CN105952409A - Hydraulic wellhead polished rod stuffing box self-tightening device - Google Patents
Hydraulic wellhead polished rod stuffing box self-tightening device Download PDFInfo
- Publication number
- CN105952409A CN105952409A CN201610540323.9A CN201610540323A CN105952409A CN 105952409 A CN105952409 A CN 105952409A CN 201610540323 A CN201610540323 A CN 201610540323A CN 105952409 A CN105952409 A CN 105952409A
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- Prior art keywords
- tightening device
- polish rod
- energy
- hydraulic
- storage box
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- 238000004146 energy storage Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 238000012856 packing Methods 0.000 claims description 59
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 210000002445 nipple Anatomy 0.000 claims description 26
- 239000010720 hydraulic oil Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000003292 glue Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 210000001138 tear Anatomy 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)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a hydraulic wellhead polished rod stuffing box self-tightening device which comprises a hydraulic assembly and a stuffing box assembly in pipeline connection with the hydraulic assembly, wherein the hydraulic assembly comprises an energy storage case part (12) and a variable-diameter piston (13) arranged in the energy storage case part (12); the stuffing box assembly comprises a stuffing rubber (5), a diameter expansion joint (4), a rubber sealing drum (3), a seal joint (2) and a built-in sliding sleeve (1) which are sequentially arranged upwards from a three-dimensional regulating sphere (8) coaxial with a wellhead polished rod (14); and the three-dimensional regulating sphere (8) is in detachable threaded connection with the rubber sealing drum (3), the diameter expansion joint (4) and the seal joint (2) sequentially. The wellhead polished rod stuffing box self-tightening device is reasonable in structural design, low in cost, convenient in installation and connection, good in sealing performance, safe and reliable in use, long in service life, and capable of effectively increasing the labor productivity, ensuring the production quality and eliminating potential safety hazards.
Description
Technical field
The present invention relates to a kind of fluid pressure type wellhead polish rod packing box Self tightening device, belong to technical field of oil production engineering.
Background technology
At present, in the production process of pumpingh well, wellhead polish rod is realized at wellhead polish rod slip by polished rod stuffing box
Seal, but owing to packing rubber is constantly in state of wear, cause its sealing life extremely limited, need operator frequently
Going tighten packing rubber or change packing rubber, in the oil field having, average every mouthful of well just need to tighten a packing glue in 2-3 days
Skin, changes a packing rubber for 15 days, and work is frequently and workload is huge, serious waste human and material resources resource, production cost
High.Additionally for high yield high-pressure well, as such wellhead sealing is tight, also it is easily caused well head thorn and leaks the even accident such as blowout out of control,
Bigger hidden danger is there is in terms of safety, quality, environmental protection.
Summary of the invention
It is an object of the invention to overcome current wellhead polish rod packing box to need manpower to make an inspection tour frequently, tighten, very
To the shortcoming of frequently replacing packing rubber, provide " a kind of fluid pressure type wellhead polish rod packing box Self tightening device ".This apparatus structure sets
Meter is rationally, low cost, installation be easy to connect, good seal performance, be a kind of safe and reliable, the life-span is long, is effectively improved work
Productivity ratio, it is ensured that the quality of production, the wellhead polish rod packing box Self tightening device eliminated safe hidden trouble.
To achieve these goals, the present invention is achieved by the following technical solutions: main technical scheme is, a kind of
Fluid pressure type wellhead polish rod packing box Self tightening device, including hydraulic package and the packing box assembly that is connected with hydraulic package pipeline.Institute
State hydraulic package and include energy-storage box parts 12 and the reducing piston 13 being placed in energy-storage box parts 12.
Described packing box assembly includes that the three-dimensional regulation spheroid 8 by arranging with wellhead polish rod 14 concentric upwards sets gradually
Packing rubber 5, expanding joint 4, rubber sealing drum 3, seal nipple 2 and built-in sliding sleeve 1.Three-dimensional regulation spheroid 8 successively with glue
Skin sealing drum 3, expanding joint 4 and seal nipple 2 are the most threaded.
Further technical scheme is, described packing rubber 5, at least provided with together, is placed in built-in sliding sleeve 1 lower surface and three
Dimension regulation spheroid 8 upper surface between, the both ends of the surface of packing rubber 5 respectively with on built-in sliding sleeve 1 lower surface and three-dimensional regulation spheroid 8
End face is fitted and connected, and is sheathed on wellhead polish rod 14, is connected with wellhead polish rod 14 interference fit.
Further technical scheme is that described energy-storage box parts 12 are by the hydraulic oil cavity 121 being structure as a whole, energy-storage box
Path section 122, energy-storage box central diameter section 123 and nitrogen cavity volume 124 form.
Further technical scheme is that described reducing piston 13 is set to big top and small bottom structure, described reducing piston
13 its small ends are 1:5 with the area ratio of big end, are placed in energy-storage box path section 122 interior with what energy-storage box central diameter section 123 collectively formed
In chamber.
Further technical scheme is, on the sidewall of seal nipple 2 and hydraulic oil cavity 121 upper end be respectively equipped with
Hydraulic pressure through hole I that hydraulic line 11 two ends is connected and hydraulic pressure through hole II, at hydraulic oil cavity 121 and nitrogen cavity volume 124
Sidewall on be respectively equipped with hydraulic oil hand-hole 1212 and nitrogen hand-hole 1241.
Further technical scheme is that described three-dimensional regulation spheroid 8 is located at upper flange 7 and lower flange 10 arranges structure jointly
On the ball seat 9 become, connecting by screw rod 6 location is fixing, lower flange 10 is connected with wellhead tree tree by UPTBG box 101.
Further technical scheme is, between the outer wall and the inwall of seal nipple inner core 22 of built-in sliding sleeve 1, and built-in cunning
It is respectively equipped with sliding sleeve O RunddichtringO 112 between set boss 111 outer wall and seal nipple 2 inwall.
Further technical scheme is, between big end outer wall and energy-storage box central diameter section 123 inwall of reducing piston 13, becomes
It is respectively equipped with reducing piston O RunddichtringO 131 between small end outer wall and energy-storage box path section 122 and the inwall of footpath piston 13.
Further technical scheme is, between the upper end inwall and the outer wall of rubber sealing drum 3 of expanding joint 4, expanding
It is respectively equipped with rubber sealing drum O RunddichtringO 31 and expanding joint between middle-end outer wall and seal nipple 2 lower end inner wall of joint 4
O RunddichtringO 41.
Further technical scheme is, at three-dimensional regulation spheroid 8 and lower sphere seat 92 and lower sphere seat 92 and lower flange 10
Spheroid O RunddichtringO 81 and lower sphere seat O RunddichtringO 93 it is respectively equipped with between corresponding binding face.
The present invention compared with prior art has the advantage that
1, this apparatus structure is reasonable in design, low cost, installation are easy to connect, good seal performance, is a kind of safe and reliable, longevity
Life is long, is effectively improved labor productivity, it is ensured that the quality of production, the wellhead polish rod packing box Self tightening device eliminated safe hidden trouble.
2, low cost, set of device price only 3000 yuan
3, hydraulic package and the packing box assembly being connected with hydraulic package pipeline, thus this dish of structures shape are included because of this device
It is constant that root box has hydraulic pressure, the characteristic of packing rubber self-tightening, it is not necessary to personnel make an inspection tour frequently, leakage detection, tighten or replacing dish
Root rubber, saves a large amount of human and material resources and time, is effectively improved labor productivity.
4, this device is provided with sliding sleeve O RunddichtringO 113, reducing piston O RunddichtringO 131, the sealing of expanding joint O type
Circle 41 and spheroid O RunddichtringO 81, form multiple-sealed structure, is effectively improved wellhead polish rod sealing property, eliminates well head thorn leakage
The even accident such as blowout out of control, it is ensured that high-quality, a safe and environmentally friendly production environment are provided.
5, it is located at upper flange 7 because of described three-dimensional regulation spheroid 8 and lower flange 10 arranges on the ball seat 9 of composition jointly,
Connect by screw rod 6 location is fixing.Polished rod 14 can be prevented inclined by adjusting screw rod 6 to adjust the axiality of polished rod 14 and well head
Move well head center and cause deformation, the aggravation abrasion to packing rubber, it is effectively improved the service life of this device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
In figure: 1, built-in sliding sleeve, 111, built-in sliding sleeve boss, 112, sliding sleeve O RunddichtringO, 2, seal nipple, 21, liquid
Pressure through hole I, 22, seal nipple inner core, 23, M90 × 1.5mm flat thread, 3, rubber sealing drum, 31, rubber sealing drum O type seals
Circle, 32, M74 × 1mm flat thread, 33, M60 × 1mm flat thread, 4, expanding joint, 41, expanding joint O RunddichtringO, 5, packing
Rubber, 6, screw rod, 7, upper flange, 8, three-dimensional regulation spheroid, 81, spheroid O RunddichtringO, 9, ball seat, 91, upper sphere seat, 92,
Lower sphere seat, 10, lower flange, 101, UPTBG box, 11, hydraulic line, 12, energy-storage box parts, 121, hydraulic oil cavity,
1211, hydraulic pressure through hole II, 1212, pressure hole I, 122, energy-storage box path section, 123, energy-storage box central diameter section, 124, nitrogen cavity volume,
1241, pressure hole II, 13, reducing piston, 131, reducing piston O RunddichtringO, 14, wellhead polish rod.
Detailed description of the invention
This corresponding apparatus structure can be designed, to meet the self-tightening requirement of all kinds of polished rod stuffing box according to polished rod size.
Below by non-limiting embodiment, illustrate the present invention, understand the present invention.
As it is shown in figure 1, a kind of fluid pressure type wellhead polish rod packing box Self tightening device, including hydraulic package and with hydraulic package pipe
The packing box assembly that line connects.Described hydraulic package includes energy-storage box parts 12 and the reducing piston being placed in energy-storage box parts 12
13。
Described packing box assembly includes that the three-dimensional regulation spheroid 8 by arranging with wellhead polish rod 14 concentric upwards sets gradually
Packing rubber 5, expanding joint 4, rubber sealing drum 3, seal nipple 2 and built-in sliding sleeve 1.Three-dimensional regulation spheroid 8 successively with glue
Skin sealing drum 3, expanding joint 4 and seal nipple 2 are the most threaded.It is that to realize rubber by M74 × 1mm flat thread 32 close
Sealed tube 3 and the connection of expanding joint 4；Expanding joint 4 and seal nipple 2 is realized by M90 × 1.5mm flat thread 23 flat thread
Connect；The connection of rubber sealing drum 3 and three-dimensional regulation spheroid 8 is realized by M60 × 1mm flat thread 33.
Described packing rubber 5 arranges seven roads altogether, is placed between built-in sliding sleeve 1 lower surface and three-dimensional regulation spheroid 8 upper surface,
The both ends of the surface of packing rubber 5 are fitted and connected with built-in sliding sleeve 1 lower surface and three-dimensional regulation spheroid 8 upper surface respectively, are sheathed on well
On mouth polish rod 14, it is connected with wellhead polish rod 14 interference fit.Wellhead polish rod 14 external diameter is 28mm, and the internal diameter of packing rubber 5 is
27.5mm, the internal diameter on built-in sliding sleeve 1 top, top is Ф 32mm, it is ensured that will not scratch wellhead polish rod 14.Built-in sliding sleeve 1 and sealing
Lifting surface area at joint 2 is 191mm2, under the pressure effect of 5MPa, built-in sliding sleeve 1 is to packing rubber 5 by generation about
The downforce of 300kg, had both ensured that packing rubber 5 was in compressive deformation state all the time, had realized again wellhead sealing.
Described energy-storage box parts 12 are by the hydraulic oil cavity 121 being structure as a whole, energy-storage box path section 122, energy-storage box
Footpath section 123 and nitrogen cavity volume 124 form.
Described reducing piston 13 is set to big top and small bottom structure, described its small end of reducing piston 13 and the big area held
Than being 1:5, it is placed in the inner chamber that energy-storage box path section 122 and energy-storage box central diameter section 123 collectively form.I.e. it is little for reducing piston 13
End is respectively placed in hydraulic oil cavity 121 and nitrogen cavity volume 124 with big end, and corresponding air pressure is only required to be 1/5 times of hydraulic pressure, so that it may
Realize the balance of air pressure and hydraulic pressure, thus meet low pressure and supply high hydraulic pressure.The setting principle of energy-storage box parts 12 is, due to liquid
The Incoercibility of body, it is difficult to realize pressure constant, therefore use air pressure to promote hydraulic pressure, air pressure has the characteristic that compressibility is strong,
When volume slight expansion (i.e. reducing piston 13 is slightly upper moves) of nitrogen energy accumulating, air pressure is held essentially constant constant, therefore can
Ensure that the hydraulic pressure on top is constant, thus the downforce realizing built-in sliding sleeve is constant, it is ensured that the constant voltage function of self-tightening of packing rubber 5.
The sidewall of seal nipple 2 is respectively equipped with and hydraulic line 11 two ends phase with hydraulic oil cavity 121 upper end
Leading to hydraulic pressure through hole I and the hydraulic pressure through hole II connect, be employing 1/4 " NPT detains connection, at hydraulic oil cavity 121 and nitrogen cavity volume
Hydraulic oil hand-hole 1212 and nitrogen hand-hole 1241 it is respectively equipped with, for injecting hydraulic oil and nitrogen on the sidewall of 124.
Described three-dimensional regulation spheroid 8 is located at upper flange 7 and lower flange 10 arranges on the ball seat 9 of composition jointly, spheroid
Seat 9 is made up of upper sphere seat 91 and lower sphere seat 92, connects by screw rod 6 location is fixing, and lower flange 10 is by 27/8" UPTBG mother
Button 101 is connected with wellhead tree tree.
Between the outer wall and the inwall of seal nipple inner core 22 of built-in sliding sleeve 1, built-in sliding sleeve boss 111 outer wall and sealing
Sliding sleeve O RunddichtringO 112 it is respectively equipped with between joint 2 inwall.Under hydraulic pressure conditions, hydraulic action is in forced section, to built-in cunning
Set 1 one downforce of generation, makes built-in sliding sleeve 1 descending, compression bottom packing rubber 5, makes packing rubber 5 be in stress all the time and becomes
The squeezed state of shape, thus realize function of self-tightening.
Between big end outer wall and energy-storage box central diameter section 123 inwall of reducing piston 13, the small end outer wall of reducing piston 13
And it is respectively equipped with reducing piston O RunddichtringO 131 between energy-storage box path section 122 and inwall, to realize reducing piston 13 in storage
Sealing in energy box part 12 is slided.
Between the upper end inwall and the outer wall of rubber sealing drum 3 of expanding joint 4, the middle-end outer wall of expanding joint 4 is with close
Rubber sealing drum O RunddichtringO 31 and expanding joint O RunddichtringO 41 it is respectively equipped with between sealing joint 2 lower end inner wall.
Between the binding face that three-dimensional regulation spheroid 8 and lower sphere seat 92 and lower sphere seat 92 and lower flange 10 are corresponding point
It is not provided with spheroid O RunddichtringO 81, is further ensured that wellhead sealing performance.
The present invention is further elucidated below and installs and uses process:
1, first lower flange 10, lower sphere seat 92, three-dimensional regulation spheroid 8, upper ball base body 91, upper flange are pressed figure sequence from bottom to top
Install and be fixed on production tree, then by M60 × 1mm flat thread, rubber sealing drum being installed on three-dimensional regulation spheroid
On, and 7 packing rubber are installed in inside；
2, expanding pipe nipple is installed on rubber sealing drum, and installs corresponding O RunddichtringO；
3, built-in sliding sleeve is installed upper and lower O RunddichtringO, and loads in seal nipple, it is ensured that sealing ring the seal section of process equal
Scribble lubricating oil；
4, being connected on expanding joint by M90 × 1.5mm flat thread by seal nipple, it is ensured that built-in sliding sleeve is placed in the middle, bottom is pressed
On packing rubber；
5, hydraulic line is connected on energy-storage box and seal nipple, fills in energy-storage box top, hydraulic line, seal nipple
Hydraulic oil, fills nitrogen energy accumulating in energy-storage box bottom, it is desirable to nitrogen energy accumulating pressure is 1MPa, now in the effect of reducing piston
Under, top hydraulic fluid pressure is 5MPa and on the sliding sleeve force side that is transferred in seal nipple, and the sectional area of sliding sleeve force side is
191mm2, now sliding sleeve has the downforce of a 300kg and acts on the packing rubber of bottom, thus realizes the pressure of packing rubber
Tightly.When rubber weares and teares, the downforce produced due to top sliding sleeve, packing rubber can squeeze out rubber and fill up the portion being worn
Point, sliding sleeve is the most descending, and therefore the hydraulic oil cavity in seal nipple becomes big, and hydraulic pressure declines therewith, now in energy-storage box
Hydraulic pressure and air pressure no longer balance, air pressure be more than hydraulic pressure, reducing piston with on push away, gas part generation slight expansion, and by
Strong in the compressibility of gas, during moving on slight, air pressure can remain close to constant, thus can guarantee that after moving on piston
Hydraulic pressure is constant, and ensures that its downforce of built-in sliding sleeve in seal nipple is constant, thus realizes the constant voltage self-tightening of packing rubber.
In sum, this apparatus structure is reasonable in design, low cost, installation are easy to connect, good seal performance, is a kind of use
Safe and reliable, the life-span is long, is effectively improved labor productivity, it is ensured that the quality of production, the wellhead polish rod packing box eliminated safe hidden trouble
Self tightening device.The function of self-tightening of packing rubber 5 in wellhead polish rod packing box can be realized, it is not necessary to personnel are carried out frequently by hydraulic pressure
Tour, leakage detection, tighten or change packing rubber operation, the substantial amounts of waste decreasing manpower and man-hour, and can be raw at oil well
The device of well head long term seal is ensured during product.
Claims (10)
1. a fluid pressure type wellhead polish rod packing box Self tightening device, including hydraulic package and the packing that is connected with hydraulic package pipeline
Case assembly, it is characterised in that described hydraulic package includes energy-storage box parts (12) and is placed in the reducing in energy-storage box parts (12)
Piston (13), described packing box assembly includes that the three-dimensional regulation spheroid (8) by arranging with wellhead polish rod (14) concentric upwards depends on
The packing rubber (5) of secondary setting, expanding joint (4), rubber sealing drum (3), seal nipple (2) and built-in sliding sleeve (1), three-dimensional tune
Joint spheroid (8) is detachably threadeded with rubber sealing drum (3), expanding joint (4) and seal nipple (2) successively.
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 1, it is characterised in that described packing
Rubber (5), at least provided with together, is placed between built-in sliding sleeve (1) lower surface and three-dimensional regulation spheroid (8) upper surface, packing rubber
(5) both ends of the surface are fitted and connected with built-in sliding sleeve (1) lower surface and three-dimensional regulation spheroid (8) upper surface respectively, are sheathed on well head
On polished rod (14), it is connected with wellhead polish rod (14) interference fit.
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 1, it is characterised in that described energy storage
Box part (12) by the hydraulic oil cavity (121) being structure as a whole, energy-storage box path section (122), energy-storage box central diameter section (123) and
Nitrogen cavity volume (124) forms.
4. according to a kind of fluid pressure type wellhead polish rod packing box Self tightening device described in claim 1 or 3, it is characterised in that described
Reducing piston (13) is set to big top and small bottom structure, and described its small end of reducing piston (13) is 1:5 with the area ratio of big end,
It is placed in the inner chamber that energy-storage box path section (122) and energy-storage box central diameter section (123) collectively form.
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 3, it is characterised in that connect in sealing
It is respectively equipped with, with hydraulic oil cavity (121) upper end, the liquid being connected with hydraulic line (11) two ends on the sidewall of head (2)
Pressure through hole I (21) and hydraulic pressure through hole II (1211), set on the sidewall of hydraulic oil cavity (121) and nitrogen cavity volume (124) respectively
There are hydraulic oil hand-hole (1212) and nitrogen hand-hole (1241).
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 1, it is characterised in that described three-dimensional
Regulation spheroid (8) seat is located at upper flange (7) and lower flange (10) arranges on the ball seat (9) of composition jointly, fixed by screw rod (6)
Position is fixing to be connected, and lower flange (10) is connected with wellhead tree tree by UPTBG box (101).
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 1, it is characterised in that in built-in cunning
Between outer wall and the inwall of seal nipple inner core (22) of set (1), built-in sliding sleeve boss (111) outer wall is interior with seal nipple (2)
Sliding sleeve O RunddichtringO (112) it is respectively equipped with between wall.
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 4, it is characterised in that live at reducing
Between big end outer wall and energy-storage box central diameter section (123) inwall of plug (13), the small end outer wall of reducing piston (13) is little with energy-storage box
Reducing piston O RunddichtringO (131) it is respectively equipped with between footpath section (122) inwall.
A kind of fluid pressure type wellhead polish rod packing box Self tightening device the most according to claim 1, it is characterised in that connect expanding
Between upper end inwall and the outer wall of rubber sealing drum (3) of head (4), under the middle-end outer wall of expanding joint (4) and seal nipple (2)
It is respectively equipped with rubber sealing drum O RunddichtringO (31) and expanding joint O RunddichtringO (41) between end inwall.
10. according to a kind of fluid pressure type wellhead polish rod packing box Self tightening device described in claim 1-9 any one claim, its
It is characterised by, in the patch that three-dimensional regulation spheroid (8) is corresponding with lower flange (10) with lower sphere seat (92) and lower sphere seat (92)
Spheroid O RunddichtringO (81) and lower sphere seat O RunddichtringO (93) it is respectively equipped with between conjunction face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610540323.9A CN105952409A (en) | 2016-07-11 | 2016-07-11 | Hydraulic wellhead polished rod stuffing box self-tightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610540323.9A CN105952409A (en) | 2016-07-11 | 2016-07-11 | Hydraulic wellhead polished rod stuffing box self-tightening device |
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| Publication Number | Publication Date |
|---|---|
| CN105952409A true CN105952409A (en) | 2016-09-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610540323.9A Pending CN105952409A (en) | 2016-07-11 | 2016-07-11 | Hydraulic wellhead polished rod stuffing box self-tightening device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113686A (en) * | 2018-10-31 | 2019-01-01 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of oil field process units of automatic adjustment |
| CN112943147A (en) * | 2019-11-26 | 2021-06-11 | 中国石油天然气股份有限公司 | Pressure test experimental device |
| CN114753798A (en) * | 2022-05-16 | 2022-07-15 | 帕特恩(大庆)石油科技有限公司 | Multistage sealing protection device for pneumatic isobaric pumping unit well head |
| CN116044337A (en) * | 2023-03-31 | 2023-05-02 | 中海石油(中国)有限公司 | A device and method for plugging and unplugging hot thorns for underwater Christmas trees |
| WO2024086917A1 (en) * | 2022-10-25 | 2024-05-02 | Domino Machine Inc. | Self-aligning stuffing box |
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| CN109113686A (en) * | 2018-10-31 | 2019-01-01 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of oil field process units of automatic adjustment |
| CN112943147A (en) * | 2019-11-26 | 2021-06-11 | 中国石油天然气股份有限公司 | Pressure test experimental device |
| CN114753798A (en) * | 2022-05-16 | 2022-07-15 | 帕特恩(大庆)石油科技有限公司 | Multistage sealing protection device for pneumatic isobaric pumping unit well head |
| CN114753798B (en) * | 2022-05-16 | 2022-10-14 | 帕特恩(大庆)石油科技有限公司 | Multistage sealing protection device for pneumatic isobaric pumping unit well head |
| WO2024086917A1 (en) * | 2022-10-25 | 2024-05-02 | Domino Machine Inc. | Self-aligning stuffing box |
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