CN108561097A - A kind of 3U types multistage all-metal sealing mandrel type hanger - Google Patents
A kind of 3U types multistage all-metal sealing mandrel type hanger Download PDFInfo
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- CN108561097A CN108561097A CN201810196776.3A CN201810196776A CN108561097A CN 108561097 A CN108561097 A CN 108561097A CN 201810196776 A CN201810196776 A CN 201810196776A CN 108561097 A CN108561097 A CN 108561097A
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 239000002184 metal Substances 0.000 title claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 69
- 238000012856 packing Methods 0.000 claims description 31
- 238000012360 testing method Methods 0.000 claims description 11
- 230000000703 anti-shock Effects 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 229920001971 elastomer Polymers 0.000 abstract description 21
- 239000005060 rubber Substances 0.000 abstract description 19
- 230000032683 aging Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000002411 adverse Effects 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008569 process 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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
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- 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 present invention discloses a kind of 3U types multistage all-metal sealing mandrel type hanger, including the single U-shaped metal sealing component in mandrel, four-way, the double-U-shaped metal sealing component in top, lower part；The mandrel is equipped with upper circular cone step surface, cylinder shoulder, lower circular cone step surface from top to bottom, and the four-way upper inside wall is equipped with circular conical surface, sloping platform terrace is equipped in the middle part of inner wall；The mandrel is vertically arranged in four-way, and upper conical gap is formed between the upper circular cone step surface and circular conical surface, inferior pyramidal gap is formed between the lower circular cone step surface and sloping platform terrace, singly U-shaped metal sealing component is arranged in inferior pyramidal gap for the lower part.The present invention is not related to rubber seal, pressure-bearing, the ability of anticorrosion, ageing of rubber failure under a variety of adverse circumstances can be improved, greatly improve service life, ensure the reliability of casing head hanger sealing annular space, it prevents different grades of pressure from ganging up and causes security risk to the pressure-bearing of casing head and bunch tube, jeopardize the safety in production of well head.
Description
Technical field
The present invention relates to oil/gas well drilling-production equipment technical field, especially a kind of 3U types multistage all-metal sealing mandrel type is outstanding
Hanging device.
Background technology
Tubing hanger and mandrel type casing hanger have essentially identical sealing structure and sealing mechanism, most sealing structures
With sealing element using the mixed structure of metal compaction sealing and elastic rubber sealing, this kind of sealing structure often has leakage, such as
Fruit encounters superelevation hot-well rubber seal and is quickly invalidated, and risk source has：Metal sealing does not excite really after installation, and pressure testing is closed
Lattice are that elastic rubber sealing is worked, after a long time ageing of rubber or be corroded erosion medium resistance or chance high temperature well rapid failure etc.,
Loss of seal sexuality, existing structure cannot differentiate that metal sealing or elastic rubber sealing work when installing, scene peace
When dress, to have partially by annular preventer, the endoporus of ram preventer group, this life of derrick crown during the hanging hanging device of decentralization seat
It moves, cannot differentiate disconnected metal sealing with the presence or absence of damaging or hanging damage, there is " blind seat " situation, yield spread sealing mechanism requires behaviour
Make strictly, if inspection of hermetic seal is unqualified after seat is hung, it is necessary to it will check and replace after the related bunch tube entirety lift-off well head of hanger,
If cement is returned to wellhead ground and solidified or casing is too heavy, integral installation operation will be caused to fail when above putting forward difficulty, after leaving
Suffer from, there is also upper potential risks for tubing hanger, and the consequence of seal failure is more serious than casing hanger, may cause annular space band
It presses and causes security risk to well head, be forced well killing change metal sealing.
Discovery is investigated to domestic and international related patents：Patent CN201520993567.3, patent
The chamber that is screwed on CN201520732023.1 reserves position with casing and is screwed on, and hermetic unit, has continued to use traditional double O-shaped rubbers
Glue sealing ring and the design of bimetallic (spring cone) seal circle, have reliable sealing performance, but sealing cycle is short, corrosion-and high-temp-resistant and can
It is poor by property；Patent CN201510167051.8 detects sealing reliability by the pressure testing hole on casing head ontology, in case of sealing is lost
Effect can utilize extracting tool to replace metal seal, since hermetic unit uses O-shaped rubber ring as main seal circle, necessarily
There are the defects of aging and failure；Patent CN201520424020.1 upper layer casing heads or tubing head are without being changed to slips suspension
Structure type used by device is mating, although being conveniently replaceable hanger, seat is difficult to judge when hanging and observe, lower seal portion
Position cannot avoid the blind seat in lower seal position, still rubber parts be leaned on to realize sealing, short life and poor reliability；Patent
CN201420360999.6, CN201420327658.9, patent CN201220739199.6 carry out metal sealing and BT circles are noted
The combined sealing structure of fat, rubber seal are all made of " high saturation hydrogenated nitrile-butadiene rubber (HNBR) ", are allowed to be more suitable in complexity
It is used on hole condition and high temperature and pressure oil/gas well, although ensureing sealing reliability in a short time, long-term operation still has rubber
Part fails and the defect of aging；Patent CN201110143409.5, although patent CN200920255438.9 solves conventional suspension
The rubber seal of device is easy aging and difficult the problem of replacing, and can not avoid the problem that generating blind seat exist and damage or hang damage
Risk.
These existing patents and product sealing position unavoidably need to use rubber seal, are easy to happen rubber parts
Aging, under extraneous various adverse circumstances, the service life of rubber parts can be substantially reduced the reliable of rubber parts by extreme influence
Property, it cannot be guaranteed that the safety in permanent seal and later stage, in addition when hanger of the decentralization with sealing structure, hanger seat is hung on
Four-way stepped locations can form setting blind area, it is difficult to judge that damage is damaged or hung to lower seal, and be not easy to replace sealing group
Part brings security risk for ultra-deep, super-pressure, superelevation hot-well and the completion of high sulfur crude gas well, oil recovery, gas production operation.
Invention content
The present invention is primarily to overcome the defect of above-mentioned problem and existing sealing structure, and guarantee oil-gas mining operation is forever
Long property safety, prevents later stage sealing leak failure accidents, provides a kind of 3U types multistage all-metal sealing mandrel type hanger, this is outstanding
Hanging device can be used in long-term recovery process, and well head and production tree have highest safe clearance, more as multistage barrier
Under grade all-metal sealing barrier protection effect, production formations fluid can not possibly directly be leaked in atmospheric environment.
The present invention solves the technical solution that above-mentioned technical problem is provided：A kind of 3U types multistage all-metal sealing mandrel type
Hanger, including the single U-shaped metal sealing component in mandrel, four-way, the double-U-shaped metal sealing component in top, lower part；
The mandrel is equipped with upper circular cone step surface, cylinder shoulder, lower circular cone step surface from top to bottom, on the four-way inner wall
Portion is equipped with circular conical surface, and sloping platform terrace is equipped in the middle part of inner wall；
The mandrel is vertically arranged in four-way, and upper conical gap is formed between the upper circular cone step surface and circular conical surface,
Inferior pyramidal gap is formed between the lower circular cone step surface and sloping platform terrace, the double-U-shaped metal sealing component setting in top exists
In upper conical gap, singly U-shaped metal sealing component is arranged in inferior pyramidal gap for the lower part；
The double-U-shaped metal sealing component in top include screw-type pretightning force briquetting, upper apical ring, double-U-shaped metallic packing ring,
Upper support ring, the upper support ring upper end are embedded in the lower part U-shaped opening of double-U-shaped metallic packing ring, and lower end is pressed in cylinder shoulder
Upper surface on, the upper apical ring lower end is embedded in the top U-shaped opening of double-U-shaped metallic packing ring, the screw-type pretightning force
Briquetting connect with mandrel thread and compresses upper apical ring upper end；
Singly U-shaped metal sealing component includes lower apical ring, single U-shaped metallic packing ring, lower support ring, fixed ring for the lower part,
The lower apical ring upper end and the lower end of cylinder shoulder axially engage, in the U-shaped opening of the single U-shaped metallic packing ring of lower end insertion, institute
It states lower support ring upper end with single U-shaped metallic packing ring lower end plane support to coordinate, the fixed ring connect and props up with mandrel thread
The lower support ring of support.
Further, having gap between the lower support ring and the lower circular cone step surface of mandrel.
Further, also there is gap between the lower apical ring lower end and the U-shaped opening of single U-shaped metallic packing ring.
Further, the sealing surface of the double-U-shaped metallic packing ring, single U-shaped metallic packing ring U-shaped opening is ellipse
The shape conical surface.
Further, surfacing has soft metal layer on the ellipse conical surface.
Further, being disposed with manual flat valve, instrument flange, manual platform at left and right sides of the four-way
Valve, pressure gauge flange, Autoclave plugs, the instrument flange are equipped with straight-through stop valve, anti-shock pressure meter.
Further, the instrument flange is equipped with plug.
Further, the pressure gauge flange is equipped with Autoclave grease pouring valves.
Further, the top of the four-way is radially provided with top pressure testing hole and lower part pressure testing hole.
Further, the top of the four-way is radially provided with jackscrew component, jackscrew element end inclined-plane with it is upper
The inclined-plane cooperation of apical ring compresses.
The beneficial effects of the invention are as follows：
1) structure of the invention is multi-level metal sealing structure, is not related to rubber seal, a variety of adverse circumstances can be improved
Under pressure-bearing, the ability of anticorrosion, ageing of rubber failure, greatly improve service life, ensure that casing head hanger seals annular space
Reliability, prevent different grades of pressure from ganging up and cause security risk to the pressure-bearing of casing head and bunch tube, jeopardize well head
Safety in production；
2) compared with existing hanger structure, directly pressure ring is utilized to position upper taper ring, reduces drilling and reaming for location hole
Technique, positioning of the shop bolt to lower seal metal sealing position reduce the porous location and installation technique of four-way circumferential direction, scene
Operational suitability：Seal operation examines approval, recoverability, will not increase the difficulty disassembled and installed after well cementation；
3) U-shaped metal sealing seals for composite metal, and matrix is high intensity, the certain thickness soft gold of one layer of surface surfacing
Belong to, excites soft metal Plastic Flow to realize sealing with base elastomer deformation by axial pressure and bunch tube Gravitative Loads；
4) the multi-stage sealed mandrel type hanger of the all-metal is for ultra-deep, super-pressure, superhigh temperature and high sulfur crude gas well
Casing head combines；Sealing principle and structure have innovation, by a large amount of theoretical research and a variety of sealing structure faces (it is linear, sinusoidal,
Parabola and its ellipse) contact distribution the research of Fem Computer analogue simulation, received optimal, reliable whole
Sealing structure position and its structure size pass through the meter to linear, sinusoidal, parabola and its oval sealing surface contact pressure distribution
Calculation machine analogue simulation result of study obtains：The contact depth and width of oval sealing structure curved surface are larger, contact distribution
Uniformly, it is sufficient to long-term to realize that sealing, reliability are high；
5) present invention compared with existing hanger structure, sealing element greatly reduces in sealing structure, simplify processing and
Assembly technology reduces the process-cycle, and can assemble slips hanger under emergency condition, and replaces conveniently, and exploitativeness is strong,
Utilization easy to spread.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 2 is enlarged drawing at a kind of I of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 3 is enlarged drawing at a kind of I I of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 4 is enlarged drawing at a kind of I I I of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 5 is a kind of K-K sectional views of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 6 is a kind of upper metal seal assembly graphics of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 7 is a kind of lower metal seal assembly graphics of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 8 is a kind of mandrel graphics of 3U types multistage all-metal sealing mandrel type hanger；
Fig. 9 is a kind of double-U-shaped metallic packing ring of 3U types multistage all-metal sealing mandrel type hanger；
Figure 10 is a kind of U-shaped metallic packing ring of list of 3U types multistage all-metal sealing mandrel type hanger.
As shown in the figure：1- mandrels, 2- four-ways, 3- screw-type pretightning forces briquetting, the upper apical rings of 4-, the double-U-shaped metallic packing rings of 5-,
Support ring under the mono- U-shaped metallic packing ring of apical ring, 8-, 9- under the upper support rings of 6-, 7-, 10- fixed rings, the tops 11- pressure testing hole 11,
The lower parts 12- pressure testing hole, 13-Autoclave plugs, 14- pressure gauges flange, 15-Autoclave grease pouring valves, the cut-off of 16- through types
Valve, 17- anti-shock pressure meters, 18- manual flat valves, 19- plugs, 20- jackscrew components.
Specific implementation mode
Further description is done to the present invention with reference to embodiment and attached drawing.
As shown in Figure 1, the present invention a kind of 3U types multistage all-metal sealing mandrel type hanger, including mandrel 1, four-way 2,
The single U-shaped metal sealing component in the double-U-shaped metal sealing component in top, lower part；1 lower part of the mandrel is threaded, and is covered with lower part
Tubing string connects, and mandrel 1 and four-way 2 are respectively by the metal material processing of varying strength, and the intensity of mandrel 1 is more than four-way 2；
The mandrel 1 is equipped with upper circular cone step surface, cylinder shoulder, lower circular cone step surface, 2 inner wall of the four-way from top to bottom
Top is equipped with circular conical surface, and sloping platform terrace is equipped in the middle part of inner wall；
The mandrel 1 is vertically arranged in four-way 2, formed between the upper circular cone step surface and circular conical surface it is upper conical between
Gap, angle of taper c form inferior pyramidal gap, the double-U-shaped gold in top between the lower circular cone step surface and sloping platform terrace
Belong to seal assembly to be arranged in upper conical gap, singly U-shaped metal sealing component is arranged in inferior pyramidal gap for the lower part；
The double-U-shaped metal sealing component in top includes screw-type pretightning force briquetting 3, upper apical ring 4, double-U-shaped metal sealing
Ring 5, upper support ring 6, the upper conical gap are matched with 5 outer surface of double-U-shaped metallic packing ring, 6 upper end of upper support ring
In the lower part U-shaped opening of embedded double-U-shaped metallic packing ring 5, lower end is pressed on the upper surface of cylinder shoulder, under the upper apical ring 4
In the top U-shaped opening for holding embedded double-U-shaped metallic packing ring 5, the screw-type pretightning force briquetting 3 is threadedly coupled simultaneously with mandrel 1
4 upper end of apical ring in compression, to which upper apical ring 4, double-U-shaped metallic packing ring 5, upper support ring 6 are pressed on successively on cylinder shoulder；
Singly U-shaped metal sealing component includes lower apical ring 7, single U-shaped metallic packing ring 8, lower support ring 9, fixes for the lower part
Ring 10,7 upper end of lower apical ring and the lower end of cylinder shoulder axially engage, and are that 7 upper end of lower apical ring is withstood under cylinder shoulder
On end face, the lower end of lower apical ring 7 is embedded in the U-shaped opening of single U-shaped metallic packing ring 8, and 9 upper end of lower support ring and list are U-shaped
The support cooperation of 8 lower end plane of metallic packing ring, the fixed ring 10 are threadedly coupled with mandrel 1 and support lower support ring 9, and with core
Axis 1 is transferred, and support ring 9 is then descended to be located on the sloping platform terrace of four-way 2.
In order to ensure that safety and reliability in sealing contact, preferred embodiment are the lower support ring 9 and mandrel
There is gap b, between 7 lower end of lower apical ring and the U-shaped opening of single U-shaped metallic packing ring 8 between 1 lower circular cone step surface
With gap a.
The sealing surface of the U-shaped opening of the double-U-shaped metallic packing ring 5, single U-shaped metallic packing ring 8 is the oval conical surface,
Surfacing has soft metal layer on the ellipse conical surface.Soft metal Plastic Flow is excited by rotary presser and bunch tube Gravitative Loads
It is deformed with base elastomer and realizes sealing.
In the present embodiment：2 left and right sides of the four-way is disposed with manual flat valve 18, instrument flange, puts down manually
Plate valve 18, pressure gauge flange 14, instrument flange described in Autoclave plugs 13 are equipped with right-angle type shut-off valve 16, antidetonation pressure
Table 17, the instrument flange are equipped with plug 19, and the manual flat valve 18 is equipped with Autoclave grease pouring valves 15.
Be threaded screw thread in 2 middle part side outlet of four-way, wherein Autoclave plugs 13, pressure gauge flange 14,
Autoclave grease pouring valves 15, straight-through stop valve 16, anti-shock pressure meter 17, manual flat valve 18 are in the symmetrical cloth in 2 both ends of four-way
It sets, four-way 2 is connect with manual flat valve 18, and the manual flat valve 18, instrument flange are processed by sulfur resistive material, anti-shock pressure meter
17 and straight-through stop valve 16 be connected through a screw thread with instrument flange, anti-shock pressure meter 17 is connected to the spiral shell of straight-through stop valve 16
In pit, Autoclave grease pouring valves 15 are connected through a screw thread with manual flat valve 18, and spare plug hole is provided in instrument flange,
Plug hole is equipped with plug 19.
The Autoclave plugs 13 that wherein four-way 2 or so is held select to open and close according to construction requirement, anti-by observing
It shakes in 17 pressure change manual flat valve 18 of pressure gauge and leaks situation to judge its reliability.2 left and right end portions of four-way point can change the outfit
External open flow or production flow line are connected after corresponding flange.
For pressure testing and detachable maintaining seal assembly, preferred embodiment is that the top of the four-way 2 is radially provided with
Portion pressure testing hole 11 and lower part pressure testing hole 12.
Preferred embodiment is in the present embodiment, and the top of the four-way 2 is radially provided with jackscrew component 20, the top
The inclined-plane cooperation of silk 20 terminal slope of component and upper apical ring 4 compresses, and can prevent excessive in well cementing process middle and lower part pressure, causes
Stem seal structure is altered on the whole.
The above is not intended to limit the present invention in any form, although the present invention is taken off by above-described embodiment
Show, however, it is not intended to limit the invention, any person skilled in the art, is not departing from technical solution of the present invention range
It is interior, when the technology contents using the disclosure above make a little equivalent embodiments changed or be modified to equivalent variations, as long as being not
Be detached from technical solution of the present invention content, according to the technical essence of the invention to made by above example it is any it is simple modification,
Equivalent variations and modification, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of 3U types multistage all-metal sealing mandrel type hanger, which is characterized in that including mandrel (1), four-way (2), top
The single U-shaped metal sealing component in double-U-shaped metal sealing component, lower part；
The mandrel (1) is equipped with upper circular cone step surface, cylinder shoulder, lower circular cone step surface, four-way (2) inner wall from top to bottom
Top is equipped with circular conical surface, and sloping platform terrace is equipped in the middle part of inner wall；
The mandrel (1) is vertically arranged in four-way (2), formed between the upper circular cone step surface and circular conical surface it is upper conical between
Gap forms inferior pyramidal gap, the double-U-shaped metal sealing component setting in top between the lower circular cone step surface and sloping platform terrace
In upper conical gap, singly U-shaped metal sealing component is arranged in inferior pyramidal gap for the lower part；
The double-U-shaped metal sealing component in top includes screw-type pretightning force briquetting (3), upper apical ring (4), double-U-shaped metal sealing
Ring (5), upper support ring (6), upper support ring (6) upper end are embedded in the lower part U-shaped opening of double-U-shaped metallic packing ring (5), under
For side pressure on the upper surface of cylinder shoulder, upper apical ring (4) lower end is embedded in the top U-shaped opening of double-U-shaped metallic packing ring (5)
Interior, the screw-type pretightning force briquetting (3) is threadedly coupled with mandrel (1) and compresses upper apical ring (4) upper end；
Singly U-shaped metal sealing component includes lower apical ring (7), single U-shaped metallic packing ring (8), lower support ring (9), consolidates for the lower part
Determine ring (10), lower apical ring (7) upper end and the lower end of cylinder shoulder axially engage, the single U-shaped metallic packing ring (8) of lower end insertion
U-shaped opening in, lower support ring (9) upper end coordinates with single U-shaped metallic packing ring (8) lower end plane support, the fixation
Ring (10) is threadedly coupled with mandrel (1) and supports lower support ring (9).
2. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 1, which is characterized in that under described
Gap is equipped between support ring (9) and the lower circular cone step surface of mandrel (1).
3. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 2, which is characterized in that under described
It also is provided with gap between apical ring (7) lower end and the U-shaped opening of single U-shaped metallic packing ring (8).
4. being existed according to a kind of any 3U types multistage all-metal sealing mandrel type hanger, feature in claim 1-3
In the double-U-shaped metallic packing ring (5), singly the sealing surface of U-shaped metallic packing ring (8) U-shaped opening is the oval conical surface.
5. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 4, which is characterized in that described ellipse
Surfacing has soft metal layer on the round conical surface.
6. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 1 or 5, which is characterized in that institute
It states and is disposed with manual flat valve (18), instrument flange, manual flat valve (18), pressure gauge method at left and right sides of four-way (2)
Blue (14), Autoclave plugs (13), the instrument flange are equipped with straight-through stop valve (16), anti-shock pressure meter (17).
7. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 6, which is characterized in that the instrument
Table flange is equipped with plug (19).
8. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 6, which is characterized in that the pressure
Power table flange (14) is equipped with Autoclave grease pouring valves (15).
9. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 1, which is characterized in that described four
The top of logical (2) is radially provided with top pressure testing hole (11) and lower part pressure testing hole (12).
10. a kind of 3U types multistage all-metal sealing mandrel type hanger according to claim 1, which is characterized in that described
The top of four-way (2) is radially provided with jackscrew component (20), the inclined-plane of jackscrew component (20) terminal slope and upper apical ring (4)
Cooperation compresses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810196776.3A CN108561097A (en) | 2018-03-10 | 2018-03-10 | A kind of 3U types multistage all-metal sealing mandrel type hanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810196776.3A CN108561097A (en) | 2018-03-10 | 2018-03-10 | A kind of 3U types multistage all-metal sealing mandrel type hanger |
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| CN108561097A true CN108561097A (en) | 2018-09-21 |
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| CN201810196776.3A Pending CN108561097A (en) | 2018-03-10 | 2018-03-10 | A kind of 3U types multistage all-metal sealing mandrel type hanger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552649A (en) * | 2019-08-27 | 2019-12-10 | 重庆新泰机械有限责任公司 | Metal sealing structure with curved surface |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN114112235A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Mandrel type casing hanger testing device |
| CN116291291A (en) * | 2023-05-10 | 2023-06-23 | 建湖县鸿达阀门管件有限公司 | 175MPa three-layer ultrahigh pressure casing head |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS58156690A (en) * | 1982-02-16 | 1983-09-17 | スミス・インタ−ナシヨナル・インコ−ポレ−テツド | Well head system in sea |
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| CN207944909U (en) * | 2018-03-10 | 2018-10-09 | 重庆新泰机械有限责任公司 | A kind of 3U types multistage all-metal sealing mandrel type hanger |
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| CN204060602U (en) * | 2014-07-01 | 2014-12-31 | 中国石油集团渤海石油装备制造有限公司 | A kind of bimetallic (spring cone) seal formula casing head |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110552649A (en) * | 2019-08-27 | 2019-12-10 | 重庆新泰机械有限责任公司 | Metal sealing structure with curved surface |
| CN114112235A (en) * | 2020-08-31 | 2022-03-01 | 中国石油天然气股份有限公司 | Mandrel type casing hanger testing device |
| CN113187425A (en) * | 2021-04-26 | 2021-07-30 | 建湖县鸿达阀门管件有限公司 | Ultrahigh-pressure ultrahigh-temperature high-sulfur-resistance HH-grade gas production wellhead device |
| CN116291291A (en) * | 2023-05-10 | 2023-06-23 | 建湖县鸿达阀门管件有限公司 | 175MPa three-layer ultrahigh pressure casing head |
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