CN107956459A - Foam injection device and using method and mounting method thereof - Google Patents
Foam injection device and using method and mounting method thereof Download PDFInfo
- Publication number
- CN107956459A CN107956459A CN201610909452.0A CN201610909452A CN107956459A CN 107956459 A CN107956459 A CN 107956459A CN 201610909452 A CN201610909452 A CN 201610909452A CN 107956459 A CN107956459 A CN 107956459A
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- Prior art keywords
- foam
- air inlet
- oil pipe
- pipe
- inlet pipe
- Prior art date
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- 239000006260 foam Substances 0.000 title claims abstract description 138
- 239000007924 injection Substances 0.000 title claims abstract description 59
- 238000002347 injection Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000004088 foaming agent Substances 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000008676 import Effects 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000012797 qualification Methods 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000003208 petroleum Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 abstract 6
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 239000010779 crude oil Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 239000008258 liquid foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000004391 petroleum recovery Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a foam injection device and a using method and an installation method thereof, and belongs to the field of foam flooding in the petroleum industry. The device comprises: the oil pipe, the air inlet pipe located inside the oil pipe, the annular space formed between the inner wall of the oil pipe and the air inlet pipe, the liquid inlet communicated with the oil pipe, the foam generator connected to the lower portion of the air inlet pipe and the coupling connected to the lower portion of the foam generator. The using method comprises the following steps: air is injected into the inlet manifold and frother liquid is injected into the annular space. The installation method comprises the following steps: and sequentially connecting the foam generator and the coupling to the air inlet pipe, and putting the air inlet pipe and the connecting piece thereof into the oil pipe. According to the invention, air and the foaming agent are injected in two different channels, so that the problems of uneven foam distribution and severe cavitation on an oil pipe column are solved, and the crude oil recovery rate is improved.
Description
Technical field
The present invention relates to petroleum industry foam flooding field, more particularly to a kind of foam injection device and its application method and peace
Dress method.
Background technology
Petroleum industry foam flooding and foam block up tune, are rheological characteristic and low-density using foam uniqueness, realize effective displacement of reservoir oil
It is to improve effect of reservoir development, improve height so as to improve the oil production and recovery ratio of individual well and whole oil reservoir with regulated macroporous road
One of technological means of aqueous oil deposil erude petroleum recovery ratio.Therefore, how to be preferably to realize foam flooding by foam injection stratum
The important prerequisite of effect.
Foam injection device of the prior art is mainly air-tightness oil pipe, and foam injection technology mainly has two kinds：One
Kind it is that after air, each free power-equipment of foaming agent converge in foam maker by independent ball-and-seat, the foam of generation is led to
Cross air-tightness oil pipe and be directly injected into stratum.Another kind is that air and foaming agent solution alternately inject stratum by air-tightness oil pipe,
Mix and blister on stratum.
In the implementation of the present invention, inventor has found that the prior art has at least the following problems：
The foam of generation is uneven, poor controllability, and the foam produced needs to inject stratum by air-tightness oil pipe, right
Oil pipe column has serious cavitation erosion；And injection string will select expensive airtight sealed tube, add construction cost.
The content of the invention
In order to solve the problems, such as prior art foam skewness, have serious cavitation erosion to oil pipe column, the present invention is implemented
Example provides a kind of foam injection device and its usability methods and installation method.The technical solution is as follows：
First aspect, there is provided a kind of foam injection device, described device include：Oil pipe, the air inlet inside oil pipe
Pipe, tube inner wall and the annular space formed between air inlet pipe, the inlet connected with oil pipe, the foam for being connected to air inlet pipe lower part
Generator and the box cupling for being connected to foam maker lower part；
The foam maker include positioned at both ends inlet and outlet and on the foam maker wall into
Fluid apertures；
The box cupling is the ring of inner hollow, its outside diameter is engaged with the pipe aperture, its internal diameter and the bubble
Foam generator outside diameter is engaged；
The import of the foam maker is connected with the air inlet pipe, and the outlet of the foam maker connects with the box cupling
It is logical；
The inlet opening is axially evenly distributed on foam maker wall, its quantity is two or more.
Preferably, the inlet is the import that the T-shaped three-way connection being connected on oil pipe is formed.
Preferably, the air inlet pipe is coiled tubing.
Preferably, the air inlet pipe is non junction steel pipe.
Preferably, the foam injection device further includes air inlet tube injection head.
Preferably, the air inlet tube injection head is coiled tubing injection head.
Preferably, the air inlet pipe is connected with the foam maker by tool connector.
Preferably, the length of the foam maker is 0.8-1.2m.
Preferably, the inlet opening aperture on the foam maker wall is 1-3cm.
Preferably, the foam maker is connected through a screw thread with the box cupling.
Preferably, the oil pipe lower part connection horn mouth.
Preferably, there are sealing ring and the o-ring groove positioned at sealing ring lower potion in the box cupling.
Second aspect, there is provided a kind of application method of foam injection device described above, the described method includes：By sky
Gas injects air inlet pipe, and it is empty that foaming agent liquid is injected between oil pipe and air inlet pipe to the annular formed by the inlet on oil pipe
Between.The flow of the injection air is more than the flow of injection foaming agent liquid.
Preferably, the pressure of the injection air is less than the pressure of injection foaming agent liquid.
Preferably, the air injects air inlet pipe by air compressor.
Preferably, the foaming agent is surfactant.
The third aspect, there is provided a kind of installation method of foam injection device described above, the described method includes：First will
Oil pipe is reduced to predetermined stratum, and then T-shaped Highpressure Tee connector and air inlet tube injection head are connected on well head four-way；Then
Air compressor is connected to air inlet pipe joint；Then foam maker and box cupling are consecutively connected in air inlet pipe, and will
Air inlet pipe and its connector is lowered into oil pipe.
Preferably, before oil pipe is reduced to predetermined stratum, former well casing column is taken out in lifting, and pressure testing inspection is carried out to oil pipe
Test.
Preferably, oil pipe is reduced at its topmost 2-5 meters of horn mouth preset distance stratum.
Preferably, after T-shaped Highpressure Tee connector is connected on well head four-way, to T-shaped Highpressure Tee connector into
Liquid mouth carries out pressure testing, is not leaked for qualification with not piercing.
Preferably, air inlet pipe is lowered into oil pipe makes box cupling be reduced on oil pipe horn mouth at 5 meters.
The beneficial effect that technical solution provided in an embodiment of the present invention is brought is：
By using oil pipe and the air inlet pipe inside oil pipe by air and foaming agent liquid be divided into two it is different logical
Road injects so that foam improves the performance for injecting foam from the influence of tubing string shear action；Meanwhile foaming agent liquid leads to
Equally distributed hole on foam maker to be crossed to enter in foam bubbler so that it is uniform with the foam that air produces, so that
Improve oil recovery factor；Also, foam produces in foam maker, reduce cavitation effect of the foam to oil pipe column；This
Invention use air inlet pipe be non junction steel pipe, it is ensured that gas in pit shaft in will not reveal, improve construction safety；This
Invention reduces construction cost using plain tubing.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is foam injection device structure diagram provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of foam maker in foam injection device provided in an embodiment of the present invention.
Wherein, it is as follows to each label declaration in attached drawing：
1st, air inlet pipe；2nd, air inlet tube injection head；3rd, T-shaped Highpressure Tee connector；31st, inlet；4th, well head four-way；5th, cover
Pipe；6th, oil pipe；7th, tool connector；8th, foam maker；81st, import；82nd, inlet opening；83rd, export；9th, box cupling；10th, loudspeaker
Mouthful；X, annular space.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
As shown in Figure 1, Fig. 1 is foam injection device structure diagram provided in an embodiment of the present invention.It includes：Oil pipe 6,
Air inlet pipe 1,6 inner wall of oil pipe and the annular space X formed between air inlet pipe 1, the inlet connected with oil pipe inside oil pipe
31st, it is connected to the foam maker 8 of 1 lower part of air inlet pipe and is connected to the box cupling 9 of 8 lower part of foam maker；Wherein, the bubble
Foam generator 8 includes the import 81 and outlet 83 and the inlet opening 82 on 8 wall of foam maker positioned at both ends；Its
In, box cupling 9 is the ring of inner hollow, its outside diameter is engaged with 6 internal diameter of oil pipe, its internal diameter and the foam maker
8 outside diameters are engaged；Wherein, the import 81 of the foam maker 8 is connected with the air inlet pipe 1, and the foam maker 8 goes out
Mouth 83 is connected with the box cupling 9.
By injecting air into the air inlet pipe 1 being located inside oil pipe, air enters along air inlet pipe 1 to be steeped the embodiment of the present invention
Foam generator 8, injects between 6 inner wall of oil pipe and air inlet pipe 1 what is formed by foaming agent liquid by the inlet 31 on oil pipe
Annular space X, then foaming agent liquid foam maker 8 is entered by inlet opening 82 on 8 wall of foam maker, air passes through
Contacted during foam maker 8 with entering the foaming agent liquid of foam maker 8, the flow for injecting air is more than injection foaming agent liquid
The flow of body, the mobilization force of air makes it produce foam in foam maker with foaming agent liquid, in the air subsequently entered
Impetus under, the foam of generation enters the box cupling 9 being connected with foam maker, then the horn mouth by 6 lower part of oil pipe
10 and inject into well.Injected it is achieved thereby that air and bubbler liquid are divided into two different passages so that foam from
The influence of tubing string shear action, improves the performance of injection foam；And foam is produced in foam maker, is reduced
Cavitation effect of the foam to oil pipe column.
It will be appreciated by persons skilled in the art that need to meet that the internal diameter of oil pipe 6 is more than the outside diameter ability shape of air inlet pipe 1
Into the annular space X in embodiments thereof described above, correspondingly, being also required to meet that the internal diameter of oil pipe 6 is more than the outer of foam maker 8
Footpath.This is the common knowledge of this area, and the embodiment of the present invention is not elaborated herein.
In embodiment described above, the air injects air inlet pipe 1 by air compressor, and the injection is empty
The pressure of gas is less than the pressure of injection foaming agent liquid.So that foaming agent liquid is more than air to the pressure of 8 wall of foam maker
To the pressure of 8 wall of foam maker, sent out so that foaming agent liquid can enter foam by the inlet opening 82 on foam maker 8
Raw device 8, and air is easily detected by the hole and flows out foam maker 8, so that air is sent out with foaming agent liquid in foam
Foam is produced in raw device 8.
The foaming agent is surfactant, is preferably neopelex, foaming agent concentration is preferably its quality
Percentage is 0.3-1.0%, and the foam volume under this concentration is 5.0-5.3 times of original solution volume, half foam life period 75-
90min。
In embodiment described above, foam injection device further includes air inlet tube injection head 2, and air inlet tube injection head 2 is logical
Flanged joint is crossed to well head four-way 4, so that 1 and its connector of air inlet pipe can be reduced by air inlet tube injection head 2
Enter in well.The inlet 31 is the import that the T-shaped three-way connection being connected on oil pipe 6 is formed, and is connected by flange
It is connected on well head four-way 4 so that foaming agent liquid injects oily cylinder by inlet 31.
The air inlet pipe 1 be preferably coiled tubing, more preferably non junction steel pipe, it is ensured that gas in pit shaft in not
It can reveal, improve construction safety.
The air inlet pipe 1 can be connected with the foam maker 8 by tool connector 7.The embodiment of the present invention is not to work
Tool connector 7 makes specific restriction, for example, air inlet pipe 1 can also pass through silk with foam maker 8 by flanged joint
Button connection.
The foam maker 8 can be connected through a screw thread with the box cupling 9, and the box cupling 9 is the ring of inner hollow,
Its outside diameter is engaged with 6 internal diameter of oil pipe, its internal diameter is engaged with 8 outside diameter of foam maker, and in the box cupling 9
There are sealing ring and the o-ring groove positioned at sealing ring lower potion, foaming agent liquid can be isolated in annular space X, ensured
Infusion liquid will not be flowed into well by box cupling 9, so that foaming agent liquid can only pass through foam maker 8 and air shape
It could enter box cupling 9 after into foam to enter back into well.
In embodiment described above, the length of the foam maker 8 is preferably 0.8-1.2m, but the present invention is implemented
Example does not make specific restriction to the length of foam maker 8, but if its length is long, foam can be more in moving process
It is subject to the resistance from 8 tube wall of foam maker.
In embodiment described above, the inlet opening 82 is axial to be evenly distributed on 8 wall of foam maker, its quantity
For two or more so that the generation of foam is evenly.As shown in Fig. 2, Fig. 2 is foam injection device provided in an embodiment of the present invention
The structure diagram of middle foam maker, the embodiment of the present invention are all uniformly covered with feed liquor with axial on 8 wall of foam maker, radial direction
Exemplified by hole 82, and 82 aperture of inlet opening on 8 wall of the foam maker is 1-3cm.But not device to hole of the embodiment of the present invention
Any specific restriction is made in quantity, shape, arrangement.
The embodiment of the present invention is installed and practical application：
Certain well group shares 6 mouthfuls of oil well, 1 mouthful of water injection well, the well group Produced Liquid moisture content 95.4%, day oil-producing 4.53t, water logging
Seriously, payzone oil recovery is 15.6%.Think that the well group also has larger remaining Exploitation Potential, which is carried out
Gas bubble blocks up tune construction.
Former well casing column is taken out in lifting, the oil pipe 6 of pressure testing qualification is reduced to predetermined stratum from casing 5,6 lower part of oil pipe is
Horn mouth 10, horn mouth 10 away from this layer of topmost 5m at.
T-shaped Highpressure Tee connector 3 and air inlet tube injection head 2 are connected on well head four-way 4 by flange；To T-shaped high pressure
The inlet 31 of three-way connection 3 carries out pressure testing, is not leaked for qualification with not piercing；Air compressor is connected to 1 joint of air inlet pipe；
Foam maker 8 is threaded into box cupling 9, foam maker 8 is connected in air inlet pipe 1 by tool connector 7,
And its 1 and its connector of air inlet pipe is lowered into oil pipe with injection car, make box cupling 9 at 5 meters on oil pipe horn mouth 10.
The neopelex solution that the mass percent of situ configuration is 0.5% is injected from inlet 31, it is empty
Gas is injected from air inlet pipe 1, is 4 × 10 by the volume of air flow before air compressor4m3/ d, foaming agent injection feed liquor
The volume flow of mouth is 40m3/d。
The accumulative injection air 326593m of foam profile construction3, foaming agent 3592m3.After half a year is implemented in measure, which adopts
The moisture content for going out liquid is 68.2%, and moisture content declines 27.2%；Day oil-producing 12.52t, improve oil recovery factor.
To sum up, the beneficial effect that technical solution provided in an embodiment of the present invention is brought is：
By using oil pipe and the air inlet pipe inside oil pipe by air and foaming agent liquid be divided into two it is different logical
Road injects so that foam improves the performance for injecting foam from the influence of tubing string shear action；Meanwhile foaming agent liquid leads to
Equally distributed hole on foam maker to be crossed to enter in foam bubbler so that it is uniform with the foam that air produces, so that
Improve oil recovery factor；Also, foam produces in foam maker, reduce cavitation effect of the foam to oil pipe column；This
Invention use air inlet pipe be non junction steel pipe, it is ensured that gas in pit shaft in will not reveal, improve construction safety；This
Invention reduces construction cost using plain tubing.
Above-mentioned all optional technical solutions, can use any combination to form the alternative embodiment of the disclosure, herein no longer
Repeat one by one.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (21)
1. a kind of foam injection device, it is characterised in that described device includes：Oil pipe (6), the air inlet pipe inside oil pipe
(1), the annular space (X) that is formed between oil pipe (6) inner wall and air inlet pipe (1), the inlet (31) connected with oil pipe, be connected into
The foam maker (8) of tracheae (1) lower part and the box cupling (9) for being connected to foam maker (8) lower part；
The foam maker (8) is included positioned at the import (81) and outlet (83) at both ends and positioned at the foam maker
(8) inlet opening on wall (82)；
The box cupling (9) is the ring of inner hollow, its outside diameter is engaged with the oil pipe (6) internal diameter, its internal diameter with it is described
Foam maker (8) outside diameter is engaged；
The import (81) of the foam maker (8) is connected with the air inlet pipe (1), the outlet of the foam maker (8)
(83) connected with the box cupling (9)；
The inlet opening (82) is axially evenly distributed on foam maker (8) wall, its quantity is two or more.
2. foam injection device according to claim 1, it is characterised in that the inlet (31) is to be connected to oil pipe
(6) import that the T-shaped three-way connection on is formed.
3. foam injection device according to claim 1, it is characterised in that the air inlet pipe (1) is coiled tubing.
4. foam injection device according to claim 1, it is characterised in that the air inlet pipe (1) is non junction steel pipe.
5. foam injection device according to claim 1, it is characterised in that it further includes air inlet tube injection head (2).
6. foam injection device according to claim 5, it is characterised in that the air inlet tube injection head (2) is continuous oil
Tube injection head.
7. foam injection device according to claim 1, it is characterised in that the air inlet pipe (1) occurs with the foam
Device (8) is connected by tool connector (7).
8. foam injection device according to claim 1, it is characterised in that the length of the foam maker (8) is
0.8-1.2m。
9. foam injection device according to claim 1, it is characterised in that the feed liquor on foam maker (8) wall
Hole (82) aperture is 1-3cm.
10. foam injection device according to claim 1, it is characterised in that the foam maker (8) and the box cupling
(9) it is connected through a screw thread.
11. foam injection device according to claim 1, it is characterised in that oil pipe (6) lower part connects horn mouth
(10)。
12. foam injection device according to claim 1, it is characterised in that have sealing ring in the box cupling (9) and be located at
The o-ring groove of sealing ring lower potion.
A kind of 13. application method of claim 1-13 any one of them foam injection devices, it is characterised in that the method
Including：Inject air into air inlet pipe (1), by foaming agent liquid by inlet (31) on oil pipe inject oil pipe (6) with
The annular space (X) formed between air inlet pipe (1).
14. application method according to claim 14, it is characterised in that the pressure of the injection air is less than injection and blisters
The pressure of agent liquid.
15. application method according to claim 14, it is characterised in that the air injects air inlet by air compressor
Manage (1).
16. application method according to claim 14, it is characterised in that the foaming agent is surfactant.
A kind of 17. installation method of claim 1-13 any one of them foam injection devices, it is characterised in that the method
Including：Oil pipe (6) is first reduced to predetermined stratum, then by T-shaped Highpressure Tee connector (3) and air inlet tube injection head (2) even
It is connected on well head four-way (4)；Then air compressor is connected to air inlet pipe (1) joint；Then by foam maker (8) and
Box cupling (9) is consecutively connected in air inlet pipe (1), and air inlet pipe (1) and its connector is lowered into oil pipe (6).
18. installation method according to claim 18, it is characterised in that before oil pipe (6) is reduced to predetermined stratum,
Former well casing column is taken out in lifting, and pressure testing inspection is carried out to oil pipe (6).
19. installation method according to claim 18, it is characterised in that by oil pipe (6) be reduced to its horn mouth (10) away from
At predetermined 2-5 meters of stratum topmost.
20. installation method according to claim 18, it is characterised in that T-shaped Highpressure Tee connector (3) is being connected to well
After on mouth four-way (4), pressure testing is carried out to the inlet (31) of T-shaped Highpressure Tee connector (3), is not leaked for qualification with not piercing.
21. installation method according to claim 18, it is characterised in that air inlet pipe (1), which is lowered into oil pipe (6), to be made
Box cupling (9) is reduced at upper 5 meters of oil pipe (6) horn mouth (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909452.0A CN107956459B (en) | 2016-10-18 | 2016-10-18 | Foam injection device and using method and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909452.0A CN107956459B (en) | 2016-10-18 | 2016-10-18 | Foam injection device and using method and mounting method thereof |
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| CN107956459A true CN107956459A (en) | 2018-04-24 |
| CN107956459B CN107956459B (en) | 2021-01-01 |
Family
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109252838A (en) * | 2018-09-26 | 2019-01-22 | 西南石油大学 | A kind of U-shaped foam ring generating device and method |
| CN110259420A (en) * | 2019-06-18 | 2019-09-20 | 东北石油大学 | Dropping in and taking off type underground foam maker |
| CN112108028A (en) * | 2020-09-18 | 2020-12-22 | 中国石油天然气股份有限公司 | Bottom hole shearing foaming device for foam combined flooding |
| CN113484192A (en) * | 2021-09-06 | 2021-10-08 | 广汉市福客科技有限公司 | Evaluation device and evaluation method of sinking type delayed foaming agent |
| CN113738321A (en) * | 2021-08-30 | 2021-12-03 | 西南石油大学 | Foam generating device for high-temperature-resistant high-pressure micro-reaction displacement experiment |
| US11846154B2 (en) | 2020-12-11 | 2023-12-19 | Heartland Revitalization Services Inc. | Portable foam injection system |
| CN118391004A (en) * | 2024-05-29 | 2024-07-26 | 东北石油大学三亚海洋油气研究院 | Foam injection device for crude oil recovery |
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