CN109667575B - Probe method well pattern model water drive effect measuring device - Google Patents
Probe method well pattern model water drive effect measuring device Download PDFInfo
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- CN109667575B CN109667575B CN201811244635.0A CN201811244635A CN109667575B CN 109667575 B CN109667575 B CN 109667575B CN 201811244635 A CN201811244635 A CN 201811244635A CN 109667575 B CN109667575 B CN 109667575B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000004576 sand Substances 0.000 claims description 58
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- 230000001105 regulatory effect Effects 0.000 claims description 16
- 239000012530 fluid Substances 0.000 claims description 13
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 9
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
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- 238000005429 filling process Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
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Abstract
The invention discloses a probe method well pattern model water drive effect measuring device which comprises a liquid supply mechanism, a reservoir model mechanism and a measuring mechanism, wherein the reservoir model mechanism is a part for simulating a heterogeneous reservoir, the liquid supply mechanism is a part for injecting required liquid into the reservoir simulated by the reservoir model mechanism, and the measuring mechanism is a part for measuring the oil and water saturation of the reservoir simulated by the reservoir model mechanism. The device has a simple structure, and can research the water drive effect of the heterogeneous reservoir and the ultimate recovery ratio of the reservoir under different injection and production conditions by simulating a five-point well pattern system and a reverse five-point well pattern system.
Description
Technical Field
The invention belongs to the technical field of research on water drive effect of development of heterogeneous reservoirs of oil and gas reservoirs, and particularly relates to a probe method well pattern model water drive effect measuring device which is suitable for simulating experiments on water drive effect of the heterogeneous reservoirs and is suitable for researching the recovery ratio of the heterogeneous reservoirs under different injection and production conditions by using a five-point method (anti-five-point method) well pattern.
Background
In the process of oil and gas reservoir development, due to the influence of reservoir heterogeneity (such as permeability), the water flooding effects of different production layers must have certain difference, meanwhile, the pressure control of a production well and an injection well also influences the oil well productivity, and only by correctly recognizing reservoir oil-water migration and displacement rules and reasonably controlling the oil well pressure, the oil and gas exploitation can be correctly guided, the final recovery rate is improved, and the economic benefit maximization is realized. The oil gas generation, storage and exploitation processes of a real stratum can be simulated by an experimental method through establishing a well pattern model, people can be scientifically helped to know the exploitation rule of oil gas, the water drive effect of a heterogeneous reservoir can be correctly analyzed, and the pressure of each well in a well pattern system can be reasonably adjusted.
At present, a saturation probe method is widely applied to a homogeneous model, but is rarely applied to a large heterogeneous model, and the difficulty of simulating the oil-water displacement effect of the heterogeneous reservoir by using a well pattern model is as follows: 1. the similarity between a simulated reservoir and a real heterogeneous reservoir is difficult to ensure, and the contact relation between the real heterogeneous reservoirs should not be simple superposition and should be compact and integrated; 2. the oil-water distribution and the water drive effect in the model are difficult to monitor and describe; 3. the wellhead pressure of the well pattern model is difficult to adjust; 4. heterogeneous reservoir models are less reusable.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a probe method well pattern model water drive effect measuring device which is simple in structure and can be used for researching the water drive effect of a heterogeneous reservoir and the final recovery ratio of the reservoir under different injection and production conditions by simulating a five-point well pattern system and a reverse five-point well pattern system.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
a probe method well pattern model water drive effect measuring device comprises a liquid supply mechanism, a reservoir model mechanism and a measuring mechanism;
the reservoir model comprises a flat box, P probe groups, an injection pipeline and a discharge pipeline system, wherein each probe group consists of two probes, M sand body layers with different permeabilities are filled in the flat box from top to bottom, N probe groups are distributed in each sand body layer, P = M multiplied by N, P, M and N are natural numbers, one end of each probe group distributed in each sand body layer is positioned in the corresponding sand body layer, the other end of each probe group penetrates through the flat box and is positioned outside the flat box, if P is an even number, p/2 probe sets are fixed on the top of the flat box, P/2 probe sets are fixed on the bottom of the flat box, if P is odd, (P-1)/2 or (P +1)/2 probe sets are immobilized on the top of the flat box, and (P +1)/2 or (P-1)/2 probe sets are immobilized on the bottom of the flat box;
the discharge pipeline system comprises a discharge pipeline, a pressure regulating valve and a flowmeter, required liquid is injected into the center of each sand layer through the injection pipeline, the liquid in the edge area of each sand layer is discharged through the discharge pipeline, and the pressure regulating valve is arranged on the discharge pipeline;
the liquid supply mechanism comprises a driving mechanism, an oil container, a water container, a supply pipe, a supply valve and a pressure gauge, the driving mechanism provides injection power for the liquid in the oil container and the liquid in the water container, an inlet of the supply pipe is respectively communicated with the oil container and the water container, the supply valve and the pressure gauge are respectively arranged on the supply pipe, and an outlet of the supply pipe is communicated with an inlet of an injection pipeline;
the measuring mechanism comprises a controller, a resistance tester, a stepping motor, a lead screw, a slide block, a positioning plate and P lead wire groups, wherein the resistance tester and the stepping motor are respectively connected with the controller, the stepping motor is connected with the lead screw, the slide block is connected with the lead screw, two parallel electrodes of the resistance tester are respectively fixed on the slide block, each lead wire group consists of two lead wires, one end of each pair of probe groups, which is positioned outside the flat box, is connected with one corresponding lead wire group, one end of each pair of probe groups, which is positioned outside the flat box, is respectively connected with one end of the two lead wires of the corresponding lead wire group, the other end of each lead wire group is linearly and sequentially fixed on the positioning plate, the lead screw drives the slide block to do linear motion, and the slide block drives the two parallel electrodes of the resistance tester to be sequentially communicated with the two lead wires in each lead wire group.
Still including supporting tilting mechanism, it includes the frame to support tilting mechanism, two optical axes and two optical axis supports, the frame is square frame rack structure, the top of frame is square carriage, the flat case is located the space that square carriage encloses, the one end of two optical axes respectively with the relative both sides wall central authorities fixed connection of flat case, the other end of two optical axes passes the relative both sides frame central authorities of square carriage respectively, two optical axes respectively with square carriage clearance fit, and the other end of two optical axes is respectively through two optical axis support swing joint on square carriage.
The injection pipeline comprises an injection pipe, the injection pipe is vertically arranged in the center of the flat box, the upper port of the injection pipe is arranged in the center of the top of the flat box, the lower port of the injection pipe is positioned in the sand body layer at the bottom, the lower port of the injection pipe is sealed, a plurality of water distribution holes are respectively formed in the injection pipe along the length direction of the injection pipe, the discharge pipeline comprises O discharge pipes, O = MXK, O and K are natural numbers, K discharge pipes are uniformly distributed in the edge area of each sand body layer, inlets of the discharge pipes are positioned in the corresponding sand body layers, outlets of the discharge pipes penetrate through the flat box and are positioned outside the flat box, the number of flow meters and pressure regulating valves is the same as that of the discharge pipes, the pressure regulating valves are arranged on the parts, positioned outside the flat box, of the discharge pipes corresponding to the pressure regulating valves, and the flow of the discharge pipes is measured through the flow meters respectively.
The flow meter is a measuring cylinder, and each measuring cylinder is respectively positioned right below the outlet of the corresponding discharge pipe.
The flat box is a square box, a cuboid cavity is arranged in the flat box, M layers of sand body layers are filled in the cavity, 4M discharging pipes are arranged, and the discharging pipes are respectively arranged at four corners of each layer of sand body layer.
The driving mechanism is an air compressor and a fluid pump, the air compressor is connected with the fluid pump, and the fluid pump is connected with the oil container or the water container.
The top and the bottom plate of the flat box are respectively provided with Q through holes, Q is (P +1)/2, each probe group is fixed on the flat box through the corresponding through hole, and the projections of the probe groups fixed on the top of the flat box in the vertical direction and the projections of the probe groups fixed on the bottom of the flat box in the vertical direction are distributed in a staggered mode.
The top and the bottom of the flat box are respectively provided with a level ruler.
The flat box comprises a box body and a box cover, and the box cover is connected with the box body through bolts.
And the sand body layer in the flat box is filled in a cast-in-place sand filling mode.
Compared with the prior art, the invention has the beneficial effects and advantages that:
1. the flat box belongs to a cast-in-place sand filling model, can accurately simulate a real reservoir, has stable sand filling property and good sand filling effect, avoids the mixing of sand bodies in the sand filling process, can be used for researching the oil-water migration and distribution of the composite positive rhythm and the composite negative rhythm of the reservoir, and has the advantages of easy cleaning and high reusability.
2. According to the invention, the probe sets in each sand layer are uniformly distributed, all the probe sets are uniformly and staggered, the mode of coordinately arranging the probes at the top and the bottom of the flat box is reasonable in design, the operation difficulty in connecting and disassembling the probes is reduced, and the flat box is beautiful and simple.
3. In the invention, the fluid pump and the pressure regulating valve are adopted to accurately regulate and control the pressure of the inlet and the outlet of each sand body layer, thereby facilitating the experimental operation.
4. The invention has the key components of a reservoir model mechanism and a measuring mechanism, and can obtain an accurate oil-water saturation value by accurately measuring the resistivity in a flat box through a probe and accurately processing the data of a control console, thereby solving the problem that the water displacement effect and the oil-water distribution in the existing water displacement measuring device are difficult to accurately monitor.
Drawings
Fig. 1 is a schematic structural diagram of a probe method well pattern model water drive effect measuring device.
Fig. 2 is a partially enlarged schematic view of I in fig. 1.
Fig. 3 is a schematic structural view of the assembly of the supporting and overturning mechanism and the reservoir model mechanism.
Figure 4 is a cross-sectional view of a pallet.
Figure 5 is a top view of the pallet.
The device comprises a plate box 1, a probe set 2, an oil container 3, a water container 4, a supply pipe 5, an air compressor 6, a fluid pump 7, a perforation 8, an injection pipe 9, a discharge pipe 10, a pressure regulating valve 11, a measuring cylinder 12, a controller 13, a resistance tester 14, a lead screw 15, a positioning plate 16, a lead wire group 17, a parallel electrode 18, a horizontal ruler 19, a supply valve 20, a pressure gauge 21, a support 22, a square support frame 23, an optical axis 24, an optical axis 25, a slide block 26 and a stepping motor 27.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The device for measuring the water drive effect of the probe method well pattern model is shown in figure 1 and comprises a liquid supply mechanism, a reservoir model mechanism, a supporting and overturning mechanism and a measuring mechanism.
The reservoir model mechanism comprises a flat plate box 1, 147 probe groups 2, an injection pipeline and a discharge pipeline system.
The flat box 1 is a square box and comprises a box body and a box cover, and the box cover is connected with the box body through bolts. Through setting up the detachable case lid, can dismantle the case lid get off, conveniently wash the box. The flat box has good sealing performance, and the whole body of the flat box is fully coated with insulating paint, so that the insulating effect is good. And the box cover and the bottom of the box body are respectively provided with a horizontal ruler 19, so that the flat box is always in a horizontal position.
The flat box 1 is internally provided with a cuboid cavity, the length and the width of the cavity are both 32cm, and the height is 7.5 cm. 3 layers of sand body layers with different permeability are filled in the cavity from top to bottom, and the height of each layer of sand body layer is 2.5 cm. The sand body layer of packing is used for simulating different heterogeneous reservoir beds, and at the in-process of sand pack, the sand body layer adopts cast-in-place sand pack's mode to fill, can guarantee the integrality and the stability of sand body like this, simultaneously fine avoided the layer that mixes of different position sand bodies.
The bottom and the cover of the box body are provided with Q through holes 8, Q is more than 74, and the through holes are used for fixing the probe group.
