CN104695888A - Automatic backflow wellhead sealer - Google Patents
Automatic backflow wellhead sealer Download PDFInfo
- Publication number
- CN104695888A CN104695888A CN201310657358.7A CN201310657358A CN104695888A CN 104695888 A CN104695888 A CN 104695888A CN 201310657358 A CN201310657358 A CN 201310657358A CN 104695888 A CN104695888 A CN 104695888A
- Authority
- CN
- China
- Prior art keywords
- automatic backflow
- bellows component
- sealing device
- oil well
- spring seat
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 238000012856 packing Methods 0.000 claims abstract description 36
- 239000003129 oil well Substances 0.000 claims abstract description 25
- 229920000297 Rayon Polymers 0.000 claims description 7
- 210000004907 gland Anatomy 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 241000191291 Abies alba Species 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to a sealing device for an oil well polish rod, in particular to an automatic backflow wellhead sealer. The automatic backflow wellhead sealer comprises a connecting body, an offset adjustment mechanism, a well sealing device, a main seal assembly and an automatic backflow device, which sequentially sleeve the oil well polish rod from bottom to top, wherein the connecting body is connected with a Christmas tree; the automatic backflow device comprises a spring assembly, a corrugated pipe assembly, an packing, and an upper packing box; a lower spring seat is connected with the main seal assembly; a compression spring and an upper spring seat are arranged above the lower spring seat in sequence; the upper spring seat is connected with the upper packing box; a limiting rubber block and the upper packing are arranged in the upper packing box; the corrugated pipe assembly is arranged on the outer sides of the upper spring seat and the lower spring seat; the lower end of the well is connected with the lower spring seat; the upper end of the corrugated pipe assembly is connected with the upper packing box through a connecting flange; a first backflow passage communicated with the inner cavity of the corrugated pipe assembly is arranged on the connecting flange; a first check valve is arranged in the first backflow passage; and a limiting device used for pressing the corrugated pipe assembly to be deformed is arranged on the oil well polish rod. The sealing device can effectively prolong the main seal regulating time and reduce the pollution of the leaked medium to the environment.
Description
Technical field
The present invention relates to the sealing device of oil well polished rod, specifically a kind of automatic backflow type wellhead sealing device.
Background technology
According to oilfield exploitation technological requirement, the existing pumping unit adopted mainly contains: reciprocating beam-pumping unit and screw-type oil pumping machine, although reciprocating beam-pumping unit is replaced by screw-type oil pumping machine at special operation condition, reciprocating beam-pumping unit remains main pumping unit.The polished rod seal of reciprocating beam-pumping unit, mainly uses rubber-like packing, and there will be micro-leakage after packing wearing and tearing in use procedure, adjust not in time, leaking medium will pollute well head surrounding environment.Reciprocating beam-pumping unit well mouth seal structure is various informative, the problem that ubiquity sealing life is short, is mainly reflected in: the easy eccentric wear of primary seal; Dry operational effect is poor; Seal moisture more than 90% medium weak effect; Medium sand content great Yi causes polished rod to wear and tear; To the well head bit shift compensation quantity not sufficient that natural cause causes; The medium outflow contaminated environment of primary seal leakage failure.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of automatic backflow type wellhead sealing device.This automatic backflow type wellhead sealing device effectively extends primary seal regulation time, reduces leaking medium to the pollution of environment.
To achieve these goals, the present invention is by the following technical solutions:
A kind of automatic backflow type wellhead sealing device, comprises and connects successively from bottom to up and be sheathed on the connector on oil well polished rod, adjusting deviation device, blowout preventer, main sealing assembly and automatic backflow apparatus, wherein connector is connected with production tree, and described automatic backflow apparatus comprises lower spring cup, Compress Spring, bellows component, upper spring seat, upper packing, stop collar, upper stuffing box body, spacing blob of viscose and adpting flange, wherein lower spring cup is connected with main sealing assembly, the top of described lower spring cup is provided with Compress Spring and upper spring seat successively, and the top of described upper spring seat is connected with upper stuffing box body by stop collar, is provided with in described upper stuffing box body, the spacing blob of viscose of lower setting and upper packing, described bellows component is sheathed on, the outside of lower spring cup, and lower end is connected with lower spring cup, the upper end of described bellows component is connected with upper stuffing box body by adpting flange, described adpting flange is provided with the first return flow line with bellows component inner space, be provided with the first one way valve in described first return flow line, described oil well polished rod is provided with the stopping means for oppressing bellows component distortion.
