CN106526084A - Foam property measuring device and method for oil extraction - Google Patents
Foam property measuring device and method for oil extraction Download PDFInfo
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- CN106526084A CN106526084A CN201610992273.8A CN201610992273A CN106526084A CN 106526084 A CN106526084 A CN 106526084A CN 201610992273 A CN201610992273 A CN 201610992273A CN 106526084 A CN106526084 A CN 106526084A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Abstract
The invention provides a foam property measuring device for oil extraction. The device comprises a shaft simulation system for simulating movement of foam in a shaft, a foam injection system for injecting the foam into the shaft simulation system, and a foam measuring system for measuring the foam properties. The shaft simulation system comprises a vertical pipeline, a porous medium and a heating sleeve, multiple measuring points are arranged on the vertical pipeline at intervals, each measuring point is connected to a foam measuring container of the foam measuring system through a porous medium container, and the heating sleeve is arranged outside the foam measuring container. By means of the device, the foam is injected into different oil layers in a simulated mode through the shaft simulation system, and the temperature difference between the oil layers is simulated through the heating sleeve; the foam measuring system measures the properties of the foam for simulating different temperatures and different oil layer conditions and foam shunt volumes, liquid shunt volumes and gas shunt volumes corresponding to all the simulated oil layers; a computer is adopted for automatically controlling the device, the experimental process is safe and reliable, and the labor cost is reduced.
Description
Technical field
The invention belongs to petroleum works and Technology field, and in particular to a kind of oil recovery with foaming properties determine device and
Method, the device can simulate foaming properties during foam injection underground purpose oil reservoir, and measurement foam is in different layers position, temperature
And/or the stability and shunt volume under the conditions of interstitial medium.
Background technology
The each elephant of China has been in the water drive later stage, but has petroleum-in-places more than half to remain on underground.
Need to carry out effective tertiary oil recovery technology, China's oil yield can be made to increase 10%-20%.Chemical flooding technology is at three times
It is most widely used most ripe in oil recovery, wherein foam flooding have profile control and the displacement of reservoir oil effect main reason is that foam in porous
Seepage characteristic in medium, i.e. foam are stifled very much not to block up the effect that little and water blockoff does not block up oil, causes foam equal in high and low permeable formation
Even propulsion.Recovery ratio more than 30% can be improved in general after water drive, after poly- drive, recovery ratio 10～20%, foam can be improved
If appropriate for carrying out using needs assessment foaming properties at oil recovery scene.
Nowadays, in most of report with regard to the quantitative determination of foaming agent system foaming properties, only determine the foaming of foam
Property and foam stability, and performance of the correspondence foam when purpose oil reservoir is injected does not have the report of related assays method.
The content of the invention
The invention aims to solve the above problems, there is provided a kind of oil recovery spumescence suitable for laboratory environment
Device can be determined.
The above-mentioned purpose of the present invention is realized by technical scheme below：
A kind of oil recovery determines device with foaming properties, including for simulating the pit shaft simulation that foam is moved in the wellbore is
System, the foam injection systems that foam is injected to pit shaft analog systemss and the brbble test system for determining foaming properties, its
In：
The pit shaft analog systemss include vertical pipeline (5), porous media container and heating mantle, the top of vertical pipeline (5)
Portion is provided with the pipeline opening (42) of opening, and its bottom sets Packed pipeline bottom (46), is arranged at intervals with multiple on vertical pipeline (5)
Measurement point；Each measurement point measures container by the foam that two parallel pipeline passages are connected to brbble test system, one of them
A porous media container is provided with pipeline passway for simulating the rock of the different permeabilities of different oil reservoirs in actual oil reservoir；
Heating is set on the foam measurement external container of brbble test system, for simulating the temperature of different oil reservoirs in actual oil reservoir.
Above-mentioned oil recovery foaming properties are determined in device, filled with difference in the porous media container of each measurement point connection
The natural core of permeability, artificial core or other porous medias.
Above-mentioned oil recovery foaming properties are determined in device, and the heating outside the corresponding foam measurement container of each measurement point is arranged
Different heating-up temperatures are set to, temperature range is 0～200 DEG C.
Above-mentioned oil recovery foaming properties are determined in device, and the foam injection systems include that gas container (1), foaming agent hold
Device (2) and foam maker (12), gas container (1) and foaming agent container (2) bottom respectively with the first constant speed pump (3),
Second constant speed pump (4) to be connected and enter foam maker generation foam with constant speed for making gas and foaming agent；Gas holds
The top of device (1) and foaming agent container (2) is connected to the arrival end of foam maker (12), foam maker respectively by pipeline
(12) the port of export is connected to the pipeline opening (42) of the vertical pipeline (5).
Above-mentioned oil recovery foaming properties are determined in device, top and the foam maker (12) of the gas container (1)
Valve (31) and check valve (47) are provided with pipeline passway between arrival end, top and the foam of the agent container (2) that foams are sent out
Valve (32) and check valve (48) are provided with pipeline passway between the arrival end of raw device (12).
Above-mentioned oil recovery foaming properties are determined in device, and the brbble test system includes that multiple supporting foam measurements are held
Device, video camera and the electrode being arranged in foam measurement container, foam measurement container is opening U-shaped structure in the horizontal direction
Container, its opening are equipped with visual window, and the side that visual window is located is provided with a video camera, along height side in foam measurement container
To multiple electrodes are arranged at intervals with, the top of foam measurement container is connected with a pressure transducer for measuring foam measurement container
Interior pressure value.
Above-mentioned oil recovery foaming properties determine device also includes a calorstat (49) for accommodating aforementioned oil recovery spumescence
Device can be determined, the heated perimeter of the calorstat (49) is 0～60 DEG C.
Above-mentioned oil recovery foaming properties determine device also includes a computer (50), and the computer (50) is positioned at calorstat
(49), outside, first constant speed pump, the second constant speed pump, video camera, electrode, heating mantle, pressure transducer and calorstat are equal
It is electrically connected to computer (50).
The present invention is also provided a kind of oil recovery and uses foaming properties assay method, the method to be surveyed with foaming properties using above-mentioned oil recovery
Device is determined to the foam of different measuring point position not by the foaming properties under porous media Containers situation and different measuring point position
The foam put is measured respectively by the foaming properties under porous media container situation, is comprised the following steps：
Step one：Need to set the temperature of heating mantle according to experiment；Filled natural rock core or people inside porous media container
The lithogenesis heart, setting gas, foaming agent injection rate, Open valve (31～35)；
Step 2：Open and control the first constant speed pump (3) valve (31), check valve (47) are passed the gas through into foam
Raw device (12), while opening and controlling the second constant speed pump (4) makes foaming agent send out into foam by valve (32), check valve (48)
Raw device (12)；Gas and foaming agent liquid are mixed to form foam in foam maker (12), and foam is entered by pipeline opening (42)
Enter vertical pipeline (5)；
Step 3：Foam is measured into the first foam by valve (33) in first measurement point (43) of vertical pipeline (5)
Container (6), foam measure container (7) into the second foam by valve (34) in second measurement point (44) of vertical pipeline (5),
Foam measures container (8) into the 3rd foam by valve (35) in the 3rd measurement point (45) of vertical pipeline (5)；Steep when three
Foam in any one in foam measurement container reaches 2/3～3/4 corresponding foam with foaming agent solution volume and measures container volume
When, stop the first constant speed pump (3) and the second constant speed pump (4), close valve (33～35)；
Step 4：By controlling the foam in each foam measurement container of video camera shooting, obtain the foam and measure container
In foam volume Vf of foam, tri- parameters of foams drain amount Vfl and foam stability Sf, the bubble is obtained by counter electrode
Conductivity Df of correspondence position foam in foam measurement container, the foam for obtaining different measuring point position do not pass through porous media Containers
Foaming properties under situation；After measurement terminates, Open valve (39～41) discharges foam and foaming agent waste liquid, is then shut off valve
(39～41)；
Step 5：Open valve (36～38), opens and controls the first constant speed pump (3) and the second constant speed pump (4), and foam exists
First measurement point (43) of vertical pipeline (5) is measured into the first foam by valve (36) and the first porous media container (13)
Container (6), foam are entered by valve (37) and the second porous media container (14) in second measurement point (44) of vertical pipeline (5)
Enter the second foam measurement container (7), foam vertical pipeline (5) the 3rd measurement point (45) by valve (38) and the 3rd porous
Media Containers (15) are into the 3rd foam measurement container (8)；When the foam in any one in three foams measurement container with send out
When infusion liquor capacity reaches 2/3～3/4 correspondence foam measurement container volume, stop the first constant speed pump (3) and the second constant speed pump
(4), close valve (36～38)；
Step 6：Execution step four, obtain the foam of different measuring point position by under porous media container situation again
Foaming properties；
Step 7：Stop measurement, and close heating mantle (22～24).
Above-mentioned oil recovery uses calorstat and computer with foaming properties assay method, by computer realize to constant speed pump,
The control of video camera, electrode, heating mantle, pressure transducer and calorstat.
Using above-mentioned technical proposal, the solution have the advantages that：Apparatus of the present invention are realized by pit shaft analog systemss
Foam simulated injection difference oil reservoir, is capable of achieving the temperature contrast between different simulation oil reservoirs by heating mantle；Brbble test system
The foaming properties under simulation different temperatures, different reservoir conditions and the corresponding foam shunting of each simulation oil reservoir can be determined
Amount, separating liquid amount and gas shunt volume；Using computer to device from motion tracking, control, make whole experiment process safely may be used
Lean on, save labour turnover.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
In figure, reference is expressed as：
1：Gas container, 2：Foaming agent container, 3：First constant speed pump, 4：Second constant speed pump, 5：Vertical pipeline, 6：First bubble
Foam measurement container, 7：Second foam measurement container, 8：3rd foam measurement container, 9：First video camera, 10：Second video camera,
11：3rd video camera, 12：Foam maker, 13：First porous media container, 14：Second porous media container, 15：More than 3rd
Hole media Containers, 16～18：Pressure transducer, 19～21：Visual window, 22：First heating mantle, 23：Second heating mantle, 24：The
Three heating mantles, 25～30：Electrode, 31～41：Valve, 42：Pipeline opening, 43：First measurement point, 44：Second measurement point, 45：The
Three measurement points, 46：Pipeline bottom, 47,48：Check valve, 49：Calorstat, 50：Computer.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the oil recovery to the present invention is carried out with foaming properties measure device and method in detail
Describe in detail bright.
Oil recovery determines device with foaming properties
As shown in figure 1, the oil recovery foaming properties for the present invention determine the embodiment of device, the device is that one kind is applied to
The foaming properties of laboratory environment determine device (thick line represents that physical pipeline connects, and fine rule represents electrical connection), including for mould
Intend foam move in the wellbore pit shaft analog systemss, to pit shaft analog systemss inject foam foam injection systems and be used for
The brbble test system of foaming properties is determined, wherein：
Pit shaft analog systemss in the present embodiment include vertical pipeline 5, porous media container and heating mantle, vertical pipeline 5
Top be provided with the pipeline opening 42 of opening, its bottom sets Packed pipeline bottom 46, and vertical pipeline 5 is in the portion near pipeline bottom 46
Bit interval be provided with multiple measurement points (Fig. 1 by taking three measurement points as an example, respectively the first measurement point 43,44 and of the second measurement point
3rd measurement point is 45)；Each measurement point is held by multiple foam measurements that two parallel pipeline passages are connected to brbble test system
One in device, is provided with a porous media container on one of pipeline passway, in the embodiment shown in fig. 1, three surveys
Amount point corresponds respectively to three porous media containers, i.e. the first measurement point 43 and corresponds to the first porous media container 13, and second surveys
Amount point 44 corresponds to the second porous media container 14, and the 3rd measurement point 45 corresponds to the 3rd porous media container 15, and more than three
The rock for simulating the different permeabilities of different oil reservoirs in actual oil reservoir in parallel of hole media Containers 13～15；Heating is set on
The foam measurement external container of brbble test system, i.e. the first measurement point 43 correspond to the first heating mantle 22, the second measurement point 44
Corresponding to the second heating mantle 23, the 3rd measurement point 45 corresponds to the 3rd heating mantle 24, and three heating mantles are respectively used to simulation reality
The temperature of different oil reservoirs in oil reservoir.
In pit shaft analog systemss in above-described embodiment, the implant inside three porous media containers can be natural rock
The heart, artificial core or other porous medias, for simulating the rock of the different permeabilities of different oil reservoirs in actual oil reservoir, implant
Species and permeability can determine according to the actual requirements, and the implant in three porous media containers can with it is identical can also
Difference, determines according to the actual requirements；Three heating mantles individually can be heated to its corresponding foam measurement container, its heating temperature
Degree scope is 0～200 DEG C；Three foams measure pressure more than the 20MPa of container.
Foam injection systems in the present embodiment include gas container 1, foaming agent container 2 and foam maker 12, gas
The bottom of body container 1 and foaming agent container 2 is connected with the first constant speed pump 3, the second constant speed pump 4 respectively, for making gas and sending out
Infusion enters foam maker with constant speed and produces the top of foam, gas container 1 and foaming agent container 2 respectively by valve
31st, check valve 47 and valve 32, check valve 48 are connected to the arrival end of foam maker 12, and the port of export of foam maker 12 connects
It is connected to the pipeline opening 42 of vertical pipeline 5.
Brbble test system in the present embodiment include above three foam measurement container (i.e. the first foam measurement container 6,
Second foam measure container 7 and the 3rd foam measurement container 8), and the matching used video camera of foam measurement container (i.e. first takes the photograph
Camera 9, the second video camera 10 and the 3rd video camera 11) and be arranged on foam measurement container in electrode 25～30, foam survey
Amount container is opening U-shaped structure container in the horizontal direction, and its opening is equipped with visual window, each survey on vertical pipeline 5
Amount point is connected to one of foam measurement container, wherein, the first measurement point 43 passes through valve 36 and the first porous media container
The parallel pipeline passage that the pipeline passway that 13 pipeline passways being located and valve 33 are located is formed is connected to the measurement of the first foam
6 left surface bottom inlet of container；The right flank outlet at bottom of the first foam measurement container 6 is connected with valve 39, for discarding
Foam or liquid discharge；The opening of the first foam measurement container 6 is equipped with visual window 19, and the side that visual window 19 is located is provided with
First video camera 9, for observing the foam state in the first foam measurement container 6；The outside of the first foam measurement container 6 is provided with
First heating mantle 22, for arranging the foam temperature in the first foam measurement container 6；In first foam measurement container 6, (U-shaped is tied
Structure bottom) electrode 25 and electrode 26 are arranged at intervals with along short transverse, for measuring the conductivity of foam；The measurement of first foam is held
The top of device 6 is connected with a pressure transducer 16, for measuring the pressure value in the first foam measurement container 6.
Second measurement point 44 of vertical pipeline 5 and the 3rd measurement point 45 are steeped with the second foam measurement container 7 and the 3rd respectively
Foam measurement container 8 be connected, attachment structure is identical, and the second foam measurement container 7 and the 3rd foam measurement container 8 structure and
Arrangement is also identical, specifically refers to Fig. 1, repeats no more here.
In addition, the measurement point position of vertical pipeline 5 can be adjusted according to practical situation, the quantity of measurement point is not limited to
Three, can increase or decrease according to actual needs, the foam measurement container being attached thereto and its appurtenances also increase accordingly
Subtract.The position of the electrode in foam measurement container and quantity are also not necessarily limited to the embodiment shown in Fig. 1, and the position of electrode and quantity can
Adjust according to actual needs.
Each part forms the oil recovery foaming properties measurement apparatus of the present invention according to above-mentioned annexation above, in the device
The equal acid-alkali-corrosive-resisting of the pipeline of each part and connecting components of gas medium and/or liquid medium is touched, and resistance to is pressed in
More than 20MPa；Preferably, the volume of gas container 1 can be set to 2000mL, and the volume of the agent container 2 that foams can be set to 1000mL, steep
The volume of foam measurement container 6～8 can be set to 200mL.
Apparatus of the present invention also include a calorstat 49, and aforementioned apparatus of the present invention are placed in a calorstat 49, it is ensured that experiment
During temperature constant, improve experiment accuracy, wherein, the heated perimeter of calorstat 49 is 0～60 DEG C.
Apparatus of the present invention also include a computer 50, and computer 50 is located at outside calorstat 49, the first constant speed pump 3 and second
Constant speed pump 4, video camera, electrode, heating mantle, pressure transducer and calorstat are each coupled electrically to computer 50, by computer 50
The measurement data of each part is gathered, corresponding parameter is set and is controlled the execution of each part.
Foaming properties assay method is used in oil recovery
Above-mentioned foaming properties determine device and can measure the foaming properties of 5 different measuring point position of vertical pipeline and each survey
Measure foam shunt volume, separating liquid amount and the gas shunt volume of point.Illustrate by taking the embodiment shown in Fig. 1 as an example below, this
In the foaming properties that determine mainly include：Foam volume Vf (being obtained by the measurement of video camera 9～11), foam stability Sf (foam
Time used by volume damper to half be foam stability), foams drain amount Vfl (by video camera 9～11 measurement obtain)；It is perpendicular
The foam shunt volume Jf, Jf=Vf of 5 different measuring point position of straight pipeline；The foaming agent liquid of 5 different measuring point position of vertical pipeline
Body shunt volume Jl, Jl=Vfl+DlfVf/Df, in formula, Df is foam conductive rate (being obtained by the measurement of electrode 25～30), and Dlf sends out
Infusion liquid conduction rate (parameter of measured in advance)；Gas distribution amount Jg of 5 different measuring point position of vertical pipeline, Jg=Jf-
Jl。
Foaming properties determine device and can also measure bubble of the foam of 5 different measuring point position of vertical pipeline after rock core
The foam shunt volume of foam performance and each measurement point, separating liquid amount and gas shunt volume；5 different measuring point of vertical pipeline connects
Porous media rock core in the porous media container for connecing can with the porous media material of identical permeability or different permeability come
Simulation.
Foaming properties determination experiment can be carried out using said apparatus, specific oil recovery foaming properties assay method includes
Following steps (are illustrated by taking the embodiment shown in Fig. 1 as an example)：
Step one：Need to set the temperature of three heating mantles 22～24 according to experiment；Three porous media containers 13～15
Internal filled natural rock core or artificial core, setting gas, foaming agent injection rate, Open valve 31～35.
Step 2：Open and control the first constant speed pump 3 and pass the gas through valve 31, check valve 47 to enter foam maker
12, at the same open and control the second constant speed pump 4 make foaming agent by valve 32, check valve 48 enter foam maker 12；Gas
Foam is mixed to form in foam maker 12 with foaming agent liquid, foam enters vertical pipeline 5 by pipeline opening 42.
Step 3：Foam enters first foam by valve 33 in the first measurement point 43 of vertical pipeline 5 and measures container 6,
Foam enters second foam by valve 34 in the second measurement point 44 of vertical pipeline 5 and measures container 7, and foam is in vertical pipeline 5
The 3rd measurement point 45 the 3rd foam entered by valve 35 measure container 8；When arbitrary in three foam measurement containers 6～8
When foam in individual reaches 2/3～3/4 corresponding foam measurement container volume with foaming agent solution volume, stop the first constant speed pump 3
With the second constant speed pump 4, valve 33～35 is closed.
Step 4：The foam that the first video camera 9 is shot in the first foam measurement container 6 is controlled, foam volume Vf, bubble is obtained
Tri- parameters of foam lifting rate Vfl and foam stability Sf, obtain the first foam by electrode 25,26 and measure correspondence position in container 6
Put conductivity Df of foam；Second video camera 10 shoots the foam in the second foam measurement container 7, obtains foam volume Vf, bubble
Tri- parameters of foam lifting rate Vfl and foam stability Sf, obtain the second foam by electrode 27,28 and measure correspondence position in container 7
Put conductivity Df of foam；3rd video camera 11 shoots the foam in the 3rd foam measurement container 8, obtains foam volume Vf, bubble
Tri- parameters of foam lifting rate Vfl and foam stability Sf, obtain the 3rd foam by electrode 29,30 and measure correspondence position in container 8
Conductivity Df of foam is put, so as to the foam for obtaining different measuring point position does not pass through the porous media Containers (porous simulated
Rock core) under situation when foaming properties；After measurement terminates, Open valve 39～41 discharges foam and foaming agent waste liquid, is then shut off
Valve 39～41.
Porous media material in porous media container is used for simulating the oil reservoir with different permeabilities, is sent out using above-mentioned
Bright device can also continue to measure the foam of different measuring point position and pass through porous media container (Porous Core simulated) situation
Foaming properties when lower, proceed following steps：
Step 5：Open valve 36～38, opens and controls the first constant speed pump 3 and the second constant speed pump 4, and foam is in VERTICAL TUBE
First measurement point 43 in road 5 passes through valve 36 and the first porous media container 13 enters the first foam and measures container 6, and foam is perpendicular
Second measurement point 44 of straight pipeline 5 passes through valve 37 and the second porous media container 14 enters the second foam and measures container 7, foam
Pass through valve 38 in the 3rd measurement point 45 of vertical pipeline 5 and the 3rd porous media container 15 enters the 3rd foam and measures container 8；
When the foam in any one in three foam measurement containers 6～8 reaches 2/3～3/4 corresponding foam with foaming agent solution volume
During measurement container volume, stop the first constant speed pump 3 and the second constant speed pump 4, close valve 36～38.
Step 6：Execution step four again.
Step 7：Stop measurement, and close heating mantle.
Calorstat 49 and computer 50 can also be used in above-mentioned oil recovery foaming properties assay method, by computer 50
Realize the control to constant speed pump, video camera, electrode, heating mantle, pressure transducer and calorstat.
In addition, if experiment also has other particular/special requirements, injection flow process can be adjusted, to meet experiment according to practical situation
Require.
Experimental verification
As actual oilbearing stratum is layered distribution, the parameter such as per layer of temperature, permeability has difference, in order to simulate
Actual oil reservoir situation, is arranged heating mantle and just can simulate different temperatures respectively, simulated using the porous media of different permeabilities
The rock of different oil reservoirs, for example, 49 temperature of calorstat is set to 45 DEG C, and the first heating mantle 22 and 23 temperature of the second heating mantle are set to 45
DEG C, 24 temperature of the 3rd heating mantle is 60 DEG C；The natural core of 600mD, the second porous are filled inside first porous media container 13
The natural core of 1200mD is filled inside media Containers 14, the natural rock of 1200mD inside the 3rd porous media container 15, is filled
The heart, for comparing the foaming properties after different temperatures, the porous media rock core of permeability.Gas is nitrogen, foaming agent group
(molecular weight is 16,600,000, and degree of hydrolysis is to become sulfobetaines silicon surface active agent 0.5wt%, partially hydrolyzed polyacrylamide (PHPA)
23%) 0.08wt%, balance of water, gas injection rate be 20mL/min, foaming agent injection rate 10mL/min, when three steep
When foam volume in any one of foam measurement container reaches 3/4 correspondence foam measurement container volume, stop injection gas and send out
Infusion.The pit shaft internal pressure of the experiment is set to 10MPa.
