CN203822235U - Spherical deviation-adjusting sealer for polished rod - Google Patents
Spherical deviation-adjusting sealer for polished rod Download PDFInfo
- Publication number
- CN203822235U CN203822235U CN201420154319.5U CN201420154319U CN203822235U CN 203822235 U CN203822235 U CN 203822235U CN 201420154319 U CN201420154319 U CN 201420154319U CN 203822235 U CN203822235 U CN 203822235U
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- China
- Prior art keywords
- tuningout
- polished rod
- spherical
- head
- sealing device
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- Expired - Fee Related
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Abstract
The utility model provides a spherical deviation-adjusting sealer for a polished rod. The sealer is used for sealing and deviation adjustment of the polished rod and comprises a double-sealing element arranged outside the polished rod, wherein the double-sealing element is divided into an upper part and a lower part, the upper part is a packing box, packing capable of realizing dynamic sealing is arranged between the packing box and the polished rod, the lower part is a deviation-adjusting head, and the inner side surface of the deviation-adjusting head is in clearance seal contact with the polished rod to realize the sealing of the lower part of the double-sealing element. According to the sealer, the deviation adjusting capacity and the sealing reliability can be improved.
Description
Technical field
The utility model relates to a kind of deviation-adjusting polish rod sealing device, relates in particular to a kind of spherical deviation-adjusting polish rod sealing device.
Background technology
Carbonate rock fractured cave type heavy crude reservoir adopts thin oil blending visbreaking and water filling to produce for oily mode.After note thin oil, water filling, have the high feature of well head pressure, conventional polished rod sealer bearing capacity is low, complicated operation, is difficult to meet water filling and takes out well well control safety requirements for oil machine.Therefore machine is taken out well well head and is sealed the well head that is 25MPa by original pressure-bearing and coordinates polished rod sealer to change well head cooperation double ram type preventer and the polished rod sealer structure that pressure-bearing is 35MPa into, and this structure exists following three problems in applying at the scene:
1) be subject to pressure-bearing 35MPa well head, double ram type preventer and polished rod sealer effect of altitude, after completion, machine is taken out well well head excessive height, cause oil pumping unit base height increase (being increased to 1.2-1.6m by 0.6-0.8m), low voltage experiment difficulty and risk increasing, part well even cannot realize long stroke, low jig frequency production, bring very big risk to production and safety management;
2) existing have movable sealing (being packing_seal), static seal (being secondary seal) and tuningout ability with polished rod sealer, and has repetition in double ram type preventer function, and individual well material input cost increases;
3) be subject to well head height and existing polished rod sealer structure influence, existing polished rod sealer tuningout (being about 1mm left and right) limited in one's ability, when polished rod moves while there is eccentricity issues under larger cycling alternating load, sealer wearing and tearing polished rod, further cause polished rod wearing and tearing sealed packing, thereby cause wellhead sealing inefficacy, leakage of oil, and the impaired rear easy generation phenomenon of rupture of polished rod.
According to statistics, two factories of only recovering the oil, just because polished rod eccentric wear causes changing polished rod 45 wells times/year, change polished rod sealer 30 wells times/year, and on average changing the packing cycle is 20 days, causes 2497 tons/year of production losses, and 1125 tons/year of waste thin oils, increase by 9,740,000 yuan/year of costs.
Summary of the invention
In order to overcome the above problems, the utility model provides a kind of spherical deviation-adjusting polish rod sealing device, and it can improve the reliability of tuningout ability and sealing.
To achieve these goals, the utility model provides a kind of spherical deviation-adjusting polish rod sealing device, sealing and tuningout for polished rod, this spherical deviation-adjusting polish rod sealing device comprises the double seal being arranged on outside polished rod, and wherein this double seal is divided into upper and lower two parts, and its top is divided into packing box, between packing box and polished rod, fill the packing that can realize movable sealing, bottom is divided into tuningout head, and this tuningout head medial surface adopts clearance seal to contact with polished rod, to realize the lower part sealing of double seal.
Preferably, the lateral surface of tuningout head is spherical.
Preferably, inner side, the top of double seal is provided with gland, and the top arranged outside of double seal has pressure cap, and the upper inner face of pressure cap contacts with polished rod, and the top of pressure cap is laminated on the top of gland.
Preferably, the corner angle that pressure cap and gland contact with polished rod are circular arc chamfering.
Preferably, the bottom of tuningout head arranges tuningout base, make within tuningout head is located tuningout base, outer setting at tuningout head has tuningout pressure cap, the upper end of this tuningout pressure cap is near spherical tuningout head, lower end is near tuningout base, and the lateral surface of tuningout head and tuningout base and tuningout pressure-pad adopt double containment rubber sealing.
Preferably, the gap between pressure cap and polished rod is 3-5mm.
Preferably, the gap between gland and polished rod is 3-5mm.
Preferably, the deflection-regulating range of spherical tuningout head is at 2-4mm.
The reliability that spherical deviation-adjusting polish rod sealing device of the present utility model has improved tuningout ability and strengthened sealing, is embodied in the following aspects:
1) corner angle that pressure cap and gland contact with polished rod change circular arc chamfering into by right angle, reduce the wearing and tearing of corner angle to polished rod, extend polished rod and packing life-span, reduce and change packing and polished rod workload;
2) this spherical deviation-adjusting polish rod sealing device does not arrange secondary seal (static seal), reduces well head height and reduces expenses;
3) increase the gap of pressure-pad, gland and polished rod, eccentric wear not when polished rod and well head are slightly misaligned;
4) by spring tuningout structure, change spherical tuningout structure into, double containment, is realized by two sealing rings, and tuningout ability promotes greatly.
Accompanying drawing explanation
Fig. 1 is the sectional view of spherical deviation-adjusting polish rod sealing device in the utility model.
The specific embodiment
Below, by exemplary embodiment, the utility model is specifically described.Yet should be appreciated that element, structure and the feature in an embodiment also can be attached in other embodiments valuably in the situation that further not narrating.
As shown in Figure 1, spherical deviation-adjusting polish rod sealing device of the present utility model is for sealing and the tuningout of polished rod, it comprises the double seal 3 being arranged on outside polished rod, wherein this double seal 3 is divided into upper and lower two parts, its top is divided into packing box 31, between packing box 31 and polished rod, fill packing (not shown), to realize the movable sealing of polished rod; Bottom is divided into tuningout head 32, and these tuningout head 32 medial surfaces adopt clearance seal to contact with polished rod, realize the sealing of part under double seal; Lateral surface is the 360o tuningout that spherical, spherical tuningout head can also be realized polished rod, has greatly promoted tuningout ability.Spherical deviation-adjusting polish rod sealing device of the present utility model only arranges movable sealing, and secondary seal (static seal) is not set, and reduces well head height and reduces expenses.
The inner side, top of double seal 3 is provided with gland 2, and the top arranged outside of double seal 3 has pressure cap 1, and the upper inner face of pressure cap 1 contacts with polished rod, and the top of pressure cap 1 is laminated on the top of gland 2.Preferably, the corner angle that pressure cap 1 and gland 2 contact with polished rod are circular arc chamfering, can reduce like this abrasion of corner angle to polished rod, extend the polished rod life-span, reduce and change polished rod workload.
For fixing spherical tuningout head 32, in the bottom of tuningout head 32, tuningout base 5 is set, make within tuningout head 32 is located tuningout base 5, outer setting at tuningout head 32 has tuningout pressure cap 4, the upper end of this tuningout pressure cap 4 is near spherical tuningout head 32, lower end is near tuningout base 5, and the lateral surface of tuningout head 32 and tuningout base 5 and tuningout pressure-pad 4 adopt double containment rubber sealing, to realize spherical tuningout head 32 at the interior tuningout of realizing of tuningout base 5.
Further, while slightly misaligning for polished rod and well head are existed, eccentric wear does not occur, the gap between pressure cap 1 and polished rod is preferably 3-5mm, and the gap between gland 2 and polished rod is preferably 3-5mm, and the deflection-regulating range of spherical tuningout head is at 2-4mm.For the beneficial effect of spherical deviation-adjusting polish rod sealing device in the utility model is described, we are by drawing following effect after concrete practicality in practice: using 98 polished rod sealers to use year, be example, the replacing packing cycle was promoted to 90 days by 20 days, change the polished rod frequency and be reduced to 10 wells times/year by 45 wells times/year, change polished rod sealer 30 wells times/year and be down to 5 wells times/year, stop crude oil evaporating, emitting, dripping or leaking of liquid or gas phenomenon, extended service life of equipment, reduce line service amount, improve oil well production timeliness, reduced production loss and thin oil waste.Within 1 year, to change 45, polished rod, 30 of polished rod sealers, 14600 calculating of packing, 2497 tons of lost units, 1125 tons of thin oil losses, increase by 9,740,000 yuan of calculating of cost, as do not improved, newly turn inspection rod pumped well and use 98 mouthfuls of polished rod sealers, cause 878 tons of production losses, 405 tons of thin oil losses, increase by 3,410,000 yuan of costs for oil production.
Be appreciated that the utility model is described by some embodiment, those skilled in the art know, in the situation that not departing from spirit and scope of the present utility model, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present utility model, can modify to adapt to concrete situation and material and can not depart from spirit and scope of the present utility model these features and embodiment.Therefore, the utility model is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs in the scope that the utility model protects.
Claims (8)
1. a spherical deviation-adjusting polish rod sealing device, sealing and tuningout for polished rod, it is characterized in that, this spherical deviation-adjusting polish rod sealing device comprises the double seal (3) being arranged on outside polished rod, wherein this double seal (3) is divided into upper and lower two parts, its top is divided into packing box (31), between packing box (31) and polished rod, fill the packing that can realize movable sealing, bottom is divided into tuningout head (32), this tuningout head (32) medial surface adopts clearance seal to contact with polished rod, to realize the lower part sealing of double seal (3).
2. spherical deviation-adjusting polish rod sealing device according to claim 1, is characterized in that, the lateral surface of tuningout head (32) is spherical.
3. spherical deviation-adjusting polish rod sealing device according to claim 1 and 2, it is characterized in that, the inner side, top of double seal (3) is provided with gland (2), the top arranged outside of double seal (3) has pressure cap (1), the upper inner face of pressure cap (1) contacts with polished rod, and the top of pressure cap (1) is laminated on the top of gland (2).
4. spherical deviation-adjusting polish rod sealing device according to claim 3, is characterized in that, the corner angle that pressure cap (1) and gland (2) contact with polished rod are circular arc chamfering.
5. spherical deviation-adjusting polish rod sealing device according to claim 4, it is characterized in that, the bottom of tuningout head (32) arranges tuningout base (5), make within tuningout head (32) is located tuningout base (5), outer setting at tuningout head (32) has tuningout pressure cap (4), the upper end of this tuningout pressure cap (4) is near spherical tuningout head (32), lower end is near tuningout base (5), and the lateral surface of tuningout head (32) and tuningout base (5) and tuningout pressure-pad (4) adopt double containment rubber sealing.
6. spherical deviation-adjusting polish rod sealing device according to claim 5, is characterized in that, the gap between pressure cap (1) and polished rod is 3-5mm.
7. according to the spherical deviation-adjusting polish rod sealing device described in claim 5 or 6, it is characterized in that, the gap between gland (2) and polished rod is 3-5mm.
8. spherical deviation-adjusting polish rod sealing device according to claim 7, is characterized in that, the deflection-regulating range of spherical tuningout head is at 2-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154319.5U CN203822235U (en) | 2014-04-01 | 2014-04-01 | Spherical deviation-adjusting sealer for polished rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154319.5U CN203822235U (en) | 2014-04-01 | 2014-04-01 | Spherical deviation-adjusting sealer for polished rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822235U true CN203822235U (en) | 2014-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420154319.5U Expired - Fee Related CN203822235U (en) | 2014-04-01 | 2014-04-01 | Spherical deviation-adjusting sealer for polished rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523714A (en) * | 2020-12-04 | 2021-03-19 | 牡丹江力能石油工具有限公司 | High-pressure wear-resistant anti-corrosion automatic deviation-adjusting wellhead sealing device |
-
2014
- 2014-04-01 CN CN201420154319.5U patent/CN203822235U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523714A (en) * | 2020-12-04 | 2021-03-19 | 牡丹江力能石油工具有限公司 | High-pressure wear-resistant anti-corrosion automatic deviation-adjusting wellhead sealing device |
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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 |
Granted publication date: 20140910 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |