CN205591905U - A self -adaptation formula stream entry control device for oil well - Google Patents
A self -adaptation formula stream entry control device for oil well Download PDFInfo
- Publication number
- CN205591905U CN205591905U CN201620193401.8U CN201620193401U CN205591905U CN 205591905 U CN205591905 U CN 205591905U CN 201620193401 U CN201620193401 U CN 201620193401U CN 205591905 U CN205591905 U CN 205591905U
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- base tube
- control device
- self
- oil well
- wall
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Abstract
The utility model relates to a self -adaptation formula stream entry control device for oil well, including the outer parent tube interior parent tube inside with wearing to locate outer parent tube, the one end opening of outer parent tube, the other end of outer parent tube sealed with being of the outer wall of interior parent tube to be connected, and the position that is close to the other end of outer parent tube on the lateral wall of interior parent tube is equipped with the thru hole that link up, in the annular space between outer parent tube and the interior parent tube, and be located that parallel interval is provided with the annular cardboard that a plurality of circumference were equipped with the breach between the open end of thru hole and outer parent tube, the lateral wall of annular cardboard and the inner wall sealing connection of outer parent tube, the inside wall of annular cardboard and the outer wall sealing connection of interior parent tube, the circumference both sides of breach are provided with can follow chance water that circumference the stretches out and draws back unit that expands. The device can overcome little, the easy coning inefficacy scheduling problem of the structure complicacy, the application scope that exist among the prior art, the device simple structure prevents effectively that the coning became invalid, and application scope is wider.
Description
Technical field
This utility model relates to the device improving Development Response of Oilfield, particularly relates to a kind of self adaptation for oil well
Formula inflow control device.
Background technology
In long horizontal well, due to " heel end effect " and/or the impact of reservoir heterogeneity, oil well is at some
The yield of position to be significantly larger than other positions, thus the uneven production profile produced may cause pit shaft to exist
These position premature water breakthrough/gas.Coning once occurs, and owing to the flowing of other positions is restricted, oil well produces
Amount will significantly reduce.In order to eliminate this energy imbalance, common method has segmenting perforating complete with variable density perforation
Well, central canal completion etc..But these methods are limited to the ability of regulation and control of inflow profile, it is difficult to ensure production profile
The most uniform.
The nineties in last century, Norsk Hydro (Norway's Hydro) company have developed inflow control device at first in early days
(ICDs), and in 1998 Troll oil field it is successfully applied to first.End 2013, the most in succession grind
Send different types of inflow control device (ICDs), including passive type inflow control device (PICD) and self adaptation
Inflow control device (AICD).Wherein, passive type inflow control device (PICD), become a mandarin by equilibrium and delay to see
Water/gas, but, once there is coning in water/gas mutually, owing to its viscosity is relatively low, will take oil well completely, and suppresses oil
The flowing of phase, causes inflow control device (ICDs) to lose efficacy, and reduces oil well output.Existing self adaptation flows into and controls
Device (AICD) has balance chip self adaptation inflow control device, and its mobile equilibrium sheet easily breaks down, and can not have
Effect controlling water coning.Also has a kind of EquiFlowTMAICD, it utilizes the equilibrium relation of fluid inertia force and stickiness power
Change fluid is by runner during device and resistance, but the viscosity scope of application is little, is required for different reservoir condition special
Door design.Meanwhile, all there is baroque problem in both the above self adaptation inflow control device (AICD).
Thus, the present inventor, by being engaged in experience and the practice of relevant industries for many years, proposes a kind of adaptive for oil well
Answer formula inflow control device, to overcome the defect of prior art.
Utility model content
The purpose of this utility model is to provide a kind of self-adapting type inflow control device for oil well, it is possible to gram
Take present in prior art the problems such as structure complexity, scope of application coning inefficacy little, easy, this apparatus structure letter
Single, effectively prevent coning to lose efficacy, the scope of application is wider.
The purpose of this utility model is achieved in that a kind of self-adapting type inflow control device for oil well,
The described self-adapting type inflow control device for oil well includes outer base tube and is arranged in described outer substrate tube
Interior base tube, the one end open of described outer base tube, the outer wall of the other end of described outer base tube and described interior base tube in
Closing and connect, on the sidewall of described interior base tube, the position of the other end near described outer base tube is provided with through saturating
Hole；In annular space between described outer base tube and described interior base tube, and it is positioned at described open-work and described outer base tube
Opening between parallel interval be provided with multiple annular clamp being circumferentially with breach, outside described annular clamp
Sidewall is connected with the inner wall sealing of described outer base tube, the medial wall of described annular clamp and the outer wall of described interior base tube
Being tightly connected, the circumferential both sides of described breach are provided with the water-swellable unit that can circumferentially stretch.
In a better embodiment of the present utility model, described water-swellable unit is by water-swellable material structure
Become.
In a better embodiment of the present utility model, the inwall of described outer base tube, described breach, described in
The outer wall of base tube constitutes fluidic channel, adjacent two described annular clamps, the inwall of described outer base tube, described
The outer wall of interior base tube constitutes current stabilization passage, and described fluidic channel and described current stabilization passage alternate setting.
In a better embodiment of the present utility model, each described fluidic channel is located along the same line.
In a better embodiment of the present utility model, after described water-swellable unit expanse, described in penetrate
The area of passage of circulation road is contracted to the 0～90% of initial area of passage.
In a better embodiment of the present utility model, the axial length of described current stabilization passage is that described jet leads to
5 times of the axial length in road.
In a better embodiment of the present utility model, the material of described annular clamp is rustless steel.
In a better embodiment of the present utility model, described water-swellable unit is arranged at by rubber element
The circumferential both sides of the breach of described annular clamp.
In a better embodiment of the present utility model, the outer wall of described annular clamp is provided with circumferential recess,
Described circumferential recess be internally provided with inner wall sealing with described outer base tube against sealing joint strip.
In a better embodiment of the present utility model, the inwall of one end of described outer base tube and described interior base tube
Outer wall between formed fluid annular entry.
From the above mentioned, the self-adapting type inflow control device for oil well that this utility model provides, based on jet
Principle and water-swellable material harmomegathus principle, this device is capable of identify that fluid type and automatically adjusts according to fluid properties
Whole its by the flow resistance of device, the annular space between interior base tube, outer base tube is provided with annular clamp, logical
Cross the narrowed gap on annular clamp and form fluidic channel, and be provided with in the both sides of the narrowed gap of annular clamp
Water-swellable unit, before non-water breakthrough, device convection cell has certain resistance, it is possible to offset heel end effect and reservoir
The impact of anisotropism, after water breakthrough, flow resistance will dramatically increase, and the flowing of water exit interval is significantly inhibited,
Ensure Oil/gas Well long term stable production；This apparatus structure is simple, and cost puts into low, is suitable for liquid scope wide, is conducive to
It is widely popularized use.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating this utility model and explaining, not limit this utility model
Scope.Wherein:
Fig. 1: the isometric section view for the self-adapting type inflow control device for oil well of the present utility model is illustrated
Figure.
Fig. 2: for the cross-sectional schematic of the self-adapting type inflow control device for oil well of the present utility model.
Fig. 3: for the A in Fig. 2 to schematic diagram.
Fig. 4: use view for the self-adapting type inflow control device for oil well of the present utility model.
In figure: 100, for the self-adapting type inflow control device of oil well；1, outer base tube；10, fluid annular
Entrance；11, end plate；111, end plate via；2, interior base tube；21, open-work；3, annular clamp；31、
Breach；32, circumferential recess；33, sealing joint strip；4, water-swellable unit；51, fluidic channel；52、
Current stabilization passage；8, horizontal well；9, oil pipe.
Detailed description of the invention
In order to technical characteristic of the present utility model, purpose and effect are more clearly understood from, now compare accompanying drawing
Detailed description of the invention of the present utility model is described.
As shown in Figure 1 and Figure 2, the self-adapting type inflow control device 100 for oil well of the present utility model,
Including outer base tube 1 be arranged in the interior base tube 2 within outer base tube 1, outer base tube 1 and interior base tube 2 are coaxially disposed,
The one end open of outer base tube 1, being connected in closing of the outer wall of the other end of outer base tube 1 and interior base tube 2, interior base
The two ends of pipe 2 can connected pipes 9, or with another for the self-adapting type inflow control device 100 of oil well
Interior base tube is connected；In the present embodiment, between inwall and the outer wall of interior base tube 2 of one end of outer base tube 1
Forming fluid annular entry 10, the other end of outer base tube 1 is provided with and the outer base tube 2 integrated end plate of body
11, end plate 11 is provided with and seals the end plate via 111 wearing interior base tube 2；On the sidewall of interior base tube 2 close
The position of the other end of outer base tube 1 is provided with through open-work 21, and the liquid in horizontal well 8 is through fluid annular entry
10 enter the annular space between outer base tubes 1 and interior base tube 2, after enter inside interior base tube 2 through open-work 21,
Oil pipe 9 (prior art) through being connected with interior base tube 2 returns to ground again；Between outer base tube 1 and interior base tube 2
Annular space in, and parallel interval is provided with multiple week between the opening of open-work 21 and outer base tube 2
To being provided with the annular clamp 3 of breach 31, in the present embodiment, the material of annular clamp 3 is rustless steel；Ring
The lateral wall of shape clamp 3 is connected with the inner wall sealing of outer base tube 1, the medial wall of annular clamp 3 and interior base tube 2
Outer wall be tightly connected, the circumferential both sides of breach 31 (i.e. the two ends of annular clamp 3) being provided with can be circumferentially
Flexible water-swellable unit 4.
Further, as shown in Figure 1, Figure 2, Figure 3 shows, the inwall of outer base tube 1, breach 31, interior base tube 2
Outer wall constitutes fluidic channel 51, outside two adjacent annular clamps 3, the inwall of outer base tube 1, interior base tubes 2
Wall constitutes current stabilization passage 52, and fluidic channel 51 and current stabilization passage 52 alternate setting.In the present embodiment,
Each fluidic channel 51 is located along the same line, and in one embodiment, the axial length of current stabilization passage 52 is
5 times of the axial length of fluidic channel 51 so that liquid can substantially stabilized flow velocity after fluidic channel 51.
Further, after water-swellable unit 4 expanse, the area of passage of fluidic channel 51 is contracted to initially
The 0～90% of area of passage.The 5%-20% of the circumferential width of breach 31 a size of annular clamp 3 girth, it is ensured that
Fluidic channel 51 can be formed and be effectively formed liquid jet, and meets water-swellable unit 4 expansion reduction jet
The requirement of the area of passage of passage 51.When liquid aqueous rate be zero or the least time, liquid through fluid annular
Entrance 10 enters the annular space between outer base tube 1 and interior base tube 2, and water-swellable unit 4 does not expands,
Liquid via after fluidic channel 51 in current stabilization passage 52 jet core quickly disappear, flowing is stable, flow resistance
Less；When liquid aqueous rate increases, liquid enters outer base tube 1 and interior base tube 2 through fluid annular entry 10
Between annular space, water-swellable unit 4 expands, and fluidic channel 51 area reduces, and is formed continuously
Jet, flow resistance is bigger；When liquid aqueous rate reaches the critical moisture content set, liquid is through fluid ring
Shape entrance 10 enters the annular space between outer base tube 1 and interior base tube 2, and water-swellable unit 4 is expanded to penetrate
The breach 31 of circulation road 51 is closed, and flow resistance is infinitely great；After reaching critical moisture content breach 31 closing,
If the liquid aqueous rate of reservoir entered declines, water-swellable unit 4 volume slowly reduces, it is possible to make liquid again
Secondary recovery is flowed.Water-swellable unit 4 produces expansion in various degree according to the moisture content that liquid is different, aqueous
Rate is the highest, and the area of passage of fluidic channel 51 is the least, and liquid flowing resistance is the biggest, so can effectively suppress
Aqueous phase rapidly enters in interior base tube 2, thus ensures that Oil/gas Well is steady in a long-term.
Further, as shown in Figure 1, Figure 3, water-swellable unit 4 is made up of water-swellable material, such as, meet water swollen
Swollen rubber PZ-250, in one embodiment, its sectional dimension is 30mm*20mm.Water-swellable unit 4 leads to
Cross the circumferential both sides that rubber element (not shown) is arranged at the breach 31 of annular clamp 3, be embodied as one
In example, the circumferential both sides of the breach 31 of annular clamp 3 are provided with prominent fine needle, and water-swellable unit 4 is by inserting
Mode fix；In another specific embodiment, the circumferential both sides of breach 31 are provided with draw-in groove, water-swellable unit 4
By connecting and fixing.
Further, annular clamp 3 and interior base tube 2 are integrally machined molding, and annular clamp 3 can also pass through other
Mode is sealedly and fixedly connected on the outer wall of interior base tube 2 (such as welding etc.).
Further, as in figure 2 it is shown, the outer wall of annular clamp 3 is provided with circumferential recess 32, circumferential recess 32
Be internally provided with inner wall sealing with outer base tube 1 against sealing joint strip 33 (can also be O-ring seal).
Sealing joint strip 33 guarantees the sealing between annular clamp 3 and outer base tube 1, it is to avoid in well, liquid is directly entered
Base tube 2 is internal.
As shown in Figure 4, the self-adapting type inflow control device 100 for oil well of the present utility model in use,
It is usually multiple concatenation (each interior base tube can mutually be concatenated or be connected by oil pipe) simultaneously to use, horizontal well
8 product fluid enter the annular space between outer base tube 1 and interior base tube 2, annular snap through fluid annular entry 10
Water-swellable unit 4 at the breach 31 of plate 3 produces expansions in various degree according to the difference of liquid aqueous rate,
When liquid aqueous rate be zero or the least time, liquid enters outer base tube 1 and Nei Ji through fluid annular entry 10
Annular space between pipe 2, water-swellable unit 4 does not expands, liquid via after fluidic channel 51
In current stabilization passage 52, jet core quickly disappears, and flowing is stable, and flow resistance is less；When liquid aqueous rate increases
Time, liquid enters the annular space between outer base tube 1 and interior base tube 2 through fluid annular entry 10, meets water
Expansion cell 4 expands, and fluidic channel 51 area reduces, and forms solid jet, and flow resistance is bigger；
When liquid aqueous rate reaches the critical moisture content set, liquid enters outer base tube 1 through fluid annular entry 10
And the annular space between interior base tube 2, water-swellable unit 4 is expanded to the breach 31 of fluidic channel 51 and closes,
Flow resistance is infinitely great；After reaching critical moisture content breach 31 closing, if the reservoir entered is liquid aqueous
Rate declines, and water-swellable unit 4 volume slowly reduces, it is possible to make liquid again recover flowing.Horizontal well 8 produces
Going out liquid, to enter interior base tube 2 through open-work 21 after fluidic channel 51 and current stabilization passage 52 internal, then through with
The oil pipe 9 (prior art) that interior base tube 2 connects returns to ground.
From the above mentioned, the self-adapting type inflow control device for oil well that this utility model provides, based on jet
Principle and water-swellable material harmomegathus principle, this device is capable of identify that fluid type and automatically adjusts according to fluid properties
Whole its by the flow resistance of device, the annular space between interior base tube, outer base tube is provided with annular clamp, logical
Cross the narrowed gap on annular clamp and form fluidic channel, and be provided with in the both sides of the narrowed gap of annular clamp
Water-swellable unit, before non-water breakthrough, device convection cell has certain resistance, it is possible to offset heel end effect and reservoir
The impact of anisotropism, after water breakthrough, flow resistance will dramatically increase, and the flowing of water exit interval is significantly inhibited,
Ensure Oil/gas Well long term stable production；This apparatus structure is simple, and cost puts into low, is suitable for liquid scope wide, is conducive to
It is widely popularized use.
