil-gas reservoir physical simulation experiment model configures to stratum oil reservoir simulator, and different compartments fill in Figure 11 institutes representation model
Varigrained quartz sand is filled out, to represent deposition and the cementing difference for waiting geologic process.In experimentation, filled out in simulating chamber I
Fill 830 micron grain size quartz sands and do conglomerate, 550 micron grain size quartz sands of filling do gritstone in simulating chamber II, in simulating chamber III
Sandstone during 380 micron grain size quartz sands are used as is filled, is formed from bottom to top as the reverse deposition sequence of middle sandstone-gritstone-conglomerate
Row；180 micron grain size quartz sands are filled in three cabin units of unconformity nacelle and represent mud stone in weathered clay layer.It is real
Test the kerosene that red is dyed in middle use and replace crude oil.
A kind of unconformity onlap oil-gas reservoir physical simulation experiment method, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data.
(2) unconformity nacelle is unloaded from the bottom of ground layer box body.
(3) simulating chamber I, simulating chamber II and simulating chamber III are pulled out to come respectively from the slideway in ground layer box body, simulation
Room I, simulating chamber II and simulating chamber III fill 830 micron grain size quartz sands, 550 micron grain size quartz sands, 380 micron grain sizes respectively
Quartz sand, after the quartz sand for having filled requirement of experiment particle diameter, it is compacted, is then closed, shift origin-location onto.
(4) by the hatchcover of switching knob opening unconformity nacelle, after the quartz sand for filling 180 micron grain sizes, pressed
It is real, the hatchcover of unconformity nacelle is then shut off, buckles well switching knob.
(5) ground layer box body and unconformity nacelle and top plate are connected；The height of support is adjusted, it is 30 to make stratigraphic dip
Degree, the oil-gas stratigraphic deposits simulator assembled is positioned on support and base, with bolt by oil-gas stratigraphic deposits simulator and bottom
Seat is fixed.
(6) infusion fluid systems have been configured according to Fig. 8, the oil hose of infusion fluid systems has been connected with oil filler point.
(7) it is 5MPa to adjust injection pressure according to requirement of experiment, sets charge velocity as 5-10ml/min, starts from oiling
Hole injection band dyes the kerosene of red.
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, from the fluid acquisition of three layers of simulating chamber
Mouth collection oil sample.
(9) after reaching requirement of experiment, physical simulation experiment is stopped.
(10) geochemical detection is carried out to the product collected.
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
In the experiment of the present embodiment, due to the lithologic allocation of stratum simulating chamber I, stratum simulating chamber II and stratum simulating chamber III
Change, therefore form different oil-gas migration, clustering phenomena.Compared with Example 3, in the present embodiment experiment, ground
The permeability of layer simulating chamber I is maximum, and the permeability of stratum simulating chamber III is minimum, thus oil with comparatively faster speed to stratum
Simulating chamber I is migrated, and stratum simulating chamber II and III oily migration rate of stratum simulating chamber are sequentially reduced.It is similar to Example 3, unconformity
Three cabins of nacelle are respectively provided with good seal-off effect, and final three simulating chambers all form good oil accumulation phenomenon.
Embodiment 5：The experimental method of the present invention is carried out so that simulated formation inclination angle is 30 degree of unconformity as an example
Explanation.Experiment is using the experimental provision described in embodiment 2.During experiment, according to unconformity onlap oil-gas reservoir as shown in figure 12
Physical simulation experiment model configures to stratum oil reservoir simulator, different compartment filling different grain sizes in Figure 12 institutes representation model
Quartz sand, with represent deposition and it is cementing wait geologic process difference.In experimentation, 380 microns of grains of filling in simulating chamber I
Footpath quartz sand does middle sandstone, and 550 micron grain size quartz sands of filling do gritstone in simulating chamber II, and filling 830 is micro- in simulating chamber III
Grain of rice footpath quartz sand is formed from bottom to top as the positive sedimentary sequence of conglomerate-gritstone-middle sandstone as conglomerate；Unconformity cabin
325 micron grain size quartz sands are filled in three cabin units of body and represent sandstone in unconformity Weathering And Leaching layer.In experiment
Crude oil is replaced using the kerosene for dying red.
A kind of unconformity onlap oil-gas reservoir physical simulation experiment method, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data.
(2) unconformity nacelle is unloaded from the bottom of ground layer box body.
(3) simulating chamber I, simulating chamber II and simulating chamber III are pulled out to come respectively from the slideway in ground layer box body, simulation
Room I, simulating chamber II and simulating chamber III fill 380 micron grain size quartz sands, 550 micron grain size quartz sands, 830 micron grain sizes respectively
Quartz sand, after the quartz sand for having filled requirement of experiment particle diameter, it is compacted, is then closed, shift origin-location onto.
(4) by the hatchcover of switching knob opening unconformity nacelle, after the quartz sand for filling 325 micron grain sizes, pressed
It is real, the hatchcover of unconformity nacelle is then shut off, buckles well switching knob.
(5) ground layer box body and unconformity nacelle and top plate are connected；The height of support is adjusted, it is 30 to make stratigraphic dip
Degree, the oil-gas stratigraphic deposits simulator assembled is positioned on support and base, with bolt by oil-gas stratigraphic deposits simulator and bottom
Seat is fixed.
(6) infusion fluid systems have been configured according to Fig. 8, the oil hose of infusion fluid systems has been connected with oil filler point.
(7) it is 5MPa to adjust injection pressure according to requirement of experiment, sets charge velocity as 5-10ml/min, starts from oiling
Hole injection band dyes the kerosene of red.
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, from the fluid acquisition of three layers of simulating chamber
Mouth collection oil sample.
(9) after reaching requirement of experiment, physical simulation experiment is stopped.
(10) geochemical detection is carried out to the product collected.
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
Compared with Example 3 compared with the experiment of the present embodiment, because three cabin units of stratigraphic unconformity nacelle are all filled
It is 325 micron grain size quartz sands to be filled with particle diameter, and because particle diameter is thicker, seal-off effect is bad, therefore is observed that the slow seepage of oil
Into unconformity nacelle, the phenomenon then migrated upwards along nacelle unconformity nacelle.Quartz sand particle size is thick in stratum simulating chamber III,
Fluid permeability is high, and oily migration has relatively high speed, and stratum simulating chamber II and I oily migration rate of stratum simulating chamber are successively
Reduce.Because the particle diameter of the three simulating chamber quartz sand in stratum is all thicker than unconformity nacelle quartz sand particle size, oil is in stratum simulating chamber
Migration rate it is high compared with unconformity nacelle, therefore can also form certain oily clustering phenomena.
Embodiment 6：The experimental method of the present invention is carried out so that simulated formation inclination angle is 30 degree of unconformity as an example
Explanation.Experiment is using the experimental provision described in embodiment 2.During experiment, according to unconformity onlap oil-gas reservoir as shown in fig. 13 that
Physical simulation experiment model configures to stratum oil reservoir simulator, different compartment filling different grain sizes in Figure 13 institutes representation model
Quartz sand, with represent deposition and it is cementing wait geologic process difference.In experimentation, 380 microns of grains of filling in simulating chamber I
Footpath quartz sand does middle sandstone, and 550 micron grain size quartz sands of filling do gritstone in simulating chamber II, and filling 830 is micro- in simulating chamber III
Grain of rice footpath quartz sand is formed from bottom to top as the positive sedimentary sequence of conglomerate-gritstone-middle sandstone as conglomerate；Cabin unit I
180 micron grain size quartz sands are filled, cabin unit II fills 270 micron grain size quartz sands, and cabin unit III fills 425 microns of grains
Footpath quartz sand, represent the different lithology that the difference of the lateral weathering eluviation of unconformity is formed.Used in experiment and dye red
Kerosene replaces crude oil.
A kind of unconformity onlap oil-gas reservoir physical simulation experiment method, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data.
(2) unconformity nacelle is unloaded from the bottom of ground layer box body.
(3) simulating chamber I, simulating chamber II and simulating chamber III are pulled out to come respectively from the slideway in ground layer box body, simulation
Room I, simulating chamber II and simulating chamber III fill 380 micron grain size quartz sands, 550 micron grain size quartz sands, 830 micron grain sizes respectively
Quartz sand, after the quartz sand for having filled requirement of experiment particle diameter, it is compacted, is then closed, shift origin-location onto.
(4) hatchcover of unconformity nacelle is opened by switching knob, cabin unit I fills 180 micron grain size quartz sands, cabin
Body unit II fills 270 micron grain size quartz sands, and cabin unit III fills 425 micron grain size quartz sands, and different cabin units are used
Permeability baffle plate blocks, and after filling quartz sand, is compacted, is then shut off the hatchcover of unconformity nacelle, buckles well switching knob.
(5) ground layer box body and unconformity nacelle and top plate are connected；The height of support is adjusted, it is 30 to make stratigraphic dip
Degree, the oil-gas stratigraphic deposits simulator assembled is positioned on support and base, with bolt by oil-gas stratigraphic deposits simulator and bottom
Seat is fixed.
(6) infusion fluid systems have been configured according to Fig. 8, the oil hose of infusion fluid systems has been connected with oil filler point.
(7) it is 5MPa to adjust injection pressure according to requirement of experiment, sets charge velocity as 5-10ml/min, starts from oiling
Hole injection band dyes the kerosene of red.
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, from the fluid acquisition of three layers of simulating chamber
Mouth collection oil sample.
(9) after reaching requirement of experiment, physical simulation experiment is stopped.
(10) geochemical detection is carried out to the product collected.
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
Compared with Example 3 compared with the experiment of the present embodiment, because three cabin units of stratigraphic unconformity nacelle are distinguished
The quartz sand that particle diameter is 180,270 and 425 micron grain sizes is filled with, because quartz sand particle size is different, shows different closure
Property.The quartz sand particle size of cabin unit III is most thick, and seal-off effect is worst, and oil is in stratum simulating chamber III with comparatively faster speed to not
The seepage of cabin unit III is integrated, stratum simulating chamber II and the oil of stratum simulating chamber I weaken successively to the speed of unconformity cabin seepage.
Meanwhile the speed that oil is migrated upwards in cabin unit III is most fast maximum, the speed of oil migration in cabin unit II and cabin unit I
Rate weakens successively.In three stratum simulating chambers, oily migration rate highest, stratum simulating chamber II and ground in stratum simulating chamber III
Layer I oily migration rate of simulating chamber is sequentially reduced.
Embodiment 7：The experimental method of the present invention is carried out so that simulated formation inclination angle is 10 degree of unconformity as an example
Explanation.Experiment is using the experimental provision described in embodiment 2.During experiment, according to unconformity onlap oil-gas reservoir as shown in figure 14
Physical simulation experiment model configures to stratum oil reservoir simulator, different compartment filling different grain sizes in Figure 14 institutes representation model
Quartz sand, with represent deposition and it is cementing wait geologic process difference.In experimentation, 380 microns of grains of filling in simulating chamber I
Footpath quartz sand does middle sandstone, and 550 micron grain size quartz sands of filling do gritstone in simulating chamber II, and filling 830 is micro- in simulating chamber III
Grain of rice footpath quartz sand is formed from bottom to top as the positive sedimentary sequence of conglomerate-gritstone-middle sandstone as conglomerate；Unconformity cabin
180 micron grain size quartz sands are filled in three cabin units of body and represent mud stone in unconformity weathered clay layer.In experiment
Crude oil is replaced using the kerosene for dying red.
A kind of unconformity onlap oil-gas reservoir physical simulation experiment method, its specific experiment step are as follows：
(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, collection experiment
Preceding experimental data.
(2) unconformity nacelle is unloaded from the bottom of ground layer box body.
(3) simulating chamber I, simulating chamber II and simulating chamber III are pulled out to come respectively from the slideway in ground layer box body, simulation
Room I, simulating chamber II and simulating chamber III fill 380 micron grain size quartz sands, 550 micron grain size quartz sands, 830 micron grain sizes respectively
Quartz sand, after the quartz sand for having filled requirement of experiment particle diameter, it is compacted, is then closed, shift origin-location onto.
(4) by the hatchcover of switching knob opening unconformity nacelle, after the quartz sand for filling 180 micron grain sizes, pressed
It is real, the hatchcover of unconformity nacelle is then shut off, buckles well switching knob.
(5) ground layer box body and unconformity nacelle and top plate are connected；The height of support is adjusted, it is 10 to make stratigraphic dip
Degree, the oil-gas stratigraphic deposits simulator assembled is positioned on support and base, with bolt by oil-gas stratigraphic deposits simulator and bottom
Seat is fixed.
(6) infusion fluid systems have been configured according to Fig. 8, the oil hose of infusion fluid systems has been connected with oil filler point.
(7) it is 5MPa to adjust injection pressure according to requirement of experiment, sets charge velocity as 5-10ml/min, starts from oiling
Hole injection band dyes the kerosene of red.
(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, from the fluid acquisition of three layers of simulating chamber
Mouth collection oil sample.
(9) after reaching requirement of experiment, physical simulation experiment is stopped.
(10) geochemical detection is carried out to the product collected.
(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation
Mechanism.
Compared with Example 3 compared with, in the experiment of the present embodiment, because stratigraphic dip and unconformity inclination angle slow down, stratum mould
Intending the migration rate of indoor oil reduces.Stratigraphic unconformity nacelle has good shut-off capacity, and inclination angle slows down, and further enhancing
The shut-off capacity of unconformity nacelle.
Above example shows, the lithology on unconformity onlap stratum is an important factor in order of oil aggregation, lithology granularity
Slightly, physical property is good, is relatively easy to form oily aggregation；Unconformable lithology is very crucial to forming stratigraphic oil pool, and unconformity is by weathering shadow
When sound forms thinner lithology, seal-off effect is good, and the aggregation to oil is favourable.Unconformity is influenceed by leaching, when forming thicker lithology,
Seal-off effect is poor, easily causes the Seepage of oil.This shows that unconformity body onlap stratum acts not only as plugged zone, also may be used
To form oil gas lateral migration passage.
Embodiment above, is only certain the single condition for changing governing factor, analogue means of the present invention can still simulate
Overlap unconformity reservoir formation process and aggregation of multiple when thering are several factors to change simultaneously.
As the extension of above-described embodiment, according to the different shape on stratigraphic unconformity onlap stratum, thus it is possible to vary support
Height completes stratum not so as to change stratigraphic unconformity onlap stratigraphic dip, and the inclination angle of change oil-gas stratigraphic deposits simulator
The change of onlap strata arrangement form is integrated, realizes the gas accumulation process on simulated formation unconformity onlap stratum.
Above-described embodiment is used for explaining the present invention, rather than limits the invention, in the spirit and right of the present invention
It is required that protection domain in, to any modifications and changes for making of the present invention, both fall within protection scope of the present invention.
Claims (10)
- A kind of 1. unconformity onlap oil-gas reservoir physical simulation experiment device, it is characterised in that：The experimental provision includes formation oil Gas reservoir simulator, the oil-gas stratigraphic deposits simulator include ground layer box body, the unconformity nacelle below ground layer box body and are located at Top plate above ground layer box body；Described ground layer box body includes the simulating chamber of multilayer independence, and the length of lower floor's simulating chamber is less than upper strata The length of simulating chamber, every layer of simulating chamber contact connection with unconformity nacelle；The side that every layer of simulating chamber contacts with unconformity nacelle Be equipped with hole on plate and the top plate of unconformity nacelle, the bottom of the every layer simulating chamber side plate relative with the side plate be equipped with The oil filler point of infusion fluid systems connection；Multiple permeability baffle plates are provided with the unconformity nacelle, the permeability baffle plate will Unconformity nacelle be divided into simulating chamber quantity identical cabin unit, and simulating chamber and cabin unit correspond；It is described not Integrating nacelle includes nacelle and the hatchcover being connected with nacelle.
- 2. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 1, it is characterised in that：The stratum Casing includes three layers of independent drawer type simulating chamber, and slideway is provided between adjacent analog room；The unconformity nacelle is provided with two Permeability baffle plate, unconformity nacelle is divided into three cabin units.
- 3. the unconformity onlap oil-gas reservoir physical simulation experiment device according to any one of claim 1 or 2, its feature exist In：Every layer of simulating chamber is the glass plate with micropore with the side plate that unconformity nacelle contacts, and remaining each plate is nonporous glass Plate.
- 4. the unconformity onlap oil-gas reservoir physical simulation experiment device according to any one of claim 1 or 2, its feature exist In：In every layer of simulating chamber fluid acquisition hole is equipped with the top that unconformity nacelle contacts.
- 5. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 2, it is characterised in that：Every layer of simulation The side of room is equipped with inner concave shape handle.
- 6. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 1, it is characterised in that：Every layer of simulation The top bottom surface of room, unconformity nacelle and top plate is the curved-surface structure for rising and falling and bending.
- 7. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 1, it is characterised in that：Set in nacelle There is the slot of inserting permeability baffle plate, the top of hatchcover is provided with switching knob.
- 8. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 1, it is characterised in that：The experiment Device also includes base and support, and support is fixedly installed in one end of base, and unconformity nacelle is installed on support and base.
- 9. unconformity onlap oil-gas reservoir physical simulation experiment device according to claim 8, it is characterised in that：The support Including the scalability support bar being installed on base and the soft rubber protection pad positioned at scalability support bar top, soft rubber shield Pad is connected with unconformity nacelle.
- 10. a kind of unconformity onlap oil-gas reservoir physical simulation experiment method, using analogue means as claimed in claim 1, its It is characterised by：Its specific experiment step is as follows：(1) prepare simulation material, test simulator, the oil composition before experiment is tested and analyzed, before collection experiment Experimental data；(2) unconformity nacelle is unloaded from the bottom of ground layer box body；(3) every layer of simulating chamber is removed respectively, progress lithologic allocation, after the quartz sand for having filled requirement of experiment particle diameter, pressed It is real, then close, put back to origin-location；(4) unconformity nacelle is opened, after the quartz sand for having filled requirement of experiment particle diameter, is compacted, is then shut off unconformity cabin Body；(5) ground layer box body and unconformity nacelle and top plate are connected；(6) infusion fluid systems have been configured, the oil hose of infusion fluid systems has been connected with oil filler point；(7) the injection pressure of requirement of experiment is regulated according to requirement of experiment, setting charge velocity starts to inject crude oil from oil filler point；(8) crude oil is observed in experimentation and transports poly- phenomenon, and real-time camera or video recording, oil sample is gathered from every layer of simulating chamber；(9) after reaching requirement of experiment, physical simulation experiment is stopped；(10) geochemical detection is carried out to the product collected；(11) Binding experiment is observed, and the difference of data, analyzes experimentation before and after comparative analysis experiment, summarizes Gas Accumulation machine Reason.
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| CN104931676A (en) * | 2015-07-09 | 2015-09-23 | 中国石油大学(华东) | Lithological association structure-controlled oil and gas migration and accumulation physical simulation system and experimental method |
| CN104952353A (en) * | 2015-07-23 | 2015-09-30 | 中国石油大学(华东) | Multi-trap oil gas differential accumulation experimental simulation device and method |
| CN205230475U (en) * | 2015-11-19 | 2016-05-11 | 中国石油大学(华东) | Physical simulation experimental apparatus is hidden to unconformity overlap oil gas |
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