CN103541730B - The fluid expulsion saturation device of large scale physical model and displacement test system thereof - Google Patents
The fluid expulsion saturation device of large scale physical model and displacement test system thereof Download PDFInfo
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Abstract
The invention provides a kind of fluid expulsion saturation device and displacement test system thereof of large scale physical model, this fluid expulsion saturation device comprises housing (1) and the rock core model (2) by housing (1) sealed envelope, the both sides of rock core model (2) are respectively arranged with can be to row's driving device (3) of injection fluid in rock core model (2), and row's driving device (3) contains the multiple inlets (31) that contact with the surface of rock core model (2). The displacement test system of the large scale physical model that contains fluid expulsion saturation device has adopted fluid front evenly to advance with stable row's shape compared with conventional fluid saturation process, swept volume improves, saturation effect obviously promotes, and has improved the simulation degree that large scale physical model distributes to fluid under reservoir condition.
Description
Technical field
The present invention relates to oil gas field experimental technique field, particularly the saturated dress of a kind of fluid expulsion of large scale physical modelPut, or a kind of displacement test system of large scale physical model.
Background technology
The displacement test of large scale physical model is the effective means of Reality simulation oil reservoir development feature, and fluid whereinSaturation history is the primary link of testing, and realizing the effective simulating oil deposit initial fluid of physical model saturation state is to driveFor the basis of experiment.
At present, the saturated with fluid method of one-dimensional physical model has belonged to mature technology, has clear and definite in core analysis standardStep, and two-dimensional/three-dimensional physical model does not have standard to follow. Reason is that the sectional area of one-dimensional model is less, fullUnder mobile at a slow speed condition, be similar to piston-like with fluid, fingering phenomenon and gravity interference effect can be ignored. At rock coreVacuumize and saturation water operation after, water almost occupies whole interstitial space, it has been generally acknowledged that saturation water volume is modelPore volume. Large scale two-dimensional/three-dimensional physical model faces comparatively serious plane fluid and refers in saturated with fluid processEnter and the longitudinal problem such as fluid skewness. Existing method is first model to be vacuumized, then at the not coordination of modelPut and progressively inject fluid, reduce territory, bypassed area by the displacement amount of macrovoid volume multiple. In requirement of experiment simple andUnder the condition that the model space allows, can carry out angle adjustment to model, utilize Action of Gravity Field further to improve saturated effectReally. Nonetheless, the degree of saturation of large scale two dimension, three-dimensional physical model is also difficult to reach pore volume conventionally70%, there is certain gap with the saturated with fluid state of true oil reservoir. For most of physical simulation experiments, all wantAsk saturated fluid under high-temperature and high-pressure conditions, petrophysical model must be fixed in high temperature and high pressure containers still/cabin, to modelThe mode tilting cannot be used.
There are two outstanding problems in existing method: 1. full in the time of the operated in saturation of large scale two dimension, three-dimensional physical modelDuring with water, point-like is injected water is pushed ahead with fan-shaped, in the time that rock core model homogenieity is slightly poor, easily produces fingering nowResemble, even if repeatedly adjust decanting point position, can not make water feed through to whole model. 2. when saturated oils, oil conventionally canAlong the duct seepage flow having been occupied by water, initial oil saturation is lower, and fluid that cannot Reality simulation oil reservoir is fullAnd state.
Summary of the invention
In order to solve the low technical problem of existing large scale physical model saturation degree, the invention provides a kind of large scaleThe fluid expulsion saturation device of physical model and displacement test system thereof. The fluid expulsion of this large scale physical model is saturatedDevice and displacement test system thereof can effectively improve the degree of saturation of fluid in large scale physical model, have improved large chiThe simulation degree that very little physical model distributes to fluid under reservoir condition.
The present invention is that the technical scheme that solves its technical problem employing is: a kind of fluid expulsion of large scale physical model is fullAnd device, the rock core model that comprises housing and wrapped up by housing seal, the both sides of rock core model are respectively arranged with can be toIn rock core model, inject row's driving device of fluid, row's driving device contains the multiple injections that contact with the surface of rock core modelMouthful.
The main body of row's driving device contains the cavity of sealing, and multiple inlets are arranged on main body and the rock core mould of row's driving deviceOn the sidewall that type contacts, inlet can be communicated with cavity, and one end sealing of piston is plugged in inlet, on sidewallBe provided with the inflow entrance being communicated with cavity.
The other end of piston is fixedly connected with stressed plate, and stressed plate can be divided into cavity the first half cavitys and second in midairChamber, the first half cavitys can be communicated with inlet.
In the first half cavitys, be provided with the first elastic membrane, the sidewall of the main body of row's driving device is provided with the first elastic membrane and is communicated withThe first film port, while injecting fluid in from the first film port to the first elastic membrane, stressed plate and piston can move,The first half cavitys can be communicated with inlet.
In the second half cavitys, be provided with the second elastic membrane, the sidewall of the main body of row's driving device is provided with the second elastic membrane and is communicated withThe second film port, while injecting fluid in from the second film port to the second elastic membrane, stressed plate and piston can move.
Stressed plate forms by multiple stressed, hinged between adjacent two stressed, the other end of piston and stressedBe fixedly connected with.
Be arranged on the height of inlet of row's driving device of rock core model one side lower than being arranged on rock core model opposite sideThe height of the inlet of row's driving device.
Row's driving device is multiple packoff nipples, and an inlet, sealing pipe nipple are all contained in one end of each packoff nippleOne end be connected with rock core model, the other end of packoff nipple is communicated with the outside of housing.
A displacement test system for large scale physical model, the fluid expulsion that contains above-mentioned large scale physical model is fullAnd device, the inlet of row's driving device of rock core model one side is connected with fluid injection device by pipeline, rock core modelThe inlet of row's driving device of opposite side is connected with fluid collection device by pipeline.
The displacement test system of this large scale physical model also contains autoclave, the fluid expulsion of this large scale physical modelSaturation device is arranged in autoclave.
The invention has the beneficial effects as follows:
1. conventional fluid saturation process is generally point-like injection, cannot guarantee the fluid of injection at model with row's shape forwardAdvance, the sweep efficiency of blowhole is low, and degree of saturation is poor. And while adopting this method saturated fluid, fluid front withStable row's shape evenly advances, and swept volume improves, and saturation effect obviously promotes.
2., although row's driving device and rock core in the present invention have larger contact-making surface, good sealing, makes to satisfyWith after fluid seepage flow be not subject to the impact of contact-making surface, ensured the true reflection of displacement rule.
3. conventional saturation process saturation efficiency is low, and poor controllability. And this method controllability is strong, be applicable to dissimilarThe rock core of (height oozes, hypotonic, homogeneous, heterogeneous body). When degree of saturation significantly improves, improve large scaleThe simulation degree that physical model distributes to fluid under reservoir condition.
Brief description of the drawings
Fluid expulsion saturation device below in conjunction with accompanying drawing to large scale physical model of the present invention and displacement thereof are realCheck system is described in further detail.
Fig. 1 is the schematic perspective view of the fluid expulsion saturation device of the large scale physical model described in embodiment 1.
Fig. 2 is first view of arranging driving device in embodiment 1.
Fig. 3 is second view of arranging driving device in embodiment 1.
Fig. 4 is the structural representation of stressed plate and stressed in embodiment 1.
Fig. 5 is the working state schematic representation of the displacement test system of the large scale physical model described in embodiment 1.
Fig. 6 is the schematic perspective view of the fluid expulsion saturation device of the large scale physical model in embodiment 2.
Fig. 7 is the cutaway view of packoff nipple in embodiment 2.
Fig. 8 is the working state schematic representation of the displacement test system of the large scale physical model described in embodiment 2.
Fig. 9 is the structural representation of the valve described in embodiment 2.
Figure 10 is the schematic diagram that fluid circulates in rock core model.
Figure 11 is the experimental result comparison diagram of prior art and the method for the invention.
Wherein 1. housings, 2. rock core model, 3. row's driving device, 31. inlets, the main body of 32. row's driving devices,33. cavitys, 331. the first half cavitys, 332. first elastic membranes, 333. first film ports, 334. second in midairChamber, 335. second elastic membranes, 336. second film ports, 34. sidewalls, 35. pistons, 36. stressed plates, 361.Stressed, 37. packoff nipples, 38. inflow entrances, 4. pipeline, 51. first injection pumps, 52. second injection pumps,53. the 3rd injection pumps, 6. autoclave, 71. first valves, 72. second valves, 73. the 3rd valves, 74. the 4th valves,75. the 5th valves, 76. the 6th valves, 77. the 7th valves, 78. the 8th valves, 79. the 9th valves, 710. the tenth valves,8. collecting tank, 9. intermediate receptacle, 91. valves, 911. single valve outlets, 912. valve rods, 913. single valves, 914.Passage, 915. entrances.
Detailed description of the invention
Embodiment 1
Fluid expulsion saturation device below in conjunction with accompanying drawing to large scale physical model of the present invention and displacement thereof are realCheck system is elaborated. A fluid expulsion saturation device for large scale physical model, comprises housing 1 and by shellThe rock core model 2 of body 1 sealed envelope, the both sides of rock core model 2 are respectively arranged with can be to the interior injection of rock core model 2Row's driving device 3 of fluid, row's driving device 3 contains the multiple inlets 31 that contact with the surface of rock core model 2, asShown in Fig. 1, as arrow A express liquid in Fig. 1 flows into, arrow B express liquid flows out.
Specifically in the present embodiment, the main body 32 of row's driving device contains the cavity 33 of sealing, multiple inlets 31On the sidewall 34 that the main body 32 of the row's of being arranged on driving device contacts with rock core model 2, inlet 31 can with cavity33 are communicated with, and one end sealing of piston 35 is plugged in inlet 31, and sidewall 34 is provided with the inflow being communicated with cavity 33Mouth 38, as shown in Figure 2 and Figure 3. Large scale physical model is rock core model 2, in the time of work, and rock core model 2A side that is provided with piston 35 with row's driving device 3 contacts, and piston 35 can be along close rock core model 2 with away from rockThe direction of heart model 2 moves, and when needs are during to rock core model 2 interior saturated liquid, first piston 35 is to away from rock coreThe direction of model 2 moves, and as shown in Figure 3, in the time that inlet 31 is communicated with cavity 33, liquid can enter piston 3Inlet 31 after leaving, then piston 35 is again to moving near the direction of rock core model 2, and piston 35 can be byLiquid in inlet 31 is pressed in rock core model 2, as shown in Figure 2, thus saturated core model 2. Row drivesThe approximate box like structure of main body 32 of device, the inlet 31 of some is arranged at top, is the space that piston 35 moves.Between the main body 32 of row's driving device and gland, end face, be closely connected by bolt. The fluid of this large scale physical modelRow drives row's driving device in saturation device 3, and to be integral type be mainly applicable to homogeneous rock core model.
The other end of piston 35 is fixedly connected with stressed plate 36, and stressed plate 36 can be divided into first in midair by cavity 33Chamber 331 and the second half cavity 334, the first half cavitys 331 can be communicated with inlet 31.
In the first half cavitys 331, be provided with the first elastic membrane 332, the sidewall 34 of the main body 32 of row's driving device be provided withThe first film port 333 that the first elastic membrane 332 is communicated with, when from the first film port 333 to the interior note of the first elastic membrane 332While entering fluid, stressed plate 36 and piston 35 can move, and the first half cavitys 331 can be communicated with inlet 31.In the second half cavitys 334, be provided with the second elastic membrane 335, the sidewall 34 of the main body 32 of row's driving device is provided with and secondThe second film port 336 that elastic membrane 335 is communicated with, when flowing to the interior injection of the second elastic membrane 335 from the second film port 336When body, stressed plate 36 and piston 35 can move. The first elastic membrane 332 and the second elastic membrane 335 are two elasticityCapsule, mainly works to promote stressed plate 36 and moves, in the time being full of fluid expansion in the first elastic membrane 332, stressedPlate 36 moves to the second half cavity 334 directions the fluid of simultaneously extruding in the second elastic membrane 335; In like manner, the second bulletWhen property film 335 is full of fluid expansion, stressed plate 36 moves and extrudes the first bullet simultaneously to the direction of the first half cavitys 331Fluid in property film 332. On row's driving device, be distributed with inflow entrance 38, the first film port 333, the second film port336 and bolt mouth. The mouth that enters or go out that wherein inflow entrance 38 is saturated fluid, after piston 35 moves down in Fig. 2,Be filled with the first elastic membrane 332 peripheral spaces by the fluid of this inflow entrance 38 and finally can enter into large scale rock core modelIn 2. The first film port 333 and the second film port 336 are respectively the first elastic membrane 332 and the second elastic membrane 335 is filled outFill the mouth that enters or go out of fluid, enter the first elastic membrane 332 or the second elastic membrane 335 by the fluid of these two mouthsIn, and then promote stressed plate 36 and piston 35 and move.
Stressed plate 36 forms by multiple stressed 361, hinged between adjacent two stressed 361, piston 35The other end be fixedly connected with stressed 361, as shown in Figure 4. The center of each stressed 361 is provided with oneHave the circular trough of interior screw thread, the other end of this circular trough and piston 35 matches, and the other end of piston 35 passes through screw threadConnect with circular trough and fix. The hinged piston 35 that can allow has a little side-play amount, makes all pistons 35 and is subject toPower plate 36 coordinative roles, have ensured up rightness when single piston 35 moves, thereby are convenient to improve the sealing of piston.
Inlet 31 in the main body 32 of piston 35 and row's driving device is sealed by O type circle, when stressed plate 36 pulls workPlug 35 in Fig. 2 be moved to ad-hoc location time, between the main body 32 of row's driving device and rock core model 2, form and lead toRoad, saturated fluid injects rock core model 2; After saturated end, stressed plate 36 promotes upper in Fig. 2 of piston 35Mobile, piston 35 closely presses close to form sealing, the still retaining hole of fluid in sealing rear piston surface with rock core model 2Gap seepage state, does not change the flowing property on rock core model 2 borders.
Consider the effect of gravity, the height of inlet 31 that is arranged on row's driving device 3 of rock core model 2 one sides is lowIn the height of inlet 31 of row's driving device 3 that is arranged on rock core model 2 opposite sides, as shown in figure 10, left side is highSpending lower inlet 31 is saturation water entrance or saturated oil outlet, and the inlet 31 that right side height is higher is saturatedThe entrance of water out or saturated oils, arrow C represents direction and the streamline initial position that saturation water is mobile, arrow D representsThe direction that saturated oils is mobile and streamline initial position.
A displacement test system for large scale physical model, the displacement test system of this large scale physical model containsThe fluid expulsion saturation device of the large scale physical model of stating, the inlet of row's driving device 3 of rock core model 2 one sides31 are connected with fluid injection device by pipeline 4, and the inlet 31 of row's driving device 3 of rock core model 2 opposite sides is logicalCross pipeline 4 and be connected with fluid collection device, as shown in Figure 5, this fluid injection device comprise the first injection pump 51,The second injection pump 52, the 3rd injection pump 53, intermediate receptacle 9, the first valve 71, second valve 72, the 3rd valve 73,Four valves 74., the 5th valve 75. This fluid collection device comprises collecting tank 8, the 6th valve 76, the 7th valve 77, the 8thValve 78, the 9th valve 79, the tenth valve 710, as shown in Figure 5. The displacement test system of this large scale physical model alsoContain autoclave 6, the fluid expulsion saturation device of this large scale physical model is arranged in autoclave 6.
Taking saturated formation water and saturated oils as example, illustrate below in conjunction with Fig. 1 and Fig. 5 large scale thing of the present inventionThe reason fluid expulsion saturation device of model and the course of work of displacement test system thereof, rock core model 2 is of a size of50cmX50cmX10cm。
1, Preparatory work of experiment
Shown in Figure 10, row's driving device 3 described in two bases is sticked on respectively to rock core model 2 with fluid sealantThe bottom of the end face of and the top of another end face. When model saturation water, enter from bottom inlet, when saturated oilsEnter from top entrance, can utilize like this Action of Gravity Field to expand swept volume as far as possible, streamline position as shown in figure 10,Arrow C represents direction and the streamline initial position that saturation water is mobile, and arrow D represents direction and the streamline that saturated oils is mobileInitial position.
Successively smoothen curing glue on the surface of rock core model 2 and carry out encapsulation process, in row's driving device 3 is sealed in, i.e. shellBody 1 solidifies glue, places it in autoclave 6 after curing stablizing for placing 24 hours. According to Fig. 5 tube connectorLine 4 and each device, fill formation water in intermediate receptacle 9, and all valves are in closed condition.
2, the interior saturated formation water process of rock core model 2
First rock core model 2 is vacuumized, and the temperature, pressure of interior autoclave 6 confined pressure fluid is adjusted to experimental designValue, more than stable 24h.
Secondly, row's driving device 3 and rock core model 2 form the operation of passage. The first valve 71 is two-way valve, the first valve71 point to the 3rd valve 73 and open the 3rd valve 73, open the 4th valve 74, the 5th valve 75. Meanwhile, flow process right sidePoint, the 6th valve 76 is two-way valve, the 6th valve 76 points to the 8th valve 78 and opens the 8th valve 78, unlatching the 9th valve 73,The tenth valve 710. Open the second injection pump 52, make distilled water arrange respectively the first film port 333 of driving device 3 by both sidesAfter the first elastic membrane 332, the first elastic membranes 332 that enter expand, promotion stressed plate 36 and piston 35 move down (secondWhen injection pump 52 pressure reach 0.5MPa, termination of pumping), both sides row driving device 3 forms passage with rock core model 2;
Again, rock saturation history. Open the first injection pump 51, formation water (saturated solution) is passed through to inflow entrance 38Be injected in rock core model 2 with desin speed, in Fig. 1, left side row's driving device 3 is injection end, row's driving device on right side3 is output end. When saturation water, should adopt corresponding saturated velocity according to rock core permeability. Permeability is low, saturated speedSpend lowly, prevent fingering phenomenon, fluid front shape in a row is advanced. Saturation water flow process distribution as shown in figure 10,First, along rock bottom seepage flow, evenly advance to top.
With 30% porosity calculation, saturated liquid measure otherwise be less than 3 times of pore volumes. The saturated later stage, timing ga(u)ge volume productionOutput and injection rate, in the time that both are equal, illustrate rock core model saturation, closes the first injection pump 51.
3, the interior saturated oils process of rock core model 2
When saturated oils, the intermediate receptacle 9 of saturated solution is connected with row's driving device 3 on right side, is oil for experiment in container,Left side row's driving device 3 is output end. Open the first injection pump 51, inject with desin speed. Saturated oils flowsThe distribution of process as shown in figure 10, first along rock core model 2 top seepage flow, is evenly released water to bottom. Work as outputWhile holding no longer output water, illustrate that rock core saturated oils is complete.
4, prepare next stage displacement test.
The row's of closing driving device 3. The first valve 71 points to the 5th valve 75 and opens the 5th valve 75, unlatching second valve 72,The 3rd valve 12. Meanwhile, flow process right side part, the 6th valve 76 points to the tenth valve 710 and opens the tenth valve 710, opensOpen the 6th valve 76, the 7th valve 77. Open the second injection pump 52, make distilled water arrange of driving device 3 by both sides respectivelyAfter expanding, the second elastic membrane 335, the second elastic membranes 335 that two film ports 336 enter promote stressed plate 36 and pistonOn 35, move (when the second injection pump 52 pressure reach 0.5MPa, termination of pumping), the piston 35 of both sides row driving device 3With rock core model 2 close contacts, the row's of formation driving device 3 seals with rock core model 2.
Afterwards, can carry out displacement test.
Adopt conventional saturation process and this method to carry out same group of experiment, the saturation effect of two kinds of methods of contrast.
Experiment content: temperature 50 C, pressure 10MPa; Size 50cm × 50cm × the 10cm of rock core model 2; FullAnd formation water. Porosity, permeability, total pore size volume are as table 1, and porosity and permeability is with the sampling of identical rockTest obtains. Formation water derives from domestic certain oil field.
Experimental implementation process is as aforementioned, and table 1, Figure 11 have listed the saturation effect contrast of two kinds of saturated formation waters of method.Table 1 has provided the basic data of different rock core models and the formation water saturated volume of corresponding distinct methods and saturated journeyDegree; In Figure 10, two curves represent that respectively different aperture degree rock core model adopts conventional method and the saturated ground of inventive methodLayer water saturation degree.
Table 1 rock core basic data and experimental result contrast
Embodiment 2
In the present embodiment, the row's driving device 3 in the fluid expulsion saturation device of this large scale physical model is multitubeBe mainly applicable to heterogeneous core model.
The difference of the present embodiment and embodiment 1 is: in the present embodiment, row's driving device 3 is multiple packoff nipples 37,An inlet 31 is all contained in one end of each packoff nipple 37, one end of sealing pipe nipple 37 and rock core model 2Connect, the other end of packoff nipple 37 is communicated with the outside of housing 1, and as shown in Figure 6, Figure 7, sealing is shortThe inlet 31 of one end of joint 37 contacts with rock core model 2, and the other end of packoff nipple 37 is communicated with pipeline 4,In Fig. 6, the implication of A, B is identical with Fig. 1.
In the present embodiment, a kind of displacement test system of large scale physical model, contains large described in the present embodimentThe fluid expulsion saturation device of size physical model, the inlet 31 of row's driving device 3 of rock core model 2 one sides passes throughPipeline 4 is connected with fluid injection device, and the inlet 31 of row's driving device 3 of rock core model 2 opposite sides passes through pipeline4 are connected with fluid collection device, as shown in Figure 8. The displacement test system of this large scale physical model and embodiment 1Difference be to contain valve 91, control the inlet 31 on packoff nipple 37 with valve 91. The structure of valve 91As shown in Figure 9, valve 91 contains single valve outlet 911, valve rod 912, single valve 913, passage 914, entrance 915.In addition, the displacement test system of this large scale physical model also contains autoclave 6, the fluid of this large scale physical modelRow drives saturation device and is arranged in autoclave 6.
The above, be only specific embodiments of the invention, can not limit the scope that invention is implemented with it, so its etc.With the displacement of assembly, or equivalent variations and the modification done according to scope of patent protection of the present invention, this patent all should still be belonged toThe category of containing.
Claims (8)
1. a fluid expulsion saturation device for large scale physical model, is characterized in that, described large scale physics mouldThe fluid expulsion saturation device of type comprises housing (1) and the rock core model (2) by housing (1) sealed envelope, rock coreThe both sides of model (2) are respectively arranged with can be to row's driving device (3) of injection fluid in rock core model (2), and row drivesDevice (3) contains the multiple inlets (31) that contact with the surface of rock core model (2);
The main body (32) of row's driving device contains the cavity (33) of sealing, and multiple inlets (31) row of being arranged on drivesThe sidewall (34) that contacts with rock core model (2) of main body (32) of device is gone up, inlet (31) can with skyChamber (33) is communicated with, and one end sealing of piston (35) is plugged in inlet (31), and sidewall (34) is provided with and skyThe inflow entrance (38) that chamber (33) is communicated with.
2. the fluid expulsion saturation device of large scale physical model according to claim 1, is characterized in that:The other end of piston (35) is fixedly connected with stressed plate (36), and stressed plate (36) can be divided into cavity (33)The first half cavitys (331) and the second half cavitys (334), the first half cavitys (331) can connect with inlet (31)Logical.
3. the fluid expulsion saturation device of large scale physical model according to claim 2, is characterized in that:In the first half cavitys (331), be provided with the first elastic membrane (332), the sidewall (34) of the main body (32) of row's driving deviceBe provided with the first film port (333) being communicated with the first elastic membrane (332), when from the first film port (333) toWhile injecting fluid in one elastic membrane (332), stressed plate (36) and piston (35) can move, the first half cavitys(331) can be communicated with inlet (31).
4. the fluid expulsion saturation device of large scale physical model according to claim 2, is characterized in that:In the second half cavitys (334), be provided with the second elastic membrane (335), the sidewall (34) of the main body (32) of row's driving deviceBe provided with the second film port (336) being communicated with the second elastic membrane (335), when from the second film port (336) toWhile injecting fluid in two elastic membranes (335), stressed plate (36) and piston (35) can move.
5. the fluid expulsion saturation device of large scale physical model according to claim 2, is characterized in that:Stressed plate (36) is made up of multiple stressed (361), hinged between adjacent two stressed (361), piston(35) the other end is fixedly connected with stressed (361).
6. the fluid expulsion saturation device of large scale physical model according to claim 1, is characterized in that:Be arranged on the height of inlet (31) of row's driving device (3) of rock core model (2) one sides lower than being arranged on rock core mouldThe height of the inlet (31) of row's driving device (3) of type (2) opposite side.
7. a displacement test system for large scale physical model, is characterized in that: the driving of this large scale physical modelContain in claim 1～6 the saturated dress of fluid expulsion of the large scale physical model described in any one for experimental systemPut, the inlet (31) of row's driving device (3) of rock core model (2) one sides is connected with fluid by pipeline (4)Injection device, the inlet (31) of row's driving device (3) of rock core model (2) opposite side connects by pipeline (4)Be connected to fluid collection device.
8. the displacement test system of large scale physical model according to claim 7, is characterized in that: this is largeThe displacement test system of size physical model also contains autoclave (6), and the fluid expulsion of this large scale physical model is saturatedDevice is arranged in autoclave (6).
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