CN100419207C - Oil well head sealing device - Google Patents
Oil well head sealing device Download PDFInfo
- Publication number
- CN100419207C CN100419207C CNB2006100448437A CN200610044843A CN100419207C CN 100419207 C CN100419207 C CN 100419207C CN B2006100448437 A CNB2006100448437 A CN B2006100448437A CN 200610044843 A CN200610044843 A CN 200610044843A CN 100419207 C CN100419207 C CN 100419207C
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- seal receptacle
- oil
- polished rod
- oil well
- seal
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Abstract
The present invention discloses an oil wellhead sealing device. The present invention comprises a deflection adjuster connected with an oil well joint, wherein a second sealing seat for an oil extraction polished rod to pass through, a first sealing seat, a sleeve barrel and a press cover are orderly arranged on the upper end of the deflection adjuster, and an inverted taper inner cavity is respectively arranged on the sealing seat and the first sealing seat. A second taper sealing body is arranged between the taper inner cavity of the second sealing seat and the oil extraction polished rod, a first taper sealing body is arranged between the taper inner cavity of the first sealing seat and the oil extraction polished rod, an elasticity device of a cone top, which pushes the first taper sealing body to the taper inner cavity of the first sealing seat, is arranged in the sleeve barrel, and the second sealing seat is in screw connection with the first sealing seat. The present invention realizes the sealing of the oil extraction polished rod at oil wellheads, the service life of the oil wellhead sealing device is extended, and the replacement of the oil wellhead sealing device is realized under a normal work state.
Description
Technical field
The present invention relates to a kind of oil well corollary apparatus, especially relate to a kind of oil well head sealing device that can seal the oil recovery polished rod at production wellhead place.
Background technology
Utilizing oil recovery polished rod mechanical oil recovery is the most general oil production technology in the present oilfield exploitation, in order to prevent the sealing problem of oil well mouth place oil recovery polished rod in process of production, thereby stop " run, emit, leak " the oily phenomenon at oil well head place, people are provided with the sealing device of oil recovery polished rod at oil well mouth place, as adopting primary seal device, biplane sealer and spherical deviation adjustment type sealer etc.But above-mentioned sealer ubiquity shortcomings such as sealing performance is not good, and after these sealing devices use a period of time, owing to the sealed packing in it and the wearing and tearing between the oil recovery polished rod produce certain interval, lost sealing function to the oil recovery polished rod, and need stop oil producing operation when changing packing, then reduced the oil recovery efficiency of oil well.Therefore, the current sealing device ubiquity that is used for the well recovery polished rod shortcomings such as fragile, that life cycle is short.
Summary of the invention
Technical problem to be solved by this invention has provided a kind of oil well head sealing device, it has not only realized the sealing of oil well mouth place's oil recovery polished rod, and prolonged application life of oil well head sealing device, and realized changing in normal operation seal, reduced and stopped the well time, improved oil recovery efficiency.
For solving the problems of the technologies described above, technical scheme of the present invention is: oil well head sealing device, comprise the deviation correcting device that is connected with the oil well joint, and the deviation correcting device upper end is provided with second seal receptacle, first seal receptacle, sleeve and the gland that can hold the oil recovery polished rod and pass successively; Described first seal receptacle is provided with the inverted-cone shape inner chamber, is provided with the first cone seal body between the first seal receptacle conical internal cavity and the oil recovery polished rod, is provided with the elastic device of the first cone seal body being pushed to the first seal receptacle conical internal cavity vertex of a cone in the described sleeve; Described second seal receptacle and first seal receptacle are threaded, and described second seal receptacle is provided with the inverted-cone shape inner chamber, are provided with the second cone seal body between the second seal receptacle conical internal cavity and the oil recovery polished rod; Be provided with pressure cylinder between described sleeve and the gland, less than sleeve diameter, described pressure cylinder inner chamber upper end is hinged with the baffle plate in shutoff gland hole to the pressure cylinder internal diameter, is provided with pressing plate between sleeve and the pressure cylinder greater than the gland aperture, pressing plate is provided with the U-shaped opening, and described baffle plate free end is rotatable to be stretched in the pressing plate U-shaped opening.
As a kind of improvement, described elastic device is the spring that is arranged in the sleeve.
As further improvement, described deviation correcting device comprises the ring-shaped clip and the adjustment body that is connected with second seal receptacle with oil well joint suit, the inwall of described clip is provided with the annular radial groove, and described accent is provided with the annular lip that stretches into annular recess and be sealed and matched with it on the whole.
Owing to adopted the oil well head sealing device of said structure, by in second seal receptacle that connects successively and first seal receptacle, being provided with inverted conical internal cavity, and in inverted conical internal cavity, be respectively equipped with the second cone seal body and the first cone seal body, and the first cone seal body is pushed to the vertex of a cone of the first seal receptacle conical internal cavity by the elastic device in the sleeve, make it to be in a kind of contact seal state with the oil recovery polished rod all the time, guaranteed sealing, solved " run, emit, leak " the oily phenomenon that causes because of the slit of seal wearing and tearing generation the oil recovery polished rod; Adopt between second seal receptacle and first seal receptacle to be threaded, then realized not stopping to change under the situation of oil producing operation the seal of wearing and tearing, improved the oil recovery efficiency of oil well at the oil recovery polished rod.The setting of pressure cylinder and pressure cylinder Internal baffle can be implemented under the situation of oil recovery polished rod breaking releasing and can seal well mouth of oil well automatically, has prevented the generation of blowout phenomenon, has prevented crude oil pollution ground and has caused loss in the production.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
Accompanying drawing is an oil well head sealing device structural representation of the present invention.
The specific embodiment
With reference to the accompanying drawings, a kind of oil well head sealing device of the present invention is: comprise the deviation correcting device 7 that is connected with oil well joint 1, be connected with second seal receptacle 3, first seal receptacle 2, sleeve 4 and gland 6 successively in the upper end of deviation correcting device 7, the oil recovery polished rod passes gland 6, sleeve 4, first seal receptacle 2, second seal receptacle 3 and deviation correcting device 7 successively and inserts in the oil well joint 1.In second seal receptacle 3 and first seal receptacle 2, be respectively equipped with inverted conical internal cavity, between the conical internal cavity of first seal receptacle 2 and oil recovery polished rod, be provided with the first cone seal body 21, and in sleeve 4, be provided with elastic device 41, as the spring in the accompanying drawing, or other are as spring leaf, the first cone seal body 21 is pushed to the vertex of a cone of first seal receptacle, 2 conical internal cavities by spring, such first cone seal body 21 is in a kind of contact seal state with the oil recovery polished rod all the time, has guaranteed the oil recovery polished rod seal; And between the conical internal cavity of second seal receptacle 3 and oil recovery polished rod, be provided with the second cone seal body 31, and second seal receptacle 3 and first seal receptacle 2 are threaded, such structure, make the second cone seal body 31 good seal between the first cone seal body 21 and oil recovery polished rod, do not contact under the normal situation of the first cone seal body, 21 sealing performancies with the oil recovery polished rod, and when 21 damages of the first cone seal body need to change, turn first seal receptacle 2, the vertex of a cone of the second cone seal body 31 to second seal receptacle, 3 conical internal cavities promoted, oppressing the second cone seal body 31 contacts with the oil recovery polished rod, realization is to the sealing of oil recovery polished rod, like this, just can be implemented in the seal of changing wearing and tearing under the situation that does not stop oil producing operation, improved the oil recovery efficiency of oil well.
As shown in the drawing, between sleeve 4 and gland 6, can be provided with pressure cylinder 5, and the internal diameter of pressure cylinder 5 greater than the aperture on the gland 6 less than the internal diameter of sleeve 4, upper end at pressure cylinder 5 inner chambers is hinged with baffle plate 52, between sleeve 4 and pressure cylinder 5, be provided with pressing plate 51, on pressing plate 51, be provided with the U-shaped opening, in the U-shaped opening that stretches into pressing plate 51 that the free end of baffle plate 52 can rotate.Like this, when oil recovery polished rod operate as normal is recovered the oil, the free end of baffle plate 52 is positioned at the U-shaped opening of pressing plate 51, do not influence the operate as normal of whole oil well head sealing device, and when oil recovery beam hanger breaking releasing, gas mixture in the oil well just can go out to the well head jet flow, and the rotation shutoff was on the hole of gland 6, to prevent the generation of oil-well blowing phenomenon under baffle plate 52 can promote in the gas mixture surge of ejection.
Deviation correcting device 7 in this oil well head sealing device can be as shown in the drawing, comprise ring-shaped clip 11 and the adjustment body 71 that is connected with second seal receptacle 3 with oil well joint 1 suit, on the inwall of clip 11, be provided with the annular radial groove, and on adjustment body 71, be provided with the annular lip that stretches into annular recess and be sealed and matched with it.When the oil recovery polished rod enters oil well work, in the twitch process, can produce and rock, this time, the degree of skewness that adjustment body 71 can be twitched up and down according to the oil recovery polished rod at the annular recess of clip 11 moves, automatically the oil recovery polished rod is transferred to correct position, after the oil recovery polished rod was adjusted to correct position, adjustment body 71 will freely be fixed, thereby had realized the offset function of oil well head sealing device.
Claims (3)
1. oil well head sealing device comprises the deviation correcting device (7) that is connected with oil well joint (1), and deviation correcting device (7) upper end is provided with second seal receptacle (3), first seal receptacle (2), sleeve (4) and the gland (6) that can hold the oil recovery polished rod and pass successively; Described first seal receptacle (2) is provided with the inverted-cone shape inner chamber, be provided with the first cone seal body (21) between first seal receptacle (2) conical internal cavity and the oil recovery polished rod, be provided with the elastic device (41) of the first cone seal body (21) being pushed to first seal receptacle (2) the conical internal cavity vertex of a cone in the described sleeve (4); It is characterized in that: described second seal receptacle (3) and first seal receptacle (2) are threaded, and described second seal receptacle (3) is provided with the inverted-cone shape inner chamber, are provided with the second cone seal body (31) between second seal receptacle (3) conical internal cavity and the oil recovery polished rod; Be provided with pressure cylinder (5) between described sleeve (4) and the gland (6), pressure cylinder (5) internal diameter greater than gland (6) aperture less than sleeve (4) internal diameter, described pressure cylinder (5) inner chamber upper end is hinged with the baffle plate (52) in shutoff gland (6) hole, be provided with pressing plate (51) between sleeve (4) and the pressure cylinder (5), pressing plate (51) is provided with the U-shaped opening, and described baffle plate (52) free end is rotatable to be stretched in pressing plate (51) the U-shaped opening.
2. oil well head sealing device according to claim 1 is characterized in that described elastic device (41) is for being arranged on the spring in the sleeve.
3. oil well head sealing device according to claim 1 and 2, it is characterized in that described deviation correcting device (7) comprises the ring-shaped clip (11) and the adjustment body (71) that is connected with second seal receptacle (3) with oil well joint (1) suit, the inwall of described clip (11) is provided with the annular radial groove, and described adjustment body (71) is provided with the annular lip that stretches into annular recess and be sealed and matched with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100448437A CN100419207C (en) | 2006-06-16 | 2006-06-16 | Oil well head sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100448437A CN100419207C (en) | 2006-06-16 | 2006-06-16 | Oil well head sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865651A CN1865651A (en) | 2006-11-22 |
| CN100419207C true CN100419207C (en) | 2008-09-17 |
Family
ID=37424776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100448437A Expired - Fee Related CN100419207C (en) | 2006-06-16 | 2006-06-16 | Oil well head sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100419207C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195573A (en) * | 2019-05-24 | 2019-09-03 | 唐海燕 | Multifunctional oil-extractor well mouth protector and operating method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104288U (en) * | 1991-07-23 | 1992-05-13 | 山东省广饶县大王化工机械配件厂 | Light rod seal and centering unit for oil field oil-well portal |
| CN2197455Y (en) * | 1994-07-28 | 1995-05-17 | 李学福 | Adjustable sealing box for oil well top |
| CN2272047Y (en) * | 1995-03-06 | 1998-01-07 | 张文斗 | Pumping wellhead rod packing device |
| CN2401692Y (en) * | 1999-11-28 | 2000-10-18 | 王若峰 | Automatic sealed polish rod packing device |
| CN2732987Y (en) * | 2004-10-16 | 2005-10-12 | 高忠平 | Wellhead sealer for pumping well |
| CN2916114Y (en) * | 2006-06-16 | 2007-06-27 | 青州市春晖科技发展有限公司 | Oil well head sealing device |
-
2006
- 2006-06-16 CN CNB2006100448437A patent/CN100419207C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2104288U (en) * | 1991-07-23 | 1992-05-13 | 山东省广饶县大王化工机械配件厂 | Light rod seal and centering unit for oil field oil-well portal |
| CN2197455Y (en) * | 1994-07-28 | 1995-05-17 | 李学福 | Adjustable sealing box for oil well top |
| CN2272047Y (en) * | 1995-03-06 | 1998-01-07 | 张文斗 | Pumping wellhead rod packing device |
| CN2401692Y (en) * | 1999-11-28 | 2000-10-18 | 王若峰 | Automatic sealed polish rod packing device |
| CN2732987Y (en) * | 2004-10-16 | 2005-10-12 | 高忠平 | Wellhead sealer for pumping well |
| CN2916114Y (en) * | 2006-06-16 | 2007-06-27 | 青州市春晖科技发展有限公司 | Oil well head sealing device |
Non-Patent Citations (2)
| Title |
|---|
| 抽油井光杆调偏防喷密封器的应用. 岳桂杰等.石油矿场机械，第35卷第1期. 2006 |
| 抽油井光杆调偏防喷密封器的应用. 岳桂杰等.石油矿场机械，第35卷第1期. 2006 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1865651A (en) | 2006-11-22 |
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| C14 | Grant of patent or utility model | ||
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| CB03 | Change of inventor or designer information |
Inventor after: Zhao Xuejun Inventor after: Xiu Minjun Inventor after: Jin Jianfang Inventor after: Zhao Haizhen Inventor after: Zhang Xiaohui Inventor before: Jin Jianfang Inventor before: Zhao Haizhen Inventor before: Zhang Xiaohui |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: JIN JIANFANG ZHAO HAIZHEN ZHANG XIAOHUI TO: ZHAO XUEJUN XIU MINJUN JIN JIANFANG ZHAO HAIZHEN ZHANG XIAOHUI |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20150616 |
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| EXPY | Termination of patent right or utility model |