CN105806750B - A kind of measurement method of microballoon and pore throat in reservoirs matching - Google Patents
A kind of measurement method of microballoon and pore throat in reservoirs matching Download PDFInfo
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- CN105806750B CN105806750B CN201610122174.4A CN201610122174A CN105806750B CN 105806750 B CN105806750 B CN 105806750B CN 201610122174 A CN201610122174 A CN 201610122174A CN 105806750 B CN105806750 B CN 105806750B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention discloses the measurement methods of a kind of microballoon and pore throat in reservoirs matching, prepare the microballoon dispersion of a preset quality concentration；Nucleopore membranes are arranged in filter membrane support plate, the support plate is arranged in the lower part of container；The microballoon dispersion setting of the first preset vol will be taken out in the microballoon dispersion of preparation in a reservoir；It is preset pressure to control the pressure in the container, stand 0.5~4min, open the valve being arranged in the container lower end, obtain the time parameter that the microballoon dispersion often flows out the microballoon dispersion of the second preset vol, according to the time parameter, the closure parameter of the microballoon dispersion is obtained.The measurement method of microballoon provided by the invention and pore throat in reservoirs matching can accurately measure microballoon class profile control agent and pore throat in reservoirs matching, and then realize efficient conformance control, improve injection water application efficiency.
Description
Technical field
The present invention relates to the measurements of water flooding technical field more particularly to a kind of microballoon and pore throat in reservoirs matching
Method.
Background technology
Profile control technique is made to be subsequently implanted into water and stream, to improve by the closure to injecting water high permeable strip
Floood conformance volume reaches and administers reservoir interlayer, in layer and plane heterogeneity, improves the purpose of waterflooding development effect.Microballoon
Class profile control agent particle size range is adjustable, and apparent viscosity is low, easily enters reservoir deep, by pore throat in reservoirs temporarily block up-break through-again
The process temporarily block up-broken through again, while increasing macropore laryngeal resistance, injection water enters small pore throat, directly acts on residue therein
Oil realizes efficient conformance control, improves injection water application efficiency.And the system high temperature resistant, it is with high salt, be not afraid of shearing, can be used
Oil field recharged waste water online injection, ground injection technology is simple, therefore with wide in high water cut oil field improves recovery ratio
Application prospect.
Microballoon class profile control agent is temporarily blocked up-broken through to pore throat in reservoirs-temporarily blocking up again-, and the profile control mechanism broken through again determines its
It is related whether plugging characteristics match with its particle size and pore throat in reservoirs size, only selects pore throat in the grain size and oil reservoir of microballoon
Size matches, and can be only achieved good profile control effect, but there is no corresponding measurement methods in the prior art to measure
The matching of microballoon class profile control agent and pore throat in reservoirs, to be badly in need of a kind of measurement microballoon class profile control agent and pore throat in reservoirs matching
Method.
Invention content
The present invention provides the measurement methods of a kind of microballoon and pore throat in reservoirs matching, can accurately measure microballoon class tune
Agent and pore throat in reservoirs matching are cutd open, and then realizes efficient conformance control, improves injection water application efficiency.
An embodiment of the present invention provides the measurement methods of a kind of microballoon and pore throat in reservoirs matching, including：
Prepare the microballoon dispersion of a preset quality concentration；
Nucleopore membranes are arranged in filter membrane support plate, the support plate is arranged in the lower part of container；
The microballoon dispersion that the first preset vol is taken out in the microballoon dispersion of preparation setting is being held
In device；
It is preset pressure to control the pressure in the container, stands 0.5~4min, and opening is arranged in the container lower end
Valve obtains the time parameter that the microballoon dispersion often flows out the microballoon dispersion of the second preset vol, according to
The time parameter obtains the closure parameter of the microballoon dispersion.
Optionally, nucleopore membranes are arranged when in filter membrane support plate described, the method further includes：
The nucleopore membranes are soaked with deionized water.
