CN201321840Y - Constant pressure valve used for oil field well completion - Google Patents
Constant pressure valve used for oil field well completion Download PDFInfo
- Publication number
- CN201321840Y CN201321840Y CNU2008202282375U CN200820228237U CN201321840Y CN 201321840 Y CN201321840 Y CN 201321840Y CN U2008202282375 U CNU2008202282375 U CN U2008202282375U CN 200820228237 U CN200820228237 U CN 200820228237U CN 201321840 Y CN201321840 Y CN 201321840Y
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- CN
- China
- Prior art keywords
- sliding sleeve
- central tube
- spring
- well completion
- constant pressure
- 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 relates to a constant pressure valve used for well completion in the oil production industrial oil and gas well completion operation field, which is characterized in that a sliding sleeve (6) is arranged between a central tube (8) and an outer cover (2); the central tube (8) is provided with two deflector holes at the sliding position of the sliding sleeve (6); the central tube (8) is sequentially sleeved with an adjusting cap (10) and a spring (9); the adjusting cap (10) and the spring (9) are limited between a convex plate at the bottom of the sliding sleeve (6) and a protruding ring at the bottom of the central tube (8); inner screw thread of a protruding ring at the tail of the central tube (8) is connected with a pipe nipple (11) by screw thread; one end of the sliding sleeve (6) is provided with a liquid inlet tank; the middle of the sliding sleeve (6) is provided with the deflector holes which are communicated with the liquid inlet tank; and the length of the sliding sleeve (6) is larger than the compression length of the spring (9). The utility model can complete opening action effectively and accurately in the section operation of the horizontal well, and realize pressure adjustment by resetting after pressure relief.
Description
Technical field
The utility model relates to oil exploitation industry oil gas well completion operation field, particularly a kind of oilfield well completion constant pressure valve.
Background technology
In the completion practice of oil gas well, because the payzone oil is inhomogeneous, moisture or the layer position pressure difference of payzone, long-term production for the oil gas well, perhaps the later stage in order to increase production transformation, all exist the problem of a later stage segmentation operation, a certain well is carried out 1～2 section or 2～3 sections effective packings, transform operation then piecemeal, in order to realize payzone segmentation packing, guarantee that external packer of pipe sets fully, need a kind of constant pressure arrangement that can under the certain pressure value, just can open, guarantee stratum realization packing, after operation is finished, release, instrument trips out pit shaft.Present existing constant pressure valve exists reset issues, controlled pressure effectively fully sometimes in operation.
Summary of the invention
The purpose of this utility model provides a kind of oilfield well completion constant pressure valve, and it can effectively, accurately finish opening action in the segmentation operation of horizontal well, reliable reset and realize adjustable in pressure after the release.
The purpose of this utility model is achieved in that a kind of oilfield well completion constant pressure valve of design, and it comprises joint, overcoat, sliding sleeve, central tube, spring, it is characterized in that: between central tube and the overcoat sliding sleeve is arranged; Central tube has two pod apertures at sliding sleeve sliding position place, is socketed with in turn on the central tube to regulate cap and spring; Adjusting cap and spring are limited between the boss and central tube bottom protrusion annulus of sliding sleeve bottom, and the internal thread of central tube tail protrusion annulus is threaded with pipe nipple, so that regulate the external screw thread regulating spring compression distance of cap by the central tube afterbody; Sliding sleeve one end has lead channel, and there is pod apertures at the sliding sleeve middle part, and pod apertures is communicated with lead channel, and the length of sliding sleeve is greater than the reduction length of spring.
Inside and outside described joint one end screw thread is arranged respectively, wherein external screw thread is connected with the overcoat threaded one end, and internal thread is threaded with central tube.
Be socketed with seal, sealing ring, sealing ring and sealing ring on described joint, overcoat and the sliding sleeve.
Characteristics of the present utility model are: this oilfield well completion constant pressure valve, and adopt spring reset and regulate cap and regulate pressure, make this oilfield well completion reset effectively, reliably with constant pressure valve; Switch is flexible, move safe and reliable, can be effectively, accurately pressure is opened in control, realizes the purpose of segmentation operation.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is the example structure schematic diagram.
Among the figure: 1, joint; 2, overcoat; 3, sealing ring; 4, sealing ring; 5, sealing ring; 6, sliding sleeve; 7, sealing ring; 8, central tube; 9, spring; 10, regulate cap; 11, pipe nipple.
The specific embodiment
Embodiment 1 as shown in Figure 1, this oilfield well completion constant pressure valve has screw thread respectively inside and outside its joint 1 one ends, wherein external screw thread is connected with overcoat 2 threaded one ends, internal thread is threaded with central tube 8; Between central tube 8 and the overcoat 2 sliding sleeve 6 is arranged; Be socketed with in turn on the central tube 8 and regulate cap 10 and spring 9; Regulate cap 10 and spring 9 and be limited between the boss and central tube 8 bottom protrusion annulus of bottom, regulating cap 10 can be by external screw thread regulating spring 9 compression distance of central tube 8 bottoms; The internal thread of central tube 8 bottoms is threaded with pipe nipple 11; Central tube 8 has two pod apertures at sliding sleeve 6 sliding position places, and boss is arranged at central tube 8 bottoms; There is lead channel at sliding sleeve 6 a two ends wherein end, and the other end has boss, and there is pod apertures at the middle part, and pod apertures is communicated with lead channel; The length of sliding sleeve 6 is greater than the reduction length of spring 9; Seal 3, sealing ring 4, sealing ring 5 and sealing ring 7 are arranged on joint 1, overcoat 2 and the sliding sleeve 6, guarantee sealing; When the fluid in the central tube 8 produces supercharging; fluid in the central tube 8 enters in the closed chamber of joint 1, overcoat 2, sliding sleeve 6 and central tube 8 formation by the pod apertures of central tube 8 and the lead channel of sliding sleeve 6; when pressure reaches setting value; promote to end when sliding sleeve 6 comes downwards to sliding sleeve 6 pod apertures and exposes overcoat 2; the interior fluid of closed chamber this moment leaks; after sliding sleeve 6 pressure releases, during less than fluid sliding sleeve 6 releases in adjusting cap 10 setup pressure value and the central tube 8, guarantee sliding sleeve 6 returns by spring 9 spring power.This embodiment is a most preferred embodiment.
Embodiment 2 as shown in Figure 1, its joint 1 joint, overcoat 2, sliding sleeve 6, central tube 8, spring 9 are identical with the prior art structure, transferring sealing ring joint cap 10, pipe nipple 11 and seal 3, sealing ring 4, sealing ring 5, sealing ring 7 is structures of the present utility model; Between its central tube 8 and the overcoat 2 sliding sleeve 6 is arranged; Central tube 8 has two pod apertures at sliding sleeve 6 sliding position places, is socketed with in turn on the central tube 8 to regulate cap 10 and spring 9; Adjusting cap 10 and spring 9 are limited between the boss and central tube 8 bottom protrusion annulus of bottom, and the internal thread of central tube 8 bottom protrusion annulus is threaded with pipe nipple 11, so that regulate external screw thread regulating spring 9 compression distances of cap 10 by central tube 8 afterbodys; There is lead channel at sliding sleeve 6 a two ends wherein end, and the other end has boss, and there is pod apertures at sliding sleeve 6 middle parts, and pod apertures is communicated with lead channel, and the length of sliding sleeve 6 is greater than the reduction length of spring 9.
Claims (3)
1, a kind of oilfield well completion constant pressure valve, it comprises joint (1), overcoat (2), sliding sleeve (6), central tube (8), spring (9), it is characterized in that: between central tube (8) and the overcoat (2) sliding sleeve (6) is arranged; Central tube (8) has two pod apertures at sliding sleeve (6) sliding position place, is socketed with in turn on the central tube (8) to regulate cap (10) and spring (9); Adjusting cap (10) and spring (9) are limited between the boss and central tube (8) bottom protrusion annulus of sliding sleeve (6) bottom, the internal thread of central tube (8) tail protrusion annulus is threaded with pipe nipple (11), so that regulate external screw thread regulating spring (9) compression distance of cap (10) by central tube (8) afterbody; Sliding sleeve (6) one ends have lead channel, and there is pod apertures at sliding sleeve (6) middle part, and pod apertures is communicated with lead channel, and the length of sliding sleeve (6) is greater than the reduction length of spring (9).
2, a kind of oilfield well completion constant pressure valve according to claim 1 is characterized in that: inside and outside described joint (1) one end screw thread is arranged respectively, wherein external screw thread is connected with overcoat (2) threaded one end, and internal thread is threaded with central tube (8).
3, a kind of oilfield well completion constant pressure valve according to claim 1 is characterized in that: be socketed with seal (3), sealing ring (4), sealing ring (5) and sealing ring (7) on described joint (1), overcoat (2) and the sliding sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202282375U CN201321840Y (en) | 2008-12-15 | 2008-12-15 | Constant pressure valve used for oil field well completion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202282375U CN201321840Y (en) | 2008-12-15 | 2008-12-15 | Constant pressure valve used for oil field well completion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201321840Y true CN201321840Y (en) | 2009-10-07 |
Family
ID=41159225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202282375U Expired - Fee Related CN201321840Y (en) | 2008-12-15 | 2008-12-15 | Constant pressure valve used for oil field well completion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201321840Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434996A (en) * | 2013-08-05 | 2013-12-11 | 辽河石油勘探局 | Connecting method for oil-submerged pump oiling machine with intercepting valve and oil supply pipeline |
| CN104234662A (en) * | 2014-09-12 | 2014-12-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Variable-diameter sliding sleeve switch |
-
2008
- 2008-12-15 CN CNU2008202282375U patent/CN201321840Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434996A (en) * | 2013-08-05 | 2013-12-11 | 辽河石油勘探局 | Connecting method for oil-submerged pump oiling machine with intercepting valve and oil supply pipeline |
| CN104234662A (en) * | 2014-09-12 | 2014-12-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Variable-diameter sliding sleeve switch |
| CN104234662B (en) * | 2014-09-12 | 2016-09-14 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of reducing sliding sleeve switch |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20161215 |