CN202531080U - Wellhead sealing hanger - Google Patents

Wellhead sealing hanger Download PDF

Info

Publication number
CN202531080U
CN202531080U CN2012200500507U CN201220050050U CN202531080U CN 202531080 U CN202531080 U CN 202531080U CN 2012200500507 U CN2012200500507 U CN 2012200500507U CN 201220050050 U CN201220050050 U CN 201220050050U CN 202531080 U CN202531080 U CN 202531080U
Authority
CN
China
Prior art keywords
wall
hanger body
main body
hanger
hanger main
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
CN2012200500507U
Other languages
Chinese (zh)
Inventor
童镜树
胡承军
蒙永立
彭辉
雷德荣
姚满仓
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.)
Petrochina Co Ltd
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
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 China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN2012200500507U priority Critical patent/CN202531080U/en
Application granted granted Critical
Publication of CN202531080U publication Critical patent/CN202531080U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a wellhead sealing hanger and is applied to an oil recovery wellhead device in an oil field. An outer wall of a hanger main body is in a three-step cylinder shape; the hanger main body is provided with a central hole; two ends of the hanger main body are respectively provided with oil pipe internal threads; a fluororubber sealing ring is sleeved in an annular groove on the outer wall of the hanger main body; an annular gasket is sleeved on an outer wall of the middle of the hanger main body; 2 to 4 groups of sealing components are sleeved on the outer wall of the middle of the hanger main body; and the sealing components consist of annular retainer rings, metal O-shaped rings and annular gaskets, and a pressing nut is fixed at the lower end of the outer wall of the middle of the hanger main body through a thread. The wellhead sealing hanger has the advantages that the sealing pressure can reach 14MPa, and oil pipes in a three-pipe wellhead device can be effectively sealed between annuluses of the sleeve in the processes of steam injection, production and pressure balance workover treatment by employing a fireflood assisted gravity oil drainage process.

Description

Well head sealed suspension device
Technical field
The utility model relates to oil well mouth device, particularly is used for the sealed suspension device of three pipe thermal recovery well head devices of ultra thick oil horizontal well fireflood assisted gravity drainage technology.
Background technology
Along with the raising that fireflood mechanism is familiar with and the development of fireflood technology, domestic and international increasing oil field is used for viscous crude and the exploitation of all kinds of oil reservoir with the fireflood technology.And the application of fireflood assisted gravity drainage technology still is in the starting stage.At present, the special-purpose wellhead assembly of thick oil horizontal well that on-the-spot shortage still is applicable to this kind technology, and existing wellhead assembly is difficult to satisfy to the fireflood explained hereafter, annotates the needs of vapour, test and snubbing serving.
The utility model content
The purpose of the utility model is: a kind of well head sealed suspension device is provided, can satisfies fireflood assisted gravity drainage technology to annotating the needs of vapour, production, snubbing serving; Satisfy the technological requirement of fireflood assisted gravity drainage.
The technical scheme that the utility model adopts is: well head sealed suspension device comprises viton seal ring, hanger body, ring washer, spacer ring, metal O type circle, annular gasket and clamping nut; The hanger body outer wall is the three ladder cylinder bodily forms, and hanger body has centre bore, and the hanger body two ends have the oil pipe internal thread respectively, can connect oil pipe.It is characterized in that: in hanger body outer wall upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body outer wall, is with viton seal ring; Be with ring washer on the outer wall of hanger body middle part, the last plane of ring washer contacts with hanger body outer wall step surface; On the outer wall of hanger body middle part, be with 2~4 groups of black boies; Described black box is made up of spacer ring, metal O type circle and the annular gasket of annular; There is external screw thread outer wall lower end, hanger body middle part, and screw thread is fixed with clamping nut in outer wall lower end, hanger body middle part.Ring washer and annular gasket adopt ptfe composite to process.
At first earlier viton seal ring is inserted in the rectangular channel at hanger body top from top, then from the bottom with ring washer, spacer ring, metal O type circle and annular gasket, successively be inserted in hanger body, the clamping nut of screwing at last successively.
This well head sealed suspension device adopts the two-stage sealing, and first order encapsulant is selected viton seal ring for use, is installed in the device top rectangular groove.The pad aggregate erection of metal O type circle and ptfe composite is adopted in second level sealing.If first order sealing in use produces seal failure or can not seal fully; When pressure conducts to the secondary seal position; Because what metal O type circle adopted is bottom slot,, can realize laterally interior effective seal so expand behind the pressurized; Packing ring and pad that the ptfe composite that secondary seal adopts is processed are realized vertically interior effective seal.
The beneficial effect of the utility model: the utility model well head sealed suspension device; Through the room pressure leakage test, ability sealing load 14MPa explains that this is reasonable in design; Novel structure; Reliable operation can solve fireflood assisted gravity drainage technology to annotating in vapour, production and the not kill-job workover treatment process the three effective sealings of pipe well mouth device inner oil tube between casing annulus.
Description of drawings
Fig. 1 is the utility model well head sealed suspension device structural profile sketch map.
Among the figure, 1-viton seal ring, 2-hanger body, 3-ring washer, 4-spacer ring, 5-metal O type circle, 6-annular gasket, 7-clamping nut.
The specific embodiment
Embodiment 1: with a well head sealed suspension device is example, and the utility model is done further explain.
Consult Fig. 1.The utility model well head sealed suspension device comprises viton seal ring 1, hanger body 2, ring washer 3, spacer ring 4, metal O type circle 5, annular gasket 6 and clamping nut 7.
Hanger body 2 outer walls are the three ladder cylinder bodily forms; Hanger body 2 has the centre bore of 100mm; Hanger body 2 two ends have API standard oil pipe internal thread respectively, and the internal thread specification is 41/2TBG, can connect the smooth input that oil pipe satisfies blanking plug in the not kill-job well workover process.In hanger body 2 outer walls upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body 2 outer walls, is with viton seal ring 1.Be with ring washer 3 on the hanger body 2 middle part outer walls, the last plane of ring washer 3 contacts with hanger body 2 outer wall step surfaces.On hanger body 2 middle part outer walls, be with three groups of black boies, realize sealing load 14MPa.Described black box is made up of spacer ring 4, metal O type circle 5 and the annular gasket 6 of annular.There is external screw thread outer wall lower end, hanger body 2 middle part, and screw thread is fixed with clamping nut 7 in outer wall lower end, hanger body 2 middle part.Ring washer 3 adopts ptfe composite to process with annular gasket 6.

Claims (2)

1. a well head sealed suspension device comprises viton seal ring (1), hanger body (2), ring washer (3), spacer ring (4), metal O type circle (5), annular gasket (6) and clamping nut (7); Hanger body (2) outer wall is the three ladder cylinder bodily forms; Hanger body (2) has centre bore; Hanger body (2) two ends have the oil pipe internal thread respectively; It is characterized in that: in hanger body (2) outer wall upper end a cross section being arranged is the annular groove of rectangle, in the annular groove of hanger body (2) outer wall, is with viton seal ring (1); Be with ring washer (3) on the outer wall of hanger body (2) middle part, the last plane of ring washer (3) contacts with hanger body (2) outer wall step surface; On the outer wall of hanger body (2) middle part, be with 2~4 groups of black boies; Described black box is made up of spacer ring (4), metal O type circle (5) and the annular gasket (6) of annular; There is external screw thread outer wall lower end, hanger body (2) middle part, and screw thread is fixed with clamping nut (7) in outer wall lower end, hanger body (2) middle part.
2. well head sealed suspension device according to claim 1 is characterized in that: described ring washer (3) and annular gasket (6) adopt ptfe composite to process.
CN2012200500507U 2012-02-16 2012-02-16 Wellhead sealing hanger Expired - Fee Related CN202531080U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012200500507U CN202531080U (en) 2012-02-16 2012-02-16 Wellhead sealing hanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012200500507U CN202531080U (en) 2012-02-16 2012-02-16 Wellhead sealing hanger

Publications (1)

Publication Number Publication Date
CN202531080U true CN202531080U (en) 2012-11-14

Family

ID=47132270

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012200500507U Expired - Fee Related CN202531080U (en) 2012-02-16 2012-02-16 Wellhead sealing hanger

Country Status (1)

Country Link
CN (1) CN202531080U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306628A (en) * 2013-05-22 2013-09-18 新疆力信油田工程技术有限公司 Mechanical recovery wellhead boost protector
CN103615199A (en) * 2013-11-28 2014-03-05 中国石油天然气股份有限公司 Oil extraction processing device for achieving steam injection, oil extraction and temperature-pressure real-time monitoring in shaft of horizontal well with three tubes
CN110905435A (en) * 2019-12-29 2020-03-24 何华 Be used for sealed hanger of oil well head

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103306628A (en) * 2013-05-22 2013-09-18 新疆力信油田工程技术有限公司 Mechanical recovery wellhead boost protector
CN103615199A (en) * 2013-11-28 2014-03-05 中国石油天然气股份有限公司 Oil extraction processing device for achieving steam injection, oil extraction and temperature-pressure real-time monitoring in shaft of horizontal well with three tubes
CN110905435A (en) * 2019-12-29 2020-03-24 何华 Be used for sealed hanger of oil well head
CN110905435B (en) * 2019-12-29 2021-10-01 山东健源石油工程技术有限公司 Be used for sealed hanger of oil well head

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
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: 20121114

Termination date: 20210216