CN103470230A - Dead-angle-free production allocation machine - Google Patents
Dead-angle-free production allocation machine Download PDFInfo
- Publication number
- CN103470230A CN103470230A CN201310386731XA CN201310386731A CN103470230A CN 103470230 A CN103470230 A CN 103470230A CN 201310386731X A CN201310386731X A CN 201310386731XA CN 201310386731 A CN201310386731 A CN 201310386731A CN 103470230 A CN103470230 A CN 103470230A
- Authority
- CN
- China
- Prior art keywords
- oil
- blanking plug
- central tube
- dead
- cylindrical shell
- 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.)
- Pending
Links
Images
Abstract
The invention discloses a dead-angle-free production allocation machine which comprises a barrel (2), at least one oil outlet pipe (5), a center pipe (3) and a blanking plug (1). The center pipe (3) is arranged in the barrel (2) and is connected with the inner wall of the barrel (2), the lower end of the blanking plug (1) is arranged in the center pipe (3), at least one oil inlet (6) is formed in the lower portion of the blanking plug (1), a plurality of oil outlets (7) are formed in the upper portion of the blanking plug (1), and an arc surface is arranged on the upper portion of the inner wall of an oil inlet cavity of the blanking plug (1). The dead-angle-free production allocation machine with the structure has the advantages that dead angles of current-layer oil gas on the upper portion of the oil inlet cavity can be eliminated when the current-layer oil gas flows in the blanking plug (1), high-viscosity components in the oil gas can be prevented from being adhered and accumulated in the dead angles, can drop under the vibration effects of production pipes and then are fed into an oil outlet cavity along with the current-layer oil gas, and accordingly the oil outlets (7) can be prevented from being blocked by fluid which turns viscous suddenly.
Description
Technical field
The present invention relates to the down-hole mechanical equipment of the oil well production layer in the oil extraction in oil field field, specifically a kind of without the dead angle 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 the oil production by layer measure, and every layer of oil production of rational allocation, carry out regulating multi-zone production rate.Separate zone oil production process pipe string adopts with one heart, eccentric production mandrel separate zone production technique has realized regulating multi-zone production rate.Production mandrel consists of production mandrel cylindrical shell and blanking plug, and this layer of oil gas enters the blanking plug oil suction chamber through oil inlet pipe, and the oil pocket that goes out through with oil suction chamber UNICOM, enter production mandrel cylindrical shell top and lower floor's air-fuel mixture by oil-out.The existing big up and small down circular cone shape of production mandrel oil suction chamber inwall or cylindric, there is dead angle in the top that this oil gas is flowing in oil suction chamber in blanking plug, this layer of larger component of oil gas medium viscosity can be sticked accumulation in dead angle, after acquiring a certain degree, under the effect of flow string vibrations, come off, and, along with this oil gas enters out oil pocket, there is the risk of stopping up in the thick fluid that becomes sticky suddenly to oil-out.
Summary of the invention
For addressing the above problem, the invention provides a kind ofly without the dead angle production mandrel, improve this layer of oil gas mobile stability in production mandrel, thereby be conducive in oil-gas mining the controlled exploitation to every layer of oil gas.
Provided by the invention a kind of without the dead angle 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, the blanking plug bottom is provided with at least one oil-in, top arranges a plurality of oil-outs, and described blanking plug oil suction chamber upper inside wall is arranged to arc surface.
As preferably, described oil inlet pipe, successively through cylindrical shell and central tube, arranges with oil-in centering, and this structure is conducive to reduce the resistance that this layer of oil gas enters blanking plug.
As preferably, the dead in line of described cylindrical shell, central tube, blanking plug, adopt this frame mode, is conducive to installation, salvaging and the replacing of blanking plug.
As preferably, described oil-out, in the uniform setting that makes progress in week, adopts this arrangement, can make this layer of oil gas circumferentially sneak into evenly in lower floor's oil gas, is conducive to improve the mix uniformly effect of this layer of oil gas and lower floor's oil gas.
O type circle is set between described blanking plug and central tube fit clearance, this structure is set, can intercept in production mandrel the flowing space separately before this layer of oil gas and lower floor's air-fuel mixture, stablize this layer of oil gas and enter the resistance in production mandrel, better realize in separate zone production the selective collection to every layer of oil gas.
Further, the quantity of the O type circle arranged between described blanking plug and central tube fit clearance is four, this set when reaching sealing effectiveness, be O type circle quantity preferably, save O type circle consumption.
The present invention compared with prior art, has following beneficial effect:
Adopt of the present invention a kind of without the dead angle production mandrel, the existing big up and small down circular cone shape of production mandrel oil suction chamber inwall or cylindric, blanking plug oil suction chamber upper inside wall is arranged to arc surface, adopt this structure, can eliminate the dead angle that this layer of oil gas exists on the top of oil suction chamber in blanking plug flows, prevent that the component that the oil gas medium viscosity is larger from sticking accumulation in dead angle, after acquiring a certain degree, under the effect of flow string vibrations, come off, along with this layer of oil gas enters out oil pocket, the thick fluid that becomes sticky suddenly stops up oil-out.
The accompanying drawing explanation
Fig. 1 is that the present invention tells a kind of partial sectional view without blanking plug in a specific embodiment of dead angle production mandrel.
Name corresponding to graphical indicia is called: 1, blanking plug, 2, cylindrical shell, 3, central tube, 4, O type circle, 5, oil inlet pipe, 6, oil-in, 7, oil-out.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1:
As Fig. 1, the present embodiment comprises cylindrical shell 2, at least one oil inlet pipe 5, central tube 3 and blanking plug 1, described central tube 3 is arranged in cylindrical shell 2 and is connected with cylindrical shell 2 inwalls, described blanking plug 1 lower end is arranged in central tube 3, blanking plug 1 bottom is provided with at least one oil-in 6, top arranges a plurality of oil-outs 7, and described blanking plug 1 oil suction chamber upper inside wall is arranged to arc surface.
Described oil inlet pipe 5, successively through cylindrical shell 2 and central tube 3, is arranged with oil-in 6 centerings; The dead in line of described cylindrical shell 2, central tube 3, blanking plug 1; Described oil-out 7 is in the uniform setting that makes progress in week; Between described blanking plug 1 and central tube 3 fit clearances, O type circle 4 is set; The quantity of the O type circle 4 arranged between described blanking plug 1 and central tube 3 fit clearances is four.
This layer of oil gas enters blanking plug 1 bottom oil suction chamber from oil-in 6, oil inlet pipe 7, injects cylindrical shell top and lower floor's air-fuel mixture from going out oil pocket oil-out 7 from bottom to top.Lower floor's oil gas up flows from cylindrical shell 2 bottoms, and the O type circle 4 arranged between blanking plug 1 and central tube 3 fit clearances, play the sealing insulating effect to this layer of oil gas and lower floor's oil gas.
Embodiment 2:
As Fig. 1, the present embodiment is on the basis of embodiment 1, further, of the present invention a kind of without the dead angle production mandrel, comprise setting: oil-in 6, be arranged to a plurality of, oil inlet pipe 5 is circumferentially uniform along cylindrical shell, oil-in 6 is circumferentially uniform along blanking plug 1, described oil inlet pipe 5 and oil-in 6 are centering one by one to be arranged, adopts this structure, and it is little that this layer of oil gas enters blanking plug 1 resistance, and this layer of oil gas that sprays into blanking plug bottom oil suction chamber from surrounding collides mutually, can fully mix and improve the flow effect of this layer of oil gas in blanking plug.
Above content is the further description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that the specific embodiment of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, not breaking away from other embodiments that draw under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (6)
1. one kind without the dead angle production mandrel, comprise cylindrical shell (2), at least one oil inlet pipe (5), central tube (3) and blanking plug (1), described central tube (3) is arranged in cylindrical shell (2) and is connected with cylindrical shell (2) inwall, described blanking plug (1) lower end is arranged in central tube (3), blanking plug (1) bottom is provided with at least one oil-in (6), top arranges a plurality of oil-outs (7), it is characterized in that: described blanking plug (1) oil suction chamber upper inside wall is arranged to arc surface.
2. as claimed in claim 1 a kind of without the dead angle production mandrel, it is characterized in that: described oil inlet pipe (5) through cylindrical shell (2) and central tube (3), is arranged with oil-in (6) centering successively.
3. as claimed in claim 1 a kind of without the dead angle production mandrel, it is characterized in that: the dead in line of described cylindrical shell (2), central tube (3), blanking plug (1).
4. as claimed in claim 1 a kind of without the dead angle production mandrel, it is characterized in that: described oil-out (7) is in the uniform setting that makes progress in week.
5. a kind of without the dead angle production mandrel as described in claim 1, it is characterized in that: between described blanking plug (1) and central tube (3) fit clearance, O type circle (4) is set.
6. a kind of without the dead angle production mandrel as described in claim 5, it is characterized in that: the quantity of the O type circle (4) arranged between described blanking plug (1) and central tube (3) fit clearance is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386731XA CN103470230A (en) | 2013-08-30 | 2013-08-30 | Dead-angle-free production allocation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310386731XA CN103470230A (en) | 2013-08-30 | 2013-08-30 | Dead-angle-free production allocation machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103470230A true CN103470230A (en) | 2013-12-25 |
Family
ID=49795254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310386731XA Pending CN103470230A (en) | 2013-08-30 | 2013-08-30 | Dead-angle-free production allocation machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103470230A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044002U (en) * | 1986-10-08 | 1989-09-06 | 大庆石油管理局油田建设设计研究院 | Gas-liquid mixing flow distributor |
| CN2082758U (en) * | 1991-01-04 | 1991-08-14 | 大庆石油管理局第七采油厂 | Single-flow production sharing device of oil producing pipe column |
| CN201620853U (en) * | 2010-03-19 | 2010-11-03 | 中国石油天然气股份有限公司 | Constant-pressure gasproof pipe column of multilayer mining single pump |
| CN202157792U (en) * | 2011-06-17 | 2012-03-07 | 中国石油天然气股份有限公司 | Underground production allocation device for oil well |
| CN203430491U (en) * | 2013-08-30 | 2014-02-12 | 成都科盛石油科技有限公司 | Bottom-hole regulator with blanking plug oil inlet cavity without dead angles |
-
2013
- 2013-08-30 CN CN201310386731XA patent/CN103470230A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2044002U (en) * | 1986-10-08 | 1989-09-06 | 大庆石油管理局油田建设设计研究院 | Gas-liquid mixing flow distributor |
| CN2082758U (en) * | 1991-01-04 | 1991-08-14 | 大庆石油管理局第七采油厂 | Single-flow production sharing device of oil producing pipe column |
| CN201620853U (en) * | 2010-03-19 | 2010-11-03 | 中国石油天然气股份有限公司 | Constant-pressure gasproof pipe column of multilayer mining single pump |
| CN202157792U (en) * | 2011-06-17 | 2012-03-07 | 中国石油天然气股份有限公司 | Underground production allocation device for oil well |
| CN203430491U (en) * | 2013-08-30 | 2014-02-12 | 成都科盛石油科技有限公司 | Bottom-hole regulator with blanking plug oil inlet cavity without dead angles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105641970B (en) | A kind of extraction kettle | |
| CN206397490U (en) | A kind of Underwell oil-gas separator | |
| CN103089204B (en) | Double-coal-bed layered pressure control device combining coal discharging and coal mining | |
| CN105089543B (en) | A kind of horizontal well pressure water control device | |
| CN102852502A (en) | Intelligent steam distribution process pipe column for horizontal steam injection well | |
| CN202467796U (en) | Sub-divisional water injection ball-launching profile control integrated pipe post for oil field water injection well | |
| CN105156064B (en) | A kind of well-flushable stepwise deblocking packer | |
| CN207728393U (en) | The casing programme of chamber is made for salt hole air reserved storeroom | |
| CN203430491U (en) | Bottom-hole regulator with blanking plug oil inlet cavity without dead angles | |
| CN201090194Y (en) | Adjustable flux water distributor | |
| CN208966249U (en) | A kind of compact coaxial double-pipe injection-production well mouth device | |
| CN103470230A (en) | Dead-angle-free production allocation machine | |
| CN202788787U (en) | Profile control string using nitrogen and foam gel | |
| CN205330637U (en) | Sand control pipe for oil development | |
| CN205805523U (en) | A kind of blanking plug and net-filter assembly thereof | |
| CN200975246Y (en) | Integrating layered water distributor | |
| CN108505985A (en) | A kind of gas anchor of exploiting coal bed methane | |
| CN104047574B (en) | A kind of oil gas field down-hole liquid discharges device and method | |
| CN203640704U (en) | Production allocation machine | |
| CN203452753U (en) | Baffling type bottom-hole regulator | |
| CN201843560U (en) | Cone-shaped spiral rubber packing | |
| CN202467795U (en) | Water distributor special for separated injection, ball injection and profile control of water injection well | |
| CN207538815U (en) | A kind of flow seal device | |
| CN205172538U (en) | Water injection well is water injection mandrel in pit | |
| CN204851177U (en) | Extrusion through type ball seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131225 |