CN2656634Y - New type hollow water distribution apparatus - Google Patents
New type hollow water distribution apparatus Download PDFInfo
- Publication number
- CN2656634Y CN2656634Y CN 03269335 CN03269335U CN2656634Y CN 2656634 Y CN2656634 Y CN 2656634Y CN 03269335 CN03269335 CN 03269335 CN 03269335 U CN03269335 U CN 03269335U CN 2656634 Y CN2656634 Y CN 2656634Y
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- China
- Prior art keywords
- central tube
- sealing shroud
- water
- spring
- central pipe
- Prior art date
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- Expired - Fee Related
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Abstract
A hollow water regulator is used for petroleum waterflood recovery, which consists of an upper joint (1), a central pipe (2), a seal sleeve (4), a core (6), an outer casing (10), a spring (11), a regulating sleeve (12), a lower joint (13), the central pipe seal assembly (3), (7), (9), and a core seal assembly (15); wherein, a corresponding step is respectively positioned on the outer surface of the central pipe (2) and the inner surface of the seal sleeve (4); a big chamfer is arranged at the step of the seal sleeve (4); the chamfer and the step of the central pipe (2) form a ring hydraulic cavity (8) which is communicated with a radial water pore (16) at the step of the central pipe (2); the seal sleeve (4) can move upwards and downwards under the action of the spring (11) and the ring hydraulic cavity (8); when being opened or closed, the infusion hole (5) can realize the water flooding or prevent the high-pressure water back into water regulator cavity; the regulating sleeve (12) is used for regulating the hold-down force of the spring (11). The utility model has the advantages of reliable operation, long service life and so on.
Description
Technical field: the utility model relates to a kind of novel hollow injection well downhole flow regulator, is applicable to the water injection technology in the oil exploitation process.
Background technology: at present, the oil field is in the seperated layer water injection exploitation, and the injection well downhole flow regulator of application mainly contains hollow distributor, three kinds of movable distributor and eccentric injection mandrels, and it is simple in structure, easy to operate for hollow distributor, be widely used." the 325th～326 page of structure and technical specification of having introduced hollow distributor of petroleum technology handbook, also brought into play its due effect in actual applications, but this injection well downhole flow regulator finds that in long-term use water outlet valve and valve seat are subject to hydraulic blow and sting bad in the injecting process, cause valve and valve seat to lose sealing, when causing stopping water filling, stratum mesohigh aqueous reflux is gone in the inner chamber of injection well downhole flow regulator and its tubing string, thereby reduced the strata pressure energy, flushing fluid causes short circuit not reach the effect of well-flushing from flowing into inner chamber between valve and the valve seat when also causing anti-flushing well simultaneously.
Goal of the invention: the purpose of this utility model is to provide a kind of novel hollow injection well downhole flow regulator, can solve easily bad problem of thorn of injection well downhole flow regulator water filling port effectively, and sealing is reliable, can prevent that stratum mesohigh aqueous reflux from going in the inner chamber of injection well downhole flow regulator and its tubing string.
Summary of the invention: the utility model is achieved in that the novel hollow injection well downhole flow regulator is by top connection, central tube, sealing shroud, fuse, black box, overcoat, spring, regulating sleeve, lower contact, central tube black box and fuse black box are formed, sealing shroud of its central tube overcoat, interior cored, the sealing shroud upper and lower side respectively has one group of black box, central tube and sealing shroud respectively have a step that matches, one group of black box is arranged at central tube step top, there is a big chamfering at the step place of sealing shroud, circularize the hydraulic pressure chamber with the central tube step, the hydraulic pressure chamber communicates with the radially water hole at central tube step place, there is a spring sealing shroud lower end, spring housing is in the lower end of central tube, its sealing shroud can move up and down under spring and the effect of annular hydraulic pressure chamber, regulating sleeve is fixed in the lower contact by screw thread, and regulating sleeve is used for the thrust of regulating spring; When water filling, water under high pressure enters in the cavity of resorption of fuse inner chamber and central tube, radially water hole on central tube enters annular hydraulic pressure chamber, sealing shroud is under the effect of hydraulic pressure cavity pressure, the compression spring promotes sealing shroud and moves down, when water injection hole was exposed in the upper end that moves to sealing shroud, this moment, water under high pressure injected the stratum through fuse water nozzle and water injection hole; When stopping water filling, water pressure in fuse inner chamber and the central tube cavity of resorption reduces, pressure in the annular hydraulic pressure chamber descends thereupon, sealing shroud is up under the effect of spring, water injection hole is sealed by the black box on sealing shroud and the central tube, and the water under high pressure in the stratum can not be turned back in the inner chamber of injection well downhole flow regulator.
It is bad that the utility model can prevent effectively that water injection hole from being stung, and prevents that the water under high pressure in the stratum from turning back in the inner chamber of injection well downhole flow regulator, and have sealing reliably, characteristics such as long service life.
Description of drawings: Fig. 1 is a structure principle chart of the present utility model.
Fig. 2 is a hydraulic pressure cavity configuration partial enlarged drawing.
Specific embodiment: the utility model is described in detail below in conjunction with accompanying drawing:
As shown in Figure 1: the utility model is by top connection (1), central tube (2), sealing shroud (4), fuse (6), overcoat (10), spring (11), regulating sleeve (12), lower contact (13), central tube black box (3), (7), (9) and fuse black box (15) form, the upper and lower side of central tube (2) is threaded with top connection (1) and lower contact (13) respectively, central tube (a 2) cylindrical cover sealing shroud (4), interior cored (6), central tube (2) external surface and sealing shroud (4) inner surface respectively have a step that matches, sealing shroud (4) upper and lower side respectively has one group of black box (3) and (9), one group of black box (7) is arranged at central tube (2) step top, there is a big chamfering at the step place of sealing shroud (4), as shown in Figure 2, circularize hydraulic pressure chamber (8) with central tube (2) step, hydraulic pressure chamber (8) communicates with the radially water hole (16) at central tube (2) step place, sealing shroud (4) lower end is connected with the upper end of overcoat (10) with screw thread, overcoat (10) built-in spring (11), the lower end that spring (11) is enclosed within central tube (2) contacts with sealing shroud (4) bottom, sealing shroud (4) can move up and down with overcoat (10) under spring (11) and annular hydraulic pressure chamber (8) effect, regulating sleeve (12) is fixed in the lower contact (13) by screw thread, and regulating sleeve (12) is used for the thrust of regulating spring (11); When water filling, water under high pressure enters in the cavity of resorption of fuse (6) inner chamber and central tube (2), radially water hole (16) on central tube (2) enters annular hydraulic pressure chamber (8), sealing shroud (4) is under the pressure effect of hydraulic pressure chamber (8), compression spring (11) promotes sealing shroud (4) and overcoat (10) moves down, when water injection hole (5) is exposed in the upper end that moves to sealing shroud (4), water nozzle (14) and the water injection hole (5) of water under high pressure this moment through fuse (6) enters the stratum, when stopping water filling, water pressure in fuse (6) inner chamber and central tube (2) cavity of resorption reduces, pressure in the annular hydraulic pressure chamber (8) descends thereupon, sealing shroud (4) is up under the effect of spring, water injection hole (5) is sealed by the black box (3) (7) on sealing shroud (4) and the central tube (2), and the water under high pressure in the stratum can not be turned back in the inner chamber of injection well downhole flow regulator.
Claims (2)
1, a kind of novel hollow injection well downhole flow regulator, form by central tube (2), sealing shroud (4), fuse (6), spring (11), central tube black box (3), (7), (9) and fuse black box (15), it is characterized in that the outer sealing shroud (4) that is with of central tube (2), sealing shroud (4) upper and lower side respectively has one group of black box (3) and (9), central tube (2) and sealing shroud (4) respectively have a step that matches, and one group of black box (7) is arranged at central tube (2) step top.
2, novel hollow injection well downhole flow regulator according to claim 1, there is a big chamfering at the step place that it is characterized in that sealing shroud (4), circularize hydraulic pressure chamber (8) with the step of central tube (2), hydraulic pressure chamber (8) communicate with the radially water hole (16) at central tube (2) step place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269335 CN2656634Y (en) | 2003-08-04 | 2003-08-04 | New type hollow water distribution apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269335 CN2656634Y (en) | 2003-08-04 | 2003-08-04 | New type hollow water distribution apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2656634Y true CN2656634Y (en) | 2004-11-17 |
Family
ID=34330219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03269335 Expired - Fee Related CN2656634Y (en) | 2003-08-04 | 2003-08-04 | New type hollow water distribution apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2656634Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806883A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Pre-throttling anti-stabbing water distributor |
-
2003
- 2003-08-04 CN CN 03269335 patent/CN2656634Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806883A (en) * | 2012-11-06 | 2014-05-21 | 中国石油化工股份有限公司 | Pre-throttling anti-stabbing water distributor |
| CN103806883B (en) * | 2012-11-06 | 2016-04-27 | 中国石油化工股份有限公司 | The anti-stab injection well downhole flow regulator of pre-throttling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |