CN201269068Y - Combined well head moving seal apparatus - Google Patents
Combined well head moving seal apparatus Download PDFInfo
- Publication number
- CN201269068Y CN201269068Y CNU2008200912144U CN200820091214U CN201269068Y CN 201269068 Y CN201269068 Y CN 201269068Y CN U2008200912144 U CNU2008200912144 U CN U2008200912144U CN 200820091214 U CN200820091214 U CN 200820091214U CN 201269068 Y CN201269068 Y CN 201269068Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- plunger
- seal
- well head
- joint
- 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 - Lifetime
Links
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to a compound wellhead dynamic sealing device which mainly solves the problems of poor sealing performance and low service life existing the prior wellhead sealing device. The compound wellhead dynamic sealing device is characterized in that the upper end of a catch hoop short connection (1) is connected with an oil sinking pipe (2) through threads, the lower end of the oil sinking pipe (2) is sequentially connected with a sealing cylinder (3) and a sealing cylinder lower joint (11), a traction joint (4) is embedded in the sealing cylinder (3), the lower end of the traction joint (4) is connected with an upper sealing plunger (7), the lower end of the upper sealing plunger (7) is connected with a lower sealing plunger (9) through a universal joint (8), the lower end of the lower sealing plunger (9) is connected with a sealing joint (10), and the upper ends and the lower ends of the upper sealing plunger (7) and the lower sealing plunger (9) are respectively connected with a lock nut (6) and a soft sealing (5). The compound wellhead dynamic sealing device has the advantages of reliable sealing, simple maintenance and long service life.
Description
Technical field:
The utility model relates to the used sealing device of well head, especially combined type well head dynamic sealing device in the oil recovery field, oil field.
Background technology:
Along with Oilfield developing, technology constantly develops, and is more and more higher to the well head seal request, to adapt to the needs of different oil production technology.Well mouth sealing device is a kind of equipment that oil field machinery oil generally uses, at present, the sealing device that oil field shaft mouth uses seals by packing in the packing box and polished rod mostly, the sealing device of this structure is because reasons in structure, ubiquity poor sealing performance, shortcomings such as the life-span is low are not well solved for many years.
The utility model content:
In order to solve the poor sealing performance that the existing well mouth sealing device exists, the problem that the life-span is low, the utility model provides a kind of combined type well head dynamic sealing device, this combined type well head dynamic sealing device have sealing reliable, safeguard characteristics simple, that the life-span is long.
The technical solution of the utility model is: this combined type well head dynamic sealing device comprises the clip short circuit that little four-way upper end connects, clip short circuit upper end is by the heavy oil pipe that has been threaded, heavy oil pipe lower end connects sealing drum and sealing drum lower contact successively, sealing drum is built-in with tow attachment, the tow attachment lower end is connected with sealed plunger, last sealed plunger lower end is connected with the lower seal plunger by universal joint, lower seal plunger lower end is connected with seal nipple, and last sealed plunger and lower seal plunger upper and lower side are connected with locking nut and soft seal respectively.
The utlity model has following beneficial effect: this combined type well head dynamic sealing device is owing to take such scheme, the hard sealing of upper-lower seal plunger and two kinds of compound seal modes of soft seal soft seal have been adopted, improve sealing reliability, prolonged application life, make and safeguard simply, save a large amount of human, financial, and material resources power, solved the problem that does not obtain fine solution for many years, have simple in structurely, effective, implement, the characteristics of application.This combined type well head dynamic sealing device has the advantages that sealing is reliable, maintenance is simple, the life-span is long thus.
Description of drawings:
Accompanying drawing 1 is the utility model structural representation.
1-clip short circuit among the figure, 2-sink oil pipe, 3-sealing drum, 4-tow attachment, 5-soft seal, 6-locking nut, the last sealed plunger of 7-, 8-universal joint, 9-lower seal plunger, 10-seal nipple, the lower contact of 11-sealing drum.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this combined type well head dynamic sealing device comprises the clip short circuit 1 that little four-way upper end connects, clip short circuit 1 upper end is by the heavy oil pipe 2 that has been threaded, heavy oil pipe 2 lower ends connect sealing drum 3 and sealing drum lower contact 11 successively, sealing drum 3 is built-in with tow attachment 4, tow attachment 4 connects oil pumper by polished rod eye, tow attachment 4 lower ends are connected with sealed plunger 7, last sealed plunger 7 lower ends are connected with lower seal plunger 9 by universal joint 8, and sealing drum 3 is formed hard sealing with last sealed plunger 7 and lower seal plunger 9.Lower seal plunger 9 lower ends are connected with seal nipple 10, seal nipple 10 connects oil pump plunger piston by sucker rod, last sealed plunger 7 and lower seal plunger 9 upper and lower sides are connected with locking nut 6 and soft seal 5 respectively, regulate soft seal 5 by locking nut 6, and soft seal 5 plays the enhanced leaktightness effect.
During actual the use, soft seal 5, the locking nut 6 that at first will go up sealed plunger 7 and lower seal plunger 9 upper and lower sides connect, connect universal joint 8 then, seal nipple under the lower seal plunger 9 10 is linked to each other with sucker rod, place in the sealing drum 3, sealing drum lower contact 11 is connected sealing drum 3 lower ends, sealing drum 3 upper ends are connected with heavy oil pipe 2, to sink oil pipe 2 upper ends again is connected with the internal thread of clip short circuit 1, at last tow attachment 4 and oil pumper drive disk assembly is connected, and can normally use.Owing to adopted last sealed plunger 7 and lower seal plunger 9 hard sealing and two kinds of compound seal modes of soft seal 5 soft seals, sealed plunger 7 and lower seal plunger 9 are realized hard sealing in the utilization, realize soft seal by 4 groups of soft seals 5, last sealed plunger 7 and lower seal plunger 9 and soft seal 5 are along with sucker rod pumps, well liquid is isolated in the lower seal plunger 9 times, well liquid flows out well head from ring cavity between sealing drum 3 and tubing string, reach the purpose of compound seal, improve sealing reliability, reduced the height of well head, make the oil pumper suspension point also decrease, change into movable sealing, reduce frictional resistance by mechanical seal.And prolonged application life, and make to safeguard simply, save a large amount of human, financial, and material resources power, solved the problem that does not obtain fine solution for many years, have simple in structurely, effective, be convenient to implement the characteristics of application.This combined type well head dynamic sealing device has the advantages that sealing is reliable, maintenance is simple, the life-span is long thus.
Claims (1)
1, a kind of combined type well head dynamic sealing device, comprise the clip short circuit (1) that little four-way upper end connects, it is characterized in that: clip short circuit (1) upper end is by the heavy oil pipe (2) that has been threaded, heavy oil pipe (2) lower end connects sealing drum (3) and sealing drum lower contact (11) successively, sealing drum (3) is built-in with tow attachment (4), tow attachment (4) lower end is connected with sealed plunger (7), last sealed plunger (7) lower end is connected with lower seal plunger (9) by universal joint (8), lower seal plunger (9) lower end is connected with seal nipple (10), and last sealed plunger (7) and lower seal plunger (9) upper and lower side are connected with locking nut (6) and soft seal (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200912144U CN201269068Y (en) | 2008-10-28 | 2008-10-28 | Combined well head moving seal apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200912144U CN201269068Y (en) | 2008-10-28 | 2008-10-28 | Combined well head moving seal apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269068Y true CN201269068Y (en) | 2009-07-08 |
Family
ID=40841667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200912144U Expired - Lifetime CN201269068Y (en) | 2008-10-28 | 2008-10-28 | Combined well head moving seal apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201269068Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387036A (en) * | 2017-09-14 | 2017-11-24 | 东营和辉石油技术有限责任公司 | Oil extraction equipment for high-water-content oil well |
-
2008
- 2008-10-28 CN CNU2008200912144U patent/CN201269068Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387036A (en) * | 2017-09-14 | 2017-11-24 | 东营和辉石油技术有限责任公司 | Oil extraction equipment for high-water-content oil well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201269068Y (en) | Combined well head moving seal apparatus | |
| CN201225114Y (en) | Downhole hydraulic self-sealing flexible plunger seal oil conduit type well head seal device | |
| CN201034022Y (en) | Eccentric-wear preventive eccentric adaptor of pumping rod | |
| CN203297087U (en) | Efficient protective oil pumping device | |
| CN206144766U (en) | Super -long -stroke oil pump | |
| CN204532133U (en) | A kind of piston type intelligent conversion joint | |
| CN201184171Y (en) | Bias-wearing-proof pumping unit | |
| CN201843768U (en) | Reciprocating type water injection pump oil check head | |
| CN1056436C (en) | Multiple-range oil-well pump | |
| CN200946487Y (en) | Hydraulic pumping device | |
| CN203098229U (en) | Oil-submersible pump anti-jacking and sealing anchoring device driven by linear motor | |
| CN202745804U (en) | Outer channeling groove lugging device of oil-water well sleeve | |
| CN203394717U (en) | Traveling valve tandem type long plunger rod type oil well pump | |
| CN2797618Y (en) | Wellhead sealing device for single crank, double-stroke and flexible rope type oil sucking system | |
| CN201916170U (en) | Oil-well pump | |
| CN201047271Y (en) | Oil pumping motor-pumped well de-loading machine | |
| CN201474653U (en) | Oil well double ball-joint deflection regulating automatic blowout preventer | |
| CN2773345Y (en) | Plunger-type oil-well pump with direct underground dynamic drive | |
| CN202788709U (en) | Sealing and stringing device for sleeve of oil-water well | |
| CN101666218B (en) | Double-sealing packing box for oil field wellhead and wellhead double-sealing method | |
| CN201786333U (en) | Energy-saving pumping unit | |
| CN104747139B (en) | Hydraulic drive type oil extraction system | |
| CN201884005U (en) | Sucker rod string accelerator | |
| CN201218074Y (en) | Sealing polished rod type shaft mouth sealing device for down-hole hydraulic self-sealing packing kit | |
| CN202249886U (en) | Self-lubricating well head sealer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090708 |