CN2906056Y - Offset water distributor - Google Patents
Offset water distributor Download PDFInfo
- Publication number
- CN2906056Y CN2906056Y CN 200620030470 CN200620030470U CN2906056Y CN 2906056 Y CN2906056 Y CN 2906056Y CN 200620030470 CN200620030470 CN 200620030470 CN 200620030470 U CN200620030470 U CN 200620030470U CN 2906056 Y CN2906056 Y CN 2906056Y
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- CN
- China
- Prior art keywords
- main body
- ball
- single current
- hole
- plug
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- Expired - Fee Related
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Abstract
The utility model discloses an offset water distributor which comprises a main body of the distributor; wherein a liquid discharge hole is provided on the main body of the water distributor to place a blanking plug, a blind hole is respectively provided at the axial direction of the main body of the water distributor at both sides of the liquid discharge hole, the two blind holes are respectively communicated with the bottom of the liquid discharge hole through a horizontal connecting channel, a single-flow return ball is arranged in each blind hole, a choke plug is provided on each single-flow return ball, and the blind holes, the single-flow return balls, a constant pressure spring and a guide groove constructs a single-flow valve. Because of the adoption of the structure in the utility model, the injected water passes the filter screen of the eccentric blanking plug, the water nozzle and the liquid discharge hole of the blanking plug, then was compressed and single-flow returned before entering the annular space in the oil sleeve to be injected into the formation. If the pressure in the water injection system changes, the single-flow return is stopped by the spring. Thereby, the formation return can not enter the main body of the tool and the space in the oil pipe in the well is ensured to be clear.
Description
Technical field
The utility model relates to a kind of injection well downhole flow regulator, especially relates to a kind of eccentric injection mandrel.
Background technology
At present, eccentric injection mandrel commonly used both at home and abroad is to carry out one of downhole tool of layered quantitative water filling according to the different water absorbing capacities of oil reservoir.During normal water filling, the rubber tube of packer is in open configuration, and oil reservoir is divided into some water filling intervals.Blanking plug in each water filling interval leans on the step (diameter is 22mm) of supporter to be seated in the inclined to one side hole of seating nipple main body, and cam is stuck in expansion position, top, inclined to one side hole, and blanking plug two group of four road packing is up and down sealed inclined to one side hole fluid hole.Inject water through filter screen,, inject target zone by water nozzle, seal section liquid outlet groove, after the hole fluid hole enters the oil pipe annular space partially.The seperated layer water injection amount is controlled by the water nozzle diameter.As find that the water nozzle diameter is improper, can change at any time.But in the injecting process, because of pressure reduction in the well too big, eccentric injection mandrel exists uncontrollable reservoir sand at present, polymer returns to tell and enters oil pipe, if instrument fall card, test salvage or stop the well servicing water injecting pump, well head flow process accessory is changed to stop and is rushed down when pressing, formation sand production will appear, the polymer reverse flow stuff enters oil pipe from the main body fluid hole, cause test to be hampered, bring difficulty for the pulling operation, influence the normal water filling of interval and have only operation cleaning tubing string on the enormous expenditure of input, increased the expenditure of water filling cost.
Summary of the invention
The purpose of this utility model just is to solve in the separated-zone water infection oil field tubing string technology, and the uncontrollable formation sand production of eccentric injection mandrel, polymer return the defective of telling existence, the problem that very easily causes the test pulling to be hampered.Utilize anti-returning to tell the purpose that the interior cleaning of device maintenance well reaches smooth pulling.Thereby provide a kind of eccentric injection mandrel.
The purpose of this utility model can realize by following measure:
The utility model comprises the injection well downhole flow regulator main body, on the injection well downhole flow regulator main body, offer the fluid hole of placing blanking plug, in the both sides of fluid hole respectively along the injection well downhole flow regulator body shaft to offering a blind hole, two blind holes are connected by horizontal interface channel with the bottom of fluid hole respectively, in each blind hole, be mounted with the anti-that of single current ball, anti-your ball of single current is provided with the level pressure spring, on anti-your ball of single current, be mounted with plug, being positioned at anti-your the ball place of single current in each blind hole offers and the extraneous guiding gutter that communicates, above-mentioned each blind hole, single current anti-that ball and level pressure spring and guiding gutter constitute ball-and-seat.
Plug is a sunk screw in the utility model, certainly, also can adopt other suitable plugs.
The utility model is owing to adopt said structure, and injection water can instead enter oil sets annular space thereafter through inclined to one side hole plug device filter screen, water nozzle, blanking plug fluid hole, compression single current from the eccentric injection mandrel body passageways and inject the stratum.If flood pattern pressure changes, the anti-that of single current is closed under the effect of spring, and the stratum reverse flow stuff does not enter in the tool body, has guaranteed that the OIH tube space is unimpeded.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is an A-A sectional view of the present utility model;
Fig. 3 is user mode figure of the present utility model.
The specific embodiment
The utility model is done with detailed description below in conjunction with drawings and Examples:
As shown in the figure, the utility model comprises injection well downhole flow regulator main body 4, on injection well downhole flow regulator main body 4, offer the fluid hole 13 of placing blanking plug, both sides at fluid hole 13 axially offer a blind hole 14 along injection well downhole flow regulator main body 4 respectively, two blind holes are connected 16 with the bottom of fluid hole 13 by horizontal interface channel respectively, in each blind hole 14, be mounted with the anti-that of single current ball 12, anti-your ball 12 of single current is provided with level pressure spring 11, on anti-your ball 12 of single current, be mounted with plug 10, being positioned at anti-your ball 12 places of single current in each blind hole offers and the extraneous guiding gutter 15 that communicates, above-mentioned each blind hole, single current anti-that ball 12 and level pressure spring 11 and guiding gutter 15 constitute ball-and-seats.Plug 10 is a sunk screw.In addition, as shown in Figure 2: top connection is connected with connecting cylinder 21 time, and connecting cylinder 2 is arranged with injection well downhole flow regulator main body 4, is positioned at injection well downhole flow regulator main body 4 in connecting cylinder 2 inner chambers and is provided with guide way 3.Be provided with filter bowl 5 (claiming bar seam filter bowl again, as follows) in injection well downhole flow regulator main body 4 bottoms.Injection well downhole flow regulator main body 4 is arranged with support 7, and support 7 is arranged with lower contact 8, also is provided with guide way 6 down on support 7, and support 7 is outside equipped with down connecting cylinder 9.
Operating principle of the present utility model is as follows: the technical scheme that the utility model is taked is: change former eccentric injection mandrel main body fluid hole structure, fluid hole is processed in lower body part makes a call to two straight holes near place, hole partially, be communicated with the fluid hole inner chamber, set and press the anti-that of single current ball seat, the single current of packing into is that ball instead, by the unlatching of anti-your ball of level pressure spring control, the other end of level pressure spring links to each other with the plug that is provided with sealing ring.Make a call to two fluid holes in anti-your the ball lower left quarter position of single current, fluid hole has the anti-that control of level pressure single current, only export but no import.
Claims (2)
1, a kind of eccentric injection mandrel, it comprises injection well downhole flow regulator main body (4), on injection well downhole flow regulator main body (4), offer the fluid hole (13) of placing blanking plug, it is characterized in that: the both sides at described fluid hole (13) axially offer a blind hole (14) along injection well downhole flow regulator main body (4) respectively, two blind holes respectively with the bottom of fluid hole (13) by horizontal interface channel be connected (16), in each blind hole (14), be mounted with the anti-that of single current ball (12), anti-your ball (12) of single current is provided with level pressure spring (11), on anti-your ball (12) of single current, be mounted with plug (10), being positioned at anti-your ball (12) of single current in each blind hole locates to offer and the extraneous guiding gutter (15) that communicates, above-mentioned each blind hole, single current anti-that ball (12) and level pressure spring (11) and guiding gutter (15) constitute ball-and-seat.
2, eccentric injection mandrel according to claim 1 is characterized in that: described plug (10) is a sunk screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620030470 CN2906056Y (en) | 2006-06-23 | 2006-06-23 | Offset water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620030470 CN2906056Y (en) | 2006-06-23 | 2006-06-23 | Offset water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2906056Y true CN2906056Y (en) | 2007-05-30 |
Family
ID=38114690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620030470 Expired - Fee Related CN2906056Y (en) | 2006-06-23 | 2006-06-23 | Offset water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2906056Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
| CN104806200A (en) * | 2015-04-24 | 2015-07-29 | 中国石油集团渤海钻探工程有限公司 | Plunger-type double-passage different-direction synchronous joint control check valve for double-layer continuous oil pipe |
-
2006
- 2006-06-23 CN CN 200620030470 patent/CN2906056Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988379A (en) * | 2010-11-04 | 2011-03-23 | 李永祥 | Backflow-resistant device of eccentric water distributor |
| CN104806200A (en) * | 2015-04-24 | 2015-07-29 | 中国石油集团渤海钻探工程有限公司 | Plunger-type double-passage different-direction synchronous joint control check valve for double-layer continuous oil pipe |
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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: 20070530 Termination date: 20110623 |