CN202810776U - High pressure expanding type well-flushing packer - Google Patents
High pressure expanding type well-flushing packer Download PDFInfo
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- CN202810776U CN202810776U CN 201220555696 CN201220555696U CN202810776U CN 202810776 U CN202810776 U CN 202810776U CN 201220555696 CN201220555696 CN 201220555696 CN 201220555696 U CN201220555696 U CN 201220555696U CN 202810776 U CN202810776 U CN 202810776U
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- inlet opening
- well
- flushing
- high pressure
- central tube
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Abstract
The utility model provides a high pressure expanding type well-flushing packer, which comprises an upper joint, wherein the upper joint is connected with a center pipe, the upper joint is connected with an upper connecting sleeve, the lower end of the upper connecting sleeve is connected with the middle of an upper work drum, a well-flushing piston is arranged in a cavity which is arranged between the upper portion of the upper work drum and the upper connecting sleeve, the well-flushing piston is connected with a rubber ring pressure cap through inner threads which are arranged on the lower end, the upper work drum is connected with a rubber tube assembly, the rubber tube assembly is connected with a lower work drum, the center pipe is connected with a lower joint, a convex platform and a liquid inlet hole E are arranged on the outer wall of the center pipe along the circumferential direction, a sealing sleeve is sleeved on the outer wall of the center pipe which is corresponding to the convex platform and the liquid inlet hole E, a protection sleeve is sleeved outside the sealing sleeve, and the protection sleeve is connected with a pressure adjusting nut through outer threads. The high pressure expanding type well-flushing packer can be packed and unpacked for many times when descending a well once, uses a flushing mode that the high pressure expanding type well-flushing packer is unpacked to be flushed, a well-flushing channel is large, and the high pressure expanding type well-flushing packer is thoroughly flushed. The rubber tube assembly of the high pressure expanding type well-flushing packer strengthens high pressure resistance ability, and can resist sulfuretted hydrogen. The high pressure expanding type well-flushing packer is simple in structure and convenient to operate.
Description
Technical field
The utility model relates to the used packer in oil recovery field, especially a kind of high pressure expanding type washable well packer.
Background technology
[0002] during the oilfield exploitation seperated layer water injection, packer is a kind of downhole tool of commonly using, utilizes packer multiple zone can be divided into some intervals, and it is the effective ways of realizing oil field stable high yield that the oil reservoir of different permeabilities is carried out the subdivision of reservoir water filling.At present, touch mutually by sulfuration head and central tube at most packing elements two ends, makes the packing element two ends relatively thin, and pressure-bearing is low.Complex structure, cost is high, and the well-flushing passage is little.
Summary of the invention
The technical problem that exists in order to solve background technology, the utility model provides a kind of high pressure expanding type washable well packer, and this packer is once gone into the well and can repeatedly be set deblocking; The well-flushing mode is the removing seal for packer well-flushing, and the well-flushing passage is large, and well-flushing is thorough; This packing element assembly is strengthened can be high pressure resistant; Packing element assembly energy anti-H 2 S; Simple in structure, easy to operate.
The technical solution of the utility model is: this high pressure expanding type washable well packer comprises top connection, top connection is connected with central tube by the lower end internal thread, inlet opening A is arranged at central tube top, inlet opening B, top connection is connected with upper joint sleeve by the lower end external screw thread, inlet opening is arranged at the upper joint sleeve bottom, the upper joint sleeve lower end is by internal thread and the middle part that is connected seating nipple, upper seating nipple is that stepped top extends to the inner chamber between upper joint sleeve and the central tube, inlet opening C and inlet opening D are arranged at upper seating nipple top, upper seating nipple upper inside surface has annular groove and communicates with inlet opening C, be provided with the well-flushing piston in the chamber between upper seating nipple top and the upper joint sleeve, the well-flushing piston is connected with the cushion rubber pressure cap by the lower end internal thread, the well-flushing piston is inlaid with in the bottom surface " L " the shape cushion rubber, cushion rubber pressure cap inwall has annular groove, upper seating nipple is connected with the packing element assembly by the middle part internal thread, the packing element assembly is connected with lower seating nipple by the lower end external screw thread, central tube is connected with lower contact by the lower end external screw thread, the edge is circumferentially with boss on the central tube outer wall of lower contact top, the central tube of boss top has inlet opening E, the central tube outer wall cover that boss and inlet opening E are corresponding has sealing shroud, the sealing shroud outer cover has sheath, and sheath is connected with look nut by external screw thread.
The utlity model has following beneficial effect: this packer is once gone into the well and can repeatedly be set deblocking; The well-flushing mode is the removing seal for packer well-flushing, and the well-flushing passage is large, and well-flushing is thorough; This packing element assembly is strengthened can be high pressure resistant; Packing element assembly energy anti-H 2 S; Simple in structure, easy to operate.
Description of drawings:
Accompanying drawing 1 is the utility model structural representation.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this high pressure expanding type washable well packer comprises top connection 1, top connection 1 is connected connection by the lower end internal thread with central tube, inlet opening A 21 is arranged at central tube 8 tops, inlet opening B 22, top connection 1 is connected connection by the lower end external screw thread with upper joint sleeve, inlet opening 17 is arranged at upper joint sleeve 2 bottoms, upper joint sleeve 2 lower ends are by internal thread and the middle part that is connected seating nipple 6, upper seating nipple 6 is that stepped top extends to the inner chamber between upper joint sleeve 2 and the central tube 8, inlet opening C 19 and inlet opening D 18 are arranged at upper seating nipple 6 tops, upper seating nipple 6 upper inside surface have annular groove 20 and communicate with inlet opening C 19, be provided with well-flushing piston 3 in the chamber between upper seating nipple 6 tops and the upper joint sleeve 2, well-flushing piston 3 is connected with cushion rubber pressure cap 5 by the lower end internal thread, the well-flushing piston is inlaid with in 3 bottom surfaces " L " shape cushion rubber 4, cushion rubber pressure cap 5 inwalls have annular groove 16, upper seating nipple 6 is connected with packing element assembly 7 by the middle part internal thread, packing element assembly 7 is connected with lower seating nipple 9 by the lower end external screw thread, central tube 8 is connected connection by the lower end external screw thread with lower contact, the edge is circumferentially with boss 14 on central tube 8 outer walls of lower contact 13 tops, the central tube 8 of boss 14 tops has inlet opening E 15, the central tube 8 outer wall covers of boss 14 and inlet opening E 15 correspondences have sealing shroud 11, sealing shroud 11 outer cover have sheath 12, and sheath 12 is connected with look nut 10 by external screw thread.Look nut 10, sealing shroud 11, sheath 12 form the pressure regulation assembly, in the cavity that centering pipe 8 and lower seating nipple 9 form, regulate by the pressure that enters liquid in the cavity in the central tube 8 by inlet opening E 15.Sealing ring is equipped with in sealing place.
Packer setting: suppress in the tubing string, liquid enters to act on through central tube inlet opening A 21 and makes inlet opening B 22, inlet opening C 19 and inlet opening D18 sealing in the well-flushing piston assembly, liquid in pipe enters packing element assembly 7 inside through central tube inlet opening E 15 is affixed on the internal surface of sleeve pipe 7 expansions of packing element assembly, packer setting, liquid in the packing element assembly 7 can't be got back in the central tube 8 by the pressure regulation assembly, so packer still is in the state of setting after interior pressure removes.
Packer well-washing: annular space is suppressed on the packer, liquid enters by upper joint sleeve 2 lower end inlet openings 17, act in the well-flushing piston assembly, make on the well-flushing piston 3 and move, the annular groove 16 of well-flushing piston 3 inner surfaces is communicated with inlet opening B 22, inlet opening C 19 and inlet opening D18, liquid in the packing element assembly 7 is released, and removing seal for packer carries out well-flushing.Suppress in the complete central tube 8 of well-flushing, liquid enters through central tube 8 inlet opening A 21 and acts on the well-flushing piston assembly and exercise up and down inlet opening B 22, inlet opening C 19 and inlet opening D18 sealing, and packer sets again.
Removing seal for packer: annular space is suppressed on the packer, liquid enters by upper joint sleeve 2 lower end inlet openings 17, act in the well-flushing piston assembly, make on the well-flushing piston 3 and move, the annular groove 16 of well-flushing piston 3 inner surfaces is communicated with inlet opening B 22, inlet opening C 19 and inlet opening D18, under the effect of packing element assembly 7 screen resiliences, make the liquid in the packing element assembly 7 release removing seal for packer.
