CN108226312A - The evaluating apparatus and method of surfactant activity during rock core displacement - Google Patents
The evaluating apparatus and method of surfactant activity during rock core displacement Download PDFInfo
- Publication number
- CN108226312A CN108226312A CN201611158604.4A CN201611158604A CN108226312A CN 108226312 A CN108226312 A CN 108226312A CN 201611158604 A CN201611158604 A CN 201611158604A CN 108226312 A CN108226312 A CN 108226312A
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- core
- surfactant
- intermediate receptacle
- sampler
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Links
- 239000011435 rock Substances 0.000 title claims abstract description 62
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 42
- 230000015227 regulation of liquid surface tension Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000011162 core material Substances 0.000 claims abstract description 139
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 239000004094 surface-active agent Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 239000010779 crude oil Substances 0.000 claims abstract description 25
- 238000011156 evaluation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 238000004128 high performance liquid chromatography Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 239000004576 sand Substances 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
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/40—Controlling or monitoring, e.g. of flood or hurricane; Forecasting, e.g. risk assessment or mapping
Abstract
The present invention provides the evaluating apparatus and method of surfactant activity during a kind of rock core displacement, wherein, device includes：The core material of different-grain diameter can be filled in one-dimensional core model, the inside of one-dimensional core model；Equidistant multiple sample taps are offered on the side of one-dimensional core model, each sample tap is connect by pipeline with a sampler；One valve is set on every pipeline；Sampler is used to collect the core fluids of corresponding sample tap position；One end of one-dimensional core model is connect with intermediate receptacle, and the other end of one-dimensional core model is connect with production fluid collection vessel；Intermediate receptacle is used to load any one in water, crude oil and surfactant；Production fluid collection vessel is used to collect rock core production fluid.The evaluating apparatus of surfactant activity during rock core displacement provided by the invention improves the evaluation accuracy of surfactant activity during rock core displacement.
Description
Technical field
The present invention relates to surfactant activity during oil-gas field development technical field more particularly to a kind of rock core displacement
Evaluating apparatus and method.
Background technology
Surfactant can be diluted during rock core displacement by formation fluid, can also be adsorbed in rock surface, this causes
Activity of the surfactant in rock core is greatly reduced, and directly affects the effect of surfactant.Therefore, it measures and is driven in rock core
It is very necessary for surfactant activity in the process.
Number of patent application is that the patent of CN 201310739301.1 discloses a kind of side for measuring surfactant activity
Method, this method utilize the production fluid of foam displacement process, and foaming characteristic is carried out to production fluid by paddling process or foam scanning method
And the measure of half-life period, so that it is determined that its activity.
But this method characterizes its activity simply by the foaming characteristic and stability of surfactant, repeatability is poor.
In addition, it is desirable to which related experiment measure can just be carried out by collecting certain production fluid in the port of export, experimental result can only qualitative evaluation
The foamability and stability of surfactant so that evaluation result accuracy is very low.
Invention content
The present invention provides the evaluating apparatus and method of surfactant activity during a kind of rock core displacement, improves rock core
The evaluation accuracy of surfactant activity in displacement process.
The evaluating apparatus of surfactant activity during rock core displacement provided by the invention, including：
The core material of different-grain diameter can be filled in one-dimensional core model, the inside of the one-dimensional core model；
Offer equidistant multiple sample taps on the side of the one-dimensional core model, each sample tap by pipeline with
One sampler connection；One valve is set on every pipeline；The sampler is used to collect the rock of corresponding sample tap position
Heart fluid；
One end of the one-dimensional core model is connect with intermediate receptacle, the other end and production fluid of the one-dimensional core model
Collection vessel connects；The intermediate receptacle is used to load any one in water, crude oil and surfactant；The production fluid is received
Collection container is used to collect rock core production fluid.
Optionally, the sampler includes stainless steel casing and transparent glass liner, and the both ends of the sampler are set respectively
The inlet and liquid outlet connected with the transparent glass liner is equipped with, the inlet is connected by pipeline with corresponding sample tap
It connects, the liquid outlet is connected with valve.
Optionally, it is provided with watch window on the stainless steel casing.
Optionally, the one-dimensional core model includes the shell of cylindrical shape, and cylindrical is provided in the shell
The inner cavity of shape.
Optionally, the intermediate receptacle is connect by pipeline with constant-flux pump, and the constant-flux pump is used for the intermediate receptacle
In fluid input the one-dimensional core model.
Optionally, piston is provided in the intermediate receptacle, the piston will be separated into first inside the intermediate receptacle
Chamber and second chamber；The first chamber is connect by pipeline with one end of the one-dimensional core model, the second chamber
It is connect by pipeline with the constant-flux pump；The first chamber is used to load any one in water, crude oil and surfactant.
Optionally, it is provided with valve on the pipeline between the intermediate receptacle and the stream pump.
Optionally, the intermediate receptacle is connected with pressure gauge.
Optionally, it is provided on the pipeline between the other end of the one-dimensional core model and the production fluid collection vessel
Valve.
The evaluation method of surfactant activity during rock core displacement provided by the invention, applied to the embodiment of the present invention
The evaluating apparatus of surfactant activity during the rock core displacement of offer, the method includes：
Intermediate receptacle is filled with into distilled water or water flooding, inputs and distills to one-dimensional core model according to the first preset flow rate
Water or water flooding；
Intermediate receptacle is filled with into crude oil, crude oil is inputted to one-dimensional core model according to the second preset flow rate, until reaching beam
Tie up water state；
Intermediate receptacle is filled with into surfactant solution, is lived according to third preset flow rate to one-dimensional core model input surface
Property agent solution；
The valve between all sample taps and corresponding sample device is opened, so that core fluids flow into corresponding sampler；
The valve between all sample taps and corresponding sample device is closed, the core fluids solution in sampler is poured into sample
After surfactant solution is detached with crude oil, the surface-active for obtaining core fluids is detected using high performance liquid chromatography for bottle
Agent concentration.
Optionally, the valve opened between all sample taps and corresponding sample device, corresponds to so that core fluids flow into
Sampler, including：
When the crude oil recovery percent of reserves of rock core production fluid is default value, open between all sample taps and corresponding sample device
Valve so that core fluids flow into corresponding sampler.
The present invention provides the evaluating apparatus and method of surfactant activity during a kind of rock core displacement, device packets
It includes：The core material of different-grain diameter can be filled in one-dimensional core model, the inside of one-dimensional core model.The side of one-dimensional core model
On offer equidistant multiple sample taps, each sample tap is connect by pipeline with a sampler.It is set on every pipeline
One valve.Sampler is used to collect the core fluids of corresponding sample tap position.One end of one-dimensional core model holds with intermediate
Device connects, and the other end of one-dimensional core model is connect with production fluid collection vessel.Intermediate receptacle is used to load water, crude oil and surface
Any one in activating agent.Production fluid collection vessel is used to collect rock core production fluid.Evaluating apparatus provided by the invention, passes through
Sampler can obtain the surfactant solution of different location different time during rock core displacement, and then get rock core not
With the quantitative data of the surfactant activity of position different moments, surfactant activity during rock core displacement is improved
Evaluate accuracy.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other attached drawings are obtained according to these attached drawings.
The structure of the evaluating apparatus of surfactant activity during the rock core displacement that Fig. 1 is provided for the embodiment of the present invention one
Schematic diagram；
Fig. 2 is the structure diagram of sampler that the embodiment of the present invention one provides；
The flow of the evaluation method of surfactant activity during the rock core displacement that Fig. 3 is provided for the embodiment of the present invention one
Figure.
Reference sign：
11：One-dimensional core model；
12：Core material；
13：Sample tap；
14：Sampler；
15：Valve；
16：Intermediate receptacle；
17：Production fluid collection vessel；
18：Stainless steel casing；
19：Transparent glass liner；
20：Inlet；
21：Liquid outlet；
22：Watch window；
23：Constant-flux pump；
24：Piston；
25：First chamber；
26：Second chamber；
27：Pressure gauge.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work shall fall within the protection scope of the present invention.
The structure of the evaluating apparatus of surfactant activity during the rock core displacement that Fig. 1 is provided for the embodiment of the present invention one
Schematic diagram.As shown in Figure 1, during rock core displacement provided in this embodiment surfactant activity evaluating apparatus, can wrap
It includes：
The core material 12 of different-grain diameter can be filled in one-dimensional core model 11, the inside of one-dimensional core model 11.
Equidistant multiple sample taps 13 are offered on the side of one-dimensional core model 11, each sample tap 13 passes through pipeline
It is connect with a sampler 14.One valve 15 is set on every pipeline.Sampler 14 is used to collect corresponding sample tap 13
The core fluids put.
One end of one-dimensional core model 11 is connect with intermediate receptacle 16, and the other end and the production fluid of one-dimensional core model 11 are received
Collection container 17 connects.Intermediate receptacle 16 is used to load any one in water, crude oil and surfactant.Production fluid collection vessel
17 are used to collect rock core production fluid.
Specifically, when carrying out rock core displacement test, the inside of one-dimensional core model 11 can fill the stone of different meshes
Sand.By filling with water, crude oil or surfactant in intermediate receptacle 16, saturated water, saturation into rock core can be realized
Oil and surfactant displacement.The valve 15 between sample tap 13 and sampler 14 is controlled, can be collected in sampler 14
To the core fluids of rock core different location different moments.Core fluids in sampler 14 are carried out using high performance liquid chromatography
Analysis, it is possible to which detection obtains the surfactant concentration of the core fluids of rock core different location different moments, so as to obtain
The quantitative data result of surfactant activity during rock core displacement.
Wherein, the activity in all embodiments of the invention, the also referred to as rate of disintegration refer to that sample decays within the unit interval
Atomicity, i.e. the effective concentration of something or referred to as effective mole fraction of substance.
As it can be seen that during rock core displacement provided in this embodiment surfactant activity evaluating apparatus, pass through sampler
14 can obtain the surfactant solution of different location different time during rock core displacement, and then get rock core difference position
The quantitative data of the surfactant activity of different moments is put, improves the evaluation of surfactant activity during rock core displacement
Accuracy.Compared with the prior art, solve by collect production fluid carry out surfactant activity qualitative analysis caused by
The technical issues of evaluation result is inaccurate.
It should be noted that the present embodiment is not specially limited shape, the material of one-dimensional core model 11, according to need
It is configured.
Optionally, as a kind of concrete implementation mode, one-dimensional core model 11 includes the shell of cylindrical shape, shell
Inside it is provided with the inner cavity of cylindrical shape.
Optionally, the length of one-dimensional core model 11 is 600mm.
Optionally, the shell of one-dimensional core model 11 is metal shell.
It should be noted that the present embodiment is not specially limited the shape and capacity of intermediate receptacle 16, as needed
It is configured.
Optionally, the capacity of intermediate receptacle 16 is 1L.
Optionally, as a kind of concrete implementation mode, Fig. 2 is that the structure of sampler that the embodiment of the present invention one provides is shown
It is intended to.As shown in Fig. 2, sampler includes stainless steel casing 18 and transparent glass liner 19, the both ends of sampler are respectively arranged with
The inlet 20 and liquid outlet 21 connected with transparent glass liner 19, inlet 20 are connected by pipeline with corresponding sample tap 13
It connects, liquid outlet 21 is connected with valve 15.
Optionally, the front end of liquid inlet is connected with valve 15.
Optionally, it is provided with watch window 22 on stainless steel casing 18.
By setting watch window 22 on stainless steel casing 18, experimenter can see during rock core displacement test
The state of core fluids in sampler is examined, experimenter's observation experiment process is facilitated, improves the flexible of rock core displacement test
Property.
Wherein, the present embodiment is not specially limited the position of watch window 22, shape.
Optionally, intermediate receptacle 16 is connect by pipeline with constant-flux pump 23, and constant-flux pump 23 is used for will be in intermediate receptacle 16
Fluid inputs one-dimensional core model 11.
Wherein, the present embodiment is not specially limited the model and type of constant-flux pump 23.
Optionally, piston 24 is provided in intermediate receptacle 16, piston 24 will be separated into first chamber inside intermediate receptacle 16
25 and second chamber 26.First chamber 25 is connect by pipeline with one end of one-dimensional core model 11, and second chamber 26 passes through pipe
Line is connect with constant-flux pump 23.First chamber 25 is used to load any one in water, crude oil and surfactant.
Optionally, it is provided with valve 15 on the pipeline between intermediate receptacle 16 and stream pump.
Optionally, intermediate receptacle 16 is connected with pressure gauge 27.
By setting pressure gauge 27, intermediate receptacle 16 saturated water, saturated oils and surface-active into rock core can be controlled
The pressure of agent displacement, fluid flow rate improve the accuracy of rock core displacement test.
Optionally, it is provided with valve on the pipeline between the other end of one-dimensional core model 11 and production fluid collection vessel 17
15。
A kind of evaluating apparatus of surfactant activity during rock core displacement is present embodiments provided, including：One-dimensional rock
Heart model, intermediate receptacle, production fluid collection vessel offer equidistant multiple sample taps on the side of one-dimensional core model,
Each sample tap is connect by pipeline with a sampler.Evaluating apparatus provided in this embodiment can be obtained by sampler
The surfactant solution of different location different time during rock core displacement, and then get rock core different location different moments
Surfactant activity quantitative data, improve the evaluation accuracy of surfactant activity during rock core displacement.
The flow of the evaluation method of surfactant activity during the rock core displacement that Fig. 3 is provided for the embodiment of the present invention one
Figure.As shown in figure 3, during rock core displacement provided in this embodiment surfactant activity evaluation method, applied to Fig. 1~
The evaluating apparatus of surfactant activity, method include during the rock core displacement that Fig. 2 device embodiments provide：
Intermediate receptacle is filled with distilled water or water flooding by step 101, according to the first preset flow rate to one-dimensional core model
Input distilled water or water flooding.
Optionally, if evaluating apparatus includes constant-flux pump, this step is specially：Intermediate receptacle is filled with into distilled water or ground
Layer water, opens constant-flux pump, opens the valve between constant-flux pump and intermediate receptacle, according to the first preset flow rate to one-dimensional core model
Input distilled water or water flooding.
Wherein, the present embodiment is not specially limited the concrete numerical value of the first preset flow rate, is configured as needed.
Such as：First preset flow rate can be 2mL/min.
Intermediate receptacle is filled with crude oil by step 102, inputs crude oil to one-dimensional core model according to the second preset flow rate, directly
To reaching constraint water state.
Optionally, if evaluating apparatus includes constant-flux pump, this step is specially：Intermediate receptacle is filled with into crude oil, is opened flat
Stream pump, opens the valve between constant-flux pump and intermediate receptacle, inputs crude oil to one-dimensional core model according to the second preset flow rate, directly
To reaching constraint water state.
Optionally, when reaching constraint water state, the crude oil volume of saturation is recorded.
Wherein, the present embodiment is not specially limited the concrete numerical value of the second preset flow rate, is configured as needed.
Such as：Second preset flow rate can be 2mL/min.
Intermediate receptacle is filled with surfactant solution by step 103, defeated to one-dimensional core model according to third preset flow rate
Enter surfactant solution.
Optionally, if evaluating apparatus includes constant-flux pump, this step is specially：It is molten that intermediate receptacle is filled with into surfactant
Liquid opens constant-flux pump, opens the valve between constant-flux pump and intermediate receptacle, defeated to one-dimensional core model according to third preset flow rate
Enter surfactant solution.
Wherein, the present embodiment is not specially limited the specific implementation of surfactant solution, as needed into
Row setting.
Optionally, surfactant solution can be two-(2- the ethylhexyls)-sulfonic acid of 0.5~1.5wt% of mass concentration
Sodium succinate solution (AOT) or lauryl sodium sulfate (SDS).
Wherein, the present embodiment is not specially limited the concrete numerical value of third preset flow rate, is configured as needed.
Such as：Third preset flow rate can be 1mL/min.
Valve between step 104, all sample taps of opening and corresponding sample device, so that core fluids flow into corresponding take
Sample device.
Optionally, as a kind of specific embodiment, the valve between all sample taps and corresponding sample device is opened, with
Core fluids is made to flow into corresponding sampler, can be included：
When the crude oil recovery percent of reserves of rock core production fluid is default value, open between all sample taps and corresponding sample device
Valve so that core fluids flow into corresponding sampler.
Wherein, the present embodiment is not specially limited the concrete numerical value of default value, is configured as needed.Example
Such as：Default value can be 5%, 10%, etc..
Valve between step 105, all sample taps of closing and corresponding sample device, by the core fluids solution in sampler
Sample bottle is poured into, after surfactant solution is detached with crude oil, is detected using high performance liquid chromatography and obtains core fluids
Surfactant concentration.
As it can be seen that during rock core displacement provided in this embodiment surfactant activity evaluation method, by sampler,
Can obtain different location during rock core displacement, different time, different crude oils recovery percent of reserves surfactant solution, and then
The quantitative data of the surfactant activity of rock core different location different moments is got, improves surface during rock core displacement
The evaluation accuracy of activating agent activity.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Aforementioned program can be stored in a computer read/write memory medium.The journey
Sequence when being executed, performs the step of including above-mentioned each method embodiment；And aforementioned storage medium includes：ROM, RAM, magnetic disc or
The various media that can store program code such as person's CD.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical features into
Row equivalent replacement；And these modifications or replacement, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of evaluating apparatus of surfactant activity during rock core displacement, which is characterized in that including：
The core material of different-grain diameter can be filled in one-dimensional core model, the inside of the one-dimensional core model；
Equidistant multiple sample taps are offered on the side of the one-dimensional core model, each sample tap passes through pipeline and one
Sampler connects；One valve is set on every pipeline；The sampler is used to collect the rock core stream of corresponding sample tap position
Body；
One end of the one-dimensional core model is connect with intermediate receptacle, and the other end and the production fluid of the one-dimensional core model are collected
Container connects；The intermediate receptacle is used to load any one in water, crude oil and surfactant；The production fluid, which is collected, to be held
Device is used to collect rock core production fluid.
2. the apparatus according to claim 1, which is characterized in that the sampler is included in stainless steel casing and transparent glass
Courage, the both ends of the sampler are respectively arranged with the inlet and liquid outlet that are connected with the transparent glass liner, the feed liquor
Mouth is connected by pipeline with corresponding sample tap, and the liquid outlet is connected with valve.
3. the apparatus of claim 2, which is characterized in that be provided with watch window on the stainless steel casing.
4. the apparatus according to claim 1, which is characterized in that the one-dimensional core model includes the outer of cylindrical shape
Shell is provided with the inner cavity of cylindrical shape in the shell.
5. the apparatus according to claim 1, which is characterized in that the intermediate receptacle is connect by pipeline with constant-flux pump, institute
Constant-flux pump is stated for the fluid in the intermediate receptacle to be inputted the one-dimensional core model.
6. device according to claim 5, which is characterized in that piston is provided in the intermediate receptacle, the piston will
First chamber and second chamber are separated into inside the intermediate receptacle；The first chamber passes through pipeline and the one-dimensional rock core mould
One end connection of type, the second chamber are connect by pipeline with the constant-flux pump；The first chamber is used to load water, crude oil
With any one in surfactant.
7. device according to claim 5, which is characterized in that set on the pipeline between the intermediate receptacle and the stream pump
It is equipped with valve.
8. the apparatus according to claim 1, which is characterized in that the intermediate receptacle is connected with pressure gauge.
9. a kind of evaluation method of surfactant activity during rock core displacement, which is characterized in that applied to claim 1 to
The evaluating apparatus of surfactant activity during 8 any one of them rock core displacements, the method includes：
Intermediate receptacle is filled with into distilled water or water flooding, according to the first preset flow rate to one-dimensional core model input distilled water or
Person's water flooding；
Intermediate receptacle is filled with into crude oil, crude oil is inputted to one-dimensional core model according to the second preset flow rate, until reaching irreducible water
State；
Intermediate receptacle is filled with into surfactant solution, surfactant is inputted to one-dimensional core model according to third preset flow rate
Solution；
The valve between all sample taps and corresponding sample device is opened, so that core fluids flow into corresponding sampler；
The valve between all sample taps and corresponding sample device is closed, the core fluids solution in sampler is poured into sample bottle,
After surfactant solution is detached with crude oil, the surfactant that acquisition core fluids are detected using high performance liquid chromatography is dense
Degree.
10. according to the method described in claim 9, it is characterized in that, described open between all sample taps and corresponding sample device
Valve so that core fluids flow into corresponding sampler, including：
When the crude oil recovery percent of reserves of rock core production fluid is default value, the valve between all sample taps and corresponding sample device is opened
Door, so that core fluids flow into corresponding sampler.
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| CN201611158604.4A CN108226312B (en) | 2016-12-15 | 2016-12-15 | Device and method for evaluating activity of surfactant in core displacement process |
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|---|---|---|---|
| CN201611158604.4A CN108226312B (en) | 2016-12-15 | 2016-12-15 | Device and method for evaluating activity of surfactant in core displacement process |
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| CN112098155A (en) * | 2020-09-14 | 2020-12-18 | 中国石油大学(北京) | Oil reservoir oil-water-rock reaction experimental device and method and sampling position determination method |
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