Optionally, the pressure in the control container is preset pressure, is specifically included：
Nitrogen cylinder is connected in the other end for the conduit being connect with the upper end of the container；
The pressure in the container is controlled as the preset pressure by controlling the pressurization valve of the nitrogen cylinder.
Optionally, it is provided with pressure controller on the conduit, is more than described default for pressure in the above-described container
It is depressurized when pressure.
Optionally, it is provided with pressure-measuring device on the conduit, for measuring the pressure in the conduit in real time.
Optionally, described that nucleopore membranes are arranged when in filter membrane support plate, the method further includes：
Filter membrane clamper is provided with below the container, the filter membrane support plate is arranged in the filter membrane clamper
In.
Optionally, described according to the time parameter, the closure parameter of the microballoon dispersion is obtained, is specifically included：
According to the time parameter, the filtration volume of the microballoon dispersion is obtained with the change rate of filtration time；
According to the correspondence of the change rate and closure parameter, the closure parameter of the microballoon dispersion is obtained.
Optionally, the pressurization valve is arranged on the conduit between the container and the nitrogen cylinder.
Optionally, the pressurization valve is arranged before the pressure controller.
Optionally, the pressure controller is arranged before the pressure-measuring device.
By one embodiment or multiple embodiments, the invention has the advantages that advantage：
Due to the measurement method of a kind of microballoon and pore throat in reservoirs matching in the embodiment of the present application, nucleopore membranes setting is existed
In filter membrane support plate, the support plate is arranged in the lower part of container, and from prepare a preset quality concentration microballoon dispersion
The microballoon dispersion setting of the first preset vol is taken out in system in a reservoir；It is default to control the pressure in the container
Pressure stands 0.5~4min, opens and valve in the container lower end is arranged, and obtains the microballoon dispersion and often flows out the
The time parameter of the microballoon dispersion of two preset vols obtains the microballoon dispersion according to the time parameter
Closure parameter can accurately measure microballoon class profile control agent in this way, according to the closure parameter and be matched with pore throat in reservoirs
Property, and then realize efficient conformance control, improve injection water application efficiency.
Description of the drawings
Fig. 1 is the structure chart of microballoon and the measuring device of pore throat in reservoirs matching in the embodiment of the present invention；
Fig. 2 is the flow chart of microballoon and the measurement method of pore throat in reservoirs matching in the embodiment of the present invention；
Fig. 3 is the structure chart of filter membrane clamper in the embodiment of the present invention；
Fig. 4 be in the embodiment of the present invention micron order-microballoon dispersion by the filtration volumes of different pore size nucleopore membranes with
Filtration time change rate curve；
Fig. 5 is the mistake that submillimeter level-polymer microballoon dispersion passes through different pore size nucleopore membranes in the embodiment of the present invention
Filter body is accumulated with filtration time change rate curve.
Related label is as follows in attached drawing：
10 --- pressue device, 11 --- pressurization valve, 12 --- pressure controller, 13 --- pressure-measuring device,
20 --- conduit, 30 --- container, 31 --- head cover, 40 --- filter membrane support plate, 41 --- nucleopore membranes, 42 --- filter membrane is clamped
Device, 43 --- upper-part, 44 --- lower component, 50 --- valve, 60 --- measuring instrument.
Specific implementation mode
The present invention provides the measurement methods of a kind of microballoon and pore throat in reservoirs matching, can accurately measure microballoon class tune
Agent and pore throat in reservoirs matching are cutd open, and then realizes efficient conformance control, improves injection water application efficiency.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Referring to Fig. 1, an embodiment of the present invention provides the measurement methods of a kind of microballoon and pore throat in reservoirs matching, including：
S101, the microballoon dispersion for preparing a preset quality concentration；
S102, nucleopore membranes are arranged in filter membrane support plate, the support plate is arranged in the lower part of container；
S103, the microballoon dispersion that the first preset vol is taken out in the microballoon dispersion of preparation is arranged
In a reservoir；
Pressure in S104, the control container is preset pressure, stands 0.5~4min, opens and be arranged in the container
The valve of lower end obtains the time ginseng that the microballoon dispersion often flows out the microballoon dispersion of the second preset vol
Number, according to the time parameter, obtains the closure parameter of the microballoon dispersion.