Claims (3)
1. high pressure expanding type washable well packer, comprise top connection (1), it is characterized in that: top connection (1) is connected 8 by the lower end internal thread with central tube) connect, inlet opening A (21) is arranged at central tube (8) top, inlet opening B (22), top connection (1) is connected 2 by the lower end external screw thread with upper joint sleeve) connect, inlet opening (17) is arranged at upper joint sleeve (2) bottom, upper joint sleeve (2) lower end is by internal thread and the middle part that is connected seating nipple (6), upper seating nipple (6) is that stepped top extends to the inner chamber between upper joint sleeve (2) and the central tube (8), inlet opening C (19) and inlet opening D (18) are arranged at upper seating nipple (6) top, upper seating nipple (6) upper inside surface has annular groove (20) and communicates with inlet opening C (19), be provided with well-flushing piston (3) in the chamber between upper seating nipple (6) top and the upper joint sleeve (2), well-flushing piston (3) is connected with cushion rubber pressure cap (5) by the lower end internal thread, well-flushing piston (3) is inlaid with in the bottom surface " L " shape cushion rubber (4), cushion rubber pressure cap (5) inwall has annular groove (16), upper seating nipple (6) is connected with packing element assembly (7) by the middle part internal thread, packing element assembly (7) is connected with lower seating nipple (9) by the lower end external screw thread, central tube (8) is connected 13 by the lower end external screw thread with lower contact) connect, the edge is circumferentially with boss (14) on central tube (8) outer wall of lower contact (13) top, the central tube (8) of boss (14) top has inlet opening E (15), central tube (8) the outer wall cover that boss (14) and inlet opening E (15) are corresponding has sealing shroud (11), sealing shroud (11) outer cover has sheath (12), and sheath (12) is connected with look nut (10) by external screw thread.
2. high pressure expanding type washable well packer according to claim 1, it is characterized in that: look nut (10), sealing shroud (11), sheath (12) form the pressure regulation assembly, in the cavity that centering pipe (8) and lower seating nipple (9) form, regulate by the pressure that enters liquid in the cavity in the central tube (8) by inlet opening E (15).
3. high pressure expanding type washable well packer according to claim 1, it is characterized in that: sealing ring is equipped with in sealing place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555696 CN202810776U (en) | 2012-10-28 | 2012-10-28 | High pressure expanding type well-flushing packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220555696 CN202810776U (en) | 2012-10-28 | 2012-10-28 | High pressure expanding type well-flushing packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810776U true CN202810776U (en) | 2013-03-20 |
Family
ID=47869674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220555696 Expired - Lifetime CN202810776U (en) | 2012-10-28 | 2012-10-28 | High pressure expanding type well-flushing packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810776U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485745A (en) * | 2013-08-16 | 2014-01-01 | 刘新东 | Expandable leakproof well cleanout packer |
| CN103590780A (en) * | 2013-11-27 | 2014-02-19 | 中国石油化工股份有限公司 | High-temperature high-pressure large-drift-diameter hydraulic sleeve packer |
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN104653145A (en) * | 2013-11-25 | 2015-05-27 | 天津大港油田钻采技术开发公司 | Long-rubber-barrel differential pressure type water filling packer capable of washing well |
| CN106761538A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Long packing element packer for oil field isolation |
| CN111472712A (en) * | 2020-04-13 | 2020-07-31 | 邵玉强 | Packer |
-
2012
- 2012-10-28 CN CN 201220555696 patent/CN202810776U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485745A (en) * | 2013-08-16 | 2014-01-01 | 刘新东 | Expandable leakproof well cleanout packer |
| CN103485745B (en) * | 2013-08-16 | 2015-12-09 | 刘新东 | Expanding leak-proof well-washing packer |
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN104653145A (en) * | 2013-11-25 | 2015-05-27 | 天津大港油田钻采技术开发公司 | Long-rubber-barrel differential pressure type water filling packer capable of washing well |
| CN103590780A (en) * | 2013-11-27 | 2014-02-19 | 中国石油化工股份有限公司 | High-temperature high-pressure large-drift-diameter hydraulic sleeve packer |
| CN106761538A (en) * | 2016-12-23 | 2017-05-31 | 中国石油天然气股份有限公司 | Long packing element packer for oil field isolation |
| CN111472712A (en) * | 2020-04-13 | 2020-07-31 | 邵玉强 | Packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |