CN103556994B - The experiment detecting system of fractured-vuggy reservoir remaining oil distribution and detection method - Google Patents

The experiment detecting system of fractured-vuggy reservoir remaining oil distribution and detection method Download PDF

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CN103556994B
CN103556994B CN201310585823.0A CN201310585823A CN103556994B CN 103556994 B CN103556994 B CN 103556994B CN 201310585823 A CN201310585823 A CN 201310585823A CN 103556994 B CN103556994 B CN 103556994B
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holding unit
container
valve
oil
core holding
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CN201310585823.0A
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CN103556994A (en
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孙致学
李爱芬
姚军
徐杨
刘钧荣
孙治雷
杨勇
彭得兵
董时正
储少奎
吴永平
刘继芹
聂海峰
朱莎
吴明录
张雅茹
冯建伟
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中国石油大学(华东)
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Abstract

The present invention relates to a kind of experiment detecting system and the method for fractured-vuggy reservoir remaining oil distribution.This experiment detecting system includes constant-flux pump, container containing formation water, processes and imaging system containing the container of compounding crude oil, the container containing contrast medium, cross valve, fractured-vuggy reservoir flat plate model, core holding unit, x-ray tomography scanning system, data, container containing formation water, is connected with three entrances of cross valve by the first pipeline, the second pipeline, the 3rd pipeline respectively containing the container of compounding crude oil, the container containing contrast medium;The outlet of cross valve connects the inlet of core holding unit by pumping into pipeline, and by the output mouth output of core holding unit, institute's product fluid is collected in graduated cylinder.The present invention simulates the water drive oil process under formation condition really, seepage flow mechanism and Remaining Oil Distribution are close with actual mining site water filling, test result has bigger directive significance for filed application, solves current displacement of reservoir oil by filling water process and cannot realize a visual difficult problem.

Description

The experiment detecting system of fractured-vuggy reservoir remaining oil distribution and detection method
Technical field
The invention belongs to the Physical Experiment apparatus field of oil and gas exploitation, concrete, relate to experiment detecting system and the method for a kind of fractured-vuggy reservoir remaining oil distribution.
Background technology
Along with developing rapidly of petroleum industry, oil and gas prospect field constantly expands, and carbonate rock hydrocarbon reservoir finds in a large number.According to statistics, the oil-gas reservoir in the whole world more than 50% is Carbonate Reservoir.Carbonate rock fractured cave type reservoir reservoir space is mainly hole, corrosion hole even solution cavity.Relative to a kind of with the conventional sandstone reservoir of micron order intergranular or intragranular pore or microcrack for, fractured-vuggy reservoir be one have that porosity type is various, pore scale big (grade or even Centimeter Level) oily porous media.It is low that such reservoir waterflooding water drive involves degree, and after water drive, oil water relation is the most complicated, and remaining oil distribution pattern is variation.Fracture-pore reservoir remaining oil micro Distribution rule, genesis mechanism and controlled factordisease become water flooding regime optimization, waterflood project adjusts and improve fracture-pore reservoir waterflood recovery efficiency factor needs the bottleneck of breakthrough badly.
At present, the laboratory experiment method of research remaining oil micro Distribution rule mainly has core analysis, microphysics model and three kinds of methods of flat plate model.Wherein, core analysis, microphysics model belong to microphysics experiment, and flat plate model experiment belongs to Macroscopic physical experiment.Core analysis technology is the method that application oil-containing sheet determines remaining oil saturation, and the method can carry out water flooding degree and remaining oil saturation evaluation to core hole region.But the method displacement process is not visible, it is impossible to carry out data acquisition and graphical analysis and image procossing, it is impossible to produced problem in experimentation and experimental data is made and judged accurately and process by quicklook ground.Microphysics model is the micro scale sweep mechanism that water drive oil is studied in the microcosmic oil drive experiment on emulation glass model based on light-chemical etching, and result can be calculated by the image of experimentation by image analysis system input computer.But owing to using light-chemistry etch techniques to make, its cost of manufacture and producing device require higher, and this class model is generally two dimensional surface form, it is impossible to study vertical upper Remaining Oil Distribution;Simultaneously, solid skeletal is the materials such as glass plate, the macroscopical flat plate model causing model Petrographic Features, wettability characteristics and moulded dimension to make with actual rock differs bigger, it is impossible to the water drive process on performance larger area reservoir model and Remaining Oil Distribution exactly.
It is a kind of experimentation means commonly used in current Macroscopic physical displacement test that application back-up sand method making flat plate model simulates the process of displacement of reservoir oil by filling water.The method has that modelling cost is relatively low, and moulded dimension is relatively large, can reflect plane and vertical upper displacement of reservoir oil by filling water process and the advantage of remaining oil distributed in three dimensions rule.But the many oil production by measuring mouthful end of current experimental system calculate oil displacement efficiency, or rely on the change of the electrode measurement resistivity being arranged on model, the change of oil saturation in indirect reaction model, for research worker, its whole displacement process cannot realize visualization, and cannot remaining oil occurrence status in hole, dissolution pore and controlled factordisease after quantitative assessment water drive, constrain flat plate model application in the detection of fractured-vuggy reservoir waterflooding extraction microscopic remaining oil distribution rule and Enrichment Mode research.
Summary of the invention
For overcoming defect of the prior art, the present invention provides a kind of experiment detecting system and the method for fractured-vuggy reservoir remaining oil distribution, and the test in laboratory for fractured-vuggy reservoir three dimensions water drive oil migration rule and remaining oil distribution provides a kind of new system and method.
For achieving the above object, the present invention uses following proposal:
A kind of experiment detecting system of fractured-vuggy reservoir remaining oil distribution, including: constant-flux pump, container containing formation water, process and imaging system containing the container of compounding crude oil, the container containing contrast medium, cross valve, fractured-vuggy reservoir flat plate model, core holding unit, x-ray tomography scanning system, data, it is characterised in that:
Constant-flux pump is full of distilled water and produces stable pressure to drive the container containing formation water, containing the fluid in the container of compounding crude oil and the container containing contrast medium as displacing medium;
Cross valve has three entrances and an outlet, container containing formation water, is connected with three entrances of cross valve by the first pipeline, the second pipeline, the 3rd pipeline respectively containing the container of compounding crude oil, the container containing contrast medium;
The outlet of cross valve connects the inlet of core holding unit by pumping into pipeline, container containing formation water, enter from the inlet of core holding unit containing the fluid in the compounding container of crude oil, the container containing contrast medium, fractured-vuggy reservoir flat plate model is entered through rock core plug, then by producing the rock core plug in exit by output mouth output, the production process of simulated production well, institute's product fluid is collected in graduated cylinder;
X-ray tomography scanning system includes X-ray tube and detector;
Seam hole type flat plate model and core holding unit are integrally placed between X-ray tube and the detector of x-ray tomography scanning system, the detector of x-ray tomography scanning system is connected with data process and imaging system by data line, the photosignal of scanning is transferred to data and processes and imaging system, records the whole process of water drive oil and imaging shows.
Further, constant-flux pump divides three tunnels with the container containing formation water, to contain compounding crude oil respectively through the first valve, the second valve, the 3rd valve by pipeline container and the container containing contrast medium are connected.
Further, the contrast medium filled in the described container containing contrast medium is iodized oil contrast medium, and iodized oil contrast medium is the bonding agent of poppy seed oil and iodine, and iodized oil contrast medium is 40% containing iodine concentration.
Further, pump into pipeline and be provided with the 4th valve.
Further, core holding unit is hollow cuboid, and core holding unit includes front capping, rear seal-cover, left sealing cap, right aling cap, upper cover, lower capping, is tightly connected between core holding unit six capping;Left sealing cap, right aling cap at core holding unit set inlet and output mouth respectively, and upper cover arranges hydraulic output, and lower capping arranges hydraulics inlet.
Further, the rock core plug of hollow it is equipped with in the left sealing cap of core holding unit, the inner side of right aling cap;Rock core plug is shaped as annular cuboid, and hollow space is rectangle, and the size size horizontal with rock core is corresponding consistent.
Further, cartridge is hollow cuboid, left and right uncovered, hydraulics inlet the liquid entered can to cartridge up and down before and after four faces pressurize;Fractured-vuggy reservoir flat plate model is set in cartridge;
Inside rock core plug and being provided with seal gasket between cartridge to seal, seal gasket shape is annular rectangular shape, and hollow space size is consistent with rock core correspondingly-sized;Fractured-vuggy reservoir flat board rock core is compressed by rock core plug by seal gasket.
Further, by rock core plug elastic mounting, sealing between rock core plug and core holding unit, centered by described rock core plug rubber cushion, position is drilled with the cuboid seal gasket of a circular hole, and by middle part circular hole, the inlet of core holding unit is connected with upstream line.The outside length and width size of rock core plug rubber cushion and rock core plug, core holding unit lateral cross section inside dimension are consistent.
