CN203515525U - Bottom-hole regulator - Google Patents
Bottom-hole regulator Download PDFInfo
- Publication number
- CN203515525U CN203515525U CN201320536197.1U CN201320536197U CN203515525U CN 203515525 U CN203515525 U CN 203515525U CN 201320536197 U CN201320536197 U CN 201320536197U CN 203515525 U CN203515525 U CN 203515525U
- Authority
- CN
- China
- Prior art keywords
- blanking plug
- central tube
- stopper
- oil
- oil gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a bottom-hole regulator with a high mixing ratio. The bottom-hole regulator comprises a cylinder (1), at least one oil inlet pipe (2), a central pipe (3) and a hollow stopper (4). The central pipe (3) is arranged in the cylinder (1) and connected with the inner wall of the cylinder (1), the lower end of the stopper (4) is arranged in the central pipe (3), the middle of the stopper (4) is of a ball structure and provided with a plurality of oil outlet holes enabling the internal of the stopper (4) to be communicated with the external of the stopper (4), the oil inlet pipe (2) sequentially penetrates through the cylinder (1) and the central pipe (3) and is communicated with the stopper (4), the diameter of the central pipe (3) decreases linearly from top to bottom, and the diameter of the lower portion of the stopper (4) connected with the central pipe (3) in a bearing and inserting mode decreases linearly from top to bottom. By the adoption of the structure, the mixing effect of current-layer oil gas and lower-layer oil gas on the upper portion of the cylinder can be effectively improved, fluid density is uniformed, flow resistance of the lower-layer oil gas between the central pipe and the cylinder is reduced, and the purpose of improving oil gas collection efficiency is achieved.
Description
Technical field
The utility model relates in field of petroleum exploitation the plant equipment for oil exploitation, specifically a kind of production mandrel.
Background technology
The Basic Geological Characteristics of sandstone oil field is heterogeneous body, multiple zone.For avoiding interlayer interference, in giving full play to, the ability of the produce oil gas of less permeable layer, horizontal contradiction and the interlayer contradiction of further adjusting oil reservoir are outstanding, must take oil production by layer measure, carry out regulating multi-zone production rate, every layer of oil production of rational allocation.Production mandrel is the assurance that realizes " steady oil control water " policy and improve oil recovery rate.Existing production mandrel center pipeline section is straight length, lower floor oil gas through between central tube and cylindrical shell during gap resistance large, and this section of flowing space evenly mixed to no effect lower floor's oil gas, the mobile spatial form of Mixed Zone oil gas that is positioned at cylindrical shell top is even, lower floor's oil flow is steady, is unfavorable for the mixed effect of Ben Cengyouyu lower floor oil.
Utility model content
For addressing the above problem, the utility model provides a kind of production mandrel, and this production mandrel has improved in cylindrical shell the effect of this layer of oil gas and lower floor's air-fuel mixture, has reduced the flow resistance of oil gas in oil pipe, improve the mobility of oil gas in oil pipe, thereby reach the effect of the collecting efficiency that improves oil gas.
The utility model provides a kind of production mandrel: comprise cylindrical shell, at least one oil inlet pipe, central tube and blanking plug, described central tube is arranged in cylindrical shell and is connected with cylinder inboard wall, described blanking plug lower end is arranged in central tube, described oil inlet pipe successively through cylindrical shell, central tube and with blanking plug internal switching, described blanking plug middle part is arranged to hemispherical, and in this hemispherical structure, is provided with the inside and outside portion of a plurality of connection blanking plugs oil outlet.
Further technical scheme is:
Described central tube diameter from top to bottom linearity reduces.
Described blanking plug lower diameter from top to bottom linearity reduces, and its wall is provided with at least one side opening, and described side opening and oil inlet pipe centering are arranged.
Hemispherical structure upper end, described blanking plug middle part is fishing head.
O type circle is set between described blanking plug bottom and central tube.
The dead in line of described cylindrical shell, central tube, blanking plug.
Be arranged on a plurality of side openings of blanking plug bottom, this layer of oil gas is sucked in many ways from the surrounding of oil pipe, improve to suck effect, as preferably, side opening is uniform distribution on same circumference.Side opening and oil inlet pipe centering are arranged, can reduce this layer of oil gas and from oil inlet pipe, flow into the resistance of blanking plug inside.Cylindrical shell, central tube, blanking plug dead in line, can be so that blanking plug oil-feed surrounding be even, and blanking plug fuel-displaced each in even Pen Ren lower floor gas stream.
The utility model compared with prior art, there is following beneficial effect: up big and down small central tube and central tube upper and lower part end, the space sudden change of the mobile lacuna of lower floor's oil gas, in the time of can making lower floor's oil gas flow to cylindrical shell central tube position and central tube upper and lower part end, liquid form changes, the Reynolds number that flows increases, and produces transition flow or turbulent flow; Cylindrical shell inner central tube is lower large little lower floor's oil gas flowing space around, and the lower floor's oil gas flow clearance in central tube outside that is straight length compared with existing production mandrel is large, and fluid flow resistance diminishes; This layer of oil gas, is conducive to this layer of oil gas and mixes with the equal proportion of lower floor oil gas to the ejection of inner barrel surrounding at blanking plug structure spherical in shape place.This kind of structure is conducive to strengthen mixed effect, reduces gas stream dynamic resistance, and the mobile performance of oil gas in oil pipe improves.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of a specific embodiment of production mandrel that the utility model is told;
Fig. 2 is the partial enlarged drawing of blanking plug top sectional view in the specific embodiment of production mandrel described in the utility model.
Name corresponding to graphical indicia is called: 1, urceolus, 2, oil inlet pipe, 3, central tube, 4, blanking plug, 5, O type circle.
The specific embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment 1:
As shown in Figure 1, the present embodiment comprises cylindrical shell 1 and its inner blanking plug 4, and cylindrical shell 1 comprises up big and down small central tube 3; Blanking plug 4 middle parts are hemispherical structure, and the uniform a plurality of circular oil outlets of hemispherical structure surrounding; Cylindrical shell 1 left side has a circular hole and is connected with oil inlet pipe 2 left ends; Oil inlet pipe 2 right-hand members, through central tube, are arranged with blanking plug 4 centerings; Many groups 0 type circle 5 is set between central tube 3 blanking plug 4 fit clearances.
Lower floor's gas mixture up flows from cylindrical shell 1 bottom, sudden change at central tube 3 At The Heights due to the lacuna size that flows, steady flow condition changes, be conducive to the mixing of nonhomogeneous density oil gas, particularly at central tube upper port place, it is maximum that rate of flow of fluid reaches, and the unexpected increase of mobile lacuna, flowing, stationarity is not maximum, and lower floor's oil gas herein disturbance is violent, and fluid can fully be mixed.
This layer of oil gas flows into blanking plugs by oil inlet pipe 2, the aperture of offering from blanking plug 4 chondritics from bottom to top ejection, to surrounding Pen Ru lower floor gas stream, make this layer of oil gas sneak into lower floor's gas stream each to evenly.O type circle 5 plays the effect to this layer of oil gas and lower floor's oil gas seal isolation, guarantees the negative regulation in this layer of oil gas oil inlet pipe 2, blanking plug 4 and cylindrical shell 1, to the selective collection of each layer of oil gas, provides assurance.
Embodiment 2:
As shown in Figure 1, the present embodiment comprises cylindrical shell 1 and its inner blanking plug 4, and cylindrical shell 1 comprises up big and down small central tube 3; The uniform a plurality of circular oil outlets of the blanking plug 4 hemispherical structure surrounding in middle part, and the circular hole of bottom is little compared with the diameter on top; Cylindrical shell 1 left side has a circular hole and is connected with oil inlet pipe 2 left ends; Oil inlet pipe 2 right-hand members, through central tube 3, are arranged with blanking plug 4 bottom side opening centerings; Many groups 0 type circle 5 is set between central tube 3 and blanking plug 4 fit clearances.
Lower floor's gas mixture up flows from cylindrical shell 1 bottom, and this layer of oil gas flows into blanking plug 4 by oil inlet pipe 2, the aperture of offering from blanking plug 4 chondritics from bottom to top ejection.As preferably, the aperture, aperture top that in the present embodiment, chondritic place offers is little compared with bottom, and small-bore size becomes gradual change numerical value from top to down.Upwards flow velocity is maximum in chondritic for this layer of gas stream, and the medium distributing in chondritic is increase in density from top to down, by this aperture structure, the gas stream output of chondritic upper end can be limited in the hole of chondritic upper end minimum, and maximum hole bottom can increase the gas stream output of lower end, between them, density and speed also present gradual change feature.The effect of this feature is to improve the patency of blanking plug, and simultaneously this layer of oil gas sprays into lower floor's gas stream to surrounding uniformly in same plane, make this layer of oil gas sneak into lower floor's gas stream each to evenly.
Claims (6)
1. production mandrel, comprise cylindrical shell (1), at least one oil inlet pipe (2), central tube (3) and blanking plug (4), described central tube (3) is arranged in cylindrical shell (1) and is connected with cylindrical shell (1) inwall, described blanking plug (4) lower end is arranged in central tube (3), described oil inlet pipe (2) successively through cylindrical shell (1), central tube (3) and with blanking plug (4) internal switching, it is characterized in that: described blanking plug (4) middle part is arranged to hemispherical, and in this hemispherical structure, is provided with the inside and outside portion of a plurality of connection blanking plugs (4) oil outlet.
2. production mandrel as claimed in claim 1, is characterized in that: described central tube (3) diameter from top to bottom linearity reduces.
3. production mandrel as claimed in claim 1, is characterized in that: described blanking plug (4) lower diameter from top to bottom linearity reduces, and its wall is provided with at least one side opening, and described side opening and oil inlet pipe (2) centering is arranged.
4. production mandrel as claimed in claim 1, is characterized in that: hemispherical structure upper end, described blanking plug (4) middle part is fishing head.
5. production mandrel as described in claim 1, is characterized in that: between described blanking plug (4) bottom and central tube (2), O type circle (5) is set.
6. as the production mandrel as described in any one in claim 1 to 5, it is characterized in that: the dead in line of described cylindrical shell (1), central tube (3), blanking plug (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536197.1U CN203515525U (en) | 2013-08-30 | 2013-08-30 | Bottom-hole regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320536197.1U CN203515525U (en) | 2013-08-30 | 2013-08-30 | Bottom-hole regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515525U true CN203515525U (en) | 2014-04-02 |
Family
ID=50374472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320536197.1U Expired - Fee Related CN203515525U (en) | 2013-08-30 | 2013-08-30 | Bottom-hole regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470231A (en) * | 2013-08-30 | 2013-12-25 | 成都科盛石油科技有限公司 | Bottom-hole regulator with hemispherical structure on plug |
-
2013
- 2013-08-30 CN CN201320536197.1U patent/CN203515525U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470231A (en) * | 2013-08-30 | 2013-12-25 | 成都科盛石油科技有限公司 | Bottom-hole regulator with hemispherical structure on plug |
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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: 20140402 Termination date: 20140830 |
|
| EXPY | Termination of patent right or utility model |