The outside of described bellows component is provided with studs, the through hole that the lower end of described studs is provided with through bellows component lower end is threaded with lower spring cup, and upper end is connected with stop nut with the through hole that adpting flange is provided with through the upper end of bellows component successively; When described oil well polished rod moves down, upper end and the adpting flange of the stopping means compressing bellows component on oil well polished rod move down along studs.
Described first return flow line comprises feeder and leak, the upper surface of described adpting flange is provided with feeder, the bottom of described feeder is provided with the leak with bellows component inner space, is provided with the first one way valve only allowing medium to reflux to bellows component inner chamber in described leak.
Described main sealing assembly comprises lower stuffing box body, lower packing, compensate gum cover and gland, stuffing box body is wherein descended to be sheathed on oil well polished rod, and be divided into upper cavity and lower chamber, described lower chamber is connected with described adjusting deviation device, described upper cavity is connected with automatic backflow apparatus by adapter sleeve, the second return flow line with bellows component inner space is provided with between described adapter sleeve and the outer wall of upper cavity, the bottom of described upper cavity is provided with the through hole be communicated with upper cavity with the second return flow line respectively, the second one way valve is provided with in described through hole, be provided with lower packing in described upper cavity from inside to outside successively and compensate gum cover, the upper end of described lower packing and compensation gum cover is provided with gland, blowout preventer is provided with in described lower chamber.Described blowout preventer is rectangular seal.
Described adjusting deviation device comprises lower guide ring, upper guide ring, positioning sleeve, location-plate, hold-down nut and adjusting ball head, wherein adjusting ball head to be sheathed on oil well polished rod and bulbous end is connected with described connector, the other end of described adjusting ball head is connected with main sealing assembly by hold-down nut, described lower guide ring and upper guide ring coordinate with the bulbous end of adjusting ball head from the bottom to top successively, the outside of described lower guide ring and upper guide ring is left and is provided with positioning sleeve with gap, the lower end of described positioning sleeve is connected with connector, and upper end is connected with location-plate.
The bulbous end end face of described adjusting ball head is arranged with two blind holes, described connector is connected with the blind hole on adjusting ball head by stop pin, and the diameter of described blind hole is greater than the diameter of stop pin.
The outside of described adjusting deviation device is provided with dust cover.Blowout preventer handle and primary seal handle is connected to outside described blowout preventer and main sealing assembly.The cylindrical of described upper packing is taper.
The present invention has the following advantages and beneficial effect:
1. the present invention is generally applicable to the oil well that polished rod offsets relative to well head and tilts.
2. the present invention is provided with automatic backflow apparatus, effectively extends primary seal regulation time, reduces environment pollution.
3. primary seal of the present invention is made up of aramid fiber packing and compensation rubber, good sealing effect, long service life.
4. the present invention is by increasing dielectric leakage cavity pressure, changes media flow direction, utilizes one way valve to control the unidirectional backflow of leaking medium, realizes dielectric leakage and the object that do not outflow.
5. the present invention improves stability and the exterior protection of adjusting deviation device, ensures primary seal not eccentric wear, increases the service life; Use high-wearing feature material, increase caoutchouc elasticity and compensate, extend once fastening service time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1 is connector, 2 is stop pin, 5 is lower guide ring, 7 is upper guide ring, 8 is dust cover, 9 is positioning sleeve, 10 is location-plate, 11 is hold-down nut, 12 is adjusting ball head, 14 times stuffing box bodies, 15 is rectangular seal, 16 is the second spring, 18 is the second steel ball, 19 is adapter sleeve, 20 is lower packing, 21 for compensating gum cover, 25 is gland, 26 is lower spring cup, 27 is Compress Spring, 28 is bellows component, 29 is upper spring seat, 30 is upper packing, 31 is stop collar, 32 is upper stuffing box body, 33 is spacing blob of viscose, 36 is the first spring, 37 is the first steel ball, 38 is adpting flange, 41 is stop nut, 42 is studs, 43 is primary seal handle, 44 is blowout preventer handle, 4, 23, 39, 40, 45 is hexagon socket cap head screw, 3, 6, 13, 17, 22, 24, 34, 35 is 0 shape sealing ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the present invention includes and connect successively from bottom to up and the connector 1 be sheathed on oil well polished rod, adjusting deviation device, blowout preventer, main sealing assembly and automatic backflow apparatus, wherein connector 1 is connected with production tree, described automatic backflow apparatus comprises lower spring cup 26, Compress Spring 27, bellows component 28, upper spring seat 29, upper packing 30, stop collar 31, upper stuffing box body 32, spacing blob of viscose 33 and adpting flange 38, described lower spring cup 26 is connected with main sealing assembly, the top of described lower spring cup 26 is provided with Compress Spring 27 and upper spring seat 29 successively, the top of described upper spring seat 29 is connected with upper stuffing box body 32 by stop collar 31, be provided with in described upper stuffing box body 32, the spacing blob of viscose 33 of lower setting and upper packing 30, described bellows component 28 is sheathed on, the outside of lower spring cup, and lower end is connected with lower spring cup 26, the upper end of described bellows component 28 is connected with upper stuffing box body 32 by adpting flange 38.The dielectric leakage chamber that described bellows component 28, upper packing 30 and main sealing assembly composition is closed.Described adpting flange 38 is provided with the first return flow line be communicated with dielectric leakage chamber.Described first return flow line comprises feeder and leak, the upper surface of described adpting flange 38 is provided with feeder, the bottom of described feeder is provided with the leak be communicated with dielectric leakage chamber, be provided with the first one way valve only allowing medium to reflux in dielectric leakage chamber in described leak, described first one way valve is made up of the first spring 36 and the first steel ball 37.Described oil well polished rod is provided with the stopping means be out of shape for oppressing bellows component 28.Compress Spring 27 is cylindroid helical-coil compression spring, and the cylindrical of upper packing 30 is taper.
The outside of described bellows component 28 is provided with studs 42, the through hole that the lower end of described studs 42 is provided with through bellows component 28 lower end is also threaded with lower spring cup 26, and upper end is connected with stop nut 41 with the through hole that adpting flange 38 is provided with through the upper end of bellows component 28 successively; When described oil well polished rod moves down, upper end and the adpting flange 38 of the stopping means compressing bellows component 28 on oil well polished rod move down along studs 42.Bellows component 28 is u-shaped bellow.
Described main sealing assembly comprises lower stuffing box body 14, lower packing 20, compensates gum cover 21 and gland 25, wherein descend stuffing box body 14 to be sheathed on oil well polished rod and be divided into upper cavity and lower chamber, described lower chamber is connected with described adjusting deviation device, and described upper cavity is threaded with lower spring cup 26 by adapter sleeve 19.The second return flow line be communicated with bellows component 28 inner chamber (dielectric leakage chamber) is provided with between described adapter sleeve 19 and the outer wall of upper cavity, the bottom of described upper cavity is provided with the through hole be communicated with upper cavity with the second return flow line respectively, the second return valve is provided with in described through hole, be provided with lower packing 20 in described upper cavity from inside to outside successively and compensate gum cover 21, the upper end of described lower packing 20 and compensation gum cover 21 is provided with gland 25, be provided with blowout preventer when changing primary seal in described lower chamber, described blowout preventer is rectangular seal 15.The outside of described adapter sleeve 19 and lower spring cup 26 is connected to blowout preventer handle 44 and primary seal handle 43.
Described adjusting deviation device is used for level and angle tuningout, comprise lower guide ring 5, upper guide ring 7, positioning sleeve 9, location-plate 10, hold-down nut 11 and adjusting ball head 12, wherein adjusting ball head 12 is sheathed on oil well polished rod, the bulbous end end face of described adjusting ball head 12 is arranged with two blind holes, described connector 1 is connected with the blind hole on adjusting ball head 12 by stop pin 2, and the diameter of described blind hole is greater than the diameter of stop pin 2.The other end of described adjusting ball head 12 and the lower chamber of lower stuffing box body 14 are tightly connected, and the lower chamber of described lower stuffing box body 14 is threaded by hold-down nut 11 with adjusting ball head 12.Described lower guide ring 5 and upper guide ring 7 are slidably matched with the bulbous end of adjusting ball head 12 from the bottom to top successively, the outside of described lower guide ring 5 and upper guide ring 7 is provided with positioning sleeve 9 with a gap, the lower end of described positioning sleeve 9 is connected with connector 1, and upper end is connected with location-plate 10.The outside of described adjusting deviation device is provided with dust cover 8.