Further, core holding unit upper cover and lower capping left and right end portions are provided with bolt parallel, and the external screw thread of bolt is connected cooperation with the female thread of rock core plug;Core holding unit upper cover and lower capping are connected with rock core plug by connecting bolt and fix, it is achieved the one of core holding unit, rock core plug and hole type reservoir flat board rock core is fixed-type;The rubber tube sealing fractured-vuggy reservoir flat plate model in core holding unit is pressurizeed by the pipeline of hydraulic conveyor by the hydraulics inlet of core holding unit, can simulate Different Strata stress level;It is provided with the 5th valve at the hydraulic output of core holding unit, by the switch of the 5th valve, the pressure regulation and control of the ring to fractured-vuggy reservoir flat plate model can be realized.
The experiment detection method of a kind of fractured-vuggy reservoir remaining oil distribution, applies the experiment detecting system of above-mentioned fractured-vuggy reservoir remaining oil distribution, and step is as follows:
Step 1: use the seam hole type rock sample with hole and corrosion hole being taken from surface occurence district to carry out cutting, polishing according to the demand studying size, prepare fractured-vuggy reservoir flat plate model;
Step 2: cleaned by seam hole type flat plate model, inserts rock sample temperature and controls to dry in the temperature control oven of 100~105 DEG C and weigh, recording quality;
Step 3: the seam hole type flat plate model cleaning, drying also known quality is inserted clamper, connect the pipeline of evacuation the most again, close the 4th valve, evacuate 2~8 hours, open the first valve and the 4th valve, start constant-flux pump, with the flow velocity of 0.01ml/min, saturation water inlet in core holding unit is pumped into seam hole type flat plate model, make flat plate model the most saturated by water;
Step 4: close the first valve, the inlet of core holding unit is opened, open the second valve, the 3rd valve simultaneously, start constant-flux pump, the contrast medium fluid-mixing of the compounding crude oil in the container containing compounding crude oil with the container containing contrast medium is pumped into seam hole type flat plate model, the force value of the hydraulic conveyor of regulation core holding unit, simulated formation pressure, the water yield of the core holding unit output mouth simultaneously measuring core holding unit is saturated oil mass, observe graduated cylinder and displace the water yield when not being further added by, close constant-flux pump;
Step 5: open x-ray tomography system ray tube opposite joint hole type flat plate model and be scanned, being processed and imaging system by the signal data line input data connecting detector, display is dissolved with contrast medium crude oil initial oil distribution situation in fractured-vuggy reservoir flat plate model;
Step 6: Boot Model internal structure scanning system, close the second valve and the 3rd valve, open the first valve, start constant-flux pump, carry out displacement of reservoir oil by filling water experiment, the X-ray tube of scanning system produces ray scanning flat plate model, and the photosignal input data that will transmit through fractured-vuggy reservoir flat plate model by connecting the data line of detector process and imaging system, and in the type flat plate model internal void of display seam hole, water drive contains oil migration process and the change of remaining oil distribution situation of contrast medium in real time;The liquid of the output in the core holding unit output mouth of core holding unit collected by graduated cylinder, owing to profit is immiscible, graduated cylinder presents the lower water distribution situation that oils, oil, the volume of water in production fluid volume is measured respectively by cylinder scale, when in graduated cylinder aqueous reach 98% time, close constant-flux pump, calculate graduated cylinder cumulative oil production;
Step 7: start to flood pot test process to terminate from step 5, x-ray tomography system whole process scans, processed by data and the display water drive oil migration characteristics in real time of imaging system, fractured-vuggy reservoir flat plate model water drive oil process can be visualized, simultaneously, crude quality is gone out by displacement, it is achieved the qualitative evaluation to the quantitatively characterizing of Remaining Oil Distribution internal after fractured-vuggy reservoir water drive with origin mechanism in conjunction with the port of export.
Relative to prior art, beneficial effects of the present invention is as follows: owing to have employed large scale fractured-vuggy reservoir flat plate model and adding ring pressure device to simulate reservoir pressure, to use the formation water displacement compounding crude oil containing dissolved gas in oil, simulate the water drive oil process under formation condition really, its seepage flow mechanism and Remaining Oil Distribution are close with actual mining site water filling, and test result has bigger directive significance for filed application;Simultaneously, compounding crude oil is dissolved with X-ray contrast medium, by x-ray tomography system, displacement of reservoir oil by filling water overall process carried out real time scan and realize visualization in imaging display system, solving and be currently based on the displacement of reservoir oil by filling water process of large scale true rock flat plate model and cannot realize a visual difficult problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of the experiment detecting system of fractured-vuggy reservoir remaining oil distribution;
Fig. 2 is that the fractured-vuggy reservoir flat plate model core holding unit having and adding ring pressure is along inlet-output mouth vertical section schematic diagram;
Fig. 3 is flat plate model core holding unit A-A profile;
Fig. 4 is flat plate model core holding unit B-B profile;
Fig. 5 a is rock core plug left view;
Fig. 5 b is rock core plug profile;
Fig. 6 a is seal gasket left view;
Fig. 6 b is seal gasket profile;
Fig. 7 a is rock core plug rubber cushion left view;
Fig. 7 b is rock core plug rubber cushion profile;
In figure, 1, constant-flux pump, 2, first valve, 3, second valve, 4, 3rd valve, 5, container containing formation water, 6, container containing compounding crude oil, 7, container containing contrast medium, 8, cross valve, 9, 4th valve, 10, fractured-vuggy reservoir flat plate model, 11, graduated cylinder, 12, core holding unit, 13, X-ray tube, 14, detector, 15, data process and imaging system, 16, core holding unit inlet, 17, core holding unit output mouth, 18, rock core plug, 19, cartridge, 20, hydraulic conveyor, 21, hydraulics inlet, 22, hydraulic output, 23, 5th valve, 24, seal gasket, 25, rock core plug rubber cushion, 26, bolt, 27, Pressure gauge.
Detailed description of the invention
As shown in Figure 1, the experiment detecting system of fractured-vuggy reservoir remaining oil distribution, including: constant-flux pump 1, container 5 containing formation water, processing and imaging system 15 containing the container 6 of compounding crude oil, the container 7 containing contrast medium, cross valve 8, fractured-vuggy reservoir flat plate model 10, core holding unit 12, x-ray tomography scanning system, data, x-ray tomography scanning system includes X-ray tube 13 and detector 14.
Container 6 and the container 7 containing contrast medium that constant-flux pump 1 divides three tunnels with the container 5 containing formation water, to contain compounding crude oil respectively through first valve the 2, second valve the 3, the 3rd valve 4 by pipeline are connected;Constant-flux pump is full of distilled water and produces stable pressure to drive the container 5 containing formation water, containing the fluid in the container 6 of compounding crude oil and the container 7 containing contrast medium as displacing medium.Fluid in constant-flux pump 1 optionally can be pumped into the container 5 containing formation water, containing compounding the container 6 of crude oil, the container 7 containing contrast medium by controlling the switch of first valve the 2, second valve the 3, the 3rd valve 4.
The contrast medium filled in the described container 7 containing contrast medium is iodized oil contrast medium, iodized oil contrast medium is the bonding agent of poppy seed oil and iodine, iodized oil contrast medium is 40% containing iodine concentration, iodine is nonpolar molecule, and vegetable oil has long nonpolar group, therefore iodine can be dissolved in vegetable oil, additionally has undersaturated carbon-carbon bond in vegetable oil, therefore can also be with halogen iodine generation additive reaction, therefore iodized oil can be dissolved in crude oil.
Cross valve 8 has three entrances and an outlet, container 5 containing formation water, is connected with three entrances of cross valve 8 by the first pipeline, the second pipeline, the 3rd pipeline respectively containing the container 6 of compounding crude oil, the container 7 containing contrast medium.
As in figure 2 it is shown, core holding unit is hollow cuboid, core holding unit 12 includes front capping, rear seal-cover, left sealing cap, right aling cap, upper cover, lower capping (in this article, left and right refers to laterally, paper inward-outward direction refers to longitudinal direction, lower same).It is tightly connected between core holding unit six capping;Left sealing cap, right aling cap at core holding unit 12 set inlet 16 and output mouth 17 respectively, and upper cover arranges hydraulic output 22, and lower capping arranges hydraulics inlet 21.
The rock core plug 18 of hollow it is equipped with in the left sealing cap of core holding unit 12, the inner side of right aling cap.As it is shown in figure 5, rock core plug 18 is shaped as annular cuboid, hollow space is rectangle, and size is corresponding consistent with the size of rock core longitudinal direction.
Cartridge 19 is hollow cuboid, left and right uncovered, hydraulics inlet 21 liquid entered can to cartridge up and down before and after four faces pressurize.Fractured-vuggy reservoir flat plate model 10 is set in cartridge 19.
Being provided with seal gasket 24 inside rock core plug 18 and between cartridge 19 to seal, as shown in Figure 6, seal gasket 24 shape is annular rectangular shape, and hollow space size is consistent with rock core correspondingly-sized.Fractured-vuggy reservoir flat board rock core 10 is compressed by rock core plug 18 by seal gasket 24.
, sealing fixing by rock core plug rubber cushion 25 between rock core plug 18 and core holding unit 12.As it is shown in fig. 7, position is drilled with the cuboid seal gasket of a circular hole centered by described rock core plug rubber cushion 25, by middle part circular hole, the inlet 16 of core holding unit 12 is connected with upstream line.The outside length and width size of rock core plug rubber cushion 25 and rock core plug 18, core holding unit 12 longitudinal cross-section inside dimension are consistent, it is ensured that realize sealing when fluid passes through.
Core holding unit 12 upper cover and lower capping left and right end portions are provided with bolt 26 parallel, and the external screw thread of bolt 26 is connected cooperation with the female thread of rock core plug 18.Core holding unit 12 upper cover and lower capping are connected with rock core plug 18 by connecting bolt 26 and fix, it is achieved the one of core holding unit 12, rock core plug 18 and hole type reservoir flat board rock core 10 is fixed-type.
The rubber tube 19 sealing fractured-vuggy reservoir flat plate model 10 in core holding unit 12 is pressurizeed by the pipeline of hydraulic conveyor 20 by the hydraulics inlet 21 of core holding unit 12, different pressures value can be shown by Pressure gauge 27, thus simulate Different Strata stress level.It is provided with the 5th valve 23 at the hydraulic output 22 of core holding unit 12, by the switch of the 5th valve 23, the pressure regulation and control of the ring to fractured-vuggy reservoir flat plate model 10 can be realized.
The outlet of cross valve 8 connects the inlet 16 of core holding unit 12 by pumping into pipeline, pump into pipeline and be provided with the 4th valve 9,4th valve 9 can close pipeline, prevent the container 5 containing formation water, containing the fluid in the container 6 of compounding crude oil, the container 7 containing contrast medium when model evacuation at differential pressure action under enter fractured-vuggy reservoir flat plate model 10.Can ensure that the container 5 containing formation water by four switches of cross valve 8, respectively enter fractured-vuggy reservoir flat plate model 10 containing the compounding container 6 of crude oil, the contained fluid of container 7 containing contrast medium, and prevent fluid at the container 5 containing formation water, containing mutually channelling between the compounding container 6 of crude oil, the container 7 containing contrast medium.Container 5 containing formation water, enter from the inlet 16 of core holding unit 12 containing the fluid in the compounding container 6 of crude oil, the container 7 containing contrast medium, fractured-vuggy reservoir flat plate model 10 is entered through rock core plug 18, then by the rock core plug 18 at output mouth 17 by output mouth 17 output, the production process of simulated production well, institute's product fluid is collected in graduated cylinder 11.
Seam hole type flat plate model 10 and core holding unit 12 are integrally placed between the X-ray tube 13 of x-ray tomography scanning system and detector 14, during experiment is carried out, open scanning system, the fluid distrbution state in real time record seam hole type flat plate model 10.
The detector 14 of x-ray tomography scanning system is connected with data process and imaging system 15 by data line, and the photosignal of scanning is transferred to data and processes and imaging system 15, records the whole process of water drive oil and imaging shows.
Carrying out the detection method of remaining oil micro Distribution rule during fractured-vuggy reservoir displacement in flooding, apply the experiment detecting system of above-mentioned fractured-vuggy reservoir remaining oil distribution, step is as follows:
Step 1: use the seam hole type rock sample with hole and corrosion hole being taken from surface occurence district to carry out cutting, polishing according to the demand studying size, prepare fractured-vuggy reservoir flat plate model;
Step 2: cleaned by seam hole type flat plate model, inserts rock sample temperature and controls to dry in the temperature control oven of 100~105 DEG C and weigh, recording quality;
Step 3: the seam hole type flat plate model 10 cleaning, drying also known quality is inserted clamper 12, connect the pipeline of evacuation the most again, close the 4th valve 9, evacuate 2~8 hours, open the first valve 2 and the 4th valve 9, start constant-flux pump 1, with the flow velocity of 0.01ml/min, saturation water inlet in core holding unit 12 is pumped into seam hole type flat plate model 10, make flat plate model the most saturated by water;
Step 4: close the first valve, the inlet of core holding unit 12 is opened, open the second valve the 3, the 3rd valve 4 simultaneously, start constant-flux pump 1, the contrast medium fluid-mixing of the compounding crude oil in the container 6 containing compounding crude oil with the container 7 containing contrast medium is pumped into seam hole type flat plate model 10, the force value of the hydraulic conveyor 20 of regulation core holding unit 12, simulated formation pressure, the water yield of the core holding unit output mouth 17 of metering core holding unit 12 is saturated oil mass simultaneously, observe graduated cylinder 11 and displace the water yield when not being further added by, close constant-flux pump 1.
Step 5: open x-ray tomography system ray tube 13 opposite joint hole type flat plate model 10 and be scanned, being processed and imaging system 15 by the signal data line input data connecting detector 14, display is dissolved with contrast medium crude oil initial oil distribution situation in fractured-vuggy reservoir flat plate model 10.
Step 6: Boot Model internal structure scanning system, close the second valve 3 and the 3rd valve 4, open the first valve 2, start constant-flux pump 1, carry out displacement of reservoir oil by filling water experiment, the X-ray tube 13 of scanning system produces ray scanning flat plate model 10, the photosignal input data that will transmit through fractured-vuggy reservoir flat plate model 10 by connecting the data line of detector 14 process and imaging system 15, and in type flat plate model 10 internal void of display seam hole, water drive contains oil migration process and the change of remaining oil distribution situation of contrast medium in real time.The liquid of the output in the core holding unit output mouth 17 of core holding unit 12 collected by graduated cylinder 11, owing to profit is immiscible, graduated cylinder 11 presents the lower water distribution situation that oils, oil, the volume of water in production fluid volume is measured respectively by graduated cylinder 11 scale, when in graduated cylinder 11 aqueous reach 98% time, close constant-flux pump 1, calculate graduated cylinder 11 cumulative oil production.
Step 7: start to flood pot test process to terminate from step 5, x-ray tomography system whole process scans, processed by data and the display water drive oil migration characteristics in real time of imaging system 15, fractured-vuggy reservoir flat plate model 10 water drive oil process can be visualized, simultaneously, crude quality is gone out by displacement, it is achieved the qualitative evaluation to the quantitatively characterizing of Remaining Oil Distribution internal after fractured-vuggy reservoir water drive with origin mechanism in conjunction with the port of export.

Claims (2)

1. an experiment detecting system for fractured-vuggy reservoir remaining oil distribution, including: constant-flux pump, containing stratum The container of water, containing the compounding container of crude oil, the container containing contrast medium, cross valve, fractured-vuggy reservoir flat board mould Type, core holding unit, x-ray tomography scanning system, data process and imaging system, it is characterised in that:
Constant-flux pump is full of distilled water and produces stable pressure to drive the appearance containing formation water as displacing medium Device, the fluid contained in the container of compounding crude oil and the container containing contrast medium;
Cross valve has three entrances and an outlet, container containing formation water, container containing compounding crude oil, Container containing contrast medium is respectively by three entrances of the first pipeline, the second pipeline, the 3rd pipeline and cross valve It is connected;
The outlet of cross valve connects the inlet of core holding unit by pumping into pipeline, container containing formation water, Enter from the inlet of core holding unit containing the fluid in the compounding container of crude oil, the container containing contrast medium, warp Cross rock core plug and enter fractured-vuggy reservoir flat plate model, then by producing the rock core plug in exit by output mouth Output, the production process of simulated production well, institute's product fluid is collected in graduated cylinder;
X-ray tomography scanning system includes X-ray tube and detector;
Seam hole type flat plate model and core holding unit be integrally placed at the X-ray tube of x-ray tomography scanning system with Between detector, the detector of x-ray tomography scanning system is processed and imaging system with data by data line System connects, and the photosignal of scanning is transferred to data and processes and imaging system, enters the whole process of water drive oil Row record and imaging show;
Constant-flux pump by pipeline divide three tunnels respectively through the first valve, the second valve, the 3rd valve with containing stratum The container of water, the container containing compounding crude oil are connected with the container containing contrast medium;
The contrast medium filled in the described container containing contrast medium is iodized oil contrast medium, and iodized oil contrast medium is Poppy seed oil and the bonding agent of iodine, iodized oil contrast medium is 40% containing iodine concentration;
Pump into pipeline and be provided with the 4th valve;
Core holding unit is hollow cuboid, and core holding unit includes front capping, rear seal-cover, left sealing cap, the right side Capping, upper cover, lower capping, be tightly connected between core holding unit six capping;At core holding unit Left sealing cap, right aling cap set inlet and output mouth respectively, and upper cover arranges hydraulic output, and lower capping arranges liquid Press-in mouth;
The rock core plug of hollow it is equipped with in the left sealing cap of core holding unit, the inner side of right aling cap;Rock core plug Being shaped as annular cuboid, hollow space is rectangle, and the size size horizontal with rock core is corresponding consistent;
Cartridge is hollow cuboid, left and right uncovered, hydraulics inlet the liquid entered can be to fluid sealant Cylinder up and down before and after four faces pressurize;Fractured-vuggy reservoir flat plate model is set in cartridge;
Inside rock core plug and being provided with seal gasket between cartridge to seal, seal gasket shape is ring Shape rectangular shape, hollow space size is consistent with rock core correspondingly-sized;Rock core plug passes through seal gasket will Fractured-vuggy reservoir flat board rock core compresses;
By rock core plug elastic mounting, sealing between rock core plug and core holding unit, described rock core Centered by plug rubber cushion, position is drilled with the cuboid seal gasket of a circular hole, and by middle part circular hole, rock core presss from both sides The inlet of holder is connected with upstream line, the outside length and width size of rock core plug rubber cushion and rock core plug, rock Heart clamp holder lateral cross section inside dimension is consistent;
Core holding unit upper cover and lower capping left and right end portions are provided with bolt parallel, the external screw thread of bolt and rock core The female thread of plug connects and coordinates;Core holding unit upper cover and lower capping are by connecting bolt and rock core plug Connect and fix, it is achieved the one of core holding unit, rock core plug and hole type reservoir flat board rock core is fixed-type; Sealing in core holding unit is stitched hole by the hydraulics inlet of core holding unit by the pipeline of hydraulic conveyor The rubber tube of type reservoir flat plate model pressurizes, and can simulate Different Strata stress level;Core holding unit It is provided with the 5th valve at hydraulic output, by the switch of the 5th valve, can realize fractured-vuggy reservoir flat board mould The ring pressure regulation and control of type.
2. an experiment detection method for fractured-vuggy reservoir remaining oil distribution, uses described in claim 1 The experiment detecting system of fractured-vuggy reservoir remaining oil distribution, step is as follows:
Step 1: use the seam hole type rock sample with hole and corrosion hole being taken from surface occurence district Carry out cutting, polishing according to the demand of research size, prepare fractured-vuggy reservoir flat plate model;
Step 2: cleaned by seam hole type flat plate model, inserts rock sample temperature and controls the control at 100~105 DEG C Temperature baking oven is dried and weighs, recording quality;
Step 3: the seam hole type flat plate model cleaning, drying also known quality is inserted clamper, the most again Connect the pipeline of evacuation, close the 4th valve, evacuate 2~8 hours, open the first valve and the 4th valve, Start constant-flux pump, with the flow velocity of 0.01ml/min, saturation water inlet in core holding unit is pumped into seam Hole type flat plate model, makes flat plate model the most saturated by water;
Step 4: close the first valve, opens the inlet of core holding unit, open simultaneously the second valve, 3rd valve, starts constant-flux pump, by the compounding crude oil in the container containing compounding crude oil and the container containing contrast medium Contrast medium fluid-mixing pump into seam hole type flat plate model, the pressure of the hydraulic conveyor of regulation core holding unit Force value, simulated formation pressure, the water yield of the core holding unit output mouth simultaneously measuring core holding unit is Saturated oil mass, observes graduated cylinder and displaces the water yield when not being further added by, close constant-flux pump;
Step 5: open x-ray tomography system ray tube opposite joint hole type flat plate model and be scanned, logical Crossing the input data process of signal data line and the imaging system connecting detector, display exists dissolved with contrast medium crude oil Initial oil distribution situation in fractured-vuggy reservoir flat plate model;
Step 6: Boot Model internal structure scanning system, closes the second valve and the 3rd valve, opens One valve, starts constant-flux pump, carries out displacement of reservoir oil by filling water experiment, and the X-ray tube of scanning system produces ray and sweeps Retouch flat plate model, will transmit through the photoelectricity of fractured-vuggy reservoir flat plate model by connecting the data line of detector Signal input data process and imaging system, and in the type flat plate model internal void of display seam hole, water drive contains in real time The oil migration process of contrast medium and the change of remaining oil distribution situation;The rock core of core holding unit collected by graduated cylinder The liquid of the output in clamper output mouth, owing to profit is immiscible, presents the lower water distribution state that oils in graduated cylinder Gesture, measures oil, the volume of water in production fluid volume respectively by cylinder scale, reaches when aqueous in graduated cylinder When 98%, close constant-flux pump, calculate graduated cylinder cumulative oil production;
Step 7: start to flood pot test process to terminate from step 5, x-ray tomography system is omnidistance Scanning, is processed by data and the display water drive oil migration characteristics in real time of imaging system, can store up with opposite joint hole type Layer flat plate model water drive oil process visualizes, and meanwhile, is gone out crude quality in conjunction with the port of export by displacement, Realize the quantitatively characterizing of Remaining Oil Distribution internal after fractured-vuggy reservoir water drive and determining of origin mechanism Property evaluate.
CN201310585823.0A 2013-11-19 2013-11-19 The experiment detecting system of fractured-vuggy reservoir remaining oil distribution and detection method CN103556994B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105986790B (en) * 2015-02-11 2019-02-19 中国石油化工股份有限公司 The microcosmic water drive remaining oil geometry characterizing method of high water-cut reservoir
CN104819990A (en) * 2015-05-11 2015-08-05 中国石油大学(华东) Microscopic displacement experimental system and microscopic displacement experimental method based on CT digital core
CN105089657B (en) * 2015-06-15 2018-05-04 中国石油天然气股份有限公司 The physical simulating method and experimental provision of fracture-cavity type carbonate reservoir hydrocarbons filling
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CN106770377B (en) * 2016-11-23 2019-05-07 东北石油大学 The device and method of remaining oil distribution are monitored during carbon dioxide displacement core
CN107227946A (en) * 2017-04-24 2017-10-03 中国石油天然气股份有限公司 The experimental data acquisition methods and system of displacement test
CN107558999B (en) * 2017-07-03 2021-02-23 恒泰艾普集团股份有限公司 Quantitative prediction method for residual oil in isolated fracture-cavity body
CN108868715B (en) * 2018-06-02 2020-05-01 东北石油大学 Method for determining distribution and migration rule of matrix-high permeability strip chemical flooding residual oil by applying fractal theory
CN109403930B (en) * 2018-11-23 2021-01-29 中国石油天然气股份有限公司 Water displacement simulator
CN110219625A (en) * 2019-02-22 2019-09-10 中国石油大学(华东) Flood pot test system based on 3D printing three-dimensional fracture-pore reservoir model

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201908653U (en) * 2010-12-17 2011-07-27 中国石油天然气股份有限公司 Computerized tomographic (CT) scanning test system for non-homogeneity models
KR20120070453A (en) * 2010-12-21 2012-06-29 세종대학교산학협력단 Development of sequential polymer injection system for conformance control
CN102628354A (en) * 2012-04-12 2012-08-08 东北石油大学 Pore micron-sized oil water distribution recognition and quantification method
CN202788797U (en) * 2012-08-14 2013-03-13 中国石油化工股份有限公司 Inhomogeneous clastic rock horizontal well physical model
CN103063687A (en) * 2013-01-06 2013-04-24 中国石油大学(华东) Device for acquiring and testing microcosmic distribution image of remaining oil in porous medium
CN103216222A (en) * 2013-04-30 2013-07-24 北京科技大学 High temperature and high pressure visual device for simulating microorganism oil displacement and simulating method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201908653U (en) * 2010-12-17 2011-07-27 中国石油天然气股份有限公司 Computerized tomographic (CT) scanning test system for non-homogeneity models
KR20120070453A (en) * 2010-12-21 2012-06-29 세종대학교산학협력단 Development of sequential polymer injection system for conformance control
CN102628354A (en) * 2012-04-12 2012-08-08 东北石油大学 Pore micron-sized oil water distribution recognition and quantification method
CN202788797U (en) * 2012-08-14 2013-03-13 中国石油化工股份有限公司 Inhomogeneous clastic rock horizontal well physical model
CN103063687A (en) * 2013-01-06 2013-04-24 中国石油大学(华东) Device for acquiring and testing microcosmic distribution image of remaining oil in porous medium
CN103216222A (en) * 2013-04-30 2013-07-24 北京科技大学 High temperature and high pressure visual device for simulating microorganism oil displacement and simulating method thereof

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