CN106437600A - Oil production wellhead sealing device - Google Patents
Oil production wellhead sealing device Download PDFInfo
- Publication number
- CN106437600A CN106437600A CN201611011054.3A CN201611011054A CN106437600A CN 106437600 A CN106437600 A CN 106437600A CN 201611011054 A CN201611011054 A CN 201611011054A CN 106437600 A CN106437600 A CN 106437600A
- Authority
- CN
- China
- Prior art keywords
- connector
- main body
- sealing device
- gland
- seal ring
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 210000004907 gland Anatomy 0.000 claims description 19
- 238000000605 extraction Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 5
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000010068 moulding (rubber) Methods 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000000007 visual 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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)
- Gasket Seals (AREA)
Abstract
The invention discloses an oil production wellhead sealing device. The oil production wellhead sealing device comprises a pressure cover, semicircular seal gaskets, a conical seal ring, pressure relief pipes and an oil pumping rod. The pressure cover is connected with a first connector through pressure cover bolts, the conical seal ring is mounted at the lower end of the pressure cover, a second connector is mounted at the lower end of the first connector and fixedly mounted on a body, a seal ring is arranged between the second connector and the oil pumping rod, and the oil pumping rod is arranged in the middle of the body. Adjustment screws are arranged in the body which is connected with pressure relief plates through springs, the pressure relief pipes are arranged at the upper end of the body, the semicircular seal gaskets are mounted at the tail ends of the adjustment screws respectively, and a joint is fixedly mounted at the lower end of the body. By arrangement of the pressure relief plates and the pressure relief pipes, blowout can be effectively prevented, and buffering pressure relief is realized. In addition, the oil production wellhead sealing device is simple in structure and low in cost, downhole accidents are reduced, and production benefits of oil fields are increased.
Description
Technical field
The present invention relates to technical field of oil extraction equipment, specially a kind of oil extraction wellhead sealing device.
Background technology
Increasingly sharpening with energy demand, oil exploitation has become as an important channel of energy supply.With oil
Field development process and the prolongation of production time, the multinomial technological measure workload of oil well increases increasingly.Wellhead assembly is to ensure that oil
The normal visual plant producing of well, although particularly wellhead for production species is various, structure is also had nothing in common with each other.But it is as making
With the increase of number of times, its weak point increasingly shows especially, and its parts often damages, maintenance difficult, and it does not preferably seal
Structure, easily causes the generation of leakage accident it is impossible to reliably realize multinomial process operation, service life is short, increased enterprise
Cost of winning.According to relevant statistics, pumping well with pole accounts for more than the 90% of mechanical oil well sum, and in pumping well with pole
More than the 98% of its well mouth sealing device is all using conventional polish rod seal device.Due to the defect in structure, conventional polished rod seal
Device exposes many defects in applying at the scene, the crash rate of sealing ring is higher, and during oil extraction operation, rate is low.It is thus impossible to it is full
The existing demand of foot.
Content of the invention
It is an object of the invention to provide a kind of oil extraction wellhead sealing device, with asking of solving to propose in above-mentioned background technology
Topic, is had an advantageous effect in that；By the setting of pressure relief plate and relief tube, can effectively prevent the appearance of blowout phenomenon, and
And realize buffering pressure release, thus to avoid the waste of oil and the pollution of environment, it is able to ensure that personal security, structure letter simultaneously
Single, low cost, decreases the generation of down-hole accident, improves oil field productivity effect.
For achieving the above object, the present invention provides following technical scheme：A kind of oil extraction wellhead sealing device, including gland,
Semicircle sealing gasket, conical seal ring, relief tube and sucker rod, described gland is connected by gland bolt with the first connector, and
It is connected with the right side of the first connector upper end on the left of gland lower end, described gland lower end is provided with conical seal ring, described first even
Junctor lower end is provided with the second connector, and described second connector is fixedly mounted in main body, described second connector and oil pumping
It is provided with sealing ring, described sucker rod is arranged in the middle of main body, described body interior is provided with regulation screw mandrel, described master between bar
Body is connected by spring with pressure relief plate, and spring is arranged on body interior upper end, and described main body upper end is provided with relief tube, described
Adjusting screw end is provided with semicircle sealing gasket, and described main body lower end is installed with joint.
Preferably, described semicircle sealing gasket is formed using fluorubber molding.
Preferably, described sealing ring is formed using neoprene molding.
Preferably, described conical seal ring is formed using nitrile rubber molding.
Compared with prior art, the invention has the beneficial effects as follows：This oil extraction wellhead sealing device, by pressure relief plate and pressure release
The setting of pipe, can effectively prevent the appearance of blowout phenomenon, and realizes buffering pressure release, thus avoiding waste and the ring of oil
The pollution in border, is able to ensure that personal security simultaneously, by the setting of semicircle sealing gasket, conical seal ring and sealing ring, makes this dress
The sealing property put is superior, Wear-resistant corrosion-resistant, long service life, to the safety in production in oil field, volume increase stable yields serve positive
Effect.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of semicircle sealing gasket of the present invention.
In figure：1- gland bolt；2- gland；3- first connector；4- second connector；5- main body；6- adjusts screw mandrel；7-
Joint；8- semicircle sealing gasket；9- conical seal ring；10- sealing ring；11- relief tube；12- spring；13- pressure relief plate；14- pumps
Bar.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1-2, a kind of embodiment that the present invention provides：A kind of oil extraction wellhead sealing device, including gland 2, partly
Circle sealing gasket 8, conical seal ring 9, relief tube 11 and sucker rod 14, gland 2 is connected by gland bolt 1 with the first connector 3,
And be connected with the right side of the first connector 3 upper end on the left of gland 2 lower end, gland 2 lower end is provided with conical seal ring 9, the first connection
Body 3 lower end is provided with the second connector 4, and the second connector 4 is fixedly mounted in main body 5, the second connector 4 and sucker rod 14 it
Between be provided with sealing ring 10, sucker rod 14 is arranged in the middle of main body 5, and main body 5 is internally provided with regulation screw mandrel 6, main body 5 and pressure release
Plate 13 is connected by spring 12, and spring 12 is arranged on main body 5 inner upper end, and main body 5 upper end is provided with relief tube 11, adjusts silk
Thick stick 6 end is provided with semicircle sealing gasket 8, and main body 5 lower end is installed with joint 7, and semicircle sealing gasket 8 is using fluorubber molding
Become, sealing ring 10 is formed using neoprene molding, conical seal ring 9 is formed using nitrile rubber molding.
Operation principle：During use, joint 7 is connected with wellhead assembly, by gland bolt 1, gland 2, the first connector 3,
The purpose to reach sealing wellhead for the setting of the second connector 4, conical seal ring 9 and sealing ring 10, the regulation silk within main body 5
Bar 6, for adjusting semicircle sealing gasket 8 so as to snap on sucker rod 14, in order to control blowout, by pressure relief plate 13 and relief tube
11 setting, can effectively prevent the appearance of blowout phenomenon, and realizes buffering pressure release, thus avoiding waste and the ring of oil
The pollution in border, is able to ensure that personal security simultaneously, by the setting of semicircle sealing gasket 8, conical seal ring 9 and sealing ring 10, makes
The sealing property of this device is superior, Wear-resistant corrosion-resistant, long service life, to the safety in production in oil field, volume increase stable yields serve long-pending
The effect of pole.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.
Claims (4)
1. a kind of oil extraction wellhead sealing device, including gland (2), semicircle sealing gasket (8), conical seal ring (9), relief tube (11)
With sucker rod (14) it is characterised in that：Described gland (2) is connected by gland bolt (1) with the first connector (3), and gland
(2) it is connected with the right side of the first connector (3) upper end on the left of lower end, described gland (2) lower end is provided with conical seal ring (9), institute
State the first connector (3) lower end and the second connector (4) be installed, described second connector (4) is fixedly mounted in main body (5),
It is provided with sealing ring (10), described sucker rod (14) is arranged on main body (5) between described second connector (4) and sucker rod (14)
Centre, described main body (5) is internally provided with regulation screw mandrel (6), and described main body (5) and pressure relief plate (13) pass through spring (12) even
Connect, and spring (12) is arranged on main body (5) inner upper end, described main body (5) upper end is provided with relief tube (11), described regulation silk
Thick stick (6) end is provided with semicircle sealing gasket (8), and described main body (5) lower end is installed with joint (7).
2. a kind of oil extraction wellhead sealing device according to claim 1 it is characterised in that：Described semicircle sealing gasket (8) is adopted
Formed with fluorubber molding.
3. a kind of oil extraction wellhead sealing device according to claim 1 it is characterised in that：Described sealing ring (10) adopts chlorine
Buna molding forms.
4. a kind of oil extraction wellhead sealing device according to claim 1 it is characterised in that：Described conical seal ring (9) is adopted
Formed with nitrile rubber molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011054.3A CN106437600A (en) | 2016-11-17 | 2016-11-17 | Oil production wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011054.3A CN106437600A (en) | 2016-11-17 | 2016-11-17 | Oil production wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106437600A true CN106437600A (en) | 2017-02-22 |
Family
ID=58220985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611011054.3A Pending CN106437600A (en) | 2016-11-17 | 2016-11-17 | Oil production wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437600A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205330597U (en) * | 2016-02-15 | 2016-06-22 | 刘向阳 | Sealing device for oil recovery |
| CN205330598U (en) * | 2016-02-15 | 2016-06-22 | 李学军 | Producing well mouth sealing device |
-
2016
- 2016-11-17 CN CN201611011054.3A patent/CN106437600A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205330597U (en) * | 2016-02-15 | 2016-06-22 | 刘向阳 | Sealing device for oil recovery |
| CN205330598U (en) * | 2016-02-15 | 2016-06-22 | 李学军 | Producing well mouth sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
|
| RJ01 | Rejection of invention patent application after publication |