CN109138942A - Separate-layer injection pipe column and separate-layer injection system - Google Patents
Separate-layer injection pipe column and separate-layer injection system Download PDFInfo
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- CN109138942A CN109138942A CN201810861169.4A CN201810861169A CN109138942A CN 109138942 A CN109138942 A CN 109138942A CN 201810861169 A CN201810861169 A CN 201810861169A CN 109138942 A CN109138942 A CN 109138942A
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- sliding sleeve
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- 238000002347 injection Methods 0.000 title claims abstract description 131
- 239000007924 injection Substances 0.000 title claims abstract description 131
- 238000007789 sealing Methods 0.000 claims abstract description 51
- 210000002445 nipple Anatomy 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000010009 beating Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 68
- 239000010410 layer Substances 0.000 description 53
- 239000004615 ingredient Substances 0.000 description 10
- 238000012856 packing Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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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
- E21B43/14—Obtaining from a multiple-zone well
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
- E21B43/243—Combustion in situ
-
- 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
- E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
- E21B2200/06—Sleeve valves
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The application discloses layering injection string and layering injection system, wherein, the layering injection string includes: the outer pipe column and the inner pipe column are sleeved in the outer pipe column; the inner pipe column comprises a first gas injection device, a sealing device and a second gas injection device which are connected in sequence; the outer pipe column is provided with a cable-passing packer capable of separating an oil sleeve annulus between the outer pipe column and the sleeve; the sealing device separates an annulus between the outer and inner tubular strings. The application discloses can be used to viscous crude well's layering injection string and layering injection system can realize the fireflood layering and ignite, effectively utilizes ignition system to improve the efficiency of viscous crude exploitation.
Description
Technical field
This application involves heavy oil development field more particularly to a kind of layering injection string and layering injected systems.
Background technique
Liaohe Oilfield Heavy Crude is since its colloid, bitumen content are very high, poor fluidity, thus exploitation difficulty is larger, Er Qieyi
It is in the steam soak mode later period, is badly in need of conversion development scheme at present to reach stable yields effect.It is taken over fireflood as it
Development scheme is a kind of effective means, and the key that fireflood is succeeded in developing is oil layer ignition, and the invention patent provides one
Kind can test oil jacket isolation layering injection string.
Currently, electric ignition is one of domestic and international common oil layer ignition major way.Fireflood electric ignition technology is mainly benefit
Medium (the air or combustion adjuvant) heating for being injected ground with downhole electric heater, and be allowed to aoxidize with the crude oil in oil reservoir
Reaction, reaches nature point and burns.
The sparking mode that oil field uses at present is mainly single layer igniting, i.e., carries out electric igniter tripping in destination layer position a little
Fire.By fireflood apply in igniter difference electric ignition system can be divided into cluster electric igniter ignition system, retrievable electricity
Igniter fire system etc..
Wherein, cluster bundlees igniter to tubing string, since tubing string does not rise out in entire light-off period, causes to light a fire
After power cable and igniter be burned out, cannot reuse, cost is excessive.
Retrievable electric igniter ignition system is by taking out tripping in, it can be achieved that igniter is recycled, still with tubing string
In uninterrupted gas injection production process, well head rountrip difficulty is larger, and safety is lower.
Currently, the existing layering fireflood tubing string into field test only has oil jacket isolation layered gas-injection tubing string to realize with one heart
Bilayer dispensing, but due between inner and outer pipes annular space limitation, can not tripping in igniter, can only using steam injection preheat nature
Igniting or chemic ignition, light that the effect is unsatisfactory.
Single layer sparking mode in summary, light a fire tubing string and construction complexity, single igniting higher cost, ignition system utilize
Rate is low, can not achieve multi-layer firing, therefore, how to realize fireflood layering igniting, efficiently uses ignition system, realize and repeat benefit
With raising safety coefficient, thus the problem of improving the efficiency of thickened oil recovery, being current urgent need to resolve.
Summary of the invention
The purpose of the invention patent is to provide a kind of layering injection string that can be used for heavy oil wells and layering injected system, with
It realizes fireflood layering igniting, ignition system is efficiently used, to improve the efficiency of thickened oil recovery.
The technical solution of the application is as follows:
A kind of layering injection string, comprising: outer tubing string, the interior tubing string being sheathed in the outer tubing string；Said inner tube column packet
Include the first gas injection device, sealing device, the second gas injection device of sequential connection；The outer tubing string is equipped with can be by the outer tubing string
The cable-passing packer that oil jacket annulus between casing separates；The sealing device will be between the outer tubing string and interior tubing string
Annular space separates；
First gas injection device includes the first outer tube and the first sliding sleeve in the first outer tube that lengthwise extends；
The tube wall of first outer tube is equipped with the first exhaust through hole；First sliding sleeve can along first outer tube axial movement with
Closed position is moved to from open position；First sliding sleeve opens first exhaust through hole when being located at open position；Institute
When stating the first sliding sleeve and being located at first position, first exhaust through hole is closed；
Second gas injection device includes the second outer tube and the second sliding sleeve in the second outer tube that lengthwise extends；
The tube wall of second outer tube is equipped with the second exhaust through hole；Second sliding sleeve can along second outer tube axial movement with
The second position is moved to from first position；Second sliding sleeve blocks second exhaust through hole when being located at first position；Institute
It states when the second sliding sleeve is located at the second position and opens second exhaust through hole.
As a preferred embodiment, the sealing device includes central tube and outer cylinder；The central tube and institute
State palette between outer cylinder；The upper end of the central tube connects first gas injection device, the lower end connection of the central tube
Second gas injection device；The outer cylinder is connected on the outer tubing string.
As a preferred embodiment, be fixed on the inner wall of the outer cylinder multiple palettes be set in it is described
Tubing seal ring in the pipe outer wall of center；Multiple tubing seal rings are along the first outer tube axial arranging.
As a preferred embodiment, between tubing seal ring between the two neighboring tubing seal ring
Away from equal.
As a preferred embodiment, the outer cylinder includes the top connection being linked in sequence, multiple pipe nipples, lower contact；
The outer cylinder is connected on the outer tubing string by the top connection and lower contact；Two neighboring pipe nipple, which is connected to be formed, accommodates institute
State the inner groove of tubing seal ring；The inner groove for accommodating the tubing seal ring is formed between the pipe nipple and the top connection；
The inner groove for accommodating the tubing seal ring is formed between the pipe nipple and the lower contact.
As a preferred embodiment, when first sliding sleeve is located at open position, second sliding sleeve is located at the
One position；When first sliding sleeve is located at closed position, second sliding sleeve is located at the second position.
As a preferred embodiment, the inner wall of first outer tube is equipped with the first pockets；Described first is sliding
It puts on and is equipped with the first elastic portion；When first sliding sleeve is located at open position, first elastic portion is located at described first and accommodates
The top of groove, also, first elastic portion is by the inner wall undergauge of first outer tube；First sliding sleeve is located at close stance
When setting, the first elastic portion reset is caught in first pockets and is limited.
As a preferred embodiment, first elastic portion includes being located at first outer tube circumferentially to arrange
Multiple first valve bodies；Interval gap is equipped between circumferentially adjacent two the first valve bodies；First elastic portion is in reset state
The upper end of Shi Suoshu the first valve body has and can be caught in the first of first pockets and be caught in protrusion.
As a preferred embodiment, first sliding sleeve connects first outer tube by the first shear pin,
To be located in the open position.
As a preferred embodiment, first outer tube includes the first top connection pipe being connected, the first connection
Pipe, the first lower contact pipe；The lower end inner wall of the first top connection pipe is equipped with the first limited step；The first limited step institute
In the axially vertical of plane and first outer tube；First limited step forms the upside table of first pockets
Face；The upper end of the first top connection pipe is equipped with internal screw thread；The lower end of the first lower contact pipe is equipped with external screw thread.
As a preferred embodiment, the inner wall of second outer tube is equipped with the second pockets；Described second is sliding
It puts on and is equipped with the second elastic portion；When second sliding sleeve is located at first position, second elastic portion is located at described second and accommodates
The top of groove, also, second elastic portion is by the inner wall undergauge of second outer tube；Second sliding sleeve is located at first
When setting, the second elastic portion reset is caught in second pockets and is limited.
As a preferred embodiment, second elastic portion includes being located at second outer tube circumferentially to arrange
Multiple second valve bodies；Interval gap is equipped between circumferentially adjacent two the second valve bodies；Second elastic portion is in reset state
The upper end of Shi Suoshu the second valve body has and can be caught in the second of second pockets and be caught in protrusion.
As a preferred embodiment, second sliding sleeve connects second outer tube by the second shear pin,
To be located in the first position.
As a preferred embodiment, second sliding sleeve is equipped with intercommunicating pore；The outer wall of second sliding sleeve exists
The lower section of the intercommunicating pore is equipped with closure part；The closure part include the first sealing ring and below the first sealing ring second
Sealing ring；Spacing distance between first sealing ring and second sealing ring is greater than or equal to second exhaust through hole
Along the length of the second outer tube axial direction；When second sliding sleeve is located at first position, second exhaust through hole is located at described
Between first sealing ring and second sealing ring, to be blocked；When second sliding sleeve is located at the second position, the intercommunicating pore
With second exhaust through hole is radially aligned is connected to.
As a preferred embodiment, second outer tube includes the second top connection pipe being connected, the second connection
Pipe, the second lower contact pipe；The lower end inner wall of the second top connection pipe is equipped with the second limited step；The second limited step institute
In the axially vertical of plane and second outer tube；Second limited step forms the upside table of second pockets
Face；The upper end of the second top connection pipe is equipped with internal screw thread；The lower end of the second lower contact pipe is equipped with external screw thread.
As a preferred embodiment, the cable-passing packer is Y361 packer.
As a preferred embodiment, the outer tubing string includes the first oil pipe；Said inner tube column includes that outer diameter is less than
Second oil pipe of the first oil pipe outer diameter.
As a preferred embodiment, second oil pipe is insulated tubing.
As a preferred embodiment, the lower end of the outer tubing string blocks；The lower end of said inner tube column blocks.
A kind of layering injected system, comprising:
As above any layering injection string；
Igniter inside energy tripping in said inner tube column；The lower section of the igniter, which is equipped with, can push first sliding sleeve
With the opening tool of second sliding sleeve；The opening tool pushes first to slide when first sliding sleeve is located at open position
Set, and pass through the first sliding sleeve when first sliding sleeve is located at closed position；The opening tool can be in second sliding sleeve position
The second sliding sleeve is pushed when first position, and passes through the second sliding sleeve when second sliding sleeve is located at the second position.
The utility model has the advantages that
Layering injection string provided herein is passed through close by being equipped with the first gas injection device and the second gas injection device
Seal apparatus forms mutually independent upper layer gas injection channel and lower layer's gas injection channel with cable-passing packer.Wherein, the first gas injection device
It can open in upper layer gas injection, by the first exhaust through hole to upper layer oil jacket annulus and upper layer oil reservoir gas injection, and be infused in lower layer
It is closed when gas, opens the second gas injection device at this time and realized by being layered injection string to lower layer's oil reservoir gas injection, and pass through oil jacket
Annular space still can be to upper layer oil reservoir gas injection.
As it can be seen that layering injection string provided herein can by being equipped with the first gas injection device and the second gas injection device
Realize that upper layer gas injection layer and lower layer's gas injection layer are mutually isolated, guarantee it is interference-free when lower layer's gas injection, meanwhile, when gas injection not on upper layer
It is interfered by lower layer.Therefore, layering injection string provided by present embodiment can be realized fireflood layering igniting, efficiently use point
Fiery system improves the efficiency of thickened oil recovery.
Meanwhile
Referring to following description and accompanying drawings, only certain exemplary embodiments of this invention is disclosed in detail, specifies original of the invention
Reason can be in a manner of adopted.It should be understood that embodiments of the present invention are not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, embodiments of the present invention include many changes, modifications and are equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those skilled in the art without any creative labor, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is that injected system schematic diagram is layered provided by a kind of embodiment of the application；
Fig. 2 is the first gas injection device opening state structural schematic diagram of Fig. 1；
Fig. 3 is that the first sliding sleeve of Fig. 2 is located at reset state flowering structure cross-sectional view；
Fig. 4 is the second gas injection device closed state structural schematic diagram of Fig. 1；
Fig. 5 is that the second sliding sleeve of Fig. 2 is located at reset state flowering structure cross-sectional view；
Fig. 6 is the schematic diagram of sealing device of Fig. 1.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to guarantor of the present invention
The range of shield.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be another elements placed in the middle.When an element is considered as " connection " another element, it be can be directly
It is connected to another element in succession or may be simultaneously present another element placed in the middle.Term as used herein " vertically ", " water
It is flat ", "left", "right" and similar statement for illustrative purposes only, be not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
Any and all combinations of relevant listed item.
Fig. 1 is please referred to Fig. 6.A kind of layering injection string is provided in the application embodiment, comprising: outer tubing string 900, set
Interior tubing string 100 in the outer tubing string 900；Said inner tube column 100 includes the first gas injection device 200, close being linked in sequence
Seal apparatus 150, the second gas injection device 400；The outer tubing string 900 is equipped with can will be between the outer tubing string 900 and casing 500
The cable-passing packer 300 that oil jacket annulus separates；The sealing device 150 will be between the outer tubing string 900 and interior tubing string 100
Annular space separates.
As shown in Figure 2 and Figure 3.First gas injection device 200 include lengthwise extend the first outer tube 1 and be located at first
The first sliding sleeve 2 in outer tube 1；The tube wall of first outer tube 1 is equipped with the first exhaust through hole 7；First sliding sleeve 2 can be along institute
The axial movement of the first outer tube 1 is stated to be moved to closed position from open position；First sliding sleeve 2 will when being located at open position
First exhaust through hole 7 is opened；When first sliding sleeve 2 is located at first position, first exhaust through hole 7 is closed.
As shown in Figure 4, Figure 5.Second gas injection device 400 includes the second outer tube 20 that lengthwise extends and is located at the
The second sliding sleeve 30 in two outer tubes 20；The tube wall of second outer tube 20 is equipped with the second exhaust through hole 26；Second sliding sleeve
30 can along second outer tube 20 axial movement to be moved to the second position from first position；Second sliding sleeve 30 is located at the
Second exhaust through hole 26 is blocked when one position；Second outlet is led to when second sliding sleeve 30 is located at the second position
It opens in hole 26.
It when in use, will be in the layering injection string tripping in pit shaft (casing 500).Under fashionable first sliding sleeve 2 be located at open
Position, the second sliding sleeve 30 are located at first position.Multiple cable-passing packers 300 can be serially connected on outer tubing string 900.By multiple mistakes
Cable packer 300, which is set, is separated to form oil jacket annulus the upper layer oil jacket annulus 510 for respectively corresponding upper and lower oil reservoir and lower layer
Oil jacket annulus 520.Upper layer oil jacket annulus 510 is spaced by the oil jacket annulus of cable-passing packer 300 and top on most, is prevented
Only collaborate with top oil jacket annulus.
In the application embodiment, sealing device 150 will be separated to form difference between interior tubing string 100 and outer tubing string 900
Annular space 920 between annular space 910 and down tube between the corresponding upper tube of oil reservoir up and down.The corresponding connection upper layer oil jacket ring of annular space 910 between upper tube
Sky 510 forms upper layer gas injection channel.The corresponding connection lower layer's oil jacket annulus 520 of annular space 920, forms lower layer's gas injection channel between down tube.
Outer tubing string 900 is equipped with the upper venthole of the connection corresponding with upper layer oil jacket annulus 510 of annular space 910 between upper tube.On outer tubing string 900
Equipped with by the lower production well of the connection corresponding with lower layer's oil jacket annulus 520 of annular space 920 between down tube.First gas injection device 200 is corresponding to be connected
Annular space 910 between logical upper tube, thus corresponding connection upper layer oil jacket annulus 510；Annular space between the corresponding connection down tube of second gas injection device 400
920, thus corresponding connection lower layer's oil jacket annulus 520.
When needing to light a fire, the tripping in igniter in layering injection string.801 points of upper layer oil reservoir are carried out using igniter
Fire.When carrying out the igniting of upper layer oil reservoir 801, air can be injected by interior tubing string 100 using wellhead assembly 800 (Wellhead tree),
It can also be to oil jacket annulus gas injection.In the application embodiment, the lower section of the igniter, which is equipped with, can push described first
The opening tool (not shown) of sliding sleeve 2 and second sliding sleeve 30.It transfers igniter (not shown) and opens tool, it is sliding by first
It is pushed into closed position under set 2, the first gas injection device 200 is closed, at this point it is possible to by oil jacket annulus to top oil reservoir gas injection,
Maintain the air requirements of combustion in situ.
Continue to transfer igniter and open tool, opens tool and push the second sliding sleeve 30, by the second sliding sleeve 30 from first
It sets and is pushed to the second position, the second gas injection device 400 is opened, at this point it is possible to pass through interior tubing string 100 to 802 note of lower layer's oil reservoir
Gas, and lighted a fire by igniter to lower layer's oil reservoir 802, to finally realize layering igniting gas injecting mining.
Layering injection string is by being equipped with the first gas injection device 200 and the second gas injection device provided by present embodiment
400, and mutually independent upper layer gas injection channel and lower layer's gas injection channel are formed with cable-passing packer 300 by sealing device 150.
First gas injection device 200 can be opened in upper layer gas injection, by the first exhaust through hole 7 to upper layer oil jacket annulus 510 and upper layer
801 gas injection of oil reservoir, and being closed in lower layer's gas injection, open at this time the second gas injection device 400 by be layered injection string realize to
802 gas injection of lower layer's oil reservoir, and still can be to 801 gas injection of upper layer oil reservoir by oil jacket annulus.
As it can be seen that layering injection string is by being equipped with the first gas injection device 200 and the second gas injection provided by present embodiment
Device 400 can be realized upper layer gas injection layer and lower layer's gas injection layer is mutually isolated, guarantee lower layer's gas injection when it is interference-free, meanwhile,
It is not interfered by lower layer when the gas injection of upper layer.Therefore, layering injection string provided by present embodiment can be realized fireflood demixing point
Fire efficiently uses ignition system, improves the efficiency of thickened oil recovery.
In the present embodiment, the opening tool pushes the first sliding sleeve when first sliding sleeve 2 is located at open position
2, and pass through the first sliding sleeve 2 when first sliding sleeve 2 is located at closed position.The opening tool can be in second sliding sleeve 30
The second sliding sleeve 30 is pushed when positioned at first position, and passes through the second sliding sleeve 30 when second sliding sleeve 30 is located at the second position.
In the application embodiment, the outer tubing string 900 includes the first oil pipe.Said inner tube column includes that outer diameter is less than institute
State the second oil pipe of the first oil pipe outer diameter.Specifically, second oil pipe is insulated tubing.The lower end seal of the outer tubing string 900
It is stifled.The lower end of said inner tube column blocks.Wherein, the lower end (end) of outer tubing string 900 can be equipped with silk plug, its lower end is blocked.
The lower end (end) of interior tubing string can be equipped with silk plug, its lower end is blocked.
Multiple cable-passing packers 300 are serially connected on outer tubing string 900.As shown in Figure 1, setting on outer tubing string 900, there are two mistakes
Cable packer 300.Oil jacket annulus between two cable-passing packers 300 forms upper layer oil jacket annulus 510.Most played cable
The oil jacket annulus of 300 lower section of packer forms lower layer's oil jacket annulus 520.The oil jacket annulus of most upper 300 top of cable-passing packer
Top oil jacket annulus is formed, and is spaced by most upper cable packer 300 with upper layer oil jacket annulus, avoids collaborating.
In the application embodiment, the second oil pipe may include plain end oil well pipe, insulated tubing.First oil pipe can be flat
Formula oil pipe.Wherein, insulated tubing length can match for igniting oil reservoir length (height), other oil pipes can be flat oil
Pipe.When in use can by the layering injection string tripping in casing 500, oil jacket annulus (outer tubing string 900 and casing 500 it
Between annular space) in tripping in measuring temperature wire cable 600, the packing element of cable-passing packer 300 can pass through for measuring temperature wire cable 600.
Preferably, it is equipped between the packing element of cable-passing packer 300 and the inner tube of cable-passing packer 300 for measuring temperature wire cable
The annulus access that 600 (such as temperature-measuring optical fibers) pass through.In this way, cable 600 can't destroy the sealing of packing element by packer 300
Performance.The arrival end that cable 600 enters annulus access can be equipped with multiple graphite grazings that direction arrangement is penetrated along cable 600
Ring guarantees the packing performance of entire cable-passing packer 300.
In the application embodiment, cable-passing packer 300 is thermal packer.By using the packer 300
Cable 600 can be made to pass through and protect cable 600 not by the damage of liquid stream, and can completely retain sealing structure (packing element), make institute
The sealing performance for stating cable-passing packer 300 is not destroyed.
Specifically, the sealing position of cable-passing packer 300 can be sealed using graphite-seal ring.Cable-passing packer
300 can have setting mechanism, packing element.Setting mechanism can be as the temperature rises by packing element extrusion expansion, to set
Target position.Piston motion is pushed to squeeze packing element specifically, setting mechanism can use thermal expansion material (such as alcohol).Tool
Body, the cable-passing packer 300 is Y361 packer.
In the application embodiment, which is flexible sealing device.Interior tubing string and outer tubing string 900 because
When the axially opposing displacement of heated generation, sealing device 150 is able to maintain the annular space between interior tubing string 100 and outer tubing string 900 is close
Envelope separates.In the particular embodiment, sealing device 150 is insertion sealing device.
Specifically, as shown in Figure 6.The sealing device 150 includes central tube 151 and outer cylinder 152.The central tube
Palette between 151 and the outer cylinder 152.The upper end of the central tube 151 connects first gas injection device, the center
The lower end of pipe 151 connects second gas injection device.The outer cylinder 152 is connected on the outer tubing string 900.
Sealing is inserted between central tube 151 and outer cylinder 152.Have between central tube 151 and outer cylinder 152 along axial default length
The seal section of degree.When axially opposing displacement occurs between central tube 151 and outer cylinder 152, it is able to maintain gluing, sealing.Wherein,
The tubing seal ring that multiple palettes are set on 151 outer wall of central tube is fixed on the inner wall of the outer cylinder 152
156.Multiple tubing seal rings 156 are along the first outer tube axial arranging.Two neighboring tubing seal ring 156 is axially spaced pre-
Set a distance.Preferably, the spacing between tubing seal ring 156 between the two neighboring tubing seal ring 156 is equal.
Further, the outer cylinder 152 includes the top connection 153 being linked in sequence, multiple pipe nipples 154, lower contact 155.Institute
Outer cylinder 152 is stated to be connected on the outer tubing string 900 by the top connection 153 and lower contact 155.Two neighboring 154 phase of pipe nipple
Connection forms the inner groove (not indicating) for accommodating the tubing seal ring 156.Between the pipe nipple 154 and the top connection 153
Form the inner groove for accommodating the tubing seal ring 156.It is formed between the pipe nipple 154 and the lower contact 155 described in accommodating
The inner groove of tubing seal ring 156.
Wherein, top connection 153 is equipped with internal screw thread to connect outer tubing string 900.Lower contact 155 is equipped with external screw thread to connect outer tube
Column 900.The upper end of pipe nipple 154 is equipped with internal screw thread, and lower end is equipped with external screw thread.The inner wall of pipe nipple 154, which is equipped with, accommodates step, accommodates platform
The lower end of rank and top pipe nipple 154 forms the inner groove.In 156 fixed snap inner groove of tubing seal ring.It is close by oil pipe
Seal ring 156 will seal between outer cylinder 152 and central tube 151, so that the annular space between interior tubing string 100 and outer tubing string 900 be separated
Sealing.
In the application embodiment, when first sliding sleeve 2 as shown in Figure 2 is located at open position, second sliding sleeve
30 are located at first position.When first sliding sleeve 2 is located at closed position, second sliding sleeve 30 is located at the second position.That is, the
When one gas injection device 200 opens gas injection, the second gas injection device 400 is in close state as shown in Figure 4.First gas injection device 200
It closes gas injection (can be from oil jacket annulus gas injection), the second gas injection device 400 opens gas injection.First gas injection device 200 and the second note
The switch state of device of air 400 is interrelated, to realize between layered gas-injection independently of each other, does not interfere with each other.
Specifically, refering to shown in Fig. 2, Fig. 3.The inner wall of first outer tube 1 is equipped with the first pockets 4.Described first
Sliding sleeve 2 is equipped with the first elastic portion 3.When first sliding sleeve 2 is located at open position, first elastic portion 3 is located at described the
The top of one pockets 4, also, first elastic portion 3 is by the inner wall undergauge of first outer tube 1.First sliding sleeve 2
When positioned at closed position, the reset of the first elastic portion 3 is caught in first pockets 4 and is limited.
As shown in figure 3, outer diameter of first elastic portion 3 under normal condition (reset state) is greater than 1 (the non-receiving of the first outer tube
Groove position) internal diameter.By undergauge when first sliding sleeve 2 is located at open position, outer diameter and inner diameter is reduced.First elastic portion 3
The upper end of the first sliding sleeve 2 can be located at, it is of course also possible to be located at the other positions of the first sliding sleeve 2.The first elastic portion after undergauge
3 can not pass through for opening tool.As shown in figure 3,3 internal diameter of the first elastic portion expansion after resetting can pass through for opening tool.
Specifically, first elastic portion 3 includes being located at multiple first valve bodies 8 that first outer tube 1 is circumferentially arranged.
Interval gap 10 is equipped between circumferentially adjacent two the first valve bodies 8.First elastic portion 3 in reset state described in first
The upper end of valve body 8 is caught in protrusion 9 with that can be caught in the first of first pockets 4.Multiple first valve bodies 8 are circumferentially uniform
Distribution.
For first sliding sleeve 2 at open position, the first sliding sleeve 2 is located at the top of the first exhaust through hole 7, so that the first outlet is logical
Hole 7 is not blocked by the first sliding sleeve 2, is communicated with the inside of the first outer tube 1 in the open state.First, which is caught in protrusion 9, is caught in receiving
When groove, the first valve body 8 is located at the outer surface that first is caught in raised 9 section below can fit with the inner wall of the first outer tube 1,
Can certainly be there are portion gap, the application and with no restriction.When first elastic portion 3 is located at normal condition or reset state,
First outer diameter for being caught in protrusion 9 is greater than the internal diameter of first outer tube 1 (non-first pockets, 4 position).
To avoid during being layered injection string tripping in, it is mobile that unnecessary position occurs in the first sliding sleeve 2.Described first
Sliding sleeve 2 connects first outer tube 1 by the first shear pin 6, to be located in the open position.First shear pin 6 will
The positioning of first sliding sleeve 2, when the first sliding sleeve 2 is pushed to closed position, the first sliding sleeve 2 cuts the first shear pin 6, then
Slide into closed position.When first sliding sleeve 2 is located at closed position, first exhaust through hole 7 is blocked inside the first outer tube 1, is hindered
It keeps off inside the first exhaust through hole 7 and the first outer tube 1 and communicating.
In present embodiment, the first pockets 4 are set on the inner wall of the first outer tube 1, are caught in protrusion 9 first and are caught in
First pockets 4 limit the first sliding sleeve 2 when the first pockets 4, and igniter and opening tool can pass through first at this time
Sliding sleeve 2 can mitigate the force outside well, while the first sliding sleeve 2 can also be reminded to be properly positioned at closed position.
First outer tube 1 includes the first top connection pipe 11, the first connecting tube 12, the first lower contact pipe 13 being connected.
The lower end inner wall of the first top connection pipe 11 is equipped with the first limited step 5.To avoid 2 uplink of the first sliding sleeve from retreating, described the
One limited step, 5 place plane is axially vertical with first outer tube 1.First limited step 5, which forms described first, to be held
Receive the uper side surface of groove 4.The upper surface of first sliding sleeve 2 is parallel with the first limited step 5.By the first limited step 5 to
One sliding sleeve, 2 retaining guarantees that the first gas injection device 200 maintains in off position.
In the present embodiment, as shown in Figure 2.First connecting tube 12 includes the upper connector 14 and lower connector being connected
15.Upper connector 14 and the first top connection pipe 11 form first pockets 4.First exhaust through hole 7 is located at described
Lower connector 15.First top connection pipe 11 is connected by the first connecting tube 12 with the first lower contact pipe 13.First connecting tube 12
Upper end is equipped with external screw thread, and lower end is equipped with external screw thread.The upper end of the first top connection pipe 11 is equipped with internal screw thread；It is connect under described first
The lower end of head tube 13 is equipped with external screw thread.
In the application embodiment, as shown in Figure 4, Figure 5.Second sliding sleeve 30 is equipped with intercommunicating pore 34.Described
The outer wall of two sliding sleeves 30 is equipped with closure part in the lower section of the intercommunicating pore 34.The closure part includes the first sealing ring 35 and is located at
Second sealing ring 26 of 35 lower section of the first sealing ring.Interval distance between first sealing ring 35 and second sealing ring 26
From the length more than or equal to second exhaust through hole 26 along 20 axial direction of the second outer tube.
When second sliding sleeve 30 is located at first position, second exhaust through hole 26 is located at 35 He of the first sealing ring
Between second sealing ring 26, to be blocked；When second sliding sleeve 30 is located at the second position, the intercommunicating pore 34 with it is described
The radially aligned connection of second exhaust through hole 26.The quantity of intercommunicating pore 34 circumferentially can be with the quantity phase of the second exhaust through hole 26
Together.When the second sliding sleeve 30 is located at the second position, intercommunicating pore 34 can be corresponded with the second exhaust through hole 26 and is connected to.
In the present embodiment, the inner wall of second outer tube 20 is equipped with the second pockets 32.Second sliding sleeve 30
It is equipped with the second elastic portion 31.When second sliding sleeve 30 is located at first position, second elastic portion 31 is located at described second
The top of pockets 32, also, second elastic portion 31 is by the inner wall undergauge of second outer tube 20.Second sliding sleeve
30 when being located at first position, and second elastic portion 31 reset is caught in second pockets 32 and is limited.
In present embodiment, the second pockets 32 are set on the inner wall of the second outer tube 20, are caught in protrusion 38 second
Second pockets 32 limit the second sliding sleeve 30 when being caught in the second pockets 32, and igniter and opening tool can lead at this time
The second sliding sleeve 30 is crossed, the force outside well can be mitigated, while the second sliding sleeve 30 can also be reminded to be properly positioned at close stance
It sets.
Outer diameter of second elastic portion 31 under normal condition (reset state) is greater than 20 (non-pockets portion of the second outer tube
Position) internal diameter.By undergauge when second sliding sleeve 30 is located at open position, outer diameter and inner diameter is reduced.Second elastic portion 31 can be with
Positioned at the upper end of the second sliding sleeve 30.It is of course also possible to be located at the other positions of the second sliding sleeve 30.The second elastic portion 31 after undergauge
It can not pass through for opening tool.As shown in figure 5,31 internal diameter of the second elastic portion expansion after resetting can pass through for opening tool.
Wherein, the second outer tube 20 and the first outer tube 1 can have identical outer diameter and inner diameter.
In the present embodiment, second elastic portion 31 include be located at second outer tube 20 circumferentially arrange it is multiple
Second valve body 37.Interval gap 39 is equipped between circumferentially adjacent two the second valve bodies 37.Second elastic portion 31 is resetting
The upper end of second valve body 37 described in when state is caught in protrusion 38 with that can be caught in the second of second pockets 32.Multiple
Two valve bodies 37 are uniformly distributed circumferentially.
In the present embodiment, for the second sliding sleeve 30 at first position, intercommunicating pore 34 is located at the upper of the second exhaust through hole 26
Side, the second exhaust through hole 26 is between the first sealing ring 35 and the second sealing ring 26, the first sealing ring 35 and the second sealing ring
26 are bonded with the inner wall of the second outer tube 20, so that the second exhaust through hole 26 be blocked.
In the present embodiment, second protrusion 38 is caught in when being caught in the second pockets 32, the second sliding sleeve 30 is in second
It sets.At this point, intercommunicating pore 34 is communicated with the second exhaust through hole 26, the second gas injection device 400 is opened to the note for realizing lower layer's oil reservoir 802
Gas igniting.Second valve body 37 is located at the outer surface that second is caught in raised 38 section below can be affixed with the inner wall of the second outer tube 20
It closes, naturally it is also possible to there are portion gap, the application and with no restriction.Second elastic portion 31 is located at normal condition or reset state
When, the second outer diameter for being caught in protrusion 38 is greater than the internal diameter of second outer tube 20 (non-second pockets, 32 position).
To avoid during being layered injection string tripping in, it is mobile that unnecessary position occurs in the second sliding sleeve 30.Described
Two sliding sleeves 30 connect second outer tube 20 by the second shear pin, to be located in the first position.Second shear pin
Second sliding sleeve 30 is positioned, when the second sliding sleeve 30 is pushed to the second position, the second sliding sleeve 30 cuts the second shear pin,
Then the second position is slid into.When second sliding sleeve 30 is located at the second position, by the second exhaust through hole 26 inside the second outer tube 20
It opens, will be communicated inside second exhaust through hole 26 and the second outer tube 20 using intercommunicating pore 34.
In the present embodiment, second outer tube 20 include be connected the second top connection pipe 21, the second connecting tube 22,
Second lower contact pipe 23.The lower end inner wall of the second top connection pipe 21 is equipped with the second limited step 33.To avoid the second sliding sleeve
30 uplinks retreat, and the 33 place plane of the second limited step is axially vertical with second outer tube 20.Second limit
Step 33 forms the uper side surface of second pockets 32.The upper surface of second sliding sleeve 30 and the second limited step 33 are flat
Row.By the second limited step 33 to 30 retaining of the second sliding sleeve, guarantee that the second gas injection device 400 maintains opening state.
The upper end of the second top connection pipe 21 is equipped with internal screw thread；The lower end of the second lower contact pipe 23 is equipped with outer spiral shell
Line.Wherein, the second connecting tube 22 includes the upper connector 24 and lower connector 25 that are connected, in upper connector 24 and described second
Junction block 21 forms second pockets 32.Second exhaust through hole 26 is located at the lower connector 25.
In the application embodiment, the bottom for being layered the interior tubing string 100 of injection string is equipped with silk plug 700, by tubing string
Bottom blocks.Specifically, silk plug 700 can be installed on the bottom of the second gas injection device 400 namely the bottom of the second lower contact pipe 23
Portion.
A kind of layering injected system is also provided in the application embodiment, comprising: as above any layering injection pipe
Column；Igniter inside energy tripping in said inner tube column 100.The lower section of the igniter, which is equipped with, can push first sliding sleeve 2
With the opening tool of second sliding sleeve 30.
The opening tool pushes the first sliding sleeve 2 when first sliding sleeve 2 is located at open position, and sliding described first
Set 2 passes through the first sliding sleeve 2 when being located at closed position.The opening tool can be pushed away when second sliding sleeve 30 is located at first position
Dynamic second sliding sleeve 30, and pass through the second sliding sleeve 30 when second sliding sleeve 30 is located at the second position.
In the present embodiment, opening tool is detachably mounted to the lower end of igniter.In the case where meeting card, igniting
Device can be disengaged with the tool of opening, to realize the recycling of igniter.Specifically, can pass through between the tool of opening and igniter
Shear pin or safety joint are connected, and when lifting power more than predetermined value outside well, shear pin or safety joint fracture are realized
The disengaging of opening tool and igniter.Wherein, opening tool has the ontology axially extending along interior tubing string 100, and on the body
Equipped with radially widened lug boss.Opening tool can generally " bottle " shape or " spindle " shape.
In the application embodiment, open position, first position are located in the first sliding sleeve 2 and the second sliding sleeve 30
When, the outer diameter for opening tool (lug boss) is greater than in (formation of the first elastic portion 3) minimum of the first sliding sleeve 2 and the second sliding sleeve 30
Diameter, so that the first sliding sleeve 2 and the second sliding sleeve 30 be pushed to come downwards to closed position, the second position.Then, the first sliding sleeve 2 and second
Sliding sleeve 30 complete it is expanding, internal diameter expand after open tool can pass through.So realize to the first gas injection device 200 and the second gas injection
Opening operation is closed in the expectation of device 400, completes layered gas-injection work.
Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and
The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1.
These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range
" about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality
Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component
Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any
Attribute is all optional.
Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally
Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to
The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
It states, many embodiments and many applications except provided example all will be aobvious and easy for a person skilled in the art
See.Therefore, the range of this introduction should not be determined referring to foregoing description, but should referring to appended claims and this
The full scope of the equivalent that a little claims are possessed determines.For comprehensive purpose, all articles and with reference to including special
The disclosure of benefit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part of subject matter.
