CN206960383U - The evaluating apparatus of foam power of regeneration in heterogeneous core displacement process - Google Patents
The evaluating apparatus of foam power of regeneration in heterogeneous core displacement process Download PDFInfo
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- CN206960383U CN206960383U CN201621363717.3U CN201621363717U CN206960383U CN 206960383 U CN206960383 U CN 206960383U CN 201621363717 U CN201621363717 U CN 201621363717U CN 206960383 U CN206960383 U CN 206960383U
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Abstract
The utility model provides a kind of evaluating apparatus of foam power of regeneration in heterogeneous core displacement process, and the device includes：Heterogeneous core model side opens up multiple sample taps, each sample tap is connected with sampler, the heterogeneous core of different permeabilities can be filled inside model, sampler is used for the core fluids for collecting corresponding sample tap position, heterogeneous core model connection input valve, input valve connect crude oil, foaming agent and N respectively2The intermediate receptacle of gas, heterogeneous core model the other end connection back-pressure valve, back-pressure valve respectively with N2Gas cylinder connects with output liquid container, CT scanner is connected with heterogeneous core model, for scanning CT value of the heterogeneous core under different voltages and different condition, rock core is evaluated by obtained CT values, consider to evaluate the power of regeneration of foam diverse location at different moments in the case of fluid saturation in stratum, numerical simulation is not applied, can real reaction experiment actual value.
Description
Technical field
It the utility model is related to foam in Oil-Gas Field Development Engineering technology, more particularly to a kind of heterogeneous core displacement process
The evaluating apparatus of power of regeneration.
Background technology
Foaming agent constantly can vanish and regenerate during rock core displacement, the valid density meeting under the influence of formation fluid
Reduce, while also can adsorb a part of foaming agent in rock surface, and the saturation degree of fluid can be also influenceed in stratum in stratum
The power of regeneration of foam.This causes activity of the surfactant in rock core to be greatly reduced, and will directly affect surfactant
Drive and the effect of foam flooding.Therefore, evaluating the foam power of regeneration during rock core displacement both needs to obtain the effective of foaming agent
Concentration, it is also desirable to the three-phase saturation numerical value at this section.
The patent that number of patent application is CN 201310739301.1 passes through the side that is stirred to the foaming agent solution of output
Method determines its foaming volume and half-life period, so as to evaluate foam power of regeneration.This method is by collecting the output of certain volume
Liquid is evaluated, and is the performance of the foaming agent solution of output in a period, it is impossible to obtain the foam at the diverse location of stratum
Power of regeneration.And the presence of oil gas water can influence the power of regeneration of foaming agent in the earth formation, it has to consider.In addition, 2012
Nian《Petroleum geology and engineering》The paper that the 1st phase of volume 26 delivers《In pore media foam size and power of regeneration research with
Using》The regenerability of several foaming agents is have studied using the visual foam generation of self assembly and means of locomotion, is existed by foaming agent
Ability, the sealing characteristics under low concentration and the anti-stratum water dilution capacity for producing foam under low concentration weigh foam Regenerated energy
Power, relatively large this point mainly is influenceed by concentration using foam height, bubble is evaluated with the foaming volume of foaming agent production fluid
The power of regeneration of foam.Although this method is associated with foaming agent concentration by the power of regeneration of foaming agent, the liquid of production fluid
Measure limited, and be the production fluid of a period, experimental result repeatability is poor, is had a great influence by factors such as temperature.
In summary, evaluation method of foam power of regeneration during rock core displacement is mostly numerical simulation or led at present
Cross paddling process and foamability and half-life period are carried out to production fluid, evaluation that can not the be authentic and valid foam during rock core displacement
Power of regeneration.
Utility model content
The utility model provides a kind of evaluating apparatus of foam power of regeneration in heterogeneous core displacement process, for solving
At present evaluation during rock core displacement the method for foam power of regeneration be mostly numerical simulation or by paddling process to production fluid
Foamability and half-life period are carried out, evaluation that can not the be authentic and valid power of regeneration of foam during rock core displacement is asked
Topic.
The utility model first aspect provides a kind of evaluating apparatus of foam power of regeneration in heterogeneous core displacement process,
Including：
Heterogeneous core model, the heterogeneous core model side offer equidistant multiple sample taps, Mei Gequ
Sample mouth is connected with a sampler；The heterogeneous core of different permeabilities can be filled inside the heterogeneous core model；Each
Sampler is used for the core fluids for collecting corresponding sample tap position；
Described heterogeneous core model one end is connected with input valve, and the input valve other end is connected in crude oil respectively
Between container, foaming agent intermediate receptacle and N2Gas intermediate receptacle；The other end connection back-pressure valve of the heterogeneous core model, institute
State back-pressure valve respectively with N2Gas cylinder connects with output liquid container；
CT scanner, the CT scanner is connected with the heterogeneous core model, for scanning the heterogeneous core
CT values under different voltages and different condition.
In a kind of implementation specifically, the input valve is six-way valve, the crude oil intermediate receptacle, described
Infusion intermediate receptacle and the N2Gas intermediate receptacle is respectively arranged with constant-flux pump, and the constant-flux pump is used for will corresponding middle appearance
Fluid in device inputs the heterogeneous core model by the six-way valve.
In a kind of implementation specifically, the crude oil intermediate receptacle, the N2Gas intermediate receptacle and described
Piston is provided with infusion intermediate receptacle, the constant-flux pump being connected with each intermediate receptacle can promote piston mobile so that holding
Fluid in device enters the heterogeneous core model.
In a kind of implementation specifically, each sampler includes stainless steel casing and clear glass inner bag, described
Sampler both ends are respectively arranged with the inlet and liquid outlet being connected with clear glass inner bag, the inlet by pipeline with
Corresponding sample tap connection, the liquid outlet are connected with valve on the heterogeneous core model.
In a kind of implementation specifically, described N2It is gas intermediate receptacle, the foaming agent intermediate receptacle, described
Crude oil intermediate receptacle and the N2Pressure gauge is respectively connected with gas cylinder.
In a kind of implementation specifically, bubble is provided between the foaming agent intermediate receptacle and the input valve
Foam generator.
In a kind of implementation specifically, the N2Gas is provided between gas interstitial volume and the input valve
Flowmeter body.
The evaluating apparatus of foam power of regeneration, passes through CT dual intensities in heterogeneous core displacement process provided by the utility model
Synchronous scanning method obtains three-phase fluid saturation degree in inhomogeneous formation displacement process, and can utilize high performance liquid chromatography pair
Solution example in sampler carries out the detection of foaming agent valid density, prepares the foaming agent solution of corresponding valid density, passes through
The foamability of foaming agent solution of the paddling process evaluation under the conditions of different oil saturations, and then evaluate and driven in inhomogeneous formation
Foam power of regeneration during replacing.In the case of fluid saturation in considering stratum to foam diverse location at different moments again
Raw ability is evaluated, not using numerical simulation, it is assumed that and it is less, can real reaction experiment actual value.
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 that the evaluating apparatus structure of foam power of regeneration in heterogeneous core displacement process provided by the utility model is shown
It is intended to；
Fig. 2 is the application of the evaluating apparatus of foam power of regeneration in heterogeneous core displacement process provided by the utility model
The flow chart of embodiment of the method one；
Fig. 3 is the application of the evaluating apparatus of foam power of regeneration in heterogeneous core displacement process provided by the utility model
The flow chart of embodiment of the method two.
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 that the evaluating apparatus structure of foam power of regeneration in heterogeneous core displacement process provided by the utility model is shown
It is intended to, as shown in figure 1, the evaluating apparatus of foam power of regeneration includes in the heterogeneous core displacement process：
Heterogeneous core model 9, the side of heterogeneous core model 9 offer equidistant multiple sample taps 8, each
Sample tap 8 is connected with a sampler 10；The inside of heterogeneous core model 9 can fill the heterogeneous rock of different permeabilities
The heart；Each sampler 10 is used for the core fluids for collecting the corresponding position of sample tap 8；As shown in figure 1, the heterogeneous core model
Two parts fill the rock core of different permeabilities up and down in 9.
Described one end of heterogeneous core model 9 is connected with input valve 7, and the input other end of valve 7 connects original respectively
Oily intermediate receptacle 2, foaming agent intermediate receptacle 3 and N2Gas intermediate receptacle 4；The other end connection of the heterogeneous core model 9
Back-pressure valve 11, the back-pressure valve 11 respectively with N2Gas cylinder 13 and output liquid container 12 connect；
CT scanner 14, the CT scanner 14 is connected with the heterogeneous core model 9, described heterogeneous for scanning
CT value of the rock core under different voltages and different condition.
In the device in the specific implementation, the input valve 7 is six-way valve 7, the crude oil intermediate receptacle 2, described
Infusion intermediate receptacle 3 and the N2Gas intermediate receptacle 4 is respectively arranged with constant-flux pump 1, during the constant-flux pump 1 is used for by corresponding to
Between fluid in container the heterogeneous core model 9 is inputted by the six-way valve 7.
Preferably, the crude oil intermediate receptacle 2, the N2In gas intermediate receptacle 4 and the foaming agent intermediate receptacle 3
Piston is provided with, piston can be promoted mobile for the constant-flux pump 1 being connected with each intermediate receptacle so that the fluid in container enters
The heterogeneous core model 9.
In the specific implementation, each sampler 10 includes stainless steel casing and clear glass inner bag, the both ends of sampler 10
Be respectively arranged with the inlet and liquid outlet being connected with clear glass inner bag, the inlet by pipeline with it is described heterogeneous
Corresponding sample tap 8 connects in core model 9, and the liquid outlet is connected with valve.
In order to control the pressure that fluid inputs, described N2It is gas intermediate receptacle 4, the foaming agent intermediate receptacle 3, described
Crude oil intermediate receptacle 2 and the N2Pressure gauge P is respectively connected with gas cylinder 13.
In order to make foaming agent fully bubble, it is provided between the foaming agent intermediate receptacle 3 and the input valve 7
Foam maker 6.
Also, in order to control the input condition of fluid, the N2Set between gas interstitial volume 4 and the input valve 7
It is equipped with gas flowmeter 5.
In such scheme, the quartz sand of the different permeabilities of filling in heterogeneous core model 9, side is provided with equal intervals
Sample tap 8, each sample tap 8 connect corresponding sampler 10, for collecting the core fluids of the opening position, recycle efficient liquid
Phase chromatography (High Performance Liquid Chromatography, HPLC) enters to the solution example in sampler 10
The detection of row foaming agent valid density, the foaming agent solution of corresponding valid density is prepared, evaluated by paddling process in different oil-containings
The foamability of foaming agent solution under the conditions of saturation degree, and then evaluate the foam Regenerated energy in inhomogeneous formation displacement process
Power.Heterogeneous core model 9 one terminates six-way valve 7, is divided by constant-flux pump 1 by intermediate receptacle 2, intermediate receptacle 3, intermediate receptacle 4
Saturation water, saturated oils and progress foam flooding not into heterogeneous core, the heterogeneous core other end is back-pressure valve 11 and output
Liquid 12.Crude oil intermediate receptacle 2, foaming agent intermediate receptacle 3 and N2Piston, volume 1L, phase are provided with gas intermediate receptacle 4
Piston can be promoted mobile for the constant-flux pump 1 of connection so that fluid enters in heterogeneous core model 9.Heterogeneous core model 9
It is connected including being provided with some sample tap 8, sample taps 8 at equal intervals on a side with the rock core in heterogeneous core model 9,
Each sample tap 8 is respectively connected with sampler 10 by the pipeline with valve.
Sampler 10 include columnar stainless steel casing and clear glass inner bag, the both ends of sampler 10 are respectively arranged with
The inlet and liquid outlet being connected with clear glass inner bag, inlet are connected with heterogeneous core sample tap 8 by pipeline, gone out
Liquid mouth one end is connected with valve.Crude oil intermediate receptacle 2, foaming agent intermediate receptacle 3, N2Gas intermediate receptacle 4 and N2On gas cylinder 13
It is respectively connected with pressure gauge, pressure gage measuring range 16MPa.
Fig. 2 is the application of the evaluating apparatus of foam power of regeneration in heterogeneous core displacement process provided by the utility model
The flow chart of embodiment of the method one, as shown in Fig. 2 this method is mainly applied in the heterogeneous core displacement process shown in Fig. 1
In the evaluating apparatus of middle foam power of regeneration, the specific implementation step of this method includes：
Step 1, the heterogeneous core in heterogeneous core model fully dried, used respectively under two kinds of scanning voltages
CT scanner is scanned to dry rock core, obtain two kinds of energy under the heterogeneous core CT values, writing scan position with sweep
Retouch condition.
In this step, rock core to be evaluated is inserted into heterogeneous core model in advance and dried, then according to pre-
If two voltages under carry out CT scan, such as：Dry rock core is swept under two kinds of scanning voltages of 60kV and 100kV respectively
Retouch, obtain the CT values of dry rock core under two kinds of energy, writing scan position and the condition of scanning.
Step 2, after back pressure is set, by saturation sodium bromide solution after the rock core vacuumizing of heterogeneous core model, with step
Under rapid 1 identical two kinds of scanning voltages, the condition of scanning and scan positions, heterogeneous core is scanned using CT scanner,
Obtain the heterogeneous core CT values of fully saturated sodium bromide solution under two kinds of energy.
In this step, back pressure pressure can be configured, in a kind of concrete implementation mode, can be set and 2MPa is set
Back pressure after, by saturation sodium bromide solution after the rock core vacuumizing of heterogeneous core model 9, sodium bromide solution concentration is 6wt%,
Then reuse CT scanner, with step (1) identical two kinds of scanning voltages, the condition of scanning and scan positions, to non-
Homogeneous rock core is scanned, and obtains the rock core CT values of fully saturated sodium bromide solution under two kinds of energy.
Step 3, the heterogeneous core saturation crude oil by crude oil intermediate receptacle into the heterogeneous core model,
Until the sodium bromide solution in the heterogeneous core by mother oil displacement to fettering water state.
Step 4, by N2N in gas intermediate receptacle and foaming agent intermediate receptacle2Gas and foaming agent solution pass through foam
Generator produces foam, and caused foam is injected into the heterogeneous core, and electric with the two kinds of scannings of step 1 identical
Under pressure, the condition of scanning and scan position, heterogeneous core is scanned using CT scanner, foam under two kinds of energy is obtained and oozes
The CT values of the heterogeneous core during stream.
In this step, N2Gas produces foam with foaming agent solution by foam maker 6, and caused foam is noted
Enter in heterogeneous core model 9, speed is pumped into by the control foaming agent solution of constant-flux pump 1, passes through gas flowmeter 5 and controls N2
The flow velocity of gas, the gas liquid ratio for making injection foam are 2:1, then with two kinds of scanning voltages of step 1 identical, the condition of scanning and
Under scan position, heterogeneous core is scanned, obtains the heterogeneous core CT values during liquid foams drainage under two kinds of energy.
Step 5, all sample taps for opening the heterogeneous core model, allow solution to flow into corresponding sampler.
Step 6, the foaming agent concentration using the solution in each sampler of high performance liquid chromatography detection acquisition.
In this step, the valve before sampler 10 is closed, the solution in sampler 10 is poured into sample bottle, waits to bubble
After agent solution separates with crude oil, the foaming agent concentration of fluid in sampler 10 is detected with high performance liquid chromatography (HPLC).
Step 7, the CT values using the heterogeneous core obtained in step 1, step 2, step 4, and be respectively adopted oil,
The saturation degree formula of gas and water calculate the heterogeneous core saturation degree.
Step 8, obtained oil, gas and water saturation degree are analyzed, the ratio between gas-liquid saturation degree is obtained, if the gas-liquid is satisfied
With degree the ratio between be less than 1:The ratio between 1 or the gas-liquid saturation degree are more than 5:1, it is determined that the heterogeneous core can not form stabilization
Foam, foam power of regeneration is low in heterogeneous core displacement process.
In this step, three-phase saturation is analyzed, if the ratio between gas-liquid saturation degree is less than 1:1 or more than 5:1,
Stable foam can not be formed by being considered as, and foam power of regeneration is very poor in heterogeneous core displacement process, completes heterogeneous to this
The evaluation of foam power of regeneration in rock core (namely heterogeneous core) displacement process.
The evaluation method of foam power of regeneration, same by CT dual intensities in the heterogeneous core displacement process that the present embodiment provides
Walk scanning method and obtain three-phase fluid saturation degree in inhomogeneous formation displacement process, and high performance liquid chromatography can be utilized to taking
Solution example in sample device carries out the detection of foaming agent valid density, the foaming agent solution of corresponding valid density is prepared, by stirring
The foamability of foaming agent solution of the mix process evaluation under the conditions of different oil saturations, and then evaluate in inhomogeneous formation displacement
During foam power of regeneration.Regeneration in the case of fluid saturation in considering stratum to foam diverse location at different moments
Ability is evaluated, not using numerical simulation, it is assumed that and it is less, can real reaction experiment actual value.
Fig. 3 is the application of the evaluating apparatus of foam power of regeneration in heterogeneous core displacement process provided by the utility model
The flow chart of embodiment of the method two.As shown in figure 3, on the basis of previous embodiment one, if the ratio between gas-liquid saturation degree is 1:1
With 5:Between 1, then also need to continue to analyze and process, i.e., this method is further comprising the steps of：
If the ratio between step 9, described gas-liquid saturation degree are 1:1 and 5:Between 1, then detected and sampled by high performance liquid chromatography
Foaming agent concentration in device obtained by fluid, foaming agent solution is configured, and corresponding saturation degree is added in the foaming agent solution
It is stirred foaming after crude oil again, foam regenerative process under simulation stratum condition.
Step 10, with step 1 identical two kinds of scanning voltages, conditions of scanning, in the difference of heterogeneous core displacement
Rock core is scanned using CT scanner at moment and diverse location, obtains the heterogeneous core CT values, and using oil,
The saturation degree formula of gas and water calculates the heterogeneous core corresponding saturation degree in each condition.
Step 11, in the heterogeneous core displacement at different moments to the fluid sampling in rock core, obtain heterogeneous
The foaming agent activity of diverse location at different moments during rock core displacement.
In the above two embodiments, concentration range 4wt%~8wt% of the sodium bromide solution.
In the above two embodiments, the CT values according to heterogeneous core are required to, and are respectively adopted oily, gas and water full
The saturation degree of the heterogeneous core is calculated with degree formula, this programme provides a kind of specific calculation：
Oil, the saturation computation formula of gas and water are as follows：
The saturation degree formula of water is：
Oil saturation degree formula be：
The saturation degree formula of gas：
Wherein, SgIt is the saturation degree of gas；SwIt is the saturation degree of water；SoIt is the saturation degree of oil；CTE1dryIt is E1Done under energy
The CT values of rock core；CTE2dryIt is E2The CT values of dry rock core under energy；CTE1waterwetIt is E1The rock CT of fully saturated water under energy
Value；CTE2waterwetIt is E2The rock CT values of fully saturated water under energy；CTE1gIt is E1The CT values CT of gas under energyE2gIt is E2Energy
The CT values of the lower gas of amount；CTE1wIt is E1The CT values of water under energy；CTE2wIt is E2The CT values of water under energy；CTE1oIt is E1It is oily under energy
CT values；CTE2oIt is E2Oily CT values under energy；And above-mentioned formula meets Sg+Sw+So=1.
Heterogeneous core corresponding saturation degree in each condition can be calculated by above-mentioned formula, then to heterogeneous
The foam power of regeneration of rock core is evaluated.
The method that above-described embodiment one and embodiment two carry, heterogeneous core displacement is obtained by CT dual intensity synchronous scannings method
During three-phase fluid saturation degree, only gas phase saturation within the specific limits, be only possible in the presence of foaming agent formed bubble
Foam, and the inspection of foaming agent valid density can be carried out to the solution example in sampler using high performance liquid chromatography (HPLC)
Survey, prepare the foaming agent solution of corresponding valid density, the foaming agent under the conditions of different oil saturations is evaluated by paddling process
The foamability of solution, and then the foam power of regeneration in inhomogeneous formation displacement process is evaluated, consider in rock core displacement process
Influence of the saturation degree of middle fluid to foaming agent performance and foam power of regeneration, evaluation that can be authentic and valid is in rock core displacement process
The power of regeneration of middle foam.
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 related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, execution the step of including above-mentioned each method embodiment；And foregoing storage medium includes：Read-only storage (English
Text：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 (7)
- A kind of 1. evaluating apparatus of foam power of regeneration in heterogeneous core displacement process, it is characterised in that including：Heterogeneous core model, the heterogeneous core model side offer equidistant multiple sample taps, each sample tap It is connected with a sampler；The heterogeneous core of different permeabilities can be filled inside the heterogeneous core model；Each sampling Device is used for the core fluids for collecting corresponding sample tap position；Described heterogeneous core model one end is connected with input valve, and the input valve other end connects respectively to be held among crude oil Device, foaming agent intermediate receptacle and N2Gas intermediate receptacle；The other end connection back-pressure valve of the heterogeneous core model, described time Pressure valve respectively with N2Gas cylinder connects with output liquid container；CT scanner, the CT scanner are connected with the heterogeneous core model, for scanning the heterogeneous core not With the CT values under voltage and different condition.
- 2. device according to claim 1, it is characterised in that the input valve is six-way valve, is held among the crude oil Device, the foaming agent intermediate receptacle and the N2Gas intermediate receptacle is respectively arranged with constant-flux pump, and the constant-flux pump is used for will be right Fluid in the intermediate receptacle answered inputs the heterogeneous core model by the six-way valve.
- 3. device according to claim 2, it is characterised in that the crude oil intermediate receptacle, the N2 gases intermediate receptacle Piston is provided with the foaming agent intermediate receptacle, the constant-flux pump being connected with each intermediate receptacle can promote piston to move So that the fluid in container enters the heterogeneous core model.
- 4. according to the device described in any one of claims 1 to 3, it is characterised in that each sampler include stainless steel casing and Clear glass inner bag, the sampler both ends are respectively arranged with the inlet and liquid outlet being connected with clear glass inner bag, institute State inlet to connect by pipeline sample tap corresponding with the heterogeneous core model, the liquid outlet is connected with valve.
- 5. according to the device described in any one of claims 1 to 3, it is characterised in that described N2Gas intermediate receptacle, described Infusion intermediate receptacle, the crude oil intermediate receptacle and the N2Pressure gauge is respectively connected with gas cylinder.
- 6. according to the device described in any one of claims 1 to 3, it is characterised in that the foaming agent intermediate receptacle with it is described defeated Enter and be provided with foam maker between valve.
- 7. according to the device described in any one of claims 1 to 3, it is characterised in that the N2Gas interstitial volume and the input Gas flowmeter is provided between valve.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613991A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | The evaluation method and device of foam power of regeneration in heterogeneous core displacement process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613991A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | The evaluation method and device of foam power of regeneration in heterogeneous core displacement process |
| CN108613991B (en) * | 2016-12-13 | 2023-11-28 | 中国石油天然气股份有限公司 | Method and device for evaluating foam regeneration capability in heterogeneous rock core displacement process |
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