Wherein, in step S101, can prepare in advance preset vol, preset quality concentration microballoon dispersion, so
Prepared microballoon dispersion is placed in the conical flask with bottle stopper afterwards, and covers bottle stopper, is put into insulating box and is swollen, waits for
With, wherein the temperature in the insulating box is identical as the temperature for the oil reservoir (target reservoir) that needs measure, to avoid because of temperature not
The problem of accuracy that is same and leading to the data measured reduces, alternatively, it is also possible to which prepared microballoon dispersion to be placed in
In other shapes of container with bottle stopper, such as can be round bottle etc., the application is not specifically limited.
Specifically, the preset vol can be determined according to actual amount, for example, can be 200ml, 500ml, 1L,
2L etc., further, the preset quality concentration can be set according to actual conditions, such as can be 0.01kg/m3、
0.1kg/m3、0.3kg/m3Deng.
Next step S102 is executed, in this step, nucleopore membranes are arranged in filter membrane support plate, the support plate is set
It sets in the lower part of container.
In specific implementation process, nucleopore membranes are arranged when in filter membrane support plate described, the nucleopore membranes are spent
Ionized water soaks, and on being laid in the filter membrane support plate, the surface cleaning of the nucleopore membranes, blend compounds circle is kept to compress anti-
Leakage.
Specifically, it is cylindrical micropore that the nucleopore membranes, which can be specifically a kind of even aperture distribution, micro-pore shape,
Filter membrane, and the form of the microballoon is spherical shape so that the nucleopore membranes are big suitable for evaluation microspherulite diameter and pore throat in oil reservoir
Small matching.
Specifically, described nucleopore membranes are arranged when in filter membrane support plate, the method further includes：Under the container
Side is provided with filter membrane clamper, and the filter membrane support plate is arranged in the filter membrane clamper, wherein the filter membrane clamper packet
Upper-part and lower part is included, the upper-part and the lower component are fixed by helixseal, and the filter membrane support plate is fixed on
In the filter membrane clamper, and multiple through-holes are offered in the filter membrane support plate, so that by described in the nucleopore membranes
Microballoon dispersion is flowed downward by the multiple through-hole.
Next it executes in step S103, will be taken out described in the first preset vol in the microballoon dispersion of preparation
Microballoon dispersion is arranged in a reservoir.
Temperature that specifically can be in the microballoon dispersion of the preparation in specific implementation process and the constant temperature
When temperature in case is identical, the microballoon dispersion for taking out first preset vol is then transferred in the container.
Specifically, first preset vol can be set according to the actual needs of experiment, such as can be
50ml, 30ml, 100ml etc., certainly, first preset vol are less than the capacity of the container, and the container is specifically as follows
Cylindrical shape.
Next step S104 is executed, in this step, it is preset pressure to control the pressure in the container, stands 0.5
~4min opens the valve being arranged in the container lower end, obtains the microballoon dispersion and often flow out the second preset vol
The time parameter of the microballoon dispersion obtains the closure parameter of the microballoon dispersion according to the time parameter.
In specific implementation process, when the pressure in the control container is preset pressure, can by with it is described
The other end of the conduit of the upper end connection of container connects nitrogen cylinder, then by controlling the pressurization valve of the nitrogen cylinder to control
It is the preset pressure to state pressure in container, wherein the preset pressure is the pressure in the target reservoir, to avoid because
Pressure is different and the problem of cause the accuracy for the data measured to reduce.
Specifically, it is the preset pressure to accurately control the pressure in the conduit, it can be on the conduit
It is provided with pressure controller, is depressurized when being more than the preset pressure for pressure in the above-described container, it is, of course, also possible to
It is provided with pressure-measuring device on the conduit, for measuring the pressure in the conduit in real time, so as to real-time monitor
Whether the pressure in the container is the preset pressure, and when pressure in the above-described container is more than the preset pressure,
It is depressurized by opening the pressure controller, wherein the pressure controller is specifically as follows pressure reducer.
Specifically, after obtaining the time parameter, according to the time parameter, the microballoon dispersion is obtained
Filtration volume with filtration time change rate；According to the correspondence of the change rate and closure parameter, the microballoon is obtained
The closure parameter of dispersion, wherein the change rate is faster, then characterizes microballoon and pore throat in reservoirs matching is poorer, the change
Rate is slower, then identifies microballoon and pore throat in reservoirs matching is bigger.
For example, can the container be poured into 30mL microballoon dispersions, the head cover of the container is screwed, institute is then passed through
It states and the nitrogen cylinder is connected by the conduit on head cover, it is, for example, 0.05MPa to be forced into preset pressure, stands 1min or so,
After determining device is without gas leakage, the valve being arranged in the container lower end is opened, while starting timing with calculator, often flowed out
2.5mL solution records a filtration time, the time data of 25mL filter liquors is recorded, then using filtration time as abscissa mistake
Filter body product is that ordinate is mapped, and the filtration curve slope i.e. filtration volume obtained is with the change rate Q of filtration time and its closure
Performance is inversely proportional.I.e.：Q=dV/dt, formula 1
Wherein, V-filtration volume/mL, t-filter time/min used in the volume.
Wherein, Q is bigger, and microballoon dispersion is easier by the nucleopore membranes, and closure degree is poorer, i.e., matching is got over
Difference；On the contrary, Q is smaller, microballoon dispersion more not easily passs through nucleopore membranes, and closure degree is better, i.e., matching is better.
Referring to Fig. 2 and Fig. 3, an embodiment of the present invention provides a kind of dresses for measuring microballoon and pore throat in reservoirs matching
It sets, including pressue device 10, conduit 20, container 30, filter membrane support plate 40, valve 50 and measuring instrument 60, pressue device 10 is logical
It crosses conduit 20 to connect with container 30, container 30 is connect by conduit 20 with filter membrane support plate 40, and the setting of container 30 is supported in filter membrane
The top of plate 40 is provided with valve 50, and leading below filter membrane support plate 40 on the conduit 20 below filter membrane support plate 40
20 lower section of pipe is provided with measuring instrument 60.
Wherein, pressue device 10 is specifically as follows nitrogen cylinder, is set on the conduit 20 between pressue device 10 and container 30
It is equipped with pressurization valve 11, when opening pressurization valve 11, the gas in pressue device 10 is enabled to be transported to by conduit 20
In container 30, so that the pressure in container 30 improves.
Specifically, pressure controller 12 is provided on conduit 20 between pressue device 10 and container 30, for holding
Pressure in device 30 is depressurized when being more than the preset pressure, it is, of course, also possible between pressue device 10 and container 30
Conduit 20 is provided with pressure-measuring device 13, for measuring the pressure in conduit 20 in real time, so as to real-time monitor container 30
In pressure whether be the preset pressure, and the pressure in container 30 be more than the preset pressure when, pass through open pressure
Force controller 12 is depressurized, wherein pressure controller 12 is specifically as follows pressure reducer, and conduit 20 and 30 top of container
Head cover 31 is connected so that conduit 20 is identical with the pressure in container 30.
Wherein, on the conduit 20 that pressurization valve 11 is arranged between container 30 and pressue device 10, and pressurization valve 11 is set
It sets before pressure controller 120 and pressure controller 12 is arranged before pressure-measuring device 60.
Specifically, being provided with nucleopore membranes 41 in filter membrane support plate 40, and the institute of the first preset vol is provided in container 30
Microballoon dispersion is stated, then the pressure in control container 30 is preset pressure, stands 0.5~4min, opens and is arranged in filter membrane
The valve 50 of 40 lower section of support plate, obtains the microballoon dispersion that the microballoon dispersion often flows out the second preset vol
Time parameter the closure parameter of the microballoon dispersion is obtained, wherein the change rate is got over according to the time parameter
Soon, then it characterizes microballoon and pore throat in reservoirs matching is poorer, the change rate is slower, then characterizes microballoon and got over pore throat in reservoirs matching degree
It is high.
Specifically, referring to Fig. 3, filter filter membrane support plate 40 can specifically be fixed by filter membrane clamper 42, filter membrane clamper
42 include upper-part 43 and lower component 44, and upper-part 43 and lower component 44 are fixed by helixseal, and filter membrane support plate 40 is fixed
In filter membrane clamper 40, and multiple through-holes are offered in filter membrane support plate 40, so that the microballoon for passing through nucleopore membranes 41
Dispersion is flowed downwardly by the multiple through-hole in conduit 20, and after the unlatching of valve 50, passes through the institute of nucleopore membranes 41
Stating microballoon dispersion can flow into measuring instrument 60, while start timing with calculator, if second preset vol is
3ml records a filtration time, records the time data of 30mL filter liquors when then obtaining often outflow 3mL solution；Pass through public affairs again
Formula 1 obtains its closure parameter and measures microballoon according to the closure parameter and pore throat in reservoirs matching degree is higher, wherein measuring instrument
Device 60 is specifically as follows graduated cylinder.
Specifically, examining or check micron order-polymer microballoon using nucleopore membranes evaluation microballoon and the method for pore throat in reservoirs matching
The matching of (grain size is at 10 μm or so) and submillimeter level-polymer microballoon (grain size is at 20 μm or so) and target reservoir pore throat.
According to casting body flake analysis, the experimental analysis of pressure mercury, rock core photo comparison, and combine experiment wellblock tracer monitoring knot
Fruit analysis obtains the layer hole throat diameter distribution of target reservoir at 1-150 μm, averagely at 10 μm or so；Target reservoir
Temperature be 55 DEG C.
Experiment 1:Examine or check the matching of micron order-polymer microballoon (10 μm or so of grain size) and target reservoir pore throat.
(1) micron order-polymer microballoon dispersion 300mL that mass concentration is 50mg/L is prepared, is placed in bottle
In conical flask, bottle stopper is covered, is put into 55 DEG C of insulating boxs, 10 days (d) is swollen.
(2) nucleopore membranes 41 that filter sizes are 0.4 μm are soaked with deionized water, is laid in filter membrane support plate 40, protected
Filter membrane surface cleaning is held, leakproof is compressed with cushion rubber, filter membrane clamper 42 is screwed, close valve 50；It is micro- after 30mL is swollen
Meter level-polymer microballoon dispersion solution pours into container 30, screws head cover 31；Head cover 31 connects pressue device 10 by conduit 20,
Then it is, for example, 0.05MPa to be forced into preset pressure, stands 1min or so, after determining device is without gas leakage, opens valve 50；Simultaneously
Start timing with stopwatch, often flow out 2.5mL solution, record a filtration time, records the time data of 25mL filter liquors.
One group of experiment terminates, and replaces other aperture nucleopore membranes and is tested, respectively 1.2 μm, 5.0 μm, 7.0 μm of aperture cores
Pore membrane, and repeat the above experimental procedure, record filtering time.
(3) it maps to the experimental data recorded, abscissa is filtration time, and unit min, ordinate is filtration volume,
Unit/mL is illustrated in fig. 4 shown below：Fig. 4 is for micron order-microballoon dispersion by the filtration volume of different pore size nucleopore membranes with filtering
Time rate of change curve；Wherein, the filtration volume for the nucleopore membranes that the expression of curve 400 aperture is 7.0um is with filtration time change rate
Curve；The filtration volume for the nucleopore membranes that the expression of curve 401 aperture is 0.4um is with filtration time change rate curve；Curve 402 indicates
Aperture is the filtration volume of the nucleopore membranes of 1.2um with filtration time change rate curve；Curve 403 indicates that aperture is the core of 5.0um
The filtration volume of pore membrane is with filtration time change rate curve；In this way, can with it can be seen from Fig. 4 that nucleopore membrane aperture at 0.4 μm -5.0 μm
When, increase with the aperture of nucleopore membranes 41, microballoon (is hereinafter referred to as become by the filtration volume of nucleopore membranes 41 with filtration time change rate
Rate) reduce, the plugging action of nucleopore membranes 41 is enhanced.And when the nucleopore membranes 41 that microballoon is 7.0 μm by aperture, variation
Rate obviously becomes faster, and weakens to the plugging action of nucleopore membranes 41.It is not that aperture is smaller or bigger, microballoon is to nucleopore membranes 41
Plugging action is stronger, when only the grain size of microballoon and the pore size of nucleopore membranes 41 match, envelope of the microballoon to nucleopore membranes 41
Stifled effect is just most strong.From thinking above：Micron order-polymer microballoon matches pass with the nucleopore membranes 41 that aperture is 5 μm or so
It is best, and target reservoir pore throat average-size is at 10 μm or so, therefore micron order-polymer microballoon and target reservoir pore throat
It is poor with relationship.
Experiment 2：Examine or check the matching of submillimeter level-polymer microballoon (20 μm or so of grain size) and target reservoir pore throat.
(1) compound concentration is submillimeter level-polymer microballoon dispersion 300mL of 50mg/L, is placed in conical flask, is covered
Good bottle stopper is put into 55 DEG C of insulating boxs, is swollen 10d.
(2) it is that 0.4 μm of nucleopore membranes 41 is soaked with deionized water by filter sizes, is laid in filter membrane support plate 40, keeps
Filter membrane surface cleans, and compresses leakproof with cushion rubber, filter membrane clamper 42 is screwed, close valve 50；Sub- milli after 30mL is swollen
Meter level-polymer microballoon dispersion solution pours into container 30, screws head cover 31；Head cover 31 connects nitrogen pressue device by conduit 20
10, it is, for example, 0.05MPa to be forced into preset pressure, stands 1min or so, after determining without gas leakage, opens valve 50；Use the second simultaneously
Table starts timing, often flows out 2.5mL solution, records a filtration time, records the time data of 25mL filter liquors.
One group of experiment terminates, and replaces other aperture nucleopore membranes and is tested, respectively 5.0 μm, 10.0 μm of aperture nucleopore membranes,
Repeat the above experiment step, record filtering time.
(3) it maps to the experimental data recorded, abscissa is filtration time, and unit min, ordinate is filtration volume,
Unit/mL, as shown in figure 5, Fig. 5 is filtration volume of the submillimeter level-polymer microballoon dispersion by different pore size nucleopore membranes
With filtration time change rate curve, wherein the filtration volume for the nucleopore membranes that the expression of curve 500 aperture is 0.4um is with filtration time
Change rate curve；The filtration volume for the nucleopore membranes that the expression of curve 501 aperture is 5.0um is with filtration time change rate curve；Curve
The filtration volume for the nucleopore membranes that 502 expression apertures are 10um is with filtration time change rate curve；In this way, can be with it can be seen from Fig. 5 that sub-
When grade-polymer microballoon is by the nucleopore membranes 41 of different pore size, filtration volume (hereinafter referred to as becomes with filtration time change rate
Rate) there are notable differences.When microballoon is by 0.4 μm of aperture and 5.0 μm of nucleopore membranes 41, change rate quickly, the microballoon of 25mL
Dispersion, less than 5min, fails to play plugging action to the pore throat in nucleopore membranes 41 by the filtration time of nucleopore membranes 41.And
When the nucleopore membranes 41 that microballoon is 10 μm by aperture, change rate is again apparent slack-off, and the microballoon dispersion of 25mL passes through core
The filtration time of pore membrane 41 reaches 80min, can form effective closure to 10 μm of aperture nucleopore membranes 41.Think：Submillimeter
41 matching relationship of nucleopore membranes in 10 μm of grade-polymer microballoon and aperture is best, and target reservoir pore throat average-size is also at 10 μm
Left and right, therefore submillimeter level-polymer microballoon has certain matching with target reservoir pore throat.
By one embodiment or multiple embodiments, the invention has the advantages that advantage：
Due to the measurement method of a kind of microballoon and pore throat in reservoirs matching in the embodiment of the present application, nucleopore membranes setting is existed
In filter membrane support plate, the support plate is arranged in the lower part of container；And the microballoon dispersion from one preset quality concentration of preparation
The microballoon dispersion setting of the first preset vol is taken out in system in a reservoir；It is default to control the pressure in the container
Pressure stands 0.5~4min, opens and valve in the container lower end is arranged, and obtains the microballoon dispersion and often flows out the
The time parameter of the microballoon dispersion of two preset vols obtains the microballoon dispersion according to the time parameter
Closure parameter can accurately measure microballoon class profile control agent in this way, according to the closure parameter and be matched with pore throat in reservoirs
Property, and then realize efficient conformance control, improve injection water application efficiency.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will make for those skilled in the art it will be apparent that as defined herein one
As principle can in other embodiments be realized in the case where not departing from the spirit or scope of invention.Therefore, the present invention will not
Meeting be limited and the embodiments shown herein, and is to fit to consistent with principles disclosed herein and novel features
Widest range.
Claims (5)
1. the measurement method of a kind of microballoon and pore throat in reservoirs matching, which is characterized in that including:
Prepare the microballoon dispersion of a preset quality concentration；
Nucleopore membranes are arranged in filter membrane support plate, the nucleopore membranes are soaked with deionized water, the support plate setting is being held
The lower part of device；
The microballoon dispersion setting of the first preset vol will be taken out in the microballoon dispersion of preparation in a reservoir；
Nitrogen cylinder is connected in the other end for the conduit being connect with the upper end of the container, pressure control is provided on the conduit
Device is depressurized when being more than the preset pressure for pressure in the above-described container, pressure measurement is provided on the conduit
Instrument, for measuring the pressure in the conduit in real time；It is controlled in the container by controlling the pressurization valve of the nitrogen cylinder
Pressure be the preset pressure, the pressurization valve is arranged on the conduit between the container and the nitrogen cylinder；It stands
0.5~4min opens the valve being arranged in the container lower end, obtains the microballoon dispersion and often flow out the second preset vol
The time parameter of the microballoon dispersion closure parameter of the microballoon dispersion is obtained according to the time parameter.
2. measurement method as described in claim 1, which is characterized in that it is described that nucleopore membranes are arranged when in filter membrane support plate,
The method further includes：
Filter membrane clamper is provided with below the container, the filter membrane support plate is arranged in the filter membrane clamper.
3. measurement method as described in claim 1, which is characterized in that it is described according to the time parameter, obtain the microballoon
The closure parameter of dispersion, specifically includes：
According to the time parameter, the filtration volume of the microballoon dispersion is obtained with the change rate of filtration time；
According to the correspondence of the change rate and closure parameter, the closure parameter of the microballoon dispersion is obtained.
4. measurement method as described in claim 1, which is characterized in that pressurization valve setting the pressure controller it
Before.
5. measurement method as claimed in claim 4, which is characterized in that the pressure controller is arranged in the pressure-measuring device
Before.
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| CN106932312B (en) * | 2017-02-22 | 2019-04-16 | 中国石油大学(北京) | Microballoon state dynamic classification characterizing method and device in porous media |
| CN107748124B (en) * | 2017-02-27 | 2019-10-01 | 西南石油大学 | A method of establishing dispersion agent grain diameter and pore size of rock matching relationship |
| CN106932313B (en) * | 2017-04-24 | 2019-06-14 | 东北石油大学 | A kind of polymer microballoon oil reservoir conformability evaluation method |
| CN107764700B (en) * | 2017-09-22 | 2020-05-19 | 浙江海洋大学 | Testing device and method suitable for multistage percolation of polymer microsphere solution |
| CN109915115B (en) * | 2019-04-02 | 2022-06-14 | 中国石油大学(华东) | Method and device for determining plugging matching relationship between elastic particles and stratum pore throats |
| CN110553971A (en) * | 2019-09-24 | 2019-12-10 | 中国海洋石油集团有限公司 | Method for measuring microsphere plugging performance |
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