CN109736739A - A kind of intelligence well mouth sealing device - Google Patents
A kind of intelligence well mouth sealing device Download PDFInfo
- Publication number
- CN109736739A CN109736739A CN201910070310.3A CN201910070310A CN109736739A CN 109736739 A CN109736739 A CN 109736739A CN 201910070310 A CN201910070310 A CN 201910070310A CN 109736739 A CN109736739 A CN 109736739A
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- packing
- ring
- sliding slot
- floating
- shell
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- 238000007789 sealing Methods 0.000 title claims abstract description 76
- 238000012856 packing Methods 0.000 claims abstract description 66
- 238000007667 floating Methods 0.000 claims abstract description 44
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 6
- 239000010779 crude oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009837 dry grinding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Abstract
The invention discloses a kind of intelligent well mouth sealing device, including floating double seal and it is a set of can be with pressure compensated hydraulic energy-accumulating boosting system；Floating double seal includes shell and ring-shaped sealing sleeve；Housing tip has 360 degree of sliding slots, ring-shaped sealing sleeve is fixedly installed with by the first support ring and the second support ring in the housing cavity body, ring-shaped sealing sleeve is made of straight tube connector sleeve and at least one annular high voltage seal chamber, ring-shaped sealing sleeve top straight tube connection set upper side be equipped with can in housing tip sliding slot horizontal float floating packing box, packing is installed in floating packing box, spring bearer plate and packing locking cap are installed on packing, oil-extractor polish-rod is mounted on inside ring-shaped sealing sleeve, upper end sequentially passes through floating packing box, packing, spring bearer plate and packing locking cap, lower part of the housing is connected with the hydraulic energy-accumulating boosting system being connected to high-pressure sealing chamber.Which solves the eccentric wear problems that 90% or more oil well generates, and extend pumping unit service life.
Description
Technical field
The present invention relates to a kind of oil pumping in oil fields well head devices, and in particular to a kind of intelligence well mouth sealing device.
Background technique
Beam pumping unit is a kind of pumping unit that middle stripper well largely uses in the world at present.It is to utilize oil pumping
Machine drives the reciprocating motion of the pistons of sucker rod connection in tubing string, and pump barrel and shaft bottom crude oil are lifted to ground.Due to sucker rod with
There are relative motions between oil pipe prevents crude oil from revealing so being equipped with packing box on the well head of such equipment.Conventional disc at present
There are four major problems for the use of root box: 1, it can not adaptively adjust because assembly/oil-pump base inclination/polished rod is because of etching mechanism
Eccentric wear problem caused by the reasons such as damage.Existing tuningout measure is both needed to manual intervention.2, it is infused with oily stable yields measure is increased
Even a large amount of implementations for using single-well injection-production technique of hydraulic art, well head pressure is increasing, and the risk of blowout is also following.
Blowout prevention facility is installed additional to special well head for this to be also necessary.3, common packing box needs pressure release, both shut down when replacing packing
Time is long, influences yield, and pollute environment, causes environmental issue.4, current wellhead packing sealing device, there are no a kind of warps
The applicable intelligent equipment for carrying out well head closing automatically according to pressure and leak case of Ji.Either hydraulic system is complicated, makes
Valence is high, and the long reaction of pipeline is slow.So develop a kind of completely new economic intelligent well mouth sealing device be very urgently with it is necessary.
Summary of the invention
In order to solve the above technical problems, The present invention provides a kind of intelligent well mouth sealing devices, solve 90% or more
The eccentric wear problem that generates of oil well, extend pumping unit service life, reduce downtime, reduce installation maintenance cost.
The present invention is to be achieved through the following technical solutions:
A kind of intelligence well mouth sealing device, including floating double seal and a set of can be increased with pressure compensated hydraulic energy-accumulating
Force system；Floating double seal includes shell and ring-shaped sealing sleeve；Housing tip has 360 degree of sliding slots, in the shell
Ring-shaped sealing sleeve is fixedly installed with by the first support ring and the second support ring in cavity, the ring-shaped sealing sleeve is connected by straight tube
Set and at least one annular high voltage seal chamber composition, ring-shaped sealing sleeve top straight tube connection set upper side is equipped with can be on shell top
The floating packing box of horizontal float in sliding slot is held, packing is installed in floating packing box, spring bearer plate and disk are installed on packing
Root locking cap, oil-extractor polish-rod are mounted on inside ring-shaped sealing sleeve, and upper end sequentially passes through floating packing box, packing, spring bearer plate
With packing locking cap, lower part of the housing is connected with the hydraulic energy-accumulating boosting system being connected to high-pressure sealing chamber.
The hydraulic energy-accumulating boosting system includes triple-valve body and liquid booster jar；The triple-valve body is mounted on shell
Body lower part, and be connected to high-pressure sealing chamber, digital display manometer is provided on triple-valve body, triple-valve body front end is provided with single
To the inlet into make-up valve, top is provided with liquid booster jar, and liquid booster jar upper end is provided with bracket, in liquid booster jar
It is provided with pressurization plunger, pressurization plunger upper end is provided with precompressed counterbalance spring, and precompressed counterbalance spring upper end is provided with pressurization screw rod,
Driving handwheel or motor and controller, the fixed pressurization plunger of bracket, precompressed counterbalance spring, pressurization spiral shell are provided on pressurization screw rod
Bar, driving handwheel or motor and controller.
The controller include driving motor motor drive module, pressure and temperature judgment module and wireless remote transmission it is distant
Control module.
The pressure and temperature judgment module includes liquid booster jar pressure acquisition module, well head pipeline pressure acquisition mould
Block and well head local temperature acquisition module.
The shell lower end is connected with thread or clip, is connect by thread or clip with well head.
The shape of the shell is cylinder.
The ring-shaped sealing sleeve is made of flexible material.
The flexible material is polyurethane material.
The sliding slot includes sliding slot bottom plate and the sliding slot pressing plate for the floating of floating packing box；The method of the housing tip
It is provided with sliding slot bottom plate on orchid, sliding slot pressing plate is provided on sliding slot bottom plate, housing tip, sliding slot bottom plate and sliding slot pressing plate pass through spiral shell
Bolt is fixed.
The circular flange slider disc for floating in sliding slot is provided on the floating packing box.
Compared with prior art, the invention has the following beneficial technical effects:
Intelligence well mouth sealing device provided by the invention, is combined into one intelligent control and floating double sealing structure.It solves
The problem of unattended automatic control prevents crude oil leakage and packing_seal eccentric wear and quick-replaceable.Guarantee the safety of oil well
Production.Without manual adjustment, voluntarily comprehensive large scale solves the problems, such as eccentric wear.The draining pollution for taking leave of replacement packing, reduces worker
Labor intensity extends pumping unit service life, reduces downtime, reduces installation maintenance cost.By liquid booster jar, increase
Hydraulic plunger, the effect of precompressed counterbalance spring can apply different prestressing force to annular compression seal chamber, play auxiliary righting,
Wear-compensating, the effect of high-tension blowout-prevention sealing.
Intelligence well mouth sealing device provided by the invention automatically adjusts the intracavitary pressure of ring packing according to well head pressure
Power.When well head pressure reaches setting alarm pressure, automatic alarm is simultaneously sealed with maximum pressure, realizes intelligence.It is double
Resealing combination solves the problems, such as the eccentric wear of 90% or more oil well generation.Solve leakage problem when replacement packing.Utilize ring
The middle cavity of the straight tube connector sleeve of shape sealing shroud is grease-added to solve the problems, such as dry grinding.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of intelligent well mouth sealing device provided by the invention；
Fig. 2 is the structural schematic diagram of sliding slot in intelligent well mouth sealing device provided by the invention；
Fig. 3 is the structural schematic diagram of controller in intelligent well mouth sealing device provided by the invention.
Wherein, in Fig. 1: 1, spring bearer plate；2, packing locking cap；3, packing；4, floating packing box；5, the first support ring；
6, shell；7, the second support ring；8, thread or clip；9, triple-valve body；10, digital display manometer；11, it unidirectionally nourishes liquid
Valve；12, liquid booster jar；13, pressurization plunger；14, precompressed counterbalance spring；15, bracket；16, pressurize screw rod；17, handwheel is driven
Or motor；18, controller；19, ring-shaped sealing sleeve；20, oil-extractor polish-rod；21 be annular high voltage seal chamber；22 be sliding slot；23,
Sliding slot pressing plate；24, sliding slot bottom plate.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1 to Fig. 3, a kind of intelligence well mouth sealing device, including floating double seal and a set of can be mended with pressure
The hydraulic energy-accumulating boosting system repaid；Floating double seal includes shell 6 and ring-shaped sealing sleeve 19；6 top of shell has 360 degree
Sliding slot 22 is fixedly installed with ring-shaped sealing sleeve 19 by the first support ring 5 and the second support ring 7 in 6 inner chamber body of shell,
The ring-shaped sealing sleeve is made of straight tube connector sleeve and at least one annular high voltage seal chamber 21,19 top straight tube of ring-shaped sealing sleeve
Connection set upper side be equipped with can in 6 top sliding slot of shell horizontal float floating packing box 4, install in floating packing box 4
There is packing 3, spring bearer plate 1 and packing locking cap 2 are installed on packing 3, oil-extractor polish-rod 20 is mounted in ring-shaped sealing sleeve 19
Portion, upper end sequentially pass through floating packing box 4, packing 3, spring bearer plate 1 and packing locking cap 2, and 6 lower part of shell is connected with and high pressure
The hydraulic energy-accumulating boosting system of seal chamber connection, 6 lower end of shell is connected with thread or clip 8, passes through connecting filament
Button or clip 8 are connect with well head.Wherein, the shape 6 of shell is cylinder.
The hydraulic energy-accumulating boosting system includes triple-valve body 9 and liquid booster jar 12；The triple-valve body 9 is installed
It in 6 lower part of shell, and is connected to high-pressure sealing chamber, digital display manometer 10 is provided on triple-valve body 9,9 front end of triple-valve body is set
It is equipped with unidirectionally into the inlet of make-up valve 11, top is provided with liquid booster jar 12, and 12 upper end of liquid booster jar is provided with
Bracket 15 is provided with pressurization plunger 13 in liquid booster jar 12, and 13 upper end of pressurization plunger is provided with precompressed counterbalance spring 14, precompressed
14 upper end of counterbalance spring is provided with pressurization screw rod 16, is provided with driving handwheel or motor 17 and controller 18 on the screw rod 16 that pressurizes,
Bracket 15 fixes pressurization plunger 13, precompressed counterbalance spring 14, pressurization screw rod 16, driving handwheel or motor 17 and controller 18.Its
In, the controller 18 include drive or stop motor motor driven or stopping modular, pressure and temperature judgment module and
Wireless remote transmission remote control module.The pressure and temperature judgment module includes liquid booster jar pressure acquisition module, well head pipeline
Pressure acquisition module and well head local temperature acquisition module.
The ring-shaped sealing sleeve 19 is made of flexible material.Wherein, the flexible material is polyurethane material.
The sliding slot includes sliding slot bottom plate 24 and the sliding slot pressing plate 23 for the floating of floating packing box 4；The shell 6 pushes up
It is provided with sliding slot bottom plate 24 on the flange at end, sliding slot pressing plate 23,6 top of shell, sliding slot bottom plate 24 are provided on sliding slot bottom plate 24
It is bolted with sliding slot pressing plate 23.
The circular flange slider disc for floating in sliding slot is provided on the floating packing box 4.
Specifically, the floating double seal is made of two sets of sealings: 1 is to have the ring-shaped sealing sleeve for bearing high pressure, 2
It is the floating packing box connected by ring-shaped sealing sleeve upper connecting sleeve and spring bearer plate and packing locking cap, supports 1 and 2 liang of set
The shell and two support rings with 360 degree of sliding slots of sealing.The ring-shaped sealing sleeve is by least one annular seal space and directly
Cylinder connector sleeve.
The floating packing box has a circular flange slider disc, can be slided in sliding slot with 360 degree of directions.Floating packing
The lower part of box is connected with the top straight tube connector sleeve end of ring-shaped sealing sleeve.The inside of floating packing box fills conventional packing, and top has
Packing locking cap and spring bearer plate.
Pressurization plunger is linked together by precompressed counterbalance spring and pressurization screw rod, and pressurization screw rod drives pressurization plunger in liquid
It moves up and down in body booster jar.
The liquid booster jar is connected by triple-valve body with shell.Triple-valve body is equipped with digital display manometer and feed liquor
Mouthful, inlet is equipped with the unidirectional into make-up valve of leakproof.
It should be noted that floating packing box 4 can slide in the sliding slot on shell 6 when well head eccentric wear.Floating packing box
The upper straight tube connector sleeve of the ring-shaped sealing sleeve 19 of lower end can be servo-actuated, while by unidirectionally into make-up valve 11 in annular high voltage seal chamber
Be pre-filled with setting pressure liquid, hydraulic strength annular extrusion annular high voltage seal chamber, to oil-extractor polish-rod 20 apply
One 360 degree of pre-sealed power forms first of flexible sealing to well head and oil-extractor polish-rod.With floating packing above
Box forms two seals, prevents well head from revealing.
Packing inside floating packing box can be convenient replacement, when replacement, passes through pressurization screw rod 16, pushes pressurization plunger
13, so that the fluid pressure increase that high pressure sealing is intracavitary, sealing force enhancing tightly seal up oil-extractor polish-rod, accomplish not pollute
Environment, the task of clean completion replacement packing.
When two seals are worn, spring bearer plate 1 and precompressed counterbalance spring 14 can provide certain compensation pressure.When
Abrasion compare effectively cause well head leakage when, on the one hand can pass through first of ring of 17 pressurization lower part of handmade rotary handwheel
Shape sealing, processing leakage.Controller 18 is connected to preset pressure signal or the spy for the digital display manometer being mounted on well head pipeline
Temperature signal or teleinstruction signal of well logging mouth leakage etc., are automatically stopped pumping unit, automatically turn on motor, drive pressurization spiral shell
Bar implements pressurization, solves the problems, such as leakage blowout.Ring-shaped sealing sleeve 19 is the flexible materials such as polyurethane.
Intelligence well mouth sealing device provided by the invention, is combined into one intelligent control and floating double sealing structure.Pass through
Setting hydraulic energy-accumulating boosting system passes through hydraulic energy-accumulating boosting system when pressure is not high in the high-pressure sealing chamber communicated therewith
It is pressurized into high-pressure sealing chamber, so that ring-shaped sealing sleeve holds sucker rod tightly, to prevent the leakage of crude oil, while also real
Packing box is showed when replacing packing, not needing pressure release can be replaced packing, guarantee the safety in production of oil well.
Simultaneously as there is one on floating packing box, be inserted in sliding slot can be in 360 degree of directions of horizontal plane with well head
The circular flange slider disc of offset and floating, so no matter how well head deviates, circular flange slider disc can be with movement, no
It needs to manually adjust, it is achieved that voluntarily comprehensive large scale solves the problems, such as eccentric wear without manual adjustment.
By liquid booster jar, pressurization plunger, the effect of precompressed counterbalance spring can apply not annular high voltage seal chamber
Same prestressing force, plays auxiliary righting, the effect of wear-compensating.Simultaneously because the pressure of annular high voltage seal chamber can control,
When increasing the pressure to annular high voltage seal chamber, blowout prevention sealing can be played the role of.
The well head pressure measured according to digital display manometer, the intracavitary pressure of automatic adjustment ring packing.When well head pressure reaches
To when setting pressure, high-pressure sealing chamber is simultaneously sealed with maximum pressure by automatic alarm, solves unattended automatic control
The problem of preventing crude oil leakage, realizes intelligence.
Intelligence well mouth sealing device provided by the invention, what the oil well that dual-seal combination solves 90% or more generated
Eccentric wear problem.Solve leakage problem when replacement packing.Solve the problems, such as to prevent blowout solve that well head is intelligentized to ask
Topic.Dry grinding is solved the problems, such as using middle cavity is grease-added.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. it is a kind of intelligence well mouth sealing device, which is characterized in that including floating double seal and it is a set of can be pressure compensated
Hydraulic energy-accumulating boosting system；Floating double seal includes shell (6) and ring-shaped sealing sleeve (19)；Shell (6) top has 360
Sliding slot is spent, is fixedly installed in the shell (6) inner chamber body by the first support ring (5) and the second support ring (7) annular close
Big envelope (19), the ring-shaped sealing sleeve are made of straight tube connector sleeve and at least one annular high voltage seal chamber, ring-shaped sealing sleeve
(19) top straight tube connection set upper side be equipped with can in the sliding slot of shell (6) top horizontal float floating packing box (4), float
It is equipped with packing (3) in dynamic packing box (4), spring bearer plate (1) and packing locking cap (2), pumping unit light is installed on packing (3)
Bar (20) is mounted on ring-shaped sealing sleeve (19) inside, and upper end sequentially passes through floating packing box (4), packing (3), spring bearer plate (1)
With packing locking cap (2), shell (6) lower part is connected with the hydraulic energy-accumulating boosting system being connected to high-pressure sealing chamber.
2. intelligence well mouth sealing device according to claim 1, which is characterized in that the hydraulic energy-accumulating boosting system packet
Include triple-valve body (9) and liquid booster jar (12)；The triple-valve body (9) is mounted on shell (6) lower part, and and high pressure sealing
Chamber is connected to, and is provided with digital display manometer (10) on triple-valve body (9), and triple-valve body (9) front end is provided with liquid of unidirectionally nourishing
The inlet of valve (11), top are provided with liquid booster jar (12), and liquid booster jar (12) upper end is provided with bracket (15), liquid
It is provided in booster jar (12) pressurization plunger (13), pressurization plunger (13) upper end is provided with precompressed counterbalance spring (14), and precompressed is mended
It repays spring (14) upper end and is provided with pressurization screw rod (16), driving handwheel or motor (17) and control are provided in pressurization screw rod (16)
Device (18), bracket (15) fixed pressurization plunger (13), precompressed counterbalance spring (14), pressurization screw rod (16), driving handwheel or motor
(17) and controller (18).
