CN207863906U - A kind of inserted metal sealing mandrel type hanger of step - Google Patents

A kind of inserted metal sealing mandrel type hanger of step Download PDF

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Publication number
CN207863906U
CN207863906U CN201820137987.5U CN201820137987U CN207863906U CN 207863906 U CN207863906 U CN 207863906U CN 201820137987 U CN201820137987 U CN 201820137987U CN 207863906 U CN207863906 U CN 207863906U
Authority
CN
China
Prior art keywords
ring
way
sealing
mandrel
metal sealing
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.)
Expired - Fee Related
Application number
CN201820137987.5U
Other languages
Chinese (zh)
Inventor
王峰
练章华
刘洋
冯猛
张琎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southwest Petroleum University
Original Assignee
Southwest Petroleum University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Southwest Petroleum University filed Critical Southwest Petroleum University
Priority to CN201820137987.5U priority Critical patent/CN207863906U/en
Application granted granted Critical
Publication of CN207863906U publication Critical patent/CN207863906U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a kind of inserted metal sealing mandrel type hanger of step, it is designed for seal failure caused by solving the problems, such as rubber seal aging or the erosion medium resistance that is corroded, lower part four-way junction of casing is bolted in upper flange, hanger body passes through internal thread connecting sleeve, it is set with by hanging screw outside hanger body, the upper metal sealing of cone-shape metallic leak-proof ring and jackscrew composition, the step surface of mandrel and four-way is machined with annular tooth, inserted tooth type step is under the action of bunch tube weight by annular tooth embedding sealing gasket ring, realize lower metal sealing, cone-shape metallic leak-proof annular strain is excited by hanging screw, two conical surfaces are made to generate interference fit, realize cone-shape metallic leak-proof, annular space between deformable body sealing sleeve pipe and four-way.Seal failure caused by this hanger can solve the problems, such as in gas well at HTHP due to rubber seal aging or corrosive medium corrode, has corrosion resistance strong, sealing effect is good, advantage with long service life.

Description

A kind of inserted metal sealing mandrel type hanger of step
Technical field
The utility model belongs to oil drilling and extracting equipment technical field, and it is outstanding to be related to a kind of inserted metal sealing mandrel type of step Hanging device.
Background technology
With the development of petroleum exploration and development, suffer from that high temperature and pressure oil/gas well is more and more, the requirement to wellhead assembly Also it increasingly improves.Common casing hang is mainly mandrel type and slip-type, and sealing system is not all avoided that using rubber Glue seals;The case where being exploited for a long time containing acid medium (hydrogen sulfide) gas recovery well is encountered, building rubber compound sealing system is easily corroded And leak point is generated, the remedial efforts after seal failure are difficult, some can not even be remedied, can only kill-job, closing well.
Utility model content
The purpose of this utility model is to provide a kind of inserted metal sealing mandrel type hangers of step, can solve rubber Seal failure problem caused by glue seal aging or the erosion medium resistance that is corroded, the wellhead sealing for meeting high temperature and pressure oil/gas well are wanted It asks.
The specific technical solution of the utility model is:A kind of inserted metal sealing mandrel type hanger of step, including spiral shell Bolt, nut, mandrel, upper flange, octagonal sealing ring, hanging screw, cone-shape metallic leak-proof ring, jackscrew, metallic packing ring, positioning Ring, deformable body, metal gasket ring, lower part fixing bolt, casing, four-way, which is characterized in that upper flange 4 passes through bolt 1 and nut 2 It connect with four-way 15, and is sealed by octagonal sealing ring 5, cone-shape metallic leak-proof ring 7 is connected with hanging screw 6, and together Mounted on the spatial position of mandrel 3 and four-way 15,10 fixing seal gasket ring 9 of locating ring, and with mandrel 3 and gasket ring 9 Sit the step surface for being placed on four-way 15.
The step surface of this hanger mandrel and four-way is machined with annular tooth, by annular tooth under the action of bunch tube weight Embedding sealing gasket ring realizes that lower metal sealing, extra bunch tube weight transmitting to four-way ensure that lower metal sealing will not It fails because of bunch tube weight;Cone-shape metallic leak-proof ring is connected with hanging screw, and is installed along with the sky of mandrel and four-way Between position, two conical surfaces of cone-shape metallic leak-proof ring generate interference fit with mandrel and four-way, realize upper metal sealing, and by Jackscrew fixes taper metallic packing ring;Deformable body generates deformation under the action of bunch tube weight, plays sealing sleeve pipe and four The effect of annular space between logical.
The utility model has the beneficial effects that:This hanger can solve in high temperature and pressure oil/gas well because of rubber seal aging or The erosion medium resistance that is corroded and caused by seal failure problem, have corrosion resistance it is strong, sealing effect is good, with long service life excellent Point.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the inserted metal sealing mandrel type hanger structural schematic diagram of the utility model step.
Fig. 2 is A partial enlarged views in position in Fig. 1.
Fig. 3 is B partial enlarged views in position in Fig. 1.
Figure label:1- bolts, 2- nuts, 3- mandrels, 4- upper flanges, 5- illiciumverums sealing ring, 6- hanging screws, 7- tapers Metallic packing ring, 8- jackscrews, 9- gasket rings, 10- locating rings, 11- deformable bodies, 12- metals gasket ring, the lower parts 13- fixing bolt, 14- casings, 15- four-ways.
Specific implementation mode
The additional aspect of the utility model and advantage will be set forth in part in the description, these will be from following description In become apparent, or recognized by the practice of the utility model.
As shown in Figure 1, Figure 2, Figure 3 shows, the inserted metal sealing mandrel type hanger of a kind of step, it is characterized in that including bolt 1, nut 2, mandrel 3, upper flange 4, octagonal sealing ring 5, hanging screw 6, cone-shape metallic leak-proof ring 7, jackscrew 8, gasket ring 9, Locating ring 10, deformable body 11, metal gasket ring 12, lower part fixing bolt 13, casing 14, four-way 15:
A kind of locating ring 10 fixing seal gasket ring 9 of the inserted metal sealing mandrel type hanger of step, and with core Axis 3 and gasket ring 9 sit the step surface for being placed on four-way 15 together.Cone-shape metallic leak-proof ring 7 is connected with hanging screw 6, and one It rises mounted on the spatial position of mandrel 3 and four-way 15.Upper flange 4 is connect by bolt 1 and nut 2 with four-way 15, and by illiciumverum Sealing ring 5 is sealed.
A kind of mandrel 3 of the inserted metal sealing mandrel type hanger of step and the step surface of four-way 15 are machined with Annular tooth realizes lower metal sealing, extra casing by annular tooth embedding sealing gasket ring 9 under the action of bunch tube weight Weight transmitting go here and there to four-way 15, ensures that lower metal sealing will not fail because of bunch tube weight;Cone-shape metallic leak-proof ring 7 with it is outstanding Hang screw 6 to be connected, and be installed along with the spatial position of mandrel 3 and four-way 15, two conical surfaces of cone-shape metallic leak-proof ring 7 and Mandrel 3 and four-way 15 generate interference fit, realize upper metal sealing, and fix taper metallic packing ring 7 by jackscrew 8;It is variable Body 11 generates deformation under the action of bunch tube weight, plays the role of annular space between sealing sleeve pipe 14 and four-way 15.
It should be noted last that:Above example is only to illustrate and unrestricted the technical solution of the utility model, to the greatest extent Pipe is described in detail the utility model with reference to above-described embodiment, it will be apparent to an ordinarily skilled person in the art that:Still The utility model can be modified or replaced equivalently, without departing from any modification of the spirit and scope of the utility model Or part is replaced, and should all be covered in the right of the utility model.

Claims (4)

1. a kind of inserted metal sealing mandrel type hanger of step, it is characterized in that including bolt (1), nut (2), mandrel (3), Upper flange (4), hanging screw (6), cone-shape metallic leak-proof ring (7), jackscrew (8), gasket ring (9), is determined at octagonal sealing ring (5) Position ring (10), deformable body (11), metal gasket ring (12), lower part fixing bolt (13), casing (14), four-way (15), feature exists In upper flange 4 is connect by bolt 1 and nut 2 with four-way 15, and is sealed by octagonal sealing ring 5, cone-shape metallic leak-proof ring 7 are connected with hanging screw 6, and are installed along with the spatial position of mandrel 3 and four-way 15,10 fixing seal gasket ring 9 of locating ring, And the step surface for being placed on four-way 15 is sat with mandrel 3 and gasket ring 9.
2. the inserted metal sealing mandrel type hanger of a kind of step according to claim 1, it is characterised in that:Taper gold Two conical surfaces and mandrel (3) and four-way (15) for belonging to sealing ring (7) generate interference fit, realize upper metal sealing, and by pushing up The fixed taper metallic packing ring (7) of silk (8).
3. the inserted metal sealing mandrel type hanger of a kind of step according to claim 1, it is characterised in that:The core The step surface of axis (3) and four-way (15) is machined with annular tooth.
4. the inserted metal sealing mandrel type hanger of a kind of step according to claim 1, it is characterised in that:It is described can Deformable body (11) generates deformation under the action of bunch tube weight, plays the work of annular space between sealing sleeve pipe (14) and four-way (15) With.
CN201820137987.5U 2018-01-26 2018-01-26 A kind of inserted metal sealing mandrel type hanger of step Expired - Fee Related CN207863906U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820137987.5U CN207863906U (en) 2018-01-26 2018-01-26 A kind of inserted metal sealing mandrel type hanger of step

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820137987.5U CN207863906U (en) 2018-01-26 2018-01-26 A kind of inserted metal sealing mandrel type hanger of step

Publications (1)

Publication Number Publication Date
CN207863906U true CN207863906U (en) 2018-09-14

Family

ID=63458982

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820137987.5U Expired - Fee Related CN207863906U (en) 2018-01-26 2018-01-26 A kind of inserted metal sealing mandrel type hanger of step

Country Status (1)

Country Link
CN (1) CN207863906U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112878942A (en) * 2021-02-01 2021-06-01 德州联合石油科技股份有限公司 Self-excitation all-metal sealing high-pressure wellhead device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112878942A (en) * 2021-02-01 2021-06-01 德州联合石油科技股份有限公司 Self-excitation all-metal sealing high-pressure wellhead device
CN112878942B (en) * 2021-02-01 2021-09-21 德州联合石油科技股份有限公司 Self-excitation all-metal sealing high-pressure wellhead device

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180914

Termination date: 20190126