Erection sequence of the present invention is: be first arranged on well head by blowout preventer, adjusting deviation device assembly, the lower packing 20 of main sealing assembly is installed and compensates gum cover 21, bellows component 28 is installed, cylindroid helical-coil compression spring and spring base are installed, install packing 30, adpting flange 38 and upper stuffing box body 32 are installed, location studs 42 is installed.
Operating principle of the present invention is:
Dielectric leakage chamber forms closed cavity by packing and u-shaped bellow, and when polished rod moves down, stopping means forces u-shaped bellow to compress, enclosure space reduces, dielectric leakage cavity pressure raises, and force the second backflow one-way valve opens, leaking medium is back to sealed medium side.When polished rod moves up, Compress Spring 27 and u-shaped bellow act on the synchronous return of polished rod simultaneously, and dielectric leakage cavity pressure reduces, the second backflow closed check valve, be located at the first backflow one-way valve opens on adpting flange 38, air enters in dielectric leakage chamber.Sucker rod makes a round trip, and leaking medium realizes a pumping, completes a medium back flow, so just ensures that medium back flow does not leak outside to dielectric leakage chamber.When packing_seal hydraulic performance decline, when can not ensure to reflux the chamber pressure required, packing should be adjusted in time.More during change owner packing box root, blowout preventer must be tightened.
When the present invention runs, along with the beat of oil well polished rod, adjusting deviation device can make package unit with oil well polished rod beat, main packing seal eccentric wear free.Without wearing and tearing backflow, mechanism realizes pumping with polished rod reciprocating motion.The present invention is in the raising stability of adjusting deviation device and the basis of primary seal abrasion resistance, and emphasis solves the reflux problem of leaking medium, extends the regulation time of primary seal, reduces the pollution of medium outflow to environment.
Claims (10)
1. an automatic backflow type wellhead sealing device, it is characterized in that: comprise and connecting successively from bottom to up and the connector (1) be sheathed on oil well polished rod, adjusting deviation device, blowout preventer, main sealing assembly and automatic backflow apparatus, wherein connector (1) is connected with production tree, described automatic backflow apparatus comprises lower spring cup (26), Compress Spring (27), bellows component (28), upper spring seat (29), upper packing (30), stop collar (31), upper stuffing box body (32), spacing blob of viscose (33) and adpting flange (38), wherein lower spring cup (26) is connected with main sealing assembly, the top of described lower spring cup (26) is provided with Compress Spring (27) and upper spring seat (29) successively, the top of described upper spring seat (29) is connected with upper stuffing box body (32) by stop collar (31), be provided with in described upper stuffing box body (32), the spacing blob of viscose (33) of lower setting and upper packing (30), described bellows component (28) is sheathed on, the outside of lower spring cup, and lower end is connected with lower spring cup (26), the upper end of described bellows component (28) is connected with upper stuffing box body (32) by adpting flange (38), described adpting flange (38) is provided with the first return flow line with bellows component (28) inner space, the first one way valve is provided with in described first return flow line, described oil well polished rod is provided with the stopping means be out of shape for oppressing bellows component (28).
2. by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: the outside of described bellows component (28) is provided with studs (42), the through hole that the lower end of described studs (42) is provided with through bellows component (28) lower end is threaded with lower spring cup (26), and upper end is connected with stop nut (41) with the through hole that adpting flange (38) is provided with through the upper end of bellows component (28) successively; When described oil well polished rod moves down, upper end and the adpting flange (38) of stopping means compressing bellows component (28) on oil well polished rod move down along studs (42).
3. by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: described first return flow line comprises feeder and leak, the upper surface of described adpting flange (38) is provided with feeder, the bottom of described feeder is provided with the leak with bellows component (28) inner space, is provided with the first one way valve only allowing medium to reflux to bellows component (28) inner chamber in described leak.
4. by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: described main sealing assembly comprises lower stuffing box body (14), lower packing (20), compensate gum cover (21) and gland (25), stuffing box body (14) is wherein descended to be sheathed on oil well polished rod, and be divided into upper cavity and lower chamber, described lower chamber is connected with described adjusting deviation device, described upper cavity is connected with automatic backflow apparatus by adapter sleeve (19), the second return flow line with bellows component (28) inner space is provided with between described adapter sleeve (19) and the outer wall of upper cavity, the bottom of described upper cavity is provided with the through hole be communicated with upper cavity with the second return flow line respectively, the second one way valve is provided with in described through hole, be provided with lower packing (20) in described upper cavity from inside to outside successively and compensate gum cover (21), the upper end of described lower packing (20) and compensation gum cover (21) is provided with gland (25), blowout preventer is provided with in described lower chamber.
5., by automatic backflow type wellhead sealing device according to claim 4, it is characterized in that: described blowout preventer is rectangular seal (15).
6. by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: described adjusting deviation device comprises lower guide ring (5), upper guide ring (7), positioning sleeve (9), location-plate (10), hold-down nut (11) and adjusting ball head (12), wherein adjusting ball head (12) is sheathed on oil well polished rod, and bulbous end is connected with described connector (1), the other end of described adjusting ball head (12) is connected with main sealing assembly by hold-down nut (11), described lower guide ring (5) and upper guide ring (7) coordinate with the bulbous end of adjusting ball head (12) from the bottom to top successively, the outside of described lower guide ring (5) and upper guide ring (7) is left and is provided with positioning sleeve (9) with gap, the lower end of described positioning sleeve (9) is connected with connector (1), upper end is connected with location-plate (10).
7. by automatic backflow type wellhead sealing device according to claim 6, it is characterized in that: the bulbous end end face of described adjusting ball head (12) is arranged with two blind holes, described connector (1) is connected with the blind hole on adjusting ball head (12) by stop pin (2), and the diameter of described blind hole is greater than the diameter of stop pin (2).
8. the automatic backflow type wellhead sealing device described in claim 1 or 6, is characterized in that: the outside of described adjusting deviation device is provided with dust cover (8).
9., by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: outside described blowout preventer and main sealing assembly, be connected to blowout preventer handle (44) and primary seal handle (43).
10., by automatic backflow type wellhead sealing device according to claim 1, it is characterized in that: the cylindrical of described upper packing (30) is taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657358.7A CN104695888B (en) | 2013-12-04 | 2013-12-04 | Automatic backflow wellhead sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657358.7A CN104695888B (en) | 2013-12-04 | 2013-12-04 | Automatic backflow wellhead sealer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104695888A true CN104695888A (en) | 2015-06-10 |
| CN104695888B CN104695888B (en) | 2017-02-08 |
Family
ID=53343391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310657358.7A Active CN104695888B (en) | 2013-12-04 | 2013-12-04 | Automatic backflow wellhead sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104695888B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971544A (en) * | 2016-07-14 | 2016-09-28 | 哈尔滨理工大学 | Follow-up type automatic compensation polished rod sealing device |
| CN106014321A (en) * | 2016-08-05 | 2016-10-12 | 苑海阔 | Polished rod sealing device of retractable rod pumped well |
| CN108868685A (en) * | 2018-06-05 | 2018-11-23 | 大庆润欣石化科技有限公司 | The vertical well-sealing device of tuningout energy conservation |
| CN110230481A (en) * | 2019-06-28 | 2019-09-13 | 中国地质科学院勘探技术研究所 | A kind of geological drilling port seal |
| CN110513485A (en) * | 2018-05-21 | 2019-11-29 | 天华化工机械及自动化研究设计院有限公司 | A kind of bellows sealing structure of revolving drum of multipurpose continuous drying equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348005A (en) * | 1971-10-01 | 1982-09-07 | British Nuclear Fuels Limited | Valves for fluids |
| CN201080800Y (en) * | 2007-10-20 | 2008-07-02 | 冯杨 | Screw seal device for oil pumping unit |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201778723U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Deviation-regulating packing box moving with polish rod |
| CN202451100U (en) * | 2012-02-24 | 2012-09-26 | 丹东波纹管密封有限公司 | Well head sealer |
| CN203626692U (en) * | 2013-12-04 | 2014-06-04 | 丹东波纹管密封有限公司 | Automatic backflow type well head sealing device |
-
2013
- 2013-12-04 CN CN201310657358.7A patent/CN104695888B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348005A (en) * | 1971-10-01 | 1982-09-07 | British Nuclear Fuels Limited | Valves for fluids |
| CN201080800Y (en) * | 2007-10-20 | 2008-07-02 | 冯杨 | Screw seal device for oil pumping unit |
| CN101644148A (en) * | 2008-08-06 | 2010-02-10 | 大庆油田有限责任公司 | Non-smooth flexible rope corrugated pipe wellhead sealing device |
| CN201778723U (en) * | 2010-08-20 | 2011-03-30 | 中国石油天然气股份有限公司 | Deviation-regulating packing box moving with polish rod |
| CN202451100U (en) * | 2012-02-24 | 2012-09-26 | 丹东波纹管密封有限公司 | Well head sealer |
| CN203626692U (en) * | 2013-12-04 | 2014-06-04 | 丹东波纹管密封有限公司 | Automatic backflow type well head sealing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971544A (en) * | 2016-07-14 | 2016-09-28 | 哈尔滨理工大学 | Follow-up type automatic compensation polished rod sealing device |
| CN106014321A (en) * | 2016-08-05 | 2016-10-12 | 苑海阔 | Polished rod sealing device of retractable rod pumped well |
| CN106014321B (en) * | 2016-08-05 | 2019-03-01 | 苑海阔 | Telescopic polished rod sealing device for rod-pumped well |
| CN110513485A (en) * | 2018-05-21 | 2019-11-29 | 天华化工机械及自动化研究设计院有限公司 | A kind of bellows sealing structure of revolving drum of multipurpose continuous drying equipment |
| CN108868685A (en) * | 2018-06-05 | 2018-11-23 | 大庆润欣石化科技有限公司 | The vertical well-sealing device of tuningout energy conservation |
| CN110230481A (en) * | 2019-06-28 | 2019-09-13 | 中国地质科学院勘探技术研究所 | A kind of geological drilling port seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104695888B (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104695888A (en) | Automatic backflow wellhead sealer | |
| CN105089538B (en) | A kind of sealing structure for having bar production wellhead polished rod | |
| CN2937459Y (en) | Double-offset polish rod sealer for pumping well | |
| CN203847883U (en) | Maintenance-free self-sealing sleeve compensator | |
| CN202391375U (en) | Self-pressurizing self-lubricating offset-regulating sealing device for polish rod | |
| CN201915886U (en) | Automatic regulating sealer for polish rod of oil well | |
| CN203626692U (en) | Automatic backflow type well head sealing device | |
| CN2916113Y (en) | Polish rod sealing device for oil pumping well head | |
| CN204691721U (en) | A kind of hermetically-sealed construction having bar production wellhead polished rod | |
| WO2020113745A1 (en) | Wellhead polished rod sealing device for pumping unit | |
| CN209339895U (en) | Adjustable offset pumping unit rod sealing device | |
| CN106917597A (en) | Oil-field oil pumper packing box | |
| CN114673467B (en) | Pneumatic constant pressure multistage sealing device for oil pumping machine well head | |
| CN215595533U (en) | Pumping unit well head antiseep sealing device | |
| CN208486858U (en) | High pressure is flexible coupling polished rod sealer | |
| CN202000946U (en) | Novel wellhead double-seal box | |
| CN101956539A (en) | Follow-up centering sealing device of pumping well head | |
| CN205445533U (en) | Long -term sealing device of oil recovery well head | |
| CN207229051U (en) | Well head is from centering offset blow-out preventing polished rod sealer | |
| CN203463062U (en) | Hydraulic universal sealer | |
| CN204754851U (en) | Wear -resisting packing box of tuningout | |
| CN207348816U (en) | Well head Universal sealed device | |
| CN206972184U (en) | A kind of sealing structure of core plugging notifying mechanism of rope core drilling | |
| CN208486857U (en) | Be flexible coupling wellhead sealing device | |
| CN206830509U (en) | Novel horizontal pump pump shaft seal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |