CN109224891A - The method of the quick dissolved gas of industrial application grade - Google Patents
The method of the quick dissolved gas of industrial application grade Download PDFInfo
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- CN109224891A CN109224891A CN201811293515.XA CN201811293515A CN109224891A CN 109224891 A CN109224891 A CN 109224891A CN 201811293515 A CN201811293515 A CN 201811293515A CN 109224891 A CN109224891 A CN 109224891A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/02—Methods
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/20—Dissolving using flow mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3131—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
- B01F25/31322—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices used simultaneously
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/502—Vehicle-mounted mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/181—Preventing generation of dust or dirt; Sieves; Filters
- B01F35/189—Venting, degassing or ventilating of gases, fumes or toxic vapours during mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The present invention provides a kind of methods of quick dissolved gas of industrial application grade, this method comprises: injecting water in the duct；Then gas is injected into the pipeline of water filling, by the size Control of the blistering of the gas of injection at 400 μm or less.The present invention makes to inject the state that water has reached saturation dissolved gas before reaching wellhead assembly.
Description
Technical field
The present invention relates to oil field development fields, and in particular to a kind of method of the quick dissolved gas of industrial application grade.
Background technique
In field of oil development, the waterflooding extraction of low-permeability oil deposit faces many problems, wherein injection water be difficult to enter it is micro-
Fine pore, swept volume is small, and recovery percent of reserves is not high.A kind of effective method is gas injection development, low using gas flow resistance
Feature enters gas in fine pore, improves recovery percent of reserves, but gas drive mode frequently encounters the feelings along hypertonic channel channelling
Condition, so that the deterioration of efficiency of the gas displacement of reservoir oil.
In conjunction with the advantages of two ways, i.e., a large amount of dissolved gas in injection water make it in flow event, with pressure
Gradually decrease, solution gas is gradually precipitated, and realizes that the common displacement of reservoir oil of air water simultaneously improves oil displacement efficiency.The characteristics of such mode is to infuse
Enter the timing of operating pressure one between well and producing well, dissolves the injection water of bulk gas along biggish channel seepage flow, with
The reduction of seepage pressure, the bubble being precipitated in water generate Jamin effect, limit percolation flow velocity of the injection water in larger passage,
" forced " injection water is flowed into lesser channel.As seepage pressure continuously reduces, this " forced " process is recurred, and is compeled
Make to inject water seepage flow constantly into smaller hole, the swept volume of injection water is expanded, to improve oil displacement efficiency.It is this
Method has been verified in laboratory in theoretical principle, theoretical feasible, but in industrial application, it at present but can not be fast by gas
Speed is dissolved into the injection water of flowing.
In conclusion following problems exist in the prior art: at present in industrial application, can not quickly be dissolved into gas
In the injection water of flowing.
Summary of the invention
The present invention provides a kind of method of quick dissolved gas of industrial application grade, to solve at present in industrial application, nothing
Gas is quickly dissolved into the problems in the injection water of flowing by method.
For this purpose, the present invention proposes a kind of quick dissolved gas method of industrial application grade, also referred to as industrial application grade dissolved gas
Method or gas dissolving method, this method comprises:
Water is injected in the duct；
Then gas is injected into the pipeline of water filling, by the size Control of the blistering of the gas of injection at 400 μm hereinafter, note
The pressure for entering gas is greater than the manifold pressure 0.2--0.5MPa of water filling.
The quick dissolved gas method of industrial application grade further include: arrange the undissolved gas in the pipeline of water filling
Out.
The quick dissolved gas method of industrial application grade uses the quick dissolved gas device of industrial application grade, the industry
The quick dissolved gas device of application layer includes:
At least one Gas dissolving pipe, the Gas dissolving pipe are U-tube, and the Gas dissolving pipe includes: to be vertically arranged and be parallel to each other
First straight tube and second straight tube, and the top being connected between the top of first straight tube and the top of second straight tube
Bend pipe；First straight tube, top elbows are connected to the inside of second straight tube；First straight tube, top elbows and second are straight
Pipe is for accommodating the water of injection；
The top of the top elbows is equipped with fluting；
The Gas dissolving pipe further include:
Top transverse tube is connected on the top elbows；The top transverse tube is tubulose and is horizontally disposed with；The top
The inner cavity of transverse tube is connected to the fluting；
Plate with holes is covered on the fluting and is connected between top elbows and the top transverse tube；
The level sensor for monitoring plate with holes is arranged in the inner cavity of the top transverse tube；
The top of the top transverse tube is arranged in exhaust valve；
Gas injection pipeline is connected to the bottom of first straight tube and second straight tube；
Gas mixing device, the bottom positioned at first straight tube and the downstream positioned at gas injection pipeline, the gas mixing device included:
Filter disc, filter are equipped with multiple uniform holes, and filter aperture is 5 μm to 10 μm；
Waterflood-transmission line is connected to the bottom of first straight tube.
Further, the quick dissolved gas device of the industrial application grade includes: multiple is vertically arranged and sequentially connected
The floor projection of Gas dissolving pipe, multiple Gas dissolving pipes is S-type, the quick dissolved gas device of industrial application grade further include: be connected to
The bottom bend pipe of two neighboring Gas dissolving pipe bottom, the bottom bend pipe are connected between two neighboring Gas dissolving pipe.
Further, the quick dissolved gas device of the industrial application grade further include: gas pressurized device connects the note
Gas pipeline.
Further, the gas pressurized device includes: that sequentially connected gas injection fills, is pressurized pump group and air pump, described
Gas injection, which fills, connects the gas injection pipeline.
Further, the quick dissolved gas device of the industrial application grade connects to form S type, adjacent straight using nine straight tubes
500mm is divided between pipe.
Further, the gas pressurized device connects each Gas dissolving pipe, and each Gas dissolving pipe passes through a partial pressure dress respectively
It sets and is connected in parallel the gas pressurized device, the bleeder mechanism is gas pressure regulating valve.
Further, the quick dissolved gas device of the industrial application grade further include: signal transmission and control device, connection
Level sensor and exhaust valve.
Further, the quick dissolved gas device of the industrial application grade further include: skid platform, skid platform include fortune
Defeated trailer and the fixed rack being mounted on transport trailer, the Gas dissolving pipe, gas pressurized device and signal transmission and control dress
It sets and is arranged on fixed rack.
Further, the exhaust valve is solenoid valve.
Further, the eye diameter on the plate with holes is 1cm, is spaced 2cm.
The invention has the following advantages that
1. the quick dissolved gas device of industrial application grade, in Ground Application, linking is incorporated to original water filling process, make to inject
Water has reached the state of saturation dissolved gas before reaching wellhead assembly；
2. the device is laid out with skid, line member occupies little space, is readily transported, installs and manages；
3. the device implements automation control, convenient for operation.
Detailed description of the invention
Fig. 1 is the operation principle schematic diagram for the quick dissolution method that the present invention uses；
Fig. 2 is the operation principle schematic diagram of straight tube in the quick dissolution method of the invention used；
Fig. 3 is the operation principle schematic diagram of bend pipe in the quick dissolution method of the invention used；
Fig. 4 is the schematic view of the front view for the bend pipe that one embodiment of the invention uses；
Fig. 5 is the side structure schematic view for the bend pipe that one embodiment of the invention uses；
Fig. 6 is the schematic view of the front view for the S type Gas dissolving pipe that the present invention uses；
Fig. 7 is the overlooking structure diagram for the S type Gas dissolving pipe that the present invention uses；
Fig. 8 is the overall structure diagram for the quick dissolved gas device of industrial application grade that the present invention uses.
Drawing reference numeral explanation:
1, Gas dissolving pipe；11, top elbows；12, bottom bend pipe；13, pipeline interface；14, waterflood direction；15, straight tube；16,
Water discharging direction；17, waterflood-transmission line entrance；18, waterflood-transmission line exports；
20, top transverse tube；21, plate with holes (orifice plate)；22, level sensor；23, exhaust valve；30, bubble；40, method
It is blue；50, gas-liquid interface；
60, gas pressurized device；61, bleeder mechanism；70, signal transmission and control device；71, liquid level signal transmission line.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
It is bright.
The present invention be devised on the basis of analyzing gas solution rate influence factor micro-bubble generating means and
The calandria structure of dioptric type.Method And Principle is as follows:
Gas dissolving process is the contact surface occurred in gas and liquid, and gas molecule, which gradually dissolves, to be entered in fluid molecule
Portion.The speed of solution rate and the size of contact surface are related, and area is bigger, dissolve faster.
The gas of same volume is converted to bubble form, then bubble is smaller, and total bubble surface area is bigger, and surface area is with gas
1/3 power for steeping quantity is incremented by, and sees formula 1.
SR--- the surface area for the air pocket that a radius is R；
Snr--- the total surface area with the n minute bubbles that the isometric radius of air pocket is r；
Gas is allowed to enter injection water in the form of micro-bubble in the injection water of flowing using the principle, in flowing
Dissolution.According to the principle, as shown in Fig. 1, Fig. 6 and Fig. 7, the quick dissolved gas method of industrial application grade of the invention includes:
Water is injected in the duct；
Then inject gas into the pipeline of water filling, by the size Control of the blistering of the gas of injection at 400 μm hereinafter,
The pressure for injecting gas is greater than the manifold pressure 0.2--0.5MPa of water filling.
The quick dissolved gas device of industrial application grade of the invention includes:
At least one Gas dissolving pipe, the Gas dissolving pipe are U-tube, and the Gas dissolving pipe includes: to be vertically arranged and be parallel to each other
First straight tube and second straight tube, and the top being connected between the top of first straight tube and the top of second straight tube
Bend pipe；Top elbows can be to be arc-shaped or semicircle, and first straight tube, top elbows are connected to the inside of second straight tube；
It is, Gas dissolving pipe is made of straight pipe and bend loss, bend pipe can be connect with straight tube by flange 40, be readily disassembled installation；
Wherein gas mixing device is mounted in straight pipe；It is mounted with to stablize the components such as orifice plate, level sensor in bend loss；Straight tube, it is maximum
Pressure-resistant 50MPa, 100 DEG C of heatproof, anti-gas attack.Has the security performance guarantee of gas injection under industrial condition, straight tube both ends use
Flange form connection, convenient for assembling and transport；Bend pipe is consistent with the performance of straight tube, maximum pressure resistance 50MPa, and 100 DEG C of heatproof, anti-gas
Corrosion.The security performance guarantee for having gas injection under industrial condition；
As shown in Figure 4 and Figure 5, the top of the top elbows 11 is equipped with fluting；
The Gas dissolving pipe further include:
Top transverse tube 20 is connected on the top elbows 11；The top transverse tube 20 is tubulose and is horizontally disposed with；Institute
The inner cavity for stating top transverse tube is connected to the fluting；Top transverse tube 20, bottom and fluting are welded to connect；The length of top transverse tube
Greater than the length of fluting；The both ends of top transverse tube 20 have flange 40, for connecting；
Plate 21 with holes, also referred to as stable orifice plate or orifice plate, be covered on the fluting and be connected to top elbows 11 with
Between the top transverse tube 20；Orifice plate is screwed in inside transverse tube, detachable and interchangeable；The cell structure of orifice plate balances note
Enter water in flow at high speed, the more stable separation of gas is also beneficial to level sensor 22 by violent concussion of the gas at top
Accurate judgement liquid level；
The level sensor 22 for monitoring plate with holes is arranged in the inner cavity of the top transverse tube 20；It is put down in holes
Plate 21 (orifice plate) two sides are oppositely arranged supersonic liquid level inductor, are fixed on orifice plate end flat, and setting distance 50~
100cm.Ultrasonic velocity is widely different in water and gas, thus the inductor sharp can perceive gas-liquid interface 50, and inject
The interference such as the impurity in water are barely affected；
The top of the top transverse tube 20 is arranged in exhaust valve 23；The top of the top transverse tube 20 is equipped with exhaust valve 23,
Bottom bridge piece, when exhaust valve 23 is not vented, the top of top transverse tube 20 be it is closed, when in straight tube gas dissolution
When incomplete, it will form bubble 30 by stablizing orifice plate and enter upper space, when gas increases, when liquid level drops to confined planes,
Level sensor issues signal, controls exhaust valve opening, discharges top gas.Therefore, bend pipe not only acts as connection straight tube, and
Play the role of excluding undissolved gas body in time；
Gas injection pipeline, as shown in Figure 1, being connected to the bottom of each straight tube；For to straight tube gas injection；Further, it is also possible to have out
Mouth pipeline connects second straight tube, for water to be discharged；
Gas mixing device, the bottom positioned at each straight tube and the downstream positioned at gas injection pipeline, the gas mixing device include: filtering
Piece, filter are equipped with multiple uniform holes, and filter aperture is 5 μm to 10 μm；Gas mixing device is located at straight pipe bottom, core
The heart is the porous filter with homogeneous diameter, and uniform diameter degree requires 80% or more.The filter applied in Gas dissolving pipe
Can for example there be 5 μm and 10 μm two kinds in aperture.Filtering panel aperture is 5 μm, produces the bubble of 100 μm of bubble diameters, filters panel aperture
It is 510 μm, produces the bubble of 400 μm of bubble diameters.Filter is with a thickness of 2mm.Gas mixing device is connect with external gas injection pipeline.
For example, 100 μm of bubbles, initial in injection, it is desirable that gas-water ratio is no more than 1:3, and (gas-water ratio is lower than 1:5, and dissolution is more filled
Point), rise in single pipeline and keep stable, does not gather simultaneously.When the bubble in each single tube is in device outlet port,
Concentration is maximum (gas-water ratio is no more than 1:3)；About 100 μm of bubbles of bubble diameter ratio account for 20%, because of dissolution, about 50 μm of bubbles of bubble diameter
60% is accounted for, less than 50 μm bubbles account for 20%.To stablize after entering injection well with injection water, bubble volume reduces with pressure rise,
Stability is reinforced.
By taking the common two kinds of gas-nitrogen of petroleum industry and carbon dioxide as an example, 20 DEG C of condition, when 1 atmospheric pressure are marked, not
In the case where patented technology, nitrogen solubility is less than 0.03 (volume ratio with water)；Solubilities of Carbon Dioxide is up to 1.This
Dissolution in invention is not only to be completely dissolved, and is also to maintain the state of stable dispersion.Using the technology of this patent, nitrogen
Dissolution with carbon dioxide is all 10 times of nature dissolution, and up to 1:3 (i.e. 0.3), carbon dioxide can reach 1.5 for nitrogen and water:
1, enough industrial applications.
Waterflood-transmission line, as shown in Figure 1, the bottom of first straight tube is connected to, for filling the water.The water of injection is introduced into one
Then straight tube enters bend pipe according to waterflood direction 14, the top transverse tube 20 by bend pipe and at the top of bend pipe, from bend pipe
According to water discharging direction 16 flow out, into an other straight tube.
Gas is injected to inject in Gas dissolving pipe bottom, for example, as shown in Figure 1, Figure 2 and Figure 3, it is straight from two in single Gas dissolving pipe
The bottom of pipe is injected, after gas mixing device, since filter aperture is tiny, so controllable micro-bubble can be generated；It is micro-
Minute bubbles are carried by buoyancy and fluid in single pipe and are risen, and bubble has dissolved certain volume on pipeline top or whole is molten
Solution；After bend loss, with the rising bubble backward-acting in the straight pipe, the water for having contained certain solution gas continues to dissolve,
Mixed fluid enters lower pipe string.
Before non-gas injection, it is also filled with injection water above the stabilization orifice plate in bend loss, due to the blocking of orifice plate, upper part water flow
There is speed difference with the flowing in lower passage.As shown in Figure 1, Figure 2 and Figure 3, if the bubble being initially generated in single Gas dissolving pipe
Fail whole dissolutions, part bubble is carried along into the Gas dissolving pipe of connection by water filling, and is migrated downwards.Other part bubble is through stabilization
Orifice plate enters above orifice plate, forms water level face on top；When gas flow increases, when water level face drops to confined planes, liquid level induction
Device triggering, sends signal.The exhaust valve at the top of gas unlatching bend pipe is controlled, upper gas is discharged quickly, is then turned off.Top gas
Pressure does not reduce in the less quick unlatching basic guarantee Gas dissolving pipe with exhaust valve of the scale of construction.
The cell structure of plate 21 (stablizing orifice plate) with holes balances injection water in flow at high speed, and gas is at top
Acutely concussion, by the more stable separation of gas, is also beneficial to the accurate judgement liquid level of level sensor.Further, such as Fig. 6, Fig. 7
With shown in Fig. 8, the quick dissolved gas device of industrial application grade include: it is multiple be vertically arranged and sequentially connected Gas dissolving pipe 1,
The floor projection of multiple Gas dissolving pipes 1 is S-type, the quick dissolved gas device of industrial application grade further include: be connected to adjacent two
The bottom bend pipe 12 of a Gas dissolving pipe bottom, the bottom bend pipe are connected between the straight tube of two neighboring Gas dissolving pipe.S type Gas dissolving pipe
Both ends be respectively pipeline interface 13, the pipeline interface 13 of one end connects waterflood-transmission line entrance 17, the pipeline interface 13 of the other end
Connect waterflood-transmission line outlet 18.Injection water gradually increases dissolved gas during single Gas dissolving pipe flows successively through, by S type
Process, dissolved gas increase effect is more preferable, and optimal design is when injection water reaches saturation state in Gas dissolving pipe group exit.It is single
U-shaped pipe, in maximum height limit, solute effect is lower.The present invention uses 9 tubular structures, and occupied area is small, and process is relatively reasonable.
Further, as shown in figure 8, the quick dissolved gas device of the industrial application grade further include: gas pressurized device
60, the gas injection pipeline is connected, in this way, can be pressurized.
Further, the gas pressurized device includes: that sequentially connected gas injection fills, is pressurized pump group and air pump, described
Gas injection, which fills, connects the gas injection pipeline.In this way, supercharging effect is rapid.In the case where connection pressurization pump group and air pump, gas injection
It fills and uses the higher steel cylinder of compressive resistance, internal diameter 100mm, long 10m, volume 0.08m3.30MPa, highest are not higher than using pressure
Pressure-resistant 40MPa.Because the gas injection rate and water injection rate ratio of molten gas process are lower (nitrogen is usually less than 1:50), thus laboratory level
Supercharger can meet the gas displacement, the more pressurization pump groups composed in parallel can also both meet the condition compared with atm number,
Having holidays by turns for separate unit supercharger can be achieved.Air pump is conventional equipment, delivery air pressure 0.8MPa, and discharge capacity is greater than 100L/min
Can, more modes in parallel can also be used.
Further, the quick dissolved gas device of the industrial application grade further include: gas storage device connects the note
Gas fills, and provides industrial gas supply for gas injection filling, industrial scale application may be implemented, such as underground water-injection.Gas storage is adopted
With mature pressure-resistant memory technology, the LNG transfer cask produced at present, transport pressure 20MPa.In strict accordance with DOT-3AAX and
The steel cylinder specification of DOT E8009 production installation.Steel cylinder material: Cr-Mo Steel/4130x Tube Serial No:NJB-
236.Steel cylinder size: outer diameter 559mm, long 10.98m, steel cylinder water capacity: 2.250m3.Gas storage device can use above-mentioned phase
With the steel cylinder of standard production, material is identical.Internal diameter 200mm, long 10m, volume 0.314m3.Inside installation baffle safety plate, it is external
There is fast pressure relief safety valve.It is not higher than 15MPa using pressure, when pressure is more than steel cylinder limiting pressure, main safety valve guard plate
It actively ruptures, main safety valve exhaust decompression；The signal feed back control system simultaneously opens auxiliary safety valve, increases exhaust velocity.
Device has higher guarantee in security performance.
Further, as shown in figure 8, the gas pressurized device 60 connects each Gas dissolving pipe 1, each Gas dissolving pipe 1 is distinguished
It is connected in parallel the gas pressurized device 60 by a bleeder mechanism 61, the bleeder mechanism 61 is gas pressure regulating valve,
Fine tuning is entered gas pressure when single Gas dissolving pipe 1 by gas pressurized device 60.
Further, as shown in figure 8, the quick dissolved gas device of the industrial application grade further include: signal transmission and control
Device 70 processed connects level sensor and exhaust valve by liquid level signal transmission line 71.Signal transmission and control device function master
It include: signal transmission, the control of exhaust valve/auxiliary safety valve and the flow set of supersonic liquid level inductor.Signal passes
Defeated and control device can be with chip or computer or PLC.
Supersonic liquid level inductor is that interval per second transmitting receives signal, ultrasonic velocity is measured, when speed is substantially reduced
When, i.e., gas-liquid interface reaches limit, and control device opens exhaust valve.After gas-liquid interface is normal, exhaust valve closure.
Further, the quick dissolved gas device of the industrial application grade further include: skid platform, skid platform include fortune
Defeated trailer and the fixed rack being mounted on transport trailer, the Gas dissolving pipe, gas storage device, gas pressurized device and letter
Number transmission and control device be arranged on fixed rack.Single Gas dissolving pipe interval 500mm, self-contained Gas dissolving pipe can be by general wagons
Transport.The present invention use 9 tubular structures, multiple Gas dissolving pipes combined horizontal projection it is S-type, occupied area is small, be readily transported and
It is mobile.
Further, the exhaust valve is solenoid valve, convenient for exhaust rapidly and is resetted.
Further, the eye diameter on the plate with holes is 1cm, is spaced 2cm, balances injection water in high velocity stream
When dynamic, the more stable separation of gas is also beneficial to the accurate judgement liquid level of level sensor by violent concussion of the gas at top,
It is suitble to undissolved gas to rise and be discharged.
The course of work of the invention is as follows:
After installing according to Fig. 8, S type Gas dissolving pipe starting point is connect with waterflood-transmission line, outlet end and Water injection well head device or stream
Enter the pipeline connection of well.Connect gas pressurized device.With 20MPa water injection pressure, for the injection of surface temperature condition, specific work
It is as follows to make process:
Preparation:
It is gas pressurized device gas supply in gas storage device, under conditions of having stored gas, is set as 12MPa.Open gas
Body supercharging device makes the gas injection pressure inside the tank of supercharging device reach 21MPa, according to the pressure value of each bleeder mechanism of design setting
(setting value is related with gas medium, gas flow design, and pressure difference is no more than 0.1MPa).
Normal water filling
After the completion of the quick dissolved gas device connection of industrial application grade, normal to fill the water, i.e., injection water is infused along Gas dissolving pipe import
Enter.
2. gas injection operates
Each Gas dissolving pipe gas injection valve is opened, injection gas is injected in Gas dissolving pipe bottom, after gas mixing device, generated controllable
Micro-bubble, referring to fig. 2；Micro-bubble rises initial stage in single pipe, is influenced by gas injection pressure difference release effects, bubble is slightly
Expansion；As the time of dissolution increases, bubble volume is gradually reduced.In single straight tube, being initially generated bubble may be all
Dissolution.
3. level sensor works
Before non-gas injection, it is also filled with injection water above the stabilization orifice plate in bend loss, due to the blocking of orifice plate, upper part water flow
There is speed difference with the flowing in lower passage.As shown in figure 3, if the bubble being initially generated in single Gas dissolving pipe fail all it is molten
Solution, part bubble are carried along into the Gas dissolving pipe of connection by water filling, and are migrated downwards.Other part bubble is stablized orifice plate access aperture
Above plate, water level face is formed on top；When gas flow increases, when water level face drops to confined planes, level sensor triggering is sent
Signal.The exhaust valve at the top of gas unlatching bend pipe is controlled, upper gas is discharged quickly, is then turned off.Top gas amount it is less and
Pressure does not reduce in the quick unlatching basic guarantee Gas dissolving pipe of exhaust valve.
Stablize orifice plate cell structure balance injection water in flow at high speed, gas top violent concussion, by gas
The more stable separation of body is also beneficial to the accurate judgement liquid level of level sensor.
4. the course of dissolution of more rounds
Injection water gradually increases dissolved gas during single Gas dissolving pipe flows successively through, and optimal design is when injection water
Reach saturation state in Gas dissolving pipe group exit.
Hereafter injection water enters pit shaft, and completes the displacement of reservoir oil process in later period.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (10)
1. a kind of method of the quick dissolved gas of industrial application grade, which is characterized in that the quick dissolved gas of industrial application grade
Method includes:
Water is injected in the duct；
Then gas is injected into the pipeline of water filling, by the size Control of the blistering of the gas of injection at 400 μm hereinafter, injection gas
The pressure of body is greater than the manifold pressure 0.2--0.5MPa of water filling.
2. the method for the quick dissolved gas of industrial application grade as described in claim 1, which is characterized in that the industrial application grade
Quick dissolved gas method further include: the undissolved gas in the pipeline of water filling is discharged.
3. the method for the quick dissolved gas of industrial application grade as described in claim 1, which is characterized in that the industrial application grade
Quick dissolved gas method uses the quick dissolved gas device of industrial application grade, the quick dissolved gas device of industrial application grade
Include:
At least one Gas dissolving pipe, the Gas dissolving pipe are U-tube, and the Gas dissolving pipe includes: first for being vertically arranged and being parallel to each other
Root straight tube and second straight tube, and the top being connected between the top of first straight tube and the top of second straight tube are curved
Pipe；First straight tube, top elbows are connected to the inside of second straight tube；First straight tube, top elbows and second straight tube
For accommodating the water of injection；
The top of the top elbows is equipped with fluting；
The Gas dissolving pipe further include:
Top transverse tube is connected on the top elbows；The top transverse tube is tubulose and is horizontally disposed with；The top transverse tube
Inner cavity with it is described fluting be connected to；
Plate with holes is covered on the fluting and is connected between top elbows and the top transverse tube；
The level sensor for monitoring plate with holes is arranged in the inner cavity of the top transverse tube；
The top of the top transverse tube is arranged in exhaust valve；
Gas injection pipeline is connected to the bottom of first straight tube and second straight tube；
Gas mixing device, the bottom positioned at first straight tube and the downstream positioned at gas injection pipeline, the gas mixing device include: filtering
Piece, filter are equipped with multiple uniform holes, and filter aperture is 5 μm to 10 μm；Filter is with a thickness of 2mm；
Waterflood-transmission line is connected to the bottom of first straight tube.
4. the method for the quick dissolved gas of industrial application grade as claimed in claim 3, which is characterized in that the industrial application grade
Quick dissolved gas device includes: multiple is vertically arranged and sequentially connected Gas dissolving pipe, the floor projection of multiple Gas dissolving pipes are in S
Type, the quick dissolved gas device of industrial application grade further include: be connected to the bottom bend pipe of two neighboring Gas dissolving pipe bottom, institute
Bottom bend pipe is stated to be connected between two neighboring Gas dissolving pipe.
5. the method for the quick dissolved gas of industrial application grade as claimed in claim 3, which is characterized in that the industrial application grade
Quick dissolved gas device further include: gas pressurized device connects the gas injection pipeline, the gas pressurized device include: according to
The gas injection of secondary connection fills, pressurization pump group and air pump, the gas injection fill the connection gas injection pipeline.
6. the method for the quick dissolved gas of industrial application grade as claimed in claim 3, which is characterized in that the industrial application grade
Quick dissolved gas device connects the S type that be formed using nine straight tubes, is divided into 500mm between adjacent straight tube.
7. the method for the quick dissolved gas of industrial application grade as claimed in claim 5, which is characterized in that the gas boosting dress
The each Gas dissolving pipe of connection is set, each Gas dissolving pipe passes through a bleeder mechanism respectively and is connected in parallel the gas pressurized device, described
Bleeder mechanism is gas pressure regulating valve.
8. the method for the quick dissolved gas of industrial application grade as claimed in claim 5, which is characterized in that the industrial application grade
Quick dissolved gas device further include: signal transmission and control device connect level sensor and exhaust valve, the exhaust valve are
Solenoid valve.
9. the method for the quick dissolved gas of industrial application grade as claimed in claim 8, which is characterized in that the industrial application grade
Quick dissolved gas device further include: skid platform, skid platform include transport trailer and the fixation that is mounted on transport trailer
Rack, the Gas dissolving pipe, gas pressurized device and signal transmission and control device are arranged on fixed rack.
10. the device of the quick dissolved gas of industrial application grade as claimed in claim 3, which is characterized in that described with holes puts down
Eye diameter on plate is 1cm, is spaced 2cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293515.XA CN109224891B (en) | 2018-11-01 | 2018-11-01 | Industrial application grade method for quickly dissolving gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811293515.XA CN109224891B (en) | 2018-11-01 | 2018-11-01 | Industrial application grade method for quickly dissolving gas |
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| CN109224891B (en) | 2021-02-12 |
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