CN109138941A - 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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- CN109138941A CN109138941A CN201810831894.7A CN201810831894A CN109138941A CN 109138941 A CN109138941 A CN 109138941A CN 201810831894 A CN201810831894 A CN 201810831894A CN 109138941 A CN109138941 A CN 109138941A
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- outer tube
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- layering
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- 238000002347 injection Methods 0.000 title claims abstract description 140
- 239000007924 injection Substances 0.000 title claims abstract description 140
- 238000007789 sealing Methods 0.000 claims description 29
- 239000011148 porous material Substances 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000010009 beating Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 51
- 239000010410 layer Substances 0.000 description 41
- 239000000243 solution Substances 0.000 description 13
- 239000004615 ingredient Substances 0.000 description 10
- 238000012856 packing Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion 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
- 238000000034 method Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 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
- 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
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—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 oil pipe, the first gas injection device, the cable-passing packer and the second gas injection device are sequentially connected to the oil pipe; the first gas injection device comprises a first outer tube extending lengthwise and a first sliding sleeve positioned in the first outer tube; a first air outlet through hole is formed in the pipe wall of the first outer pipe; when the first sliding sleeve is positioned at an opening position, the first air outlet through hole is opened; when the first sliding sleeve is positioned at the closing position, the first air outlet through hole is closed; the second gas injection device comprises a second outer tube extending lengthwise and a second sliding sleeve positioned in the second outer tube; a second air outlet through hole is formed in the pipe wall of the second outer pipe; the second air outlet through hole is plugged when the second sliding sleeve is positioned at the first position; and when the second sliding sleeve is positioned at the second position, the second air outlet through hole is opened.
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: oil pipe, the first gas injection device on oil pipe that is linked in sequence cross cable packing
Device, the second gas injection device；The cable-passing packer is used to separate the oil jacket annulus between the oil pipe and casing；
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 closed 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 solution, when first sliding sleeve is located at open position, second sliding sleeve is located at first
It sets, also, annular space of the layering injection string above the cable-passing packer between described sleeve pipe forms the first note
Gas channel；When first sliding sleeve is located at closed position, second sliding sleeve is located at the second position, also, the layering is injected
The second gas injection channel is formed inside tubing string.
As a preferred solution, the inner wall of first outer tube is equipped with the first pockets；On first sliding sleeve
Equipped with the first elastic portion；When first sliding sleeve is located at open position, first elastic portion is located at first pockets
Top, also, first elastic portion is by the inner wall undergauge of first outer tube；First sliding sleeve is located at closed position
When, the first elastic portion reset is caught in first pockets and is limited.
As a preferred solution, first elastic portion include be located at first outer tube circumferentially arrange it is multiple
First valve body；Interval gap is equipped between circumferentially adjacent two the first valve bodies；First elastic portion is in reset state when institute
The upper end for stating the first valve body has and can be caught in the first of first pockets and be caught in protrusion.
As a preferred solution, first sliding sleeve connects first outer tube by the first shear pin, with fixed
Position is in the open position.
As a preferred solution, first outer tube includes the first top connection pipe being connected, the first connecting tube,
Junction block once；The lower end inner wall of the first top connection pipe is equipped with the first limited step；It is flat where first limited step
Face is axially vertical with first outer tube；First limited step forms the uper side surface of first pockets；Institute
The upper end for stating 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 solution, the inner wall of second outer tube is equipped with the second pockets；On second sliding sleeve
Equipped with the second elastic portion；When second sliding sleeve is located at first position, second elastic portion is located at second pockets
Top, also, second elastic portion is by the inner wall undergauge of second outer tube；Second sliding sleeve is located at first position
When, the second elastic portion reset is caught in second pockets and is limited.
As a preferred solution, second elastic portion include be located at second outer tube circumferentially arrange it is multiple
Second valve body；Interval gap is equipped between circumferentially adjacent two the second valve bodies；Second elastic portion is in reset state when institute
The upper end for stating the second valve body has and can be caught in the second of second pockets and be caught in protrusion.
As a preferred solution, second sliding sleeve connects second outer tube by the second shear pin, with fixed
Position is in the first position.
As a preferred solution, second sliding sleeve is equipped with intercommunicating pore；The outer wall of second sliding sleeve is described
The lower section of intercommunicating pore is equipped with closure part；The closure part includes the first sealing ring and the second sealing below the first sealing ring
Ring；Spacing distance between first sealing ring and second sealing ring is greater than or equal to second exhaust through hole along institute
State 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 first
Between sealing ring and second sealing ring, to be blocked；When second sliding sleeve is located at the second position, the intercommunicating pore and institute
State the radially aligned connection of the second exhaust through hole.
As a preferred solution, second outer tube includes the second top connection pipe being connected, the second connecting tube,
Two lower contact pipes；The lower end inner wall of the second top connection pipe is equipped with the second limited step；It is flat where second limited step
Face is axially vertical with second outer tube；Second limited step forms the uper side surface of second pockets；Institute
The upper end for stating 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 solution, the cable-passing packer is Y361 packer.
A kind of layering injected system, comprising:
As above any layering injection string；
Igniter inside injection string described in energy tripping in；The lower section of the igniter, which is equipped with, can push described first to slide
The opening tool of set and 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 by being equipped with the first gas injection device and the second gas injection device, the first gas injection
Device can be opened 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 under
It is closed when layer gas injection, 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 annulus 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.
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.
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. 5.A kind of layering injection string is provided in the application embodiment, comprising: oil pipe 100, sequence
The first gas injection device 200, cable-passing packer 300, the second gas injection device 400 being connected on the oil pipe 100；It is described excessively electric
Cable packer 300 is used to separate the oil jacket annulus between the oil pipe 100 and casing 500.
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 closed 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.Cable-passing packer 300 is set to be separated to form oil jacket annulus and is respectively corresponded
The upper layer oil jacket annulus 510 (the first gas injection channel 510) and lower layer's oil jacket annulus 520 of lower oil reservoir, form two gas injection accesses.
Wherein, the corresponding connection upper layer oil jacket annulus 510 of the first gas injection device 200.The corresponding connection lower layer's oil jacket ring of second gas injection device 400
Sky 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 oil pipe 100 using wellhead assembly 800 (Wellhead tree),
It can be to oil jacket annulus (the first gas injection channel is communicated with wellhead assembly) gas injection.In the application embodiment, the igniter
Lower section be equipped with and can push the opening tool (not shown) of first sliding sleeve 2 and second sliding sleeve 30.Transfer igniter
(not shown) and opening tool, will be pushed into closed position under the first sliding sleeve 2, the first gas injection device 200 are closed, at this point, upper layer
Oil jacket annulus 510 forms the first gas injection channel, can maintain combustion in situ by the first gas injection channel to top oil reservoir gas injection
Air requirements.
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 by being entirely layered injection string (the second gas injection
Channel) it lights a fire to 802 gas injection of lower layer's oil reservoir, and by igniter to lower layer's oil reservoir 802, to finally realize layering igniting gas injection
Exploitation.
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, the 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
801 gas injection of upper layer oil reservoir, and closed in lower layer's gas injection, it is real by layering injection string that the second gas injection device 400 is opened at this time
Now to 802 gas injection of lower layer's oil reservoir, and still can be to 801 gas injection of upper layer oil reservoir by upper layer oil jacket annulus 510.
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 the first sliding sleeve 2 can be passed through when first sliding sleeve 2 is located at closed position.The opening tool can be sliding described second
Set 30 pushes the second sliding sleeve 30 when being located at first position, and passes through the second sliding sleeve when second sliding sleeve 30 is located at the second position
30。
In the application embodiment, oil pipe 100 may include plain end oil well pipe, insulated tubing.Wherein insulated tubing length
It can match for igniting oil reservoir length (height), other oil pipes can be plain end oil well pipe.The layering can be infused when in use
Enter in tubing string tripping in casing 500, the tripping in measuring temperature wire cable 600 in oil jacket annulus (annular space between oil pipe 100 and casing 500),
The packing element of cable-passing packer 300 can be passed 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 packer 300.
In the application embodiment, cable-passing packer 300 is thermal packer 300.By using the packer
300 can be such that cable 600 passes through and protect cable 600 not by the damage of liquid stream, and can completely retain sealing structure (packing element), make
The sealing performance of the 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, when first sliding sleeve 2 as shown in Figure 2 is located at open position, second sliding sleeve
30 are located at first position.Also, the layering injection string above the cable-passing packer 300 with described sleeve pipe 500 it
Between annular space formed the first gas injection channel 510.It is realized by the first gas injection channel 510 and continues up portion's oil reservoir gas injection.
When first sliding sleeve 2 is located at closed position, second sliding sleeve 30 is located at the second position, also, the layering
The second gas injection channel is formed inside injection string.Since the first sliding sleeve 2 is in the closed position, the second gas injection channel and the first gas injection
Channel 510 is spaced by cable-passing packer 300, not connected.That is, when the first gas injection device 200 opens gas injection, second
Gas injection device 400 is in close state as shown in Figure 4.First gas injection device 200 closes gas injection (can be from oil jacket annulus gas injection),
Second gas injection device 400 opens gas injection.The switch state of first gas injection device 200 and the second gas injection device 400 is interrelated, from
And realize between layered gas-injection independently of each other, it 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 injection string is equipped with silk plug 700, and tubing string bottom is blocked.Tool
Body, 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.
A kind of layering injected system is also provided in the application embodiment, comprising: as above any layering injection pipe
Column；Igniter inside injection string described in energy tripping in.The lower section of the igniter, which is equipped with, can push 2 He of the first sliding sleeve
The opening tool of second sliding sleeve 30.Wherein, which further includes the casing being sheathed on outside layering injection string
500。
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 oil pipe 100, and sets on the body
There is 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 (13)
1. a kind of layering injection string characterized by comprising oil pipe, be linked in sequence the first gas injection dress on the oil pipe
It sets, cable-passing packer, the second gas injection device；The cable-passing packer is used for the oil jacket ring between the oil pipe and casing
Space division every；
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 closed 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: when first sliding sleeve is located at open position, institute
State the second sliding sleeve and be located at first position, also, the layering injection string above the cable-passing packer with described sleeve pipe
Between annular space formed the first gas injection channel；When first sliding sleeve is located at closed position, second sliding sleeve is located at second
It sets, also, forms the second gas injection channel inside the layering injection string.
3. layering injection string as claimed in claim 1 or 2, it is characterised in that: the inner wall of first outer tube is equipped with first
Pockets；First sliding sleeve is equipped with the first elastic portion；When first sliding sleeve is located at open position, first elasticity
Portion is located at the top of first pockets, also, first elastic portion is by the inner wall undergauge of first outer tube；It is described
When first sliding sleeve is located at closed position, the first elastic portion reset is caught in first pockets and is limited.
4. layering injection string as claimed in claim 3, 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.
5. layering injection string as claimed in claim 3, 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.
6. layering injection string as claimed in claim 4, it is characterised in that: first outer tube includes on first to be connected
Junction block, 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；Institute
Plane where stating the first limited step is axially vertical with first outer tube；First limited step, which forms described first, to be held
Receive the uper side surface of groove；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.
7. layering injection string as claimed in claim 1 or 2, it is characterised in that: the inner wall of second outer tube is equipped with second
Pockets；Second sliding sleeve is equipped with the second elastic portion；When second sliding sleeve is located at first position, second elasticity
Portion is located at the top of second pockets, also, second elastic portion is by the inner wall undergauge of second outer tube；It is described
When second sliding sleeve is located at first position, the second elastic portion reset is caught in second pockets and is limited.
8. layering injection string as claimed in claim 7, it is characterised in that: second elastic portion includes being located at described second
Multiple second valve bodies that outer tube is circumferentially arranged；Interval gap is equipped between circumferentially adjacent two the second valve bodies；Described second
Elastic portion in reset state described in the upper end of the second valve body have and can be caught in the second of second pockets and be caught in protrusion.
9. layering injection string as claimed in claim 7, it is characterised in that: second sliding sleeve is connected by the second shear pin
Second outer tube is connect, to be located in the first position.
10. layering injection string as claimed in claim 8, it is characterised in that: second sliding sleeve is equipped with intercommunicating pore；It is described
The outer wall of second sliding sleeve is equipped with closure part in the lower section of the intercommunicating pore；The closure part is including the first sealing ring and positioned at first
The second sealing ring below sealing ring；Spacing distance between first sealing ring and second sealing ring is greater than or equal to
Length of second exhaust through hole along the second outer tube axial direction；When second sliding sleeve is located at first position, described second
Exhaust through hole is between first sealing ring and second sealing ring, to be blocked；Second sliding sleeve is located at second
When position, the intercommunicating pore with second exhaust through hole is radially aligned is connected to.
11. layering injection string as claimed in claim 10, 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.
12. layering injection string as described in claim 1, it is characterised in that: the cable-passing packer is Y361 packer.
13. a kind of layering injected system characterized by comprising
Layering injection string as claimed in claim 1；
Igniter inside injection string described in energy tripping in；The lower section of the igniter be equipped with can push first sliding sleeve and
The opening tool of 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 the in second sliding sleeve
The second sliding sleeve is pushed when one 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 |
|---|---|---|---|
| CN201810831894.7A CN109138941A (en) | 2018-07-26 | 2018-07-26 | Separate-layer injection pipe column and separate-layer injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810831894.7A CN109138941A (en) | 2018-07-26 | 2018-07-26 | Separate-layer injection pipe column and separate-layer injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109138941A true CN109138941A (en) | 2019-01-04 |
Family
ID=64797983
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810831894.7A Pending CN109138941A (en) | 2018-07-26 | 2018-07-26 | Separate-layer injection pipe column and separate-layer injection system |
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| CN (1) | CN109138941A (en) |
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Application publication date: 20190104 |