CN2849159Y - Constant flow downhole production allocator - Google Patents
Constant flow downhole production allocator Download PDFInfo
- Publication number
- CN2849159Y CN2849159Y CN 200520146607 CN200520146607U CN2849159Y CN 2849159 Y CN2849159 Y CN 2849159Y CN 200520146607 CN200520146607 CN 200520146607 CN 200520146607 U CN200520146607 U CN 200520146607U CN 2849159 Y CN2849159 Y CN 2849159Y
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- central tube
- throttling sliding
- overcoat
- throttling
- 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
Links
Images
Landscapes
- Sliding Valves (AREA)
Abstract
The utility model relates to a constant-current production mandrel, which mainly solves the problem that the existing production mandrel can not guarantee layered control. The utility model is characterized in that a central pipe (3) is provided with a liquid outlet hole (8); a throttling sliding sleeve (5) is arranged between the central pipe (3) and an outer sheath (4); a piston (6) is arranged in an upper end head of the throttling sliding sleeve (5); the lower end of the throttling sliding sleeve (5) is connected with a slip ring (12); a spring (15) and a sleeve pipe (7) are arranged between the throttling sliding sleeve (5) and the central pipe (3); the sleeve pipe (7) is in contact with the piston (6); a one-way valve (9) is arranged between the outer sheath (4) on the lower end of the throttling sliding sleeve (5) and the central pipe (3); the upper end of the outer sheath (4) is provided with a small hole (10), and the inner wall is provided with a stair; a lower joint (2) is provided with a liquid entry hole (11) which is communicated with the one-way valve (9). The constant-current production mandrel can automatically regulate the size of the liquid outlet hole and guarantee layered control so that the flow quantity of discharged liquid is not greatly changed. The utility model has the characteristics of convenient use and constant flow quantity of discharged liquid.
Description
Technical field:
The utility model relates to the downhole tool of the oil well production layer in the oil recovery field, oil field, especially constant current production mandrel.
Background technology:
In oil recovery field, oil field, in the blowing production phase, the oil production by layer process pipe string adopts concentric production mandrel separate zone production technology, eccentric production mandrel to divide excavating technology to realize regulating multi-zone production rate, has obtained good effect.Blowing change take out after, in oil production by layer, only used the water blockoff measure of high permeability zone, the shutoff of high aquifer, its effect is variation year by year, the oil production by layer arts demand continues tackling key problem.Existing instrument can't guarantee hierarchical control, can not satisfy the needs of oil well rational exploitation.
The utility model content:
In order to solve the problem that existing production mandrel can't guarantee hierarchical control, the utility model provides a kind of constant current production mandrel, and this constant current production mandrel can be regulated the size of fluid hole automatically, guarantees hierarchical control, using flow quantity does not have big variation, has characteristics easy to use, the fluid constant flow.
The technical solution of the utility model is: this constant current production mandrel comprises top connection, lower contact, central tube and overcoat, central tube and overcoat are connected between the lower contact, have fluid hole on the central tube, the throttling sliding sleeve is arranged between central tube and the overcoat, throttling sliding sleeve upper end outer wall has jump ring, the upper end of throttling sliding sleeve is built-in with piston, throttling sliding sleeve lower end is connected with slip ring, spring and sleeve pipe are arranged between throttling sliding sleeve and the central tube, sleeve pipe touches mutually with piston, between the overcoat of throttling sliding sleeve lower end and the central tube one way valve is arranged, outer set upper side has aperture, has the inlet opening that communicates with one way valve in the lower contact.
Above-mentioned one way valve lower end has water nozzle; Slip ring is connected with central tube by pin.
The utlity model has following beneficial effect: owing to take such scheme, pit shaft liquid enters the inlet opening in the lower contact, enter between central tube and the overcoat through one way valve, wellbore pressure acts on the piston by the aperture that puts outward, this moment, sleeve pipe moved up and down under the effect of spring and wellbore pressure, fluid hole is amplified or dwindle, the area of passage size of fluid hole changes with the variation of formation pressure, guarantee that fluid flow is constant in certain limit, can regulate fluid flow automatically, guarantee hierarchical control, using flow quantity does not have big variation, easy to use, the fluid constant flow.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model.
1-top connection among the figure, 2-lower contact, 3-central tube, 4-overcoat, 5-throttling sliding sleeve, 6-piston, 7-sleeve pipe, 8-fluid hole, 9-one way valve, 10-aperture, 11-inlet opening, 12-slip ring, 13-water nozzle, 14-pin, 15-spring, 16-jump ring.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this constant current production mandrel comprises top connection 1, lower contact 2, central tube 3 and overcoat 4, central tube 3 and overcoat 4 are connected lower contact (1,2) between, have fluid hole 8 on the central tube 3, between central tube 3 and the overcoat 4 throttling sliding sleeve 5 is arranged, throttling sliding sleeve 5 upper end outer walls have jump ring 16, the upper end of throttling sliding sleeve 5 is built-in with piston 6, throttling sliding sleeve 5 lower ends are connected with slip ring 12, spring 15 and sleeve pipe 7 are arranged between throttling sliding sleeve 5 and the central tube 3, sleeve pipe 7 touches mutually with piston 6, between the overcoat 4 of throttling sliding sleeve 5 lower ends and the central tube 3 one way valve 9 is arranged, overcoat 4 upper ends have aperture 10 and inwall has stage, have the inlet opening 11 that communicates with one way valve 9 in the lower contact 2.One way valve 9 lower ends have water nozzle 13, can adopt the water nozzle 13 of different size according to fluid producing layer fluid situation, and slip ring 12 is connected with central tube 3 by pin 14, and pin 14 is cut off during release.
When discharging when going into the well, in central tube 3, suppress 5-7MPa, pressure acts on the throttling sliding sleeve 5 by fluid hole 8, throttling sliding sleeve 5 is up under pressure, be stuck in by jump ring 16 on the inner step of overcoat 4, the instrument of finishing discharges, and the integrated artistic tubing string disconnects at the instrument place with the effect of giving up, and this instrument is stayed underground work.
During real work, pit shaft liquid enters the inlet opening 11 in the lower contact 2, enter between central tube 3 and the overcoat 4 through one way valve 9, wellbore pressure acts on the piston 6 by the aperture on the overcoat 4 10, this moment, sleeve pipe 7 moved up and down under the effect of spring 15 and wellbore pressure, fluid hole 8 is amplified or dwindles, and the area of passage size of fluid hole 8 changes with the variation of formation pressure, guarantee that fluid flow is constant in certain limit, can regulate fluid flow automatically.
Claims (3)
1, a kind of constant current production mandrel, comprise top connection (1), lower contact (2), central tube (3) and overcoat (4), central tube (3) and overcoat (4) are connected lower contact (1,2) between, it is characterized in that: have fluid hole (8) on the central tube (3), between central tube (3) and the overcoat (4) throttling sliding sleeve (5) is arranged, throttling sliding sleeve (5) upper end outer wall has jump ring (16), the upper end of throttling sliding sleeve (5) is built-in with piston (6), throttling sliding sleeve (5) lower end is connected with slip ring (12), spring (15) and sleeve pipe (7) are arranged between throttling sliding sleeve (5) and the central tube (3), sleeve pipe (7) touches mutually with piston (6), between the overcoat (4) of throttling sliding sleeve (5) lower end and the central tube (3) one way valve (9) is arranged, overcoat (4) upper end has aperture (10) and inwall has stage, has the inlet opening (11) that communicates with one way valve (9) in the lower contact (2).
2, constant current production mandrel according to claim 1 is characterized in that: one way valve (9) lower end has water nozzle (13).
3, constant current production mandrel according to claim 1 is characterized in that: slip ring (12) is connected with central tube (3) by pin (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520146607 CN2849159Y (en) | 2005-12-27 | 2005-12-27 | Constant flow downhole production allocator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520146607 CN2849159Y (en) | 2005-12-27 | 2005-12-27 | Constant flow downhole production allocator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849159Y true CN2849159Y (en) | 2006-12-20 |
Family
ID=37521643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520146607 Expired - Fee Related CN2849159Y (en) | 2005-12-27 | 2005-12-27 | Constant flow downhole production allocator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849159Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840153A (en) * | 2016-03-24 | 2016-08-10 | 哈尔滨工业大学 | Oil well underground layered bottom-hole regulator |
| CN112228017A (en) * | 2020-11-24 | 2021-01-15 | 辽宁新华仪器有限公司 | External debugging constant pressure matching production kit |
-
2005
- 2005-12-27 CN CN 200520146607 patent/CN2849159Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840153A (en) * | 2016-03-24 | 2016-08-10 | 哈尔滨工业大学 | Oil well underground layered bottom-hole regulator |
| CN105840153B (en) * | 2016-03-24 | 2018-07-24 | 哈尔滨工业大学 | A kind of production mandrel of oil well layering |
| CN112228017A (en) * | 2020-11-24 | 2021-01-15 | 辽宁新华仪器有限公司 | External debugging constant pressure matching production kit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102953711B (en) | Device and method for horizontal gas well to drain liquid and produce gas | |
| CN105257256B (en) | Underground gas production tubing string and gas production method | |
| CN205036295U (en) | Full well section self-suction type reverse circulation gas drilling system | |
| CN201705276U (en) | Well completion and flow string of horizontal well | |
| CN205036331U (en) | Reverse circulation gas drilling tool combined structure | |
| CN115879644A (en) | Shale gas well production mode optimization method based on optimized tubular column | |
| CN2849159Y (en) | Constant flow downhole production allocator | |
| CN108894760A (en) | Valve pipe combined type underground throttle for gas well production and use method thereof | |
| CN2929158Y (en) | Wellhead device of concentric double tube injection water | |
| CN110952949A (en) | Soluble plugging tool for tail end of velocity string and using method thereof | |
| CN103362488A (en) | Sand blasting device allowing fracturing sliding sleeve to be fished | |
| CN105201817A (en) | Split type plunger without base and liquid drainage gas recovery process | |
| CN2849158Y (en) | Water blocking downhole production allocator | |
| CN2846741Y (en) | Sand proof tubular pole for water injection well | |
| CN2489114Y (en) | Oil pipe pumping type well pump | |
| CN2758474Y (en) | Under well gas liquid separating and back filling sand proof gas recovering device | |
| CN2585975Y (en) | Oil well layered stable and constant steam injection device | |
| CN2734995Y (en) | Production assembly capable of recognizing oil layer hierarchically | |
| CN201581878U (en) | Cast-free dead-opening eccentric water distributor | |
| CN206053924U (en) | A kind of successively sand washing sand blower of sliding sleeve | |
| CN2718257Y (en) | Inforced double-runner oil producing device by layer | |
| CN202000981U (en) | Eccentric water injection tool for highly deviated well | |
| CN2622426Y (en) | Multi-function bottom valve for oil pump | |
| CN2616682Y (en) | Eccentric injection well down-hole flow | |
| CN206737894U (en) | A kind of oil pocket pressure-equalizing pipe string devices for being used to recover the oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20101227 |