There were 147 probe sets 2, and each probe set 2 was composed of two probes. 49 probe sets 2 are distributed in each sand body layer and distributed in 7 rows and 7 columns, the distance between every two adjacent probe sets 2 in each sand body layer is 5cm, and the distance between every two probes in each probe set 2 is 1 mm. 49 probe sets 2 in the upper sand layer and 25 probe sets 2 in the middle layer are fixed in the through holes 8 on the box cover, and 49 probe sets 2 in the lower sand layer and the other 24 probe sets 2 in the middle layer are fixed in the through holes 8 on the bottom of the box body. The projections of the probe groups 2 fixed on the box cover in the vertical direction and the projections of the probe groups 2 fixed on the bottom of the box body in the vertical direction are distributed in a staggered mode, and the probes are distributed in such a way that the resistance of each sand body layer at each position can be measured. When each probe group is fixed, an insulating coating is coated on the surface of each probe, then an insulating protective sleeve is sleeved outside each probe, and the probe is fixed on the through hole by AB glue and then sealed by an O-shaped sealing ring. One end of each probe group arranged in each sand body layer is positioned in the corresponding sand body layer, and the other end of each probe group is positioned outside the flat box through the through hole.
The probe sets 2 arranged in the upper sand layer are numbered 1-49 in sequence, the probe sets 2 arranged in the upper sand layer are numbered 50-98 in sequence, and the probe sets 2 arranged in the lower sand layer are numbered 99-147 in sequence.
The injection pipeline comprises an injection pipe 9, as shown in fig. 5, the injection pipe 9 is vertically arranged in the center of the flat box, an upper port of the injection pipe 9 is arranged in the center of the top of the flat box, a lower port of the injection pipe 9 is positioned in the sand layer at the lowest part, the lower port of the injection pipe 9 is sealed, and a plurality of water distribution holes are respectively arranged on the injection pipe 9 along the length direction of the injection pipe 9.
The discharge pipeline comprises 12 discharge pipes 10, 12 pressure regulating valves 11 and measuring cylinders, and 12 pressure regulating valves 11 and measuring cylinders are arranged on each discharge pipe 10. Discharge pipes 10 are respectively arranged at four corners of each sand body layer, the inlet of each discharge pipe 10 is positioned in the corresponding sand body layer, and the outlet of each discharge pipe 10 penetrates through the box cover and is positioned outside the flat box 1, as shown in figure 5. Each pressure regulating valve 11 is mounted on a portion of the discharge pipe 10 corresponding thereto, which is located outside the flat tank, and regulates the discharge pressure of the liquid discharged from each discharge pipe. The measuring cylinders 12 are respectively positioned under the outlets of the discharge pipes 10 corresponding to the measuring cylinders, and the flow of liquid discharged by the discharge pipes is collected through the measuring cylinders, so that the measuring cylinders are convenient and simple, and simultaneously, a large amount of liquid discharged by the discharge pipes can be conveniently and timely discharged.
As shown in fig. 3 and 4, the supporting and overturning mechanism includes a frame 22, two optical axes 24 and two optical axis supports 25 (YTP-SHF 8), the frame 22 is a square frame structure, the top of the frame 22 is a square support frame 23, and the flat box 1 is located in a space surrounded by the square support frame 23. One end of each of the two optical axes 24 is fixedly connected with the center of each of the two opposite side walls of the box body, the other end of each of the two optical axes 24 penetrates through the center of each of the two opposite side frames of the square supporting frame 23, the two optical axes 24 are in clearance fit with the square supporting frame 23, and the other ends of the two optical axes 24 are detachably mounted on the square supporting frame 23 through two optical axis supports 25. The flat box can realize 360 upsets through supporting tilting mechanism, when the flat box needs the upset, unscrews the optical axis support, makes two optical axes be in free state, stirs the flat box with the hand, makes the flat box upset to required angle, screws up the optical axis support again, locks the both ends of two optical axes on square carriage.
The liquid supply mechanism comprises an air compressor 6, a fluid pump 7, an oil container 3, a water container 4, a supply pipe 5, a supply valve 20 and a pressure gauge 21. The air compressor 7 is connected to the fluid pump 7, and the fluid pump 7 is connected to the oil tank 3 or the water tank 4. The inlet of the supply pipe 5 is communicated with the oil container 3 and the water container 4, the supply valve 20 and the pressure gauge 21 are respectively arranged on the supply pipe 5, and the outlet of the supply pipe 5 is communicated with the upper port of the injection pipe 9. The injection pressure of the liquid injected into the injection pipe is read by a pressure gauge, and the injection pressure of the liquid injected into the injection pipe is adjusted by a fluid pump.
The measuring mechanism comprises a controller 13, a resistance tester 14, a stepping motor 27, a lead screw 15, a slide block 26, a positioning plate 16 and P lead wire groups 17. The resistance tester 14 and the stepping motor 27 are respectively connected with the controller 13, the stepping motor 27 is connected with the screw rod 15, the sliding block 26 is connected with the screw rod 15, and the two parallel electrodes 18 of the resistance tester 14 are respectively fixed on the sliding block 26. Each lead group 17 is composed of two leads, one end of each pair of probe sets 2 positioned outside the flat box is connected with one end of the corresponding lead group 17, and one end of each pair of probe sets 2 positioned outside the flat box is respectively connected with the two leads of the corresponding lead group 17. The positioning plate 16 is fixed on one side of the bracket 22, and the positioning plate 16 is located obliquely below the square support frame 23, and the positioning plate 16 is horizontally disposed. The other end of each wire group 17 passes through the positioning plate 16 from the top thereof, and the other end of each wire group 17 is fixed in a straight line shape on the positioning plate 16 in turn, and each wire group 17 is numbered according to the corresponding probe, and the number of each wire group 17 is the same as that of the probe group 2 connected thereto. The slide block 26 and the lead screw 15 are located right below the positioning plate 16, the lead screw 15 drives the slide block 26 to do linear motion, and the slide block 26 drives the two parallel electrodes 18 of the resistance tester to be sequentially conducted with the two leads in each lead group 17.
The use method of the probe method well pattern model water drive effect measuring device comprises the following steps:
1. cleaning a flat box, connecting a supply pipe with a nitrogen bottle, opening a supply valve, closing all exhaust pipe valves, injecting the flat box at the pressure of 0.3MPa, stabilizing for 1 hour, checking the air leakage condition of the flat box by soapy water, sealing by a sealant if the flat box leaks, discharging the gas in the flat box, filling sand, continuously pouring the required liquid for saturation in the sand filling process by using a cast-in-place sand filling machine, fixing a box cover by using bolts after the sand filling is finished, closing all the exhaust pipe valves, connecting the supply pipe with a pump, pumping the air in the flat box, checking the leakage again, selecting a proper oil container or a water container from the required liquid for saturation, opening a fluid pump, discharging the air in the supply pipe at a constant flow rate or constant pressure, connecting the supply pipe with the injection pipe, injecting the required liquid for saturation into the flat box, and simultaneously opening all the exhaust pipe valves, adjusting the pressure regulating valve to the required extraction pressure, then collecting liquid by using the measuring cylinder and recording the flow;
the stepping motor is started at the set time, the stepping motor is controlled by the console, so that the stepping speed of the screw rod is 364.5mm, 0.2mm/min is recommended, as each pair of probes is provided with a serial number and corresponds to the moving position of the stepping motor, the moving position of the stepping motor corresponds to the data acquisition time, the data recording is very stable, simultaneously, Fluke software installed in the controller records the acquired oil and water saturation data in real time, different extraction pressures of the simulated three-layer heterogeneous reservoir are reasonably controlled according to an experiment set scheme, the flow of the corresponding discharge pipe is recorded, and the oil and water saturation condition of each layer can be respectively calculated.
Claims (6)
1. The utility model provides a probe method well pattern model water drive effect measuring device which characterized in that: the device comprises a liquid supply mechanism, a reservoir model mechanism and a measuring mechanism;
the reservoir model comprises a flat box, P probe groups, an injection pipeline and a discharge pipeline system, wherein each probe group consists of two probes, M sand body layers with different permeabilities are filled in the flat box from top to bottom, N probe groups are distributed in each sand body layer, P = M multiplied by N, P, M and N are natural numbers, one end of each probe group distributed in each sand body layer is positioned in the corresponding sand body layer, the other end of each probe group penetrates through the flat box and is positioned outside the flat box, if P is an even number, p/2 probe sets are fixed on the top of the flat box, P/2 probe sets are fixed on the bottom of the flat box, if P is odd, (P-1)/2 or (P +1)/2 probe sets are immobilized on the top of the flat box, and (P +1)/2 or (P-1)/2 probe sets are immobilized on the bottom of the flat box;
the discharge pipeline system comprises a discharge pipeline, a pressure regulating valve and a flowmeter, required liquid is injected into the center of each sand layer through the injection pipeline, the liquid in the edge area of each sand layer is discharged through the discharge pipeline, and the pressure regulating valve is arranged on the discharge pipeline;
the liquid supply mechanism comprises a driving mechanism, an oil container, a water container, a supply pipe, a supply valve and a pressure gauge, the driving mechanism provides injection power for the liquid in the oil container and the liquid in the water container, an inlet of the supply pipe is respectively communicated with the oil container and the water container, the supply valve and the pressure gauge are respectively arranged on the supply pipe, and an outlet of the supply pipe is communicated with an inlet of an injection pipeline;
the measuring mechanism comprises a controller, a resistance tester, a stepping motor, a lead screw, a slide block, a positioning plate and P lead wire groups, wherein the resistance tester and the stepping motor are respectively connected with the controller;
the injection pipeline comprises an injection pipe, the injection pipe is vertically arranged in the center of the flat box, the upper port of the injection pipe is arranged in the center of the top of the flat box, the lower port of the injection pipe is positioned in the sand body layer at the bottom, the lower port of the injection pipe is sealed, a plurality of water distribution holes are respectively arranged on the injection pipe along the length direction of the injection pipe, the discharge pipeline comprises O discharge pipes, O = M × K, O and K are natural numbers, K discharge pipes are uniformly distributed in the edge area of each sand body layer, the inlets of the discharge pipes are positioned in the corresponding sand body layers, the outlets of the discharge pipes penetrate through the flat box and are positioned outside the flat box, the number of flow meters and pressure regulating valves is the same as that of the discharge pipes, the pressure regulating valves are arranged on the parts, positioned outside the flat box, of the discharge pipes corresponding to the pressure regulating valves, and the flow of the discharge pipes is respectively measured by the flow meters;
the flow meter is a measuring cylinder, and each measuring cylinder is respectively positioned right below the outlet of the corresponding discharge pipe;
the flat box is a square box, a cuboid cavity is formed in the flat box, M layers of sand body layers are filled in the cavity, 4M discharge pipes are arranged, and four corners of each layer of sand body layer are respectively provided with the discharge pipes;
the top and the bottom plate of the flat box are respectively provided with Q through holes, Q is (P +1)/2, each probe group is fixed on the flat box through the corresponding through hole, and the projections of the probe groups fixed on the top of the flat box in the vertical direction and the projections of the probe groups fixed on the bottom of the flat box in the vertical direction are distributed in a staggered mode.
2. The probe method well pattern model water drive effect measuring device of claim 1, characterized in that: still including supporting tilting mechanism, it includes the frame to support tilting mechanism, two optical axes and two optical axis supports, the frame is square frame rack structure, the top of frame is square carriage, the flat case is located the space that square carriage encloses, the one end of two optical axes respectively with the relative both sides wall central authorities fixed connection of flat case, the other end of two optical axes passes the relative both sides frame central authorities of square carriage respectively, two optical axes respectively with square carriage clearance fit, and the other end of two optical axes is respectively through two optical axis support swing joint on square carriage.
3. The probe method well pattern model water drive effect measuring device of claim 1, characterized in that: the driving mechanism is an air compressor and a fluid pump, the air compressor is connected with the fluid pump, and the fluid pump is connected with the oil container or the water container.
4. The probe method well pattern model water drive effect measuring device of claim 1, characterized in that: the top and the bottom of the flat box are respectively provided with a level ruler.
5. The probe method well pattern model water drive effect measuring device of claim 1, characterized in that: the flat box comprises a box body and a box cover, and the box cover is connected with the box body through bolts.
6. The probe method well pattern model water drive effect measuring device of claim 1, characterized in that: and the sand body layer in the flat box is filled in a cast-in-place sand filling mode.
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