CN202100220U - Oil pipe and casing hanger with controllable sealing performance - Google Patents

Oil pipe and casing hanger with controllable sealing performance Download PDF

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Publication number
CN202100220U
CN202100220U CN2011201852778U CN201120185277U CN202100220U CN 202100220 U CN202100220 U CN 202100220U CN 2011201852778 U CN2011201852778 U CN 2011201852778U CN 201120185277 U CN201120185277 U CN 201120185277U CN 202100220 U CN202100220 U CN 202100220U
Authority
CN
China
Prior art keywords
ring
metallic packing
conical
hanger
oil pipe
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
CN2011201852778U
Other languages
Chinese (zh)
Inventor
李宏
梁洪卫
阚玲玲
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.)
Northeast Petroleum University
Original Assignee
Northeast 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 Northeast Petroleum University filed Critical Northeast Petroleum University
Priority to CN2011201852778U priority Critical patent/CN202100220U/en
Application granted granted Critical
Publication of CN202100220U publication Critical patent/CN202100220U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an oil pipe and casing hanger with controllable sealing performance, which comprises a hanger main body, a metal sealing ring assembly and a release-preventive nut. The metal sealing ring assembly comprises an upper conical ring, an upper metal sealing ring, a lower metal sealing ring, a packer ring, an O-shaped sealing ring and a lower conical ring, annular concave conical grooves are respectively processed on the upper surface and the lower surface of each metal sealing ring, cone angles of the annular concave conical grooves are 23 degrees, and the metal sealing ring assembly is coaxially sleeved in an annular groove on the outer wall of the hanger main body. The oil pipe and casing hanger solves problems that sealing rings of an existing hanger need to be regularly replaced, and sealing performance of the existing hanger is poor. The hanger adopts the double metal sealing rings with conical expansion type structures, sealing performances of the sealing rings and a four-way inner cavity of an oil pipe or casing are strengthened, the service life is long, leakage of a wellhead due to ageing and damage of sealing components can be assuredly avoided after the wellhead is used for a long time, and production operation cost of an oilfield is saved.

Description

Oil pipe, casing hanger that sealing performance is controlled
Technical field
The utility model Wataru and one kind of oil injection gas, oil with tubing, casing hanger.
Background technology
At present, the oil pipe of oil-field flooding, gas injection, gas production, wellhead for production and casing hanger all are to adopt the nonmetal master of being sealed into, and nonmetal encapsulant is prone to aging, and application life is short, and antiseptic property is poor.Must regularly change the nonmetal sealing ring in sealing position, must use oversized mobile device and engineering truck but change operation, operating procedure is complicated, and production operation efficiency is low, has wasted a large amount of financial resources and material resources simultaneously.
Summary of the invention
In order to overcome the deficiency of oil pipe in the background technology, casing hanger, the utility model provides a kind of sealing performance controlled
Oil pipe, casing hanger, this hanger can be realized permanent seal, need not in the use to change, and greatly reduces the cost of production of engineerings such as oilfield gas injection, oil recovery, gives the oil field considerable economic benefit.
The application solves the technical scheme that its technical problem adopts: oil pipe, casing hanger that sealing property is controlled; Comprise suspension main body, metallic packing ring assembly and screwed retaining ring; Wherein hang on the head outer wall of main body and be processed with annular groove; Be processed with external screw thread below the annular groove, be connected with screwed retaining ring on the external screw thread; Said metallic packing ring assembly; Comprise conical ring, upper and lower metallic packing ring, excluder ring, O-ring seals, following conical ring; Wherein to be processed with cone angle respectively be 23 ° annular concave cone groove to the upper and lower surface of metallic packing ring; The lower surface of last conical ring, down the upper and lower surface of upper surface and the excluder ring of conical ring be respectively arranged with the metallic packing ring upper and lower surface on the corresponding tapered protrusion of annular concave cone groove; The outer wall of excluder ring is provided with seal groove along circumference, and O-ring seals is contained in the seal groove of excluder ring; Saidly go up conical ring, go up metallic packing ring, excluder ring, down metallic packing ring, conical ring fits together the back by annular concave cone groove successively and forms the metallic packing ring assembly down; In the annular groove of metallic packing ring assembly coaxial package on suspension main body outer wall.
Beneficial effect is:
1. controlled oil pipe, the casing hanger of the application's sealing property designs and adopts anti-fatigue, resisting corrosion double-level-metal sealing ring, and two sealing rings adopt tapered expansion formula structures, have strengthened the sealing property of sealing ring and casing tube four-way inner chamber; Can realize that wellhead assembly must not change the hanger seal member in oilfield engineering uses, long service life, guarantee the long-time use of well head can be aging because of seal member, damage the seepage phenomenon take place, reduce equipment investment in the well head production operation engineering;
② metal seal ring and the lumen of the tubing casing spool fit with the use of cone type, thereby reducing the suspension device to enhance the sealing ring and casing spool bore tubing friction fit and lift force, and can effectively The protective seal metal seal ring and the tubing casing spool cavity surface does not scratch the surface, but also facilitates the metal seal ring and tubing casing spool installation and use and maintenance; favor of gas injection and production operations oilfield production, oilfield production operations to save costs.
Description of drawings
Fig. 1 is the structural representation of the controlled oil pipe of the utility model sealing performance, casing hanger.
Among the figure: under 1-suspension main body, the last conical ring of 2-, the last metallic packing ring of 3-, the 3'-under metallic packing ring, 4-excluder ring, 5-O shape sealing ring, the 6-conical ring, 7-anticreep spiral shell not, 8-oil pipe, sleeve pipe.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
By Fig. 1 in conjunction with shown in Figure 2; Oil pipe, casing hanger that the application's sealing property is controlled; Comprise suspension main body 1, metallic packing ring assembly and screwed retaining ring 7; Wherein hang on the head outer wall of main body 1 and be processed with annular groove, be processed with external screw thread below the annular groove, be connected with screwed retaining ring 7 on the external screw thread; Said metallic packing ring assembly; Comprise conical ring 2, upper and lower metallic packing ring 3,3', excluder ring 4, O-ring seals 5, following conical ring 6; Wherein to be processed with cone angle respectively be 23 ° annular concave cone groove to the upper and lower surface of metallic packing ring; The lower surface of last conical ring 2, down the upper and lower surface of upper surface and the excluder ring 4 of conical ring 6 be respectively arranged with the metallic packing ring upper and lower surface on the corresponding tapered protrusion of annular concave cone groove; The outer wall of excluder ring 4 is provided with seal groove along circumference, and O-ring seals 5 is contained in the seal groove of excluder ring 4; Saidly go up conical ring 2, go up metallic packing ring 3, excluder ring 4, down metallic packing ring 3', conical ring 6 fits together the back by annular concave cone groove successively and forms the metallic packing ring assembly down; In the annular groove of metallic packing ring assembly coaxial package on suspension main body 1 outer wall.
During work, oil pipe, sleeve pipe 8 are threaded in the bottom of hanger.

Claims (1)

1. oil pipe, casing hanger that sealing property is controlled; Comprise suspension main body, metallic packing ring assembly and screwed retaining ring; It is characterized in that: be processed with annular groove on the head outer wall of suspension main body, be processed with external screw thread below the annular groove, be connected with screwed retaining ring on the external screw thread; Said metallic packing ring assembly; Comprise conical ring, upper and lower metallic packing ring, excluder ring, O-ring seals, following conical ring; Wherein to be processed with cone angle respectively be 23 ° annular concave cone groove to the upper and lower surface of metallic packing ring; The lower surface of last conical ring, down the upper and lower surface of upper surface and the excluder ring of conical ring be respectively arranged with the metallic packing ring upper and lower surface on the corresponding tapered protrusion of annular concave cone groove; The outer wall of excluder ring is provided with seal groove along circumference, and O-ring seals is contained in the seal groove of excluder ring; Saidly go up conical ring, go up metallic packing ring, excluder ring, down metallic packing ring, conical ring fits together the back by annular concave cone groove successively and forms the metallic packing ring assembly down; In the annular groove of metallic packing ring assembly coaxial package on suspension main body outer wall.
CN2011201852778U 2011-06-03 2011-06-03 Oil pipe and casing hanger with controllable sealing performance Expired - Fee Related CN202100220U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201852778U CN202100220U (en) 2011-06-03 2011-06-03 Oil pipe and casing hanger with controllable sealing performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201852778U CN202100220U (en) 2011-06-03 2011-06-03 Oil pipe and casing hanger with controllable sealing performance

Publications (1)

Publication Number Publication Date
CN202100220U true CN202100220U (en) 2012-01-04

Family

ID=45386236

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201852778U Expired - Fee Related CN202100220U (en) 2011-06-03 2011-06-03 Oil pipe and casing hanger with controllable sealing performance

Country Status (1)

Country Link
CN (1) CN202100220U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234657A (en) * 2014-09-23 2014-12-24 江苏金石科技有限公司 Double-limiting metal sealing oil pipe suspender
CN112780775A (en) * 2021-03-23 2021-05-11 苏州孚杰机械有限公司 Novel high-temperature sealing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104234657A (en) * 2014-09-23 2014-12-24 江苏金石科技有限公司 Double-limiting metal sealing oil pipe suspender
CN112780775A (en) * 2021-03-23 2021-05-11 苏州孚杰机械有限公司 Novel high-temperature sealing device

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120104

Termination date: 20130603