3. intelligence well mouth sealing device according to claim 1, which is characterized in that the controller (18) includes driving
Motor drive module, pressure and the temperature judgment module and wireless remote transmission remote control module of motor.
4. intelligence well mouth sealing device according to claim 3, which is characterized in that the pressure and temperature judgment module
Including liquid booster jar pressure acquisition module, well head pipeline pressure acquisition module and well head local temperature acquisition module.
5. intelligence well mouth sealing device according to claim 1, which is characterized in that described shell (6) lower end is connected with
Thread or clip (8) are connect by thread or clip (8) with well head.
6. intelligence well mouth sealing device according to claim 1, which is characterized in that the shape of shell (6) is cylinder.
7. intelligence well mouth sealing device according to claim 1, which is characterized in that the ring-shaped sealing sleeve (19) uses
Flexible material is made.
8. intelligence well mouth sealing device according to claim 7, which is characterized in that the flexible material is polyurethane material
Material.
9. intelligence well mouth sealing device according to claim 1, which is characterized in that the sliding slot includes sliding slot bottom plate
(24) and for floating packing box (4) the sliding slot pressing plate (23) to float；Sliding slot bottom is provided on the flange on described shell (6) top
Plate (24) is provided with sliding slot pressing plate (23) on sliding slot bottom plate (24), shell (6) top, sliding slot bottom plate (24) and sliding slot pressing plate
(23) it is bolted.
10. intelligence well mouth sealing device according to claim 1, which is characterized in that set on the floating packing box (4)
It is equipped with the circular flange slider disc for floating in sliding slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070310.3A CN109736739A (en) | 2019-01-24 | 2019-01-24 | A kind of intelligence well mouth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910070310.3A CN109736739A (en) | 2019-01-24 | 2019-01-24 | A kind of intelligence well mouth sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109736739A true CN109736739A (en) | 2019-05-10 |
Family
ID=66365949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910070310.3A Pending CN109736739A (en) | 2019-01-24 | 2019-01-24 | A kind of intelligence well mouth sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109736739A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927368A (en) * | 2020-07-17 | 2020-11-13 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
| CN114745608A (en) * | 2022-03-21 | 2022-07-12 | 盘锦大奔金蚁橡胶制品有限公司 | Intelligent early warning online sealing device |
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| CN105971544A (en) * | 2016-07-14 | 2016-09-28 | 哈尔滨理工大学 | Follow-up type automatic compensation polished rod sealing device |
| WO2017117837A1 (en) * | 2016-01-08 | 2017-07-13 | 于立成 | Wellhead sealing device of sucker-rod pumping machine |
| CN108240195A (en) * | 2018-02-08 | 2018-07-03 | 许和谦 | Polished rod sealer |
| CN209539311U (en) * | 2019-01-24 | 2019-10-25 | 刘胜益 | A kind of well mouth sealing device |
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| CN2500793Y (en) * | 2001-08-20 | 2002-07-17 | 石油大学(华东) | Follow-type centralising pumping polish rod well head sealer |
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| CN202215182U (en) * | 2011-08-31 | 2012-05-09 | 吴缝钢 | Double-seal lubrication type self-sealing packer box |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927368A (en) * | 2020-07-17 | 2020-11-13 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
| CN111927368B (en) * | 2020-07-17 | 2021-06-22 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
| CN113530486A (en) * | 2021-08-10 | 2021-10-22 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
| CN113530486B (en) * | 2021-08-10 | 2022-11-01 | 江苏益马机械有限公司 | Oil recovery well head seal structure |
| CN114320208A (en) * | 2022-03-11 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Self-tightening sealing structure of gas well wellhead visualization device |
| CN114320208B (en) * | 2022-03-11 | 2022-05-06 | 四川圣诺油气工程技术服务有限公司 | Gas well head visualization device's self-tightening sealing structure |
| CN114745608A (en) * | 2022-03-21 | 2022-07-12 | 盘锦大奔金蚁橡胶制品有限公司 | Intelligent early warning online sealing device |
| CN114745608B (en) * | 2022-03-21 | 2023-01-17 | 辽宁天源大奔科技集团有限公司 | Intelligent early warning online sealing device |
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