Claims (20)
1. a kind of layering injection string characterized by comprising outer tubing string, the interior tubing string being sheathed in the outer tubing string；It is described
Interior tubing string includes the first gas injection device being linked in sequence, sealing device, the second gas injection device；The outer tubing string is equipped with can be by institute
State the cable-passing packer that the oil jacket annulus between outer tubing string and casing separates；The sealing device is by the outer tubing string and inner tube
Annular space between column separates；
First gas injection device includes the first outer tube and the first sliding sleeve in the first outer tube that lengthwise extends；It is described
The tube wall of first outer tube is equipped with the first exhaust through hole；First sliding sleeve can along first outer tube axial movement with from beating
Open position is moved to closed position；First sliding sleeve opens first exhaust through hole when being located at open position；Described
When one sliding sleeve is located at first position, first exhaust through hole is closed；
Second gas injection device includes the second outer tube and the second sliding sleeve in the second outer tube that lengthwise extends；It is described
The tube wall of second outer tube is equipped with the second exhaust through hole；Second sliding sleeve can along second outer tube axial movement with from
One position is moved to the second position；Second sliding sleeve blocks second exhaust through hole when being located at first position；Described
Two sliding sleeves open second exhaust through hole when being located at the second position.
2. layering injection string as described in claim 1, it is characterised in that: the sealing device includes central tube and outer
Cylinder；Palette between the central tube and the outer cylinder；The upper end of the central tube connects first gas injection device, described
The lower end of central tube connects second gas injection device；The outer cylinder is connected on the outer tubing string.
3. layering injection string as claimed in claim 2, it is characterised in that: be fixed on the inner wall of the outer cylinder multiple close
Sealing label trap is located at the tubing seal ring in the center pipe outer wall；Multiple tubing seal rings are axially arranged along first outer tube
Cloth.
4. layering injection string as claimed in claim 3, it is characterised in that: the oil between the two neighboring tubing seal ring
Spacing between seal of tube ring is equal.
5. as claimed in claim 3 layering injection string, it is characterised in that: the outer cylinder include be linked in sequence top connection,
Multiple pipe nipples, lower contact；The outer cylinder is connected on the outer tubing string by the top connection and lower contact；Two neighboring pipe nipple
Be connected the inner groove to be formed and accommodate the tubing seal ring；It is formed between the pipe nipple and the top connection and accommodates the oil pipe
The inner groove of sealing ring；The inner groove for accommodating the tubing seal ring is formed between the pipe nipple and the lower contact.
6. layering injection string a method as claimed in any one of claims 1 to 5, it is characterised in that: first sliding sleeve is located at open position
When, second sliding sleeve is located at first position；When first sliding sleeve is located at closed position, second sliding sleeve is located at second
It sets.
7. layering injection string as claimed in claim 6, it is characterised in that: the inner wall of first outer tube is equipped with first and accommodates
Groove；First sliding sleeve is equipped with the first elastic portion；When first sliding sleeve is located at open position, the described first elastic position
In the top of first pockets, also, first elastic portion is by the inner wall undergauge of first outer tube；Described first
When sliding sleeve is located at closed position, the first elastic portion reset is caught in first pockets and is limited.
8. layering injection string as claimed in claim 7, it is characterised in that: first elastic portion includes being located at described first
Multiple first valve bodies that outer tube is circumferentially arranged；Interval gap is equipped between circumferentially adjacent two the first valve bodies；Described first
Elastic portion in reset state described in the upper end of the first valve body have and can be caught in the first of first pockets and be caught in protrusion.
9. layering injection string as claimed in claim 7, it is characterised in that: first sliding sleeve is connected by the first shear pin
First outer tube is connect, to be located in the open position.
10. layering injection string as claimed in claim 8, it is characterised in that: first outer tube includes first to be connected
Top connection pipe, the first connecting tube, the first lower contact pipe；The lower end inner wall of the first top connection pipe is equipped with the first limited step；
Plane where first limited step is axially vertical with first outer tube；First limited step forms described first
The uper side surface of pockets；The upper end of the first top connection pipe is equipped with internal screw thread；The lower end of the first lower contact pipe is set
There is external screw thread.
11. layering injection string as claimed in claim 6, it is characterised in that: the inner wall of second outer tube, which is equipped with second, to be held
Receive groove；Second sliding sleeve is equipped with the second elastic portion；When second sliding sleeve is located at first position, second elastic portion
Positioned at the top of second pockets, also, second elastic portion is by the inner wall undergauge of second outer tube；Described
When two sliding sleeves are located at first position, the second elastic portion reset is caught in second pockets and is limited.
12. layering injection string as claimed in claim 11, it is characterised in that: second elastic portion includes being located at described the
Multiple second valve bodies that two outer tubes are circumferentially arranged；Interval gap is equipped between circumferentially adjacent two the second valve bodies；Described
Two elastic portions in reset state described in the second valve body upper end have can be caught in the second of second pockets be caught in it is convex
It rises.
13. layering injection string as claimed in claim 11, it is characterised in that: second sliding sleeve passes through the second shear pin
Second outer tube is connected, to be located in the first position.
14. layering injection string as claimed in claim 12, it is characterised in that: second sliding sleeve is equipped with intercommunicating pore；Institute
The outer wall for stating the second sliding sleeve is equipped with closure part in the lower section of the intercommunicating pore；The closure part includes the first sealing ring and is located at the
The second sealing ring below one sealing ring；Spacing distance between first sealing ring and second sealing ring is greater than or waits
In second exhaust through hole along the length of the second outer tube axial direction；When second sliding sleeve is located at first position, described
Two exhaust through holes are between first sealing ring and second sealing ring, to be blocked；Second sliding sleeve is located at the
When two positions, the intercommunicating pore with second exhaust through hole is radially aligned is connected to.
15. layering injection string as claimed in claim 14, it is characterised in that: second outer tube includes second to be connected
Top connection pipe, the second connecting tube, the second lower contact pipe；The lower end inner wall of the second top connection pipe is equipped with the second limited step；
Plane where second limited step is axially vertical with second outer tube；Second limited step forms described second
The uper side surface of pockets；The upper end of the second top connection pipe is equipped with internal screw thread；The lower end of the second lower contact pipe is set
There is external screw thread.
16. layering injection string a method as claimed in any one of claims 1 to 5, it is characterised in that: the cable-passing packer is Y361
Packer.
17. layering injection string as claimed in claim 16, it is characterised in that: the outer tubing string includes the first oil pipe；It is described
Interior tubing string includes the second oil pipe that outer diameter is less than the first oil pipe outer diameter.
18. layering injection string as claimed in claim 17, it is characterised in that: second oil pipe is insulated tubing.
19. layering injection string a method as claimed in any one of claims 1 to 5, it is characterised in that: the lower end of the outer tubing string blocks；Institute
The lower end for stating interior tubing string blocks.
20. a kind of layering injected system characterized by comprising
Layering injection string as described in claim 1-19 is any；
Igniter inside energy tripping in said inner tube column；The lower section of the igniter, which is equipped with, can push first sliding sleeve and institute
State the opening tool of the second sliding sleeve；The opening tool pushes the first sliding sleeve when first sliding sleeve is located at open position, and
Pass through the first sliding sleeve when first sliding sleeve is located at closed position；The opening tool can be located at first in second sliding sleeve
The second sliding sleeve is pushed when position, and passes through the second sliding sleeve when second sliding sleeve is located at the second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861169.4A CN109138942A (en) | 2018-08-01 | 2018-08-01 | Separate-layer injection pipe column and separate-layer injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810861169.4A CN109138942A (en) | 2018-08-01 | 2018-08-01 | Separate-layer injection pipe column and separate-layer injection system |
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| Publication Number | Publication Date |
|---|---|
| CN109138942A true CN109138942A (en) | 2019-01-04 |
Family
ID=64798465
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810861169.4A Pending CN109138942A (en) | 2018-08-01 | 2018-08-01 | Separate-layer injection pipe column and separate-layer injection system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425174A (en) * | 2019-01-09 | 2020-07-17 | 中国石油天然气股份有限公司 | Thermal concentric layered electric ignition process pipe column |
| CN111502625A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Layered fireflood chemical ignition concentric double-pipe column and mining method |
| CN111927416A (en) * | 2019-05-13 | 2020-11-13 | 中国石油天然气股份有限公司 | Layered ignition gas injection oil jacket system |
| CN114198076A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Multi-layer fireflood injection pipe column and ignition method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075134A (en) * | 2013-01-18 | 2013-05-01 | 中国石油天然气股份有限公司 | Automatic air and steam selecting and matching injection pipe column |
| CN203925459U (en) * | 2014-04-28 | 2014-11-05 | 中国石油天然气股份有限公司 | Concentric layering ignition gas injection pipe column |
| CN204252989U (en) * | 2014-11-05 | 2015-04-08 | 中国石油天然气股份有限公司 | Fireflooding layering electric ignition process tubular column |
| CN105134153A (en) * | 2015-09-07 | 2015-12-09 | 中国石油天然气股份有限公司 | Fireflooding ignition method and pipe column thereof |
| CN105275430A (en) * | 2015-10-15 | 2016-01-27 | 中国石油天然气股份有限公司 | Sliding sleeve and layered injection string |
| CN105696975A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Elasticity limiting full-bore switch sliding sleeve |
| US20170114623A1 (en) * | 2014-12-04 | 2017-04-27 | Harris Corporation | Hydrocarbon resource heating system including choke fluid dispensers and related methods |
| CN206458444U (en) * | 2016-12-15 | 2017-09-01 | 中国石油天然气股份有限公司 | Layered electric ignition channel controller for burning oil field and layered electric ignition channel for burning oil field |
-
2018
- 2018-08-01 CN CN201810861169.4A patent/CN109138942A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075134A (en) * | 2013-01-18 | 2013-05-01 | 中国石油天然气股份有限公司 | Automatic air and steam selecting and matching injection pipe column |
| CN203925459U (en) * | 2014-04-28 | 2014-11-05 | 中国石油天然气股份有限公司 | Concentric layering ignition gas injection pipe column |
| CN204252989U (en) * | 2014-11-05 | 2015-04-08 | 中国石油天然气股份有限公司 | Fireflooding layering electric ignition process tubular column |
| US20170114623A1 (en) * | 2014-12-04 | 2017-04-27 | Harris Corporation | Hydrocarbon resource heating system including choke fluid dispensers and related methods |
| CN105134153A (en) * | 2015-09-07 | 2015-12-09 | 中国石油天然气股份有限公司 | Fireflooding ignition method and pipe column thereof |
| CN105275430A (en) * | 2015-10-15 | 2016-01-27 | 中国石油天然气股份有限公司 | Sliding sleeve and layered injection string |
| CN105696975A (en) * | 2016-01-20 | 2016-06-22 | 中国石油化工股份有限公司 | Elasticity limiting full-bore switch sliding sleeve |
| CN206458444U (en) * | 2016-12-15 | 2017-09-01 | 中国石油天然气股份有限公司 | Layered electric ignition channel controller for burning oil field and layered electric ignition channel for burning oil field |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425174A (en) * | 2019-01-09 | 2020-07-17 | 中国石油天然气股份有限公司 | Thermal concentric layered electric ignition process pipe column |
| CN111425174B (en) * | 2019-01-09 | 2022-02-01 | 中国石油天然气股份有限公司 | Thermal concentric layered electric ignition process pipe column |
| CN111502625A (en) * | 2019-01-30 | 2020-08-07 | 中国石油天然气股份有限公司 | Layered fireflood chemical ignition concentric double-pipe column and mining method |
| CN111502625B (en) * | 2019-01-30 | 2022-07-05 | 中国石油天然气股份有限公司 | Layered fireflood chemical ignition concentric double-pipe column and mining method |
| CN111927416A (en) * | 2019-05-13 | 2020-11-13 | 中国石油天然气股份有限公司 | Layered ignition gas injection oil jacket system |
| CN114198076A (en) * | 2021-11-26 | 2022-03-18 | 中国石油天然气股份有限公司 | Multi-layer fireflood injection pipe column and ignition method thereof |
| CN114198076B (en) * | 2021-11-26 | 2024-05-10 | 中国石油天然气股份有限公司 | Multi-layer fireflood injection pipe column and ignition method thereof |
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Application publication date: 20190104 |