CN206832693U - CO2Evaluation device for improving residual oil displacement effect by taking in and sending out emulsion - Google Patents
CO2Evaluation device for improving residual oil displacement effect by taking in and sending out emulsion Download PDFInfo
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- CN206832693U CN206832693U CN201720515966.8U CN201720515966U CN206832693U CN 206832693 U CN206832693 U CN 206832693U CN 201720515966 U CN201720515966 U CN 201720515966U CN 206832693 U CN206832693 U CN 206832693U
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- 239000000839 emulsion Substances 0.000 title claims abstract description 71
- 238000006073 displacement reaction Methods 0.000 title abstract description 12
- 230000000694 effects Effects 0.000 title abstract description 4
- 239000003921 oil Substances 0.000 claims abstract description 45
- 239000011435 rock Substances 0.000 claims abstract description 27
- 239000010779 crude oil Substances 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 239000004094 surface-active agent Substances 0.000 claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 210000004534 cecum Anatomy 0.000 claims description 33
- 239000003129 oil well Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000000243 solution Substances 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 229920005479 Lucite® Polymers 0.000 claims description 9
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000004088 simulation Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000011156 evaluation Methods 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000000638 stimulation Effects 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 61
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 5
- 238000004945 emulsification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000012190 activator Substances 0.000 description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010835 comparative analysis Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000004530 micro-emulsion Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model provides a CO2An evaluation device for improving the displacement effect of residual oil by stimulation of emulsion, the device comprising: the microcosmic rock core holder is internally provided with a microcosmic rock core model with a plurality of blind ends, the exterior of the microcosmic rock core holder is a heating insulation sleeve, the temperature is controlled through a temperature control box, the lower part of the microcosmic rock core holder is provided with a light source, the light source is used for providing light for a microcosmic camera on the upper part of the microcosmic rock core holder, a container can saturate crude oil and CO to the microcosmic rock core model through crude oil, and2CO in the intermediate vessel2CO is generated by the solution in the intermediate container and the surfactant under the action of an emulsion generator2And emulsion is injected into the microcosmic rock core model, the microcosmic rock core holder is used for holding the microcosmic rock core model, confining pressure of the microcosmic rock core is controlled outside the microcosmic rock core model through liquid pressure regulation, annular pressure fluid cavities are formed in the upper space and the lower space of the microcosmic rock core model respectively, formation pressure is simulated, and observation is carried out through a microcosmic camera.
Description
Technical field
Oil-Gas Field Development Engineering technology is the utility model is related to, applied to HTHP oil well cecum, more particularly to one kind
CO2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency.
Background technology
Carbon dioxide (CO2) there is very high solubility, CO in oil2After being dissolved in crude oil, can make crude oil volumetric expansion,
Viscosity declines, and can also reduce the interfacial tension and minimum miscibility pressure of two-phase.CO2Drive applied widely, recovery ratio and improve and show
CO can be solved simultaneously by writing2Seal problem up for safekeeping, be advantageous to environmental protection.Under the conditions of HTHP oil well, CO2It is typically in super face
(temperature and pressure is respectively at 31.1 DEG C and more than 7.38MPa), CO under boundary's state2Density is close to fluid density, now CO2- table
Face activator solution system belongs to emulsion category, conventional CO equivalent to liquid-liquid dispersion2The research of foam is typically limited to
Under normal temperature and pressure conditionses.
In Chinese document《The window of science and technology》2nd phase in 2011 (under) in《Spontaneous CO2Foam flooding desk research》In one text
Mention, by a large amount of laboratory tests, have studied temperature to spontaneous CO2The foam property of foam system influences, but not to CO2
Emulsion handle up improve HTHP oil well cecum residual oil Flooding Efficiency evaluated, also on accordingly it is microcosmic visual
Evaluating apparatus and method.In Chinese document《Petrochemical industry Journal of Chinese Universities》2013 volume 26 it is the 1st interim《Supercritical CO2
The minimum miscibility pressure of microemulsion and alkane is studied》Mentioned in one text, investigated alkane carbon number, temperature, water and surfactant
Influence of the molar fraction to overcritical microemulsion and the MMP of alkane.
But current rare research CO2Emulsion handle up improve HTHP oil well cecum residual oil Flooding Efficiency the problem of,
Also without evaluation CO2Emulsion handle up improve HTHP oil well cecum residual oil Flooding Efficiency method and apparatus, also without energy
Enough to CO under the conditions of microcosmic2Emulsion, which is handled up, improves the device that HTHP oil well cecum residual oil Flooding Efficiency is observed.
Utility model content
The utility model provides a kind of CO2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency, for CO2Breast
Liquid, which is handled up, improves HTHP oil well cecum residual oil Flooding Efficiency progress O＆A.
The utility model first aspect provides a kind of CO2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency, bag
Include：
Microcosmic core holding unit, hold the microcosmic rock core mould with multiple cecums in the microcosmic core holding unit inner clamps
Type, the microcosmic core holding unit outside is heating and thermal insulation set；The heating and thermal insulation set is connected with temperature-controlled box, passes through the temperature control
Case controls temperature；The microcosmic core holding unit bottom is provided with light source, and the microcosmic core holding unit top is provided with micro-
Mirror camera, the light source are used to provide light for microcosmic core holding unit top microimaging head；The microcosmic rock core clamping
Confined pressure injection device is connected with the outside of device；
The entrance point of microcosmic core model respectively with crude oil intermediate receptacle, surfactant intermediate receptacle and CO2It is middle
Container connects；Can be by crude oil intermediate receptacle to microcosmic core model saturation crude oil, the CO2CO in intermediate receptacle2With it is described
Solution in surfactant intermediate receptacle produces CO in the presence of emulsion generator2Emulsion, it is subsequently injected into the microcosmic rock
Heart model；The outlet of the microcosmic core model is connected with back-pressure valve and output liquor collecting device；
The microcosmic core holding unit is used to clamp the microcosmic core model, passes through liquid outside the microcosmic core model
The confined pressure of the microcosmic rock core of body Regulation Control, the upper space and lower space of microcosmic core model form ring pressure fluid cavity respectively,
Simulated formation pressure, and observed by the microimaging head.
In a kind of concrete implementation mode, the CO2It is sequentially connected between intermediate receptacle and the microcosmic core model
There are drying tube and flowmeter.
In a kind of concrete implementation mode, the entrance point of the microcosmic core model passes through in six-way valve and the crude oil
Between container, the surfactant intermediate receptacle and the CO2Intermediate receptacle connects.
In a kind of concrete implementation mode, the crude oil intermediate receptacle, the surfactant intermediate receptacle and described
CO2Piston is provided with intermediate receptacle, the constant-flux pump being connected with each intermediate receptacle can promote piston mobile so that holding
Fluid in device enters the microcosmic core model.
In a kind of concrete implementation mode, the other end and N of the back-pressure valve2Gas cylinder connects.
In a kind of concrete implementation mode, described microcosmic core model includes the square organic of two pieces of equal sizes
Sheet glass, the inner surface of each lucite piece are a groove for having cecum, have cecum between two lucite pieces
A pair of diagonal angles of groove include guide passage, and the both ends of guide passage are respectively entrance and exit.
In a kind of concrete implementation mode, described temperature-controlled box is by electrical heating and attemperator to microcosmic core model
Heated, and the experimental temperature under the conditions of being obtained by thermocouple residing for microcosmic core model.
In a kind of concrete implementation mode, the microimaging head is specifically used for CO2Emulsion handle up overall process progress
Real time image collection, and as image processing software, the image to obtained by is handled, and obtains CO2Emulsion, which is handled up, improves HTHP
Oil well cecum residual oil Flooding Efficiency.
In a kind of concrete implementation mode, the crude oil intermediate receptacle, the surfactant solution intermediate receptacle with
And the CO2Intermediate receptacle is connected with pressure gauge respectively.
CO provided by the utility model2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency, can be in HTHP
Under the conditions of pass through IMAQ method observe CO2Oil displacement efficiency and displacement of reservoir oil machine of the emulsion to raising HTHP oil well cecum residual oil
Reason, and intuitively can observe CO under high-temperature and high-pressure conditions2Stability of the emulsion in HTHP cecum residual oil, realize
To HTHP CO2The evaluation of stability of emulsion, while by microimaging head to CO2Microscopic pattern (the row of emulsion of emulsion
Liquid, coalescence, shattered to pieces etc.) observed, Analysis for CO2CO during emulsion is handled up2The principle of emulsion decay, can be to CO2Emulsion gulps down
The application told in HTHP stratum provides guidance.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, do not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is CO provided by the utility model2Emulsion, which is handled up, improves the evaluating apparatus structural representation of residual oil Flooding Efficiency
Figure；
Fig. 2 is CO provided by the utility model2Emulsion handle up improve residual oil Flooding Efficiency evaluating apparatus application side
The flow chart of method.
Description of reference numerals：
1：Constant-flux pump；
2：Crude oil intermediate receptacle；
3：Surfactant solution intermediate receptacle；
4：CO2 intermediate receptacles；
5：Drying tube；
6：Flowmeter；
7：Emulsion generator；
8：Six-way valve；
9：Microcosmic core model；
10：Heating and thermal insulation set；
11：Ring presses fluid cavity；
12：Microcosmic core holding unit；
13：Microimaging head；
14：Light source；
15：Temperature-controlled box；
16：Ring presses fluid cavity inlet；
17：Ring presses fluid cavity leakage fluid dram；
18：Back-pressure valve；
19：N2 gas cylinders.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to
The scope of the utility model protection.
Fig. 1 is CO provided by the utility model2Emulsion, which is handled up, improves the evaluating apparatus structural representation of residual oil Flooding Efficiency
Figure, as shown in figure 1, the CO2Emulsion handle up improve residual oil Flooding Efficiency evaluating apparatus include：
Microcosmic core holding unit 12, hold the microcosmic rock with multiple cecums in the microcosmic inner clamps of core holding unit 12
Heart model 9, the microcosmic outside of core holding unit 12 is heating and thermal insulation set 10；The heating and thermal insulation set 10 connects with temperature-controlled box 15
Connect, temperature is controlled by the temperature-controlled box 15；The bottom of microcosmic core holding unit 12 is provided with light source 14, the microcosmic rock core
The top of clamper 12 is provided with microscope camera 13, and it is the microcosmic top microimaging of core holding unit 12 that the light source 14, which is used for,
First 13 provide light；The outside of microcosmic core holding unit 12 is connected with confined pressure injection device 16,17；
The entrance point of microcosmic core model 9 respectively with crude oil intermediate receptacle 2, surfactant intermediate receptacle 3 and CO2In
Between container 4 connect；Can be by crude oil intermediate receptacle 2 to the microcosmic saturation crude oil of core model 9, the CO2CO in intermediate receptacle 42
With the solution in the surfactant intermediate receptacle 3 CO is produced in the presence of emulsion generator 72Emulsion, it is subsequently injected into institute
State microcosmic core model 9；The outlet of the microcosmic core model 9 is connected with back-pressure valve 18 and output liquor collecting device.
It is above-mentioned to be meant that：The microcosmic inner clamps of core holding unit 12 hold the microcosmic core model 9 with several cecums, outside
Portion is heating and thermal insulation set 10, controls temperature by temperature-controlled box 15, the light source 14 of the microcosmic bottom of core holding unit 12 is microcosmic rock core
The microimaging on the top of clamper 12 first 13 provides light, the microcosmic outside of core holding unit 12 be connected with confined pressure injection device 16,
17.Microcosmic one end of core model 9 is former to the microcosmic saturation of core model 9 by crude oil intermediate receptacle 2 to inject the import of fluid
Oil, CO2CO is produced in the presence of emulsion generator 7 by drying tube 5, flowmeter 6 and surfactant solution2Emulsion, then
Microcosmic core model 9 is injected, the microcosmic other end of core model 9 is connected with back-pressure valve 18, for controlling back pressure.
In the apparatus, the microcosmic core holding unit 12 is used to clamp the microcosmic core model 9, in the microcosmic rock
The outer confined pressure by the microcosmic rock core of liquid Regulation Control of heart model 9, upper space and the lower space difference of microcosmic core model 9
Ring pressure fluid cavity 11, simulated formation pressure are formed, and is observed by the microimaging first 13.
Optionally, in one kind in the specific implementation, the CO2Connect successively between intermediate receptacle 4 and the microcosmic core model 9
Drying tube 5 and flowmeter 6 are connected to, for CO2It is dried, and CO can be controlled by flowmeter in evaluation procedure2's
Flow.
Generally, the entrance point of the microcosmic core model 9 passes through six-way valve 8 and the crude oil intermediate receptacle 2, institute
State surfactant intermediate receptacle 3 and the CO2Intermediate receptacle 4 connects.
In concrete implementation, the crude oil intermediate receptacle 2, the surfactant intermediate receptacle 3 and the CO2Centre holds
Piston is provided with device 4, piston can be promoted mobile for the constant-flux pump 1 being connected with each intermediate receptacle so that stream in container
Body enters the microcosmic core model 9.
Optionally, crude oil intermediate receptacle 2, surfactant solution intermediate receptacle 3, CO2Intermediate receptacle 4, microcosmic rock core folder
Holder 12, N2Gas cylinder 19 is connected with pressure gauge, for measuring the pressure of the fluid in corresponding intermediate receptacle.
In concrete implementation, the other end and N of the back-pressure valve2Gas cylinder 19 connects.
Preferably, the microcosmic core model 9 includes the square lucite piece of two pieces of equal sizes, each organic glass
The inner surface of glass piece is a groove for having cecum, a pair of diagonal angle bags of the groove for having cecum between two lucite pieces
Guide passage is included, the both ends of guide passage are respectively entrance and exit.
Microcosmic core model 9 utilizes existing optical etching technology, by table in the square lucite piece of two pieces of equal sizes
Face etches a groove containing cecum, and etches guide passage in a pair of diagonal angles of the cecum groove, and water conservancy diversion leads to
The both ends on road are respectively to etch organic sheet glass entrance and exit, then bond above-mentioned two pieces of lucite pieces.
Optionally, described temperature-controlled box 15 is heated by electrical heating and attemperator to microcosmic core model 9, and is led to
The experimental temperature crossed under the conditions of thermocouple is obtained residing for microcosmic core model 9.
The microimaging first 13 is specifically used for CO2Emulsion overall process of handling up carries out real time image collection, and passes through figure
Gained image is handled as handling software, obtains CO2Emulsion, which is handled up, improves HTHP oil well cecum residual oil displacement effect
Fruit.
The CO that the present embodiment provides2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency, can be in HTHP bar
CO is observed by IMAQ method under part2Oil displacement efficiency and displacement of reservoir oil machine of the emulsion to raising HTHP oil well cecum residual oil
Reason, and intuitively can observe CO under high-temperature and high-pressure conditions2Stability of the emulsion in HTHP cecum residual oil, realize
To HTHP CO2The evaluation of stability of emulsion, while by microimaging head to CO2Microscopic pattern (the row of emulsion of emulsion
Liquid, coalescence, shattered to pieces etc.) observed, Analysis for CO2CO during emulsion is handled up2The principle of emulsion decay, can be to CO2Emulsion gulps down
The application told in HTHP stratum provides guidance.
Fig. 2 is CO provided by the utility model2Emulsion handle up improve residual oil Flooding Efficiency evaluating apparatus application side
The flow chart of method, as shown in Fig. 2 this method is mainly applied in the CO shown in Fig. 12Emulsion, which is handled up, improves residual oil Flooding Efficiency
Evaluating apparatus in, the specific implementation step of this method includes：
Step 1, setting experimental temperature and confined pressure, by temperature-controlled box regulating and controlling temperature, temperature control scope：Room temperature~120 DEG C, simulation ground
Layer temperature, fluid cavity is pressed to apply confined pressure, confined pressure scope to microcosmic rock core by ring：0~16MPa.
In this step, in a kind of concrete implementation mode, 80 DEG C of experimental temperature can be set by temperature-controlled box, passes through ring
Fluid cavity is pressed to apply confined pressure, confined pressure 10.5MPa, stable 12h to microcosmic rock core.
Step 2, experiment back pressure, back pressure scope are set by back-pressure valve：0~16MPa, simulate residing for microcosmic core model
Strata pressure.
In this step, experiment back pressure can be preferably set by back-pressure valve as 10MPa, simulates microcosmic core model institute
The strata pressure at place.
Step 3, by microcosmic core model saturation water, crude oil is then pumped into microcosmic core model with preset flow rate, directly
To rock core by mother oil displacement to fettering water state.
The step can be implemented as microcosmic core model saturation water, then with 0.05mL/min preset flow rate to
Be pumped into crude oil in microcosmic core model, until rock core by mother oil displacement to fettering water state.
The injection rate of step 4, control surface activator solution, and control CO2The injection rate of fluid, by CO2Fluid with
Surfactant solution in default gas liquid ratio injection emulsification generator according to being emulsified, and by caused CO2Emulsion injection is micro-
See in core model.
In this step, specifically flowmeter can be passed through by the injection rate of constant-flux pump control surface activator solution
Control CO2The injection rate of fluid, by CO2Fluid is with surfactant solution according in certain gas liquid ratio injection emulsification generator
Emulsified, and by caused CO2Emulsion is injected in microcosmic core model.
A kind of specific implementation is to be pumped into matter into microcosmic core model by constant-flux pump with 0.01ml/min flow velocity
Concentration 1.0wt% two-(2- ethylhexyls)-sulfonic acid sodium succinate (AOT) is measured, CO is controlled by flowmeter2The injection of fluid
Speed is 0.02ml/min, by CO2Fluid is with surfactant solution according to 2:Carried out in 1 gas liquid ratio injection emulsification generator
Emulsification, and by caused CO2Emulsion is injected in microcosmic core model；
Step 5, the valve at microcosmic core model both ends is closed to preset duration, the stewing well process of simulation.
For example, the valve at microcosmic core model both ends is closed into 48h, stewing well process is simulated.
Step 6, liquid feed valve is opened, the cecum residual oil in microcosmic core model is plucked out of in recovery process is depressured, mould
Intend CO2Emulsion is handled up recovery process.
Step 7, by microimaging head to CO2Emulsion handle up improve HTHP oil well cecum residual oil Flooding Efficiency enter
Row IMAQ, comparative analysis can obtain CO2Emulsion, which is handled up, improves HTHP oil well cecum residual oil Flooding Efficiency.
In this step, by microimaging head to CO2Emulsion, which is handled up, improves HTHP oil well cecum residual oil displacement
Effect carries out IMAQ, and comparative analysis can obtain CO2Emulsion, which is handled up, improves HTHP oil well cecum residual oil Flooding Efficiency,
CO can be observed2Interaction mechanism and CO of the emulsion during stewing well with HTHP oil well cecum residual oil2Emulsion containing
Stability in oily HTHP stratum.
The CO that the present embodiment provides2Emulsion, which is handled up, improves the evaluation method of residual oil Flooding Efficiency, passes through IMAQ method
Observe CO2Emulsion, and can be in high temperature height to improving the oil displacement efficiency and mechanism of oil displacement of HTHP oil well cecum residual oil
CO is intuitively observed under the conditions of pressure2Stability of the emulsion in HTHP cecum residual oil, is realized to HTHP CO2Emulsion
The evaluation of stability, while by microimaging head to CO2The microscopic pattern (discharge opeing of emulsion, coalescence, vanish etc.) of emulsion enters
Row observation, Analysis for CO2CO during emulsion is handled up2The principle of emulsion decay, can be to CO2Emulsion is handled up on HTHP stratum
In application provide guidance.
One of ordinary skill in the art will appreciate that：Program can be passed through by realizing the part steps of above-mentioned each method embodiment
Related hardware is instructed to complete.Foregoing program can be stored in a computer read/write memory medium.The program is being held
During row, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：Read-only storage (English：
Read-only memory, abbreviation：ROM), RAM, flash memory, hard disk, solid state hard disc, tape (English：magnetic
Tape), floppy disk (English：Floppy disk), CD (English：Optical disc) and its any combination.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (9)
- A kind of 1. CO2Emulsion, which is handled up, improves the evaluating apparatus of residual oil Flooding Efficiency, it is characterised in that including：Microcosmic core holding unit, hold the microcosmic core model with multiple cecums in the microcosmic core holding unit inner clamps, It is heating and thermal insulation set outside the microcosmic core holding unit；The heating and thermal insulation set is connected with temperature-controlled box, passes through the temperature-controlled box Control temperature；The microcosmic core holding unit bottom is provided with light source, and the microcosmic core holding unit top is provided with microscope Camera, the light source are used to provide light for microcosmic core holding unit top microimaging head；The microcosmic core holding unit Outside is connected with confined pressure injection device；The entrance point of microcosmic core model respectively with crude oil intermediate receptacle, surfactant intermediate receptacle and CO2Intermediate receptacle connects Connect；Can be by crude oil intermediate receptacle to microcosmic core model saturation crude oil, the CO2CO in intermediate receptacle2Lived with the surface Solution in property agent intermediate receptacle produces CO in the presence of emulsion generator2Emulsion, it is subsequently injected into the microcosmic core model； The outlet of the microcosmic core model is connected with back-pressure valve and output liquor collecting device；The microcosmic core holding unit is used to clamp the microcosmic core model, is adjusted outside the microcosmic core model by liquid The confined pressure of the voltage-controlled microcosmic rock core of system, the upper space and lower space of microcosmic core model form ring pressure fluid cavity, simulation respectively Strata pressure, and observed by the microimaging head.
- 2. device according to claim 1, it is characterised in that the CO2Between intermediate receptacle and the microcosmic core model It is connected with drying tube and flowmeter in turn.
- 3. device according to claim 2, it is characterised in that the entrance point of the microcosmic core model by six-way valve with The crude oil intermediate receptacle, the surfactant intermediate receptacle and the CO2Intermediate receptacle connects.
- 4. device according to claim 3, it is characterised in that among the crude oil intermediate receptacle, the surfactant Container and the CO2Piston is provided with intermediate receptacle, the constant-flux pump being connected with each intermediate receptacle can promote piston to move Move so that the fluid in container enters the microcosmic core model.
- 5. according to the device described in any one of Claims 1-4, it is characterised in that the other end and N of the back-pressure valve2Gas cylinder connects Connect.
- 6. device according to claim 5, it is characterised in that described microcosmic core model includes two pieces of equal sizes Square lucite piece, the inner surface of each lucite piece are a groove for having cecum, between two lucite pieces A pair of diagonal angles of the groove for having cecum include guide passage, the both ends of guide passage are respectively entrance and exit.
- 7. device according to claim 5, it is characterised in that described temperature-controlled box is by electrical heating and attemperator to micro- Core model is seen to be heated, and the experimental temperature under the conditions of being obtained by thermocouple residing for microcosmic core model.
- 8. device according to claim 5, it is characterised in that the microimaging head is specifically used for CO2Emulsion is handled up entirely Process carries out real time image collection, and the image to obtained by is handled as image processing software, obtains CO2Emulsion is handled up raising HTHP oil well cecum residual oil Flooding Efficiency.
- 9. device according to claim 5, it is characterised in that the crude oil intermediate receptacle, the surfactant solution Intermediate receptacle and the CO2Intermediate receptacle is connected with pressure gauge respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720515966.8U CN206832693U (en) | 2017-05-10 | 2017-05-10 | CO2Evaluation device for improving residual oil displacement effect by taking in and sending out emulsion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720515966.8U CN206832693U (en) | 2017-05-10 | 2017-05-10 | CO2Evaluation device for improving residual oil displacement effect by taking in and sending out emulsion |
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| CN206832693U true CN206832693U (en) | 2018-01-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593252A (en) * | 2018-04-04 | 2018-09-28 | 中国石油天然气股份有限公司 | Fluid form visualization observation system and oil reservoir exploration method |
| CN108872230A (en) * | 2017-05-10 | 2018-11-23 | 中国石油天然气股份有限公司 | CO2Evaluation method and device for improving residual oil displacement effect by emulsion huff and puff |
| CN109142683A (en) * | 2018-09-19 | 2019-01-04 | 中国海洋石油集团有限公司 | A kind of displacement test device and experimental method |
-
2017
- 2017-05-10 CN CN201720515966.8U patent/CN206832693U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108872230A (en) * | 2017-05-10 | 2018-11-23 | 中国石油天然气股份有限公司 | CO2Evaluation method and device for improving residual oil displacement effect by emulsion huff and puff |
| CN108593252A (en) * | 2018-04-04 | 2018-09-28 | 中国石油天然气股份有限公司 | Fluid form visualization observation system and oil reservoir exploration method |
| CN108593252B (en) * | 2018-04-04 | 2020-08-07 | 中国石油天然气股份有限公司 | Fluid form visualization observation system and oil reservoir exploration method |
| CN109142683A (en) * | 2018-09-19 | 2019-01-04 | 中国海洋石油集团有限公司 | A kind of displacement test device and experimental method |
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