The foaming properties parameter of three measurement point positions of 1 vertical pipeline 5 of table
Foam parameters of the foam of three 43～45 positions of measurement point of 2 vertical pipeline 5 of table after rock core
As known from Table 1, foam is different in the foaming properties of vertical pipeline diverse location, 43 foam of the first measurement point of highest
Gas content is maximum, and content liquid is minimum, and foam stability is poor；The foam stability of the second middle measurement point 44 is best,
Air content and liquid content are in optimum state；Minimum 45 foam gas content of the 3rd measurement point is minimum, and content liquid is maximum, bubble
Foam stability is worst.As shown in Table 2, after porous media rock core, 43 foam gas content of the first measurement point reduces foam, liquid
Body content is minimum, and foam stability is poor；Preferably, gas content is maximum for the foam stability of the second measurement point 44；3rd measurement
The foam gas content of point 45 is minimum, and content liquid is maximum, and foam stability is worst.Different measuring point position in vertical pipeline 5
Foaming properties of the foam after rock core it is significantly different with the foaming properties without rock core, in different measuring point and without
The foam gas shunt volume and separating liquid amount difference of rock core is less than the foam gas shunt volume and separating liquid amount through rock core
Difference.
Above-mentioned measurement and analysis result understand, foam diverse location in the wellbore, foaming properties are different, so as to find out foam
Different into the foaming properties in the difference oil reservoir of underground, the device can be with analogue measurement foam when into underground difference oil reservoir
Foaming properties, are that the blowing agent system formula development suitable for recovering the oil and optimization provide technical support.
It will be appreciated by those skilled in the art that these embodiments or embodiment are merely to illustrate the present invention and do not limit this
The scope of invention, the various equivalent variations and modification made to the present invention belong to the disclosure of invention.
Claims (10)
1. a kind of oil recovery determines device with foaming properties, it is characterised in that include for simulating the well that foam is moved in the wellbore
Cylinder analog systemss, the foam injection systems that foam is injected to pit shaft analog systemss and the brbble test for determining foaming properties
System, wherein：
The pit shaft analog systemss include vertical pipeline (5), porous media container and heating mantle, and vertical pipeline is set at the top of (5)
There is the pipeline opening (42) of opening, its bottom sets Packed pipeline bottom (46), and vertical pipeline is arranged at intervals with multiple measurements on (5)
Point；Each measurement point measures container, one of pipeline by the foam that two parallel pipeline passages are connected to brbble test system
A porous media container is provided with passage for simulating the rock of the different permeabilities of different oil reservoirs in actual oil reservoir；Heating
The foam measurement external container of brbble test system is set on, for simulating the temperature of different oil reservoirs in actual oil reservoir.
2. oil recovery according to claim 1 determines device with foaming properties, it is characterised in that it is many that each measurement point connects
Natural core, artificial core or other porous medias filled with different permeabilities in the media Containers of hole.
3. oil recovery according to claim 1 and 2 determines device with foaming properties, it is characterised in that each measurement point correspondence
Foam measurement container outside heating mantle be set to different heating-up temperatures, temperature range is 0～200 DEG C.
4. the oil recovery according to any one of claims 1 to 3 determines device with foaming properties, it is characterised in that the foam
Injected system includes that gas container (1), foaming agent container (2) and foam maker (12), gas container (1) and foaming agent hold
The bottom of device (2) is connected for making gas and foaming agent with constant speed with the first constant speed pump (3), the second constant speed pump (4) respectively
Degree produces foam into foam maker；The top of gas container (1) and foaming agent container (2) is connected to bubble by pipeline respectively
The arrival end of foam generator (12), the port of export of foam maker (12) are connected to the pipeline opening (42) of the vertical pipeline (5).
5. oil recovery according to claim 4 determines device with foaming properties, it is characterised in that the gas container (1)
Valve (31) and check valve (47), foaming agent are provided with pipeline passway between top and the arrival end of foam maker (12)
Valve (32) and check valve are provided with pipeline passway between the top of container (2) and the arrival end of foam maker (12)
(48)。
6. the oil recovery according to any one of claim 1 to 5 determines device with foaming properties, it is characterised in that the foam
Measurement system includes multiple supporting foam measurement container, video cameras and the electrode being arranged in foam measurement container, foam
Measurement container is opening U-shaped structure container in the horizontal direction, and its opening is equipped with visual window, and the side that visual window is located is provided with
One video camera, is arranged at intervals with multiple electrodes, the top connection of foam measurement container along short transverse in foam measurement container
There is a pressure transducer for measuring the pressure value in foam measurement container.
7. the oil recovery according to any one of claim 1 to 6 determines device with foaming properties, it is characterised in that also including one
Calorstat (49) determines device for accommodating aforementioned oil recovery foaming properties, and the heated perimeter of the calorstat (49) is 0～60
℃。
8. oil recovery according to claim 7 determines device with foaming properties, it is characterised in that also including a computer
(50), the computer (50) is outside calorstat (49), first constant speed pump, the second constant speed pump, video camera, electrode,
Heating mantle, pressure transducer and calorstat are each coupled electrically to computer (50).
9. a kind of oil recovery uses foaming properties assay method, and which adopts the oil recovery foaming properties described in any one of claim 1 to 8
Device is determined to the foam of different measuring point position not by the foaming properties and different measuring point under porous media Containers situation
The foam of position is measured respectively by the foaming properties under porous media container situation, is comprised the following steps：
Step one：Need to set the temperature of heating mantle according to experiment；Filled natural rock core or people's lithogenesis inside porous media container
The heart, setting gas, foaming agent injection rate, Open valve (31～35)；
Step 2：Open and control the first constant speed pump (3) and pass the gas through valve (31), check valve (47) to enter foam maker
(12), while opening and controlling the second constant speed pump (4) makes foaming agent enter foam maker by valve (32), check valve (48)
(12)；Gas and foaming agent liquid are mixed to form foam in foam maker (12), and foam enters perpendicular by pipeline opening (42)
Straight pipeline (5)；
Step 3：Foam measures container into the first foam by valve (33) in first measurement point (43) of vertical pipeline (5)
(6), foam measures container (7), foam into the second foam by valve (34) in second measurement point (44) of vertical pipeline (5)
Container (8) is measured into the 3rd foam by valve (35) in the 3rd measurement point (45) of vertical pipeline (5)；When three foams are surveyed
When foam in any one in amount container reaches 2/3～3/4 corresponding foam measurement container volume with foaming agent solution volume, stop
Only the first constant speed pump (3) and the second constant speed pump (4), close valve (33～35)；
Step 4：By controlling the foam in each foam measurement container of video camera shooting, obtain in foam measurement container
Foam volume Vf of foam, tri- parameters of foams drain amount Vfl and foam stability Sf, obtain the foam by counter electrode and survey
Conductivity Df of correspondence position foam in amount container, the foam for obtaining different measuring point position do not pass through porous media Containers situation
Under foaming properties；After measurement terminates, Open valve (39～41) discharges foam and foaming agent waste liquid, is then shut off valve (39
～41)；
Step 5：Open valve (36～38), opens and controls the first constant speed pump (3) and the second constant speed pump (4), and foam is vertical
First measurement point (43) of pipeline (5) measures container into the first foam by valve (36) and the first porous media container (13)
(6), foam enters by valve (37) and the second porous media container (14) in second measurement point (44) of vertical pipeline (5)
Two foams measurement container (7), foam vertical pipeline (5) the 3rd measurement point (45) by valve (38) and the 3rd porous media
Container (15) is into the 3rd foam measurement container (8)；When foam and foaming agent in any one in three foam measurement containers
When liquor capacity reaches 2/3～3/4 correspondence foam measurement container volume, stop the first constant speed pump (3) and the second constant speed pump (4),
Close valve (36～38)；
Step 6：Execution step four, obtain the foam of different measuring point position by the bubble under porous media container situation again
Foam performance；
Step 7：Stop measurement, and close heating mantle (22～24).
10. foaming properties assay method is used in oil recovery according to claim 9, it is characterised in that methods described uses constant temperature
Case and computer, realize the control to constant speed pump, video camera, electrode, heating mantle, pressure transducer and calorstat by computer
System.
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