The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to this utility model
Scope.Any those skilled in the art, institute on the premise of without departing from design of the present utility model and principle
The equivalent variations made and amendment, all should belong to the scope of this utility model protection.
Claims (10)
1. the self-adapting type inflow control device for oil well, it is characterised in that: described for oil well
Self-adapting type inflow control device includes outer base tube and is arranged in the interior base tube of described outer substrate tube, described outer base
The one end open of pipe, being connected in closing of the outer wall of the other end of described outer base tube and described interior base tube, described interior
On the sidewall of base tube, the position of the other end of close described outer base tube is provided with through open-work；Described outer base tube and institute
State in the annular space between interior base tube, and between described open-work with the opening of described outer base tube parallel
Every being provided with multiple annular clamp being circumferentially with breach, the lateral wall of described annular clamp and described outer base tube
Inner wall sealing connects, and the described annular medial wall of clamp is tightly connected with the outer wall of described interior base tube, described breach
Circumferential both sides be provided with the water-swellable unit that can circumferentially stretch.
2. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
Described water-swellable unit is made up of water-swellable material.
3. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
The inwall of described outer base tube, described breach, the outer wall of described interior base tube constitute fluidic channel, two adjacent institutes
Stating the outer wall composition current stabilization passage of annular clamp, the inwall of described outer base tube, described interior base tube, described jet leads to
Road and described current stabilization passage alternate setting.
4. the self-adapting type inflow control device for oil well as claimed in claim 3, it is characterised in that:
Each described fluidic channel is located along the same line.
5. the self-adapting type inflow control device for oil well as claimed in claim 3, it is characterised in that:
After described water-swellable unit expanse, the area of passage of described fluidic channel is contracted to initial area of passage
0～90%.
6. the self-adapting type inflow control device for oil well as claimed in claim 3, it is characterised in that:
5 times of the axial length that axial length is described fluidic channel of described current stabilization passage.
7. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
The material of described annular clamp is rustless steel.
8. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
Described water-swellable unit is arranged at the circumferential both sides of the breach of described annular clamp by rubber element.
9. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
The outer wall of described annular clamp is provided with circumferential recess, and described circumferential recess is internally provided with and described outer base tube
Inner wall sealing against sealing joint strip.
10. the self-adapting type inflow control device for oil well as claimed in claim 1, it is characterised in that:
Fluid annular entry is formed between inwall and the outer wall of described interior base tube of one end of described outer base tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620193401.8U CN205591905U (en) | 2016-03-14 | 2016-03-14 | A self -adaptation formula stream entry control device for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620193401.8U CN205591905U (en) | 2016-03-14 | 2016-03-14 | A self -adaptation formula stream entry control device for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205591905U true CN205591905U (en) | 2016-09-21 |
Family
ID=56928766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620193401.8U Expired - Fee Related CN205591905U (en) | 2016-03-14 | 2016-03-14 | A self -adaptation formula stream entry control device for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205591905U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649599A (en) * | 2016-03-14 | 2016-06-08 | 中国石油大学(北京) | Self-adaptable inflow control device for oil well |
| CN109779578A (en) * | 2019-03-26 | 2019-05-21 | 西安石油大学 | Adaptive horizontal well control water conservancy project tool based on grease density contrast and eddy flow |
-
2016
- 2016-03-14 CN CN201620193401.8U patent/CN205591905U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649599A (en) * | 2016-03-14 | 2016-06-08 | 中国石油大学(北京) | Self-adaptable inflow control device for oil well |
| CN109779578A (en) * | 2019-03-26 | 2019-05-21 | 西安石油大学 | Adaptive horizontal well control water conservancy project tool based on grease density contrast and eddy flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20180314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |