CN109113630A - A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly - Google Patents
A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly Download PDFInfo
- Publication number
- CN109113630A CN109113630A CN201810930308.4A CN201810930308A CN109113630A CN 109113630 A CN109113630 A CN 109113630A CN 201810930308 A CN201810930308 A CN 201810930308A CN 109113630 A CN109113630 A CN 109113630A
- Authority
- CN
- China
- Prior art keywords
- well head
- base
- biconial
- top base
- head top
- 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
- 238000005299 abrasion Methods 0.000 title claims abstract description 22
- 239000003129 oil well Substances 0.000 title claims abstract description 22
- 230000002265 prevention Effects 0.000 title claims abstract description 21
- 230000001681 protective effect Effects 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 claims abstract description 88
- 210000004907 gland Anatomy 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000010779 crude oil Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 239000010687 lubricating oil Substances 0.000 description 18
- 239000003921 oil Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 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
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of taper oil well environment protective eccentric abrasion prevention wellhead assemblies, including well head top base set up and down and well head bottom base and through the polished rod of well head top base and well head bottom base, well head top base and well head bottom base lower part are provided with boss around inner wall, cone mouth pad and biconial packing set are disposed on boss from bottom to top, biconial packing set is set on polished rod and the upper end is arranged with taper sheath cover board, taper sheath cover board upper surface is provided with the pressing plate being arranged respectively along well head top base and well head bottom base inner wall, gland is also connected on the inner wall of well head top base upper end, inflation coil pipe is additionally provided in well head top base and well head bottom base, it is also respectively provided on well head top base and well head bottom base side wall and the upper inflating port and lower inflating port of corresponding inflation coil pipe connection, base under the lower end of well head top base inner wall and well head The upper end of seat inner wall is connected by connecting tube.Solve the problems, such as that packing service life is short in the prior art and leakage crude oil recovery difficulty is big.
Description
Technical field
The invention belongs to well mouth of oil well technical field of sealing technology, and in particular to a kind of taper oil well environment protective eccentric abrasion prevention well head dress
It sets.
Background technique
Well mouth of oil well packing is the sealing element of polished rod and well head, and the petroleum produced from stratum is made to enter specified pipeline, polished rod
The daily number that does relatively reciprocating motion can reach 9,000 times or so with packing, and frequent friction makes the service life of packing greatly
It reduces, few then ten days, more, one or two months are just replaced, and the crude oil that replacement packing is leaked out with cleaning increases work
The labor intensity of people, the crude oil recovery difficulty leaked out is big, and very big pollution is caused to environment.
Summary of the invention
The object of the present invention is to provide a kind of taper oil well environment protective eccentric abrasion prevention wellhead assemblies, solve and exist in the prior art
Packing service life is short and problem that the crude oil recovery difficulty that leaks out is big.
The technical scheme adopted by the invention is that a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly, includes coaxially to be in
Shelly-shaped well head top base and well head bottom base setting up and down, and it is through well head top base and well head bottom base and same with it
The lower part of the polished rod of axis setting, well head top base is provided with boss around inner sidewall, and the lower part of well head bottom base is arranged around inner sidewall
There is boss, the boss upper surface of top base is disposed with cone mouth pad and biconial packing set, the boss of bottom base from bottom to top
Upper surface is disposed with cone mouth pad and biconial packing set from bottom to top, and biconial packing set is set on polished rod and the upper end
It is arranged with taper sheath cover board, taper sheath cover board upper surface, which is provided with, to be respectively arranged along well head top base and well head bottom base inner wall
Pressing plate, the upper end of well head top base inner wall have also been connected through a screw thread gland, and gland is against the pressing plate in well head top base
On, well head top base and well head bottom base inner wall, which are located between biconial packing set, is additionally provided with inflation coil pipe, well head top base
Be also respectively provided on well head bottom base side wall with corresponding inflation the coil pipe upper inflating port and lower inflating port that connect, base on well head
The lower end of seat inner wall has been connected through a screw thread connecting tube, and the other end of connecting tube is threadedly attached in well head bottom base inner wall
Upper end, the both ends of connecting tube are against the boss lower surface in well head top base and the pressing plate in well head bottom base respectively
Upper surface.
It is of the invention to be further characterized in that,
The lower end of well head bottom base has been connected through a screw thread well mouth oil pipe.
Connecting tube, polished rod, biconial packing set, taper sheath cover board and pressing plate in well head bottom base and be located at well
Lubricant reservoir is formed between boss, cone mouth pad in mouth top base and biconial packing set.
The draining hole being connected to lubricant reservoir is also provided on the side wall of connecting tube.
The side wall of well head top base and well head bottom base respectively with the boss, cone mouth pad, biconial disk that are correspondingly arranged in it
Cavity is formed between root set, taper sheath cover board and pressing plate, inflation coil pipe is set in cavity.
Cone mouth pad is placed on boss upper surface, and the upper surface of cone mouth pad is set as helical stand scalariform, biconial packing set
Lower surface is set as the spiral terrace to match with the upper surface of cone mouth pad, the following table of the upper surface of cone mouth pad and biconial packing set
Face is cooperated by helical stand terrace and is connected.
The outer diameter of biconial packing set is to be sequentially increased from top to bottom.
Biconial packing set is rubber biconial packing set.
Upper inflating port and lower inflating port are located at the position that middle part is on the lower side on well head top base and well head bottom base side wall.
The beneficial effects of the present invention are:
1. being inflated by the inflating port to upper and lower inflation coil pipe to coil pipe, the high pressure gas being sealed in inflation coil pipe
Upper and lower base internal wall, taper sheath cover board, pressing plate limitation under biconial packing set is pressed on polished rod, when polished rod downlink
When, polished rod is attached on polished rod by the lubricating oil in lubricant reservoir, lubricating oil, when the polished rod of attaching oil passes through lower part biconial
When packing covers, extra lubricating oil is stayed in lubricant reservoir, remaining lubricating oil forms oil film to polished rod and bipyramid on polished rod
Shape packing set is lubricated；When polished rod uplink, polished rod is attached on polished rod by the lubricating oil in lubricant reservoir, lubricating oil,
When the polished rod for adhering to lubricating oil is covered by top biconial packing, extra lubricating oil is stayed in lubricant reservoir, remaining profit
Lubricating oil forms oil film on polished rod and is lubricated to polished rod and biconial packing set, thus improves the lubricant effect of set and polished rod,
Improve the service life of tapered packing；
2. when biconial packing cover wear after, inflate coil pipe in gas expansion, biconial packing cover disc for air inflation caliber to
Itself is rotated under pressure, and during rotation, biconial packing covers length and increases, and increases length from taper cover board taper hole
It screws out, biconial packing set inner hole becomes smaller, and again compresses polished rod, to improve the wear-thickness of biconial packing set, improves
The service life of tapered packing；
3. the volume of gas tube becomes larger after biconial packing set may wear to extreme degree, interior pressure reduces, and acts on
Biconial packing covers upper pressure and reduces, when the radial pressure of inflation coil pipe is not enough to biconial packing set being pressed on polished rod
On, the crude oil in well covers the gap between polished rod from biconial packing and leaks out, and enters in lubricant reservoir, when in lubricant reservoir
Liquid level when being more than draining hole, along draining hole by pipeline, flow into specified containers, then recycled, crude oil recovery difficulty
It is small and environmentally friendly；
4. biconial packing set of the present invention is external to inflate coil pipe, biconial packing set and well head base internal wall have certain
Distance, when polished rod and not coaxial well head base axis, i.e., polished rod axis offset when, be pressurized one side squeeze inflation coil pipe, due to
Gas has very strong mobility, and high pressure gas is flowed to another side, and biconial packing is covered and is compressed, biconial disk is achieved in
Root covers 360 degree of any directions in well head pedestal and realizes a certain amount of displacement, not will receive the pressure of outside coil, prevents partially
Mill causes to wear to packing.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of taper oil well environment protective eccentric abrasion prevention wellhead assembly of the present invention；
Fig. 2 is the structural schematic diagram of cone mouth pad in a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly of the present invention；
Fig. 3 is that the structure of the bottom of biconial packing set in a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly of the present invention is shown
It is intended to.
In figure, 1. polished rods, 2. well head bottom bases, 3. cone mouth pads, 4. biconial packing sets, 5. inflation coil pipes, 6. taper sheaths
Cover board, 7. pressing plates, 8. connecting tubes, 9. well head top bases, 10. glands, 12. draining holes, 13. inflating ports, 14. lubricant reservoirs, 15.
Lower inflating port.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly of the present invention, structure is as shown in Figure 1, include coaxially to present to divide into
The shelly-shaped well head top base 9 and well head bottom base 2 set, and through well head top base 9 and well head bottom base 2 and coaxially
The lower part of the polished rod 1 of setting, well head top base 9 is provided with boss around inner sidewall, and the lower part of well head bottom base 2 is arranged around inner sidewall
Have a boss, the boss upper surface of top base is disposed with cone mouth pad 3 and biconial packing set 4 from bottom to top, bottom base it is convex
Platform upper surface be disposed with from bottom to top cone mouth pad 3 and biconial packing set 4, biconial packing set 4 be set on polished rod 1 and
The upper end, which is arranged with, covers the taper sheath cover board 6 that matches of 4 tapers with biconial packing, and 6 upper surface of taper sheath cover board is provided with point
The pressing plate 7 not being arranged along well head top base 9 and 2 inner wall of well head bottom base, the upper end of 9 inner wall of well head top base are also connected by screw thread
It is connected to gland 10, gland 10 is against on the pressing plate 7 in well head top base 9,2 inner wall of well head top base 9 and well head bottom base
It is additionally provided with inflation coil pipe 5 between biconial packing set 4, is also set respectively on 2 side wall of well head top base 9 and well head bottom base
It is equipped with the upper inflating port 13 and lower inflating port 15 connected with corresponding inflation coil pipe 5, the lower end of 9 inner wall of well head top base
It is connected through a screw thread connecting tube 8, the other end of connecting tube 8 is threadedly attached in the upper end of 2 inner wall of well head bottom base, connection
The both ends of pipe 8 are against the boss lower surface in well head top base 9 and the table on the pressing plate 7 in well head bottom base 2 respectively
Face.
The lower end of well head bottom base 2 has been connected through a screw thread well mouth oil pipe.
Connecting tube 8, polished rod 1, the biconial packing set 4 in well head bottom base 2, taper sheath cover board 6 and pressing plate 7 and
Lubricant reservoir 14 is formed between boss, cone mouth pad 3 in well head top base 9 and biconial packing set 4.
The draining hole 12 being connected to lubricant reservoir 14 is also provided on the side wall of connecting tube 8.
The side wall of well head top base 9 and well head bottom base 2 respectively with the boss, the cone mouth pad 3, biconial that are correspondingly arranged in it
Cavity is formed between packing set 4, taper sheath cover board 6 and pressing plate 7, inflation coil pipe 5 is set in cavity.
As shown in Fig. 2, cone mouth pad 3 is individually positioned in the boss upper surface in top base and bottom base, the upper table of cone mouth pad 3
Face is set as helical stand scalariform, as shown in figure 3, the lower surface of biconial packing set 4 is set as matching with the upper surface of cone mouth pad 3
Spiral terrace, the lower surface of the upper surface of cone mouth pad 3 and biconial packing set 4 is cooperated by helical stand terrace to be connected.
The outer diameter of biconial packing set 4 is to be sequentially increased from top to bottom.
Biconial packing set 4 is rubber biconial packing set.
It is on the lower side that upper inflating port 13 and lower inflating port 15 are located at middle part on 2 side wall of well head top base 9 and well head bottom base
Position.
A kind of working principle of taper oil well environment protective eccentric abrasion prevention wellhead assembly of the present invention are as follows:
(1) long-acting operation logic
Upper inflating port 13 and lower inflating port 15 are respectively to the inflation coil pipe 5 being located in well head top base 9 and well head bottom base 2
It is inflated, is sealed in the high pressure gas in inflation coil pipe 5 in the inner wall of well head top base 9 and well head bottom base 2, taper upper shield
Plate 6, pressing plate 7 limitation under biconial packing set 4 is pressed on polished rod 1, when 1 downlink of polished rod, polished rod 1 passes through lubricant reservoir
Lubricating oil in 14, lubricating oil are attached on polished rod 1, extra when the polished rod 1 of attaching oil is by lower part biconial packing set 4
Lubricating oil stay in lubricant reservoir 14, remaining lubricating oil formed on polished rod 1 oil film to polished rod 1 and biconial packing set 4
It is lubricated；When 1 uplink of polished rod, polished rod 1 is by the lubricating oil in lubricant reservoir 14, and lubricating oil is attached on polished rod 1, when attached
Lubricating oil polished rod 1 by top biconial packing set 4 when, extra lubricating oil stays in lubricant reservoir 14, remaining profit
Lubricating oil forms oil film on polished rod 1 and is lubricated to polished rod 1 and biconial packing set 4, thus improves biconial packing set 4 and light
The lubricant effect of bar 1 improves the service life of biconial packing set 4；
When biconial packing set 4 abrasion after, inflate coil pipe 5 in gas expansion, biconial packing set 4 disc for air inflation caliber to
Itself is rotated under pressure, and during rotation, biconial packing covers 4 length and increases, and is increased length and is bored from taper cover board 6
Hole screws out, and biconial packing covers 4 inner holes and becomes smaller, and again compresses polished rod 1, improves the wear-thickness of biconial packing set 4, thus
Improve the service life of tapered packing 4.
(2) leakproof operation logic
After biconial packing set 4 may wear to extreme degree, the volume of inflation coil pipe 5 becomes larger, and interior pressure reduces, effect
Pressure on biconial packing set 4 reduces, when the radial pressure of inflation coil pipe 5 is not enough to for biconial packing set 4 being pressed on
On polished rod 1, the crude oil in well is leaked out from the gap between biconial packing set 4 and polished rod 1, is entered in lubricant reservoir 14, when
When liquid level in lubricant reservoir 14 is more than draining hole 12, along draining hole 12 by pipeline, specified containers is flowed into, are then returned
It receives.
(3) eccentric abrasion prevention principle
4 outside of biconial packing set of the invention is inflation coil pipe 5, biconial packing set 4 and well head top base 9 and well head
The inner wall of bottom base 2 has a certain distance, and when polished rod 1 is with well head top base 9 and not coaxial well head bottom base 2, polished rod 1 can be with
It drives biconial packing to cover 4 pairs of inflation coil pipes to squeeze, since gas has very strong mobility, after being pressurized on one side, flow to another
Side, while biconial packing set 4 being pressed on polished rod 1, to make biconial packing set 4 under well head top base 9 and well head
360 degree of any direction realizes a certain amount of displacement in pedestal 2.
Claims (9)
1. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly, which is characterized in that include coaxial set up and down shelly-shaped
Well head top base (9) and well head bottom base (2), and set through well head top base (9) and well head bottom base (2) and coaxially
The lower part of the polished rod (1) set, the well head top base (9) is provided with boss, the lower part of the well head bottom base (2) around inner sidewall
Inner sidewall is provided with boss, the boss upper surface of the well head top base (9) be disposed with from bottom to top cone mouth pad (3) and
Biconial packing set (4), the boss upper surface of the well head bottom base (2) are disposed with cone mouth pad (3) and double from bottom to top
Tapered packing set (4), the biconial packing set (4) is set on polished rod (1) and the upper end is arranged with taper sheath cover board (6),
Taper sheath cover board (6) upper surface, which is provided with, to be respectively arranged along the well head top base (9) and well head bottom base (2) inner wall
The upper end of pressing plate (7), well head top base (9) inner wall has also been connected through a screw thread gland (10), and the gland (10) is against
On the pressing plate (7) in the well head top base (9), the well head top base (9) and well head bottom base (2) inner wall are positioned at double
It is additionally provided with inflation coil pipe (5) between tapered packing set (4), is gone back on the well head top base (9) and well head bottom base (2) side wall
It is respectively arranged with and the upper inflating port (13) and lower inflating port (15) of corresponding inflation coil pipe (5) connection, the well head top base (9)
The lower end of inner wall has been connected through a screw thread connecting tube (8), and the other end of connecting tube (8) is threadedly attached in well head bottom base
(2) upper end of inner wall, the both ends of the connecting tube (8) are against the boss lower surface in well head top base (9) respectively
With pressing plate (7) upper surface being located in the well head bottom base (2).
2. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly according to claim 1, which is characterized in that under the well head
The lower end of pedestal (2) has been connected through a screw thread well mouth oil pipe.
3. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly according to claim 1, which is characterized in that the connecting tube
(8), polished rod (1), biconial packing set (4), taper sheath cover board (6) and pressing plate (7) in well head bottom base (2) and position
Lubricant reservoir (14) are formed between boss (11), cone mouth pad (3) and the biconial packing set (4) in well head top base (9).
4. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly according to claim 2, which is characterized in that the connecting tube
(8) draining hole (12) being connected to lubricant reservoir (14) is also provided on side wall.
5. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly according to claim 1, which is characterized in that on the well head
The side wall of pedestal (9) and well head bottom base (2) respectively with the boss, cone mouth pad (3), biconial packing set that are correspondingly arranged in it
(4), cavity is formed between taper sheath cover board (6) and pressing plate (7), the inflation coil pipe (5) is set in the cavity.
6. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly described in -5 any one according to claim 1, which is characterized in that
The upper surface of the cone mouth pad (3) is set as helical stand scalariform, and the lower surface of the biconial packing set (4) is set as and cone mouth
Pad the spiral terrace that the upper surface of (3) matches, the following table of the upper surface of the cone mouth pad (3) and the biconial packing set (4)
Face is cooperated by helical stand terrace and is connected.
7. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly described in -5 any one according to claim 1, which is characterized in that
The outer diameter of the biconial packing set (4) is to be sequentially increased from top to bottom.
8. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly described in -5 any one according to claim 1, which is characterized in that
The biconial packing set (4) is rubber biconial packing set.
9. a kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly according to claim 8, which is characterized in that the upper inflation
Mouth (13) and lower inflating port (15) are located at the position that middle part is on the lower side on well head top base (9) and well head bottom base (2) side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930308.4A CN109113630A (en) | 2018-08-15 | 2018-08-15 | A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930308.4A CN109113630A (en) | 2018-08-15 | 2018-08-15 | A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109113630A true CN109113630A (en) | 2019-01-01 |
Family
ID=64852718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810930308.4A Pending CN109113630A (en) | 2018-08-15 | 2018-08-15 | A kind of taper oil well environment protective eccentric abrasion prevention wellhead assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU208929U1 (en) * | 2021-10-08 | 2022-01-24 | Марат Минсалимович Минзарипов | WELL SEAL |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4981174A (en) * | 1990-02-14 | 1991-01-01 | White Orvel O | Leakproof stuffing box with external lubrication for polish rod |
| CN202417399U (en) * | 2012-02-22 | 2012-09-05 | 大庆大华宏业石油工程技术有限公司 | Pumping unit well mouth sealing device assembly |
| CN204436310U (en) * | 2015-01-26 | 2015-07-01 | 葛培强 | A kind of four anti-polish rod seal devices |
| CN204476340U (en) * | 2015-02-12 | 2015-07-15 | 朱志学 | A kind of double-packing incline lubricating type packing box |
| CN106968631A (en) * | 2017-04-24 | 2017-07-21 | 赵吉春 | A kind of long-acting anti-oil leakage device of well mouth of oil well |
| CN108150126A (en) * | 2018-02-26 | 2018-06-12 | 席建桢 | A kind of automatic adjustment packing box for preventing eccentric wear and oil leak |
| CN108708683A (en) * | 2018-04-08 | 2018-10-26 | 赵吉春 | A kind of oil well environment protective eccentric abrasion prevention wellhead assembly |
-
2018
- 2018-08-15 CN CN201810930308.4A patent/CN109113630A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4981174A (en) * | 1990-02-14 | 1991-01-01 | White Orvel O | Leakproof stuffing box with external lubrication for polish rod |
| CN202417399U (en) * | 2012-02-22 | 2012-09-05 | 大庆大华宏业石油工程技术有限公司 | Pumping unit well mouth sealing device assembly |
| CN204436310U (en) * | 2015-01-26 | 2015-07-01 | 葛培强 | A kind of four anti-polish rod seal devices |
| CN204476340U (en) * | 2015-02-12 | 2015-07-15 | 朱志学 | A kind of double-packing incline lubricating type packing box |
| CN106968631A (en) * | 2017-04-24 | 2017-07-21 | 赵吉春 | A kind of long-acting anti-oil leakage device of well mouth of oil well |
| CN108150126A (en) * | 2018-02-26 | 2018-06-12 | 席建桢 | A kind of automatic adjustment packing box for preventing eccentric wear and oil leak |
| CN108708683A (en) * | 2018-04-08 | 2018-10-26 | 赵吉春 | A kind of oil well environment protective eccentric abrasion prevention wellhead assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU208929U1 (en) * | 2021-10-08 | 2022-01-24 | Марат Минсалимович Минзарипов | WELL SEAL |
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