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
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China
Prior art keywords
ring
sealing ring
metal sealing
cone
hanger
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Expired - Fee Related
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CN2011201852778U
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Chinese (zh)
Inventor
李宏
梁洪卫
阚玲玲
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Northeast Petroleum University
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Northeast Petroleum University
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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

密封性能可控的油管、套管悬挂器Tubing and casing hanger with controllable sealing performance

技术领域 technical field

本实用新型渉及一种油田注气、采油用油管、套管悬挂器。 The utility model relates to an oil pipe and casing hanger for gas injection and oil production in an oil field.

背景技术 Background technique

目前, 油田注水、注气、采气、采油井口装置的油管和套管悬挂器都是采用非金属密封为主,非金属密封材料易老化,使用寿命短,防腐性能差。须定时更换密封部位非金属密封圈,但更换操作须使用特大型的移动设备和工程车辆,操作工艺复杂,生产作业效率低,同时浪费了大量的财力和物力。  At present, the tubing and casing hangers of oilfield water injection, gas injection, gas production, and oil production wellhead devices are mainly made of non-metallic seals. Non-metallic sealing materials are easy to age, have a short service life and poor anti-corrosion performance. The non-metallic sealing ring of the sealing part must be replaced regularly, but the replacement operation requires the use of oversized mobile equipment and engineering vehicles, the operation process is complicated, the production efficiency is low, and a lot of financial and material resources are wasted. the

发明内容 Contents of the invention

为了克服背景技术中油管、套管悬挂器的不足,本实用新型提供一种密封性能可控 In order to overcome the deficiencies of the tubing and casing hangers in the background technology, the utility model provides a controllable sealing performance

的油管、套管悬挂器,该悬挂器可实现永久密封,使用过程中无需更换,大大降低了油田注气、采油等工程的生产成本,给油田带来可观的经济效益。 The tubing and casing hanger, which can realize permanent sealing, does not need to be replaced during use, which greatly reduces the production cost of oilfield gas injection, oil production and other projects, and brings considerable economic benefits to the oilfield.

本申请解决其技术问题所采用的技术方案是:密封性能可控的油管、套管悬挂器,包括悬挂主体、金属密封环总成及防脱螺母,其中悬挂主体的头部外壁上加工有环形凹槽,环形凹槽的下面加工有外螺纹,外螺纹上连接有防脱螺母;所述金属密封环总成,包括上锥环、上、下金属密封环、封隔环、 O形密封圈、下锥环,其中金属密封环的上下表面分别加工有锥角为23°的环形凹锥槽,上锥环的下表面、下锥环的上表面及封隔环 的上下表面分别设置有与金属密封环上下表面上环形凹锥槽相应的锥形凸起,封隔环的外壁沿圆周设有密封圈槽,O形密封圈装在封隔环的密封圈槽內;所述上锥环、上金属密封环、封隔环、下金属密封环、下锥环依次通过环形凹锥槽组装在一起后形成金属密封环总成;金属密封环总成同轴套装在悬挂主体外壁上的环形凹槽内。 The technical solution adopted in this application to solve the technical problems is: oil pipe and casing hanger with controllable sealing performance, including suspension main body, metal sealing ring assembly and anti-loosening nut, wherein the outer wall of the head of the suspension main body is processed with a ring Groove, the bottom of the annular groove is processed with external thread, and the anti-loosening nut is connected to the external thread; the metal sealing ring assembly includes the upper cone ring, the upper and lower metal sealing rings, the packing ring, and the O-ring , lower cone ring, wherein the upper and lower surfaces of the metal sealing ring are respectively processed with annular concave cone grooves with a cone angle of 23°, the lower surface of the upper cone ring, the upper surface of the lower cone ring and the upper and lower surfaces of the packing ring are respectively provided with On the upper and lower surfaces of the metal sealing ring, the corresponding conical protrusions of the annular concave cone groove, the outer wall of the packing ring is provided with a sealing ring groove along the circumference, and the O-shaped sealing ring is installed in the sealing ring groove of the packing ring; the upper cone ring , the upper metal seal ring, the packing ring, the lower metal seal ring, and the lower cone ring are sequentially assembled together through the annular concave cone groove to form a metal seal ring assembly; the metal seal ring assembly is coaxially sleeved on the outer wall of the suspension main body. inside the groove.

有益效果是: The beneficial effects are:

①本申请的密封性能可控的油管、套管悬挂器,设计采用抗疲劳耐腐蚀双层金属密封环,两个密封环采用锥形膨胀式结构,增强了密封环与油管套管四通內腔的密封性能;可以实现井口装置在油田工程使用中不须更换悬挂器密封部件,使用寿命长,保证井口长时间使用不会因密封部件老化、损坏发生渗漏现象,减少井口生产作业工程中设备投资; ① The tubing and casing hanger with controllable sealing performance of this application is designed with anti-fatigue and corrosion-resistant double-layer metal sealing rings. The sealing performance of the cavity; it can realize that the wellhead device does not need to replace the sealing parts of the hanger during the use of oilfield engineering, and has a long service life, ensuring that the wellhead will not leak due to aging and damage of the sealing parts for a long time, and reduce the production and operation of the wellhead. equipment investment;

②金属密封环与油管套管四通內腔的配合采用圆锥体配合型式,从而减小提升悬挂器装置时密封环与油管套管四通內腔的贴合磨擦力和提升力,并能有效的保护密封金属密封环与油管套管四通內腔的面表面不划伤,也方便了金属密封环与油管套管四通的安装和使用维护;有利于油田注气和采油作业生产,为油田节约生产作业成本。 ②The cooperation between the metal sealing ring and the inner cavity of the tubing casing spool adopts a conical fit type, so as to reduce the fitting friction force and lifting force of the sealing ring and the inner cavity of the tubing casing spool when lifting the hanger device, and can effectively The surface of the inner cavity of the metal sealing ring and the tubing casing spool is not scratched, and it is also convenient for the installation, use and maintenance of the metal sealing ring and the tubing casing spool; it is beneficial to the production of gas injection and oil production in the oil field. The oil field saves production operation costs.

附图说明 Description of drawings

图1是本实用新型密封性能可控的油管、套管悬挂器的结构示意图。 Fig. 1 is a structural schematic diagram of the tubing and casing hanger with controllable sealing performance of the utility model.

图中:1-悬挂主体、2-上锥环、3- 上金属密封环、3'- 下金属密封环、4-封隔环、5-O形密封圈、6-下锥环、7-防脱螺毌、8-油管、套管。 In the figure: 1-suspension main body, 2-upper cone ring, 3-upper metal seal ring, 3'-lower metal seal ring, 4-separation ring, 5-O-ring seal, 6-lower cone ring, 7- Anti-off screw, 8-tubing, casing.

具体实施方式 Detailed ways

 下面结合附图对本实用新型作进一步的说明: Below in conjunction with accompanying drawing, the utility model is further described:

由图1结合图2所示,本申请的密封性能可控的油管、套管悬挂器,包括悬挂主体1、金属密封环总成及防脱螺母7,其中悬挂主体1的头部外壁上加工有环形凹槽,环形凹槽的下面加工有外螺纹,外螺纹上连接有防脱螺母7;所述金属密封环总成,包括上锥环2、上、下金属密封环3、3'、封隔环4、 O形密封圈5、下锥环6,其中金属密封环的上下表面分别加工有锥角为23°的环形凹锥槽,上锥环2的下表面、下锥环6的上表面及封隔环4 的上下表面分别设置有与金属密封环上下表面上环形凹锥槽相应的锥形凸起,封隔环4的外壁沿圆周设有密封圈槽,O形密封圈5装在封隔环4的密封圈槽內;所述上锥环2、上金属密封环3、封隔环4、下金属密封环3'、下锥环6依次通过环形凹锥槽组装在一起后形成金属密封环总成;金属密封环总成同轴套装在悬挂主体1外壁上的环形凹槽内。 As shown in Fig. 1 in conjunction with Fig. 2, the oil pipe and casing hanger with controllable sealing performance of the present application includes a suspension main body 1, a metal sealing ring assembly and an anti-loosening nut 7, wherein the outer wall of the head of the suspension main body 1 is processed There is an annular groove, and an external thread is processed under the annular groove, and an anti-loosening nut 7 is connected to the external thread; the metal sealing ring assembly includes an upper cone ring 2, upper and lower metal sealing rings 3, 3', Packing ring 4, O-shaped sealing ring 5, and lower cone ring 6, wherein the upper and lower surfaces of the metal seal ring are respectively processed with annular concave cone grooves with a cone angle of 23°, the lower surface of the upper cone ring 2, and the lower surface of the lower cone ring 6 The upper surface and the upper and lower surfaces of the packing ring 4 are respectively provided with conical protrusions corresponding to the annular concave cone grooves on the upper and lower surfaces of the metal sealing ring, the outer wall of the packing ring 4 is provided with a sealing ring groove along the circumference, and the O-shaped sealing ring 5 Installed in the sealing ring groove of the packer ring 4; the upper cone ring 2, the upper metal seal ring 3, the packer ring 4, the lower metal seal ring 3', and the lower cone ring 6 are assembled together through the annular concave cone groove in sequence Finally, a metal sealing ring assembly is formed; the metal sealing ring assembly is coaxially sleeved in the annular groove on the outer wall of the suspension main body 1 .

工作时,油管、套管8螺纹连接在悬挂器的下部。 During work, the oil pipe and casing pipe 8 are threadedly connected to the bottom of the hanger.

Claims (1)

1.一种密封性能可控的油管、套管悬挂器,包括悬挂主体、金属密封环总成及防脱螺母,其特征在于:悬挂主体的头部外壁上加工有环形凹槽,环形凹槽的下面加工有外螺纹,外螺纹上连接有防脱螺母;所述金属密封环总成,包括上锥环、上、下金属密封环、封隔环、 O形密封圈、下锥环,其中金属密封环的上下表面分别加工有锥角为23°的环形凹锥槽,上锥环的下表面、下锥环的上表面及封隔环 的上下表面分别设置有与金属密封环上下表面上环形凹锥槽相应的锥形凸起,封隔环的外壁沿圆周设有密封圈槽,O形密封圈装在封隔环的密封圈槽內;所述上锥环、上金属密封环、封隔环、下金属密封环、下锥环依次通过环形凹锥槽组装在一起后形成金属密封环总成;金属密封环总成同轴套装在悬挂主体外壁上的环形凹槽内。 1. A oil pipe and casing hanger with controllable sealing performance, comprising a suspension main body, a metal sealing ring assembly and an anti-loosening nut, characterized in that: the outer wall of the head of the suspension main body is processed with an annular groove, and the annular groove The lower part of the outer thread is processed with an external thread, and an anti-loosening nut is connected to the external thread; the metal seal ring assembly includes an upper cone ring, an upper and a lower metal seal ring, a packing ring, an O-shaped seal ring, and a lower cone ring, wherein The upper and lower surfaces of the metal sealing ring are respectively processed with annular concave cone grooves with a cone angle of 23°. The lower surface of the upper cone ring, the upper surface of the lower cone ring and the upper and lower surfaces of the isolation ring are respectively provided with The corresponding conical protrusion of the annular concave cone groove, the outer wall of the packing ring is provided with a sealing ring groove along the circumference, and the O-shaped sealing ring is installed in the sealing ring groove of the packing ring; the upper cone ring, the upper metal sealing ring, The packing ring, the lower metal sealing ring and the lower cone ring are sequentially assembled together through the annular concave cone groove to form a metal sealing ring assembly; the metal sealing ring assembly is coaxially sleeved in the annular groove on the outer wall of the suspension main body.
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

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Cited By (4)

* 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
CN109958398A (en) * 2019-04-26 2019-07-02 昆山艾蓓蓓阀门有限公司 A kind of four-way bobbin seal structure applied to oil well
CN112780775A (en) * 2021-03-23 2021-05-11 苏州孚杰机械有限公司 Novel high-temperature sealing device
CN113756737A (en) * 2021-09-22 2021-12-07 中海石油(中国)有限公司 Oil pipe hanger device for shallow water underwater Christmas tree

Cited By (6)

* 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
CN109958398A (en) * 2019-04-26 2019-07-02 昆山艾蓓蓓阀门有限公司 A kind of four-way bobbin seal structure applied to oil well
CN109958398B (en) * 2019-04-26 2024-05-07 昆山艾蓓蓓阀门有限公司 Four-way sleeve sealing structure applied to oil well
CN112780775A (en) * 2021-03-23 2021-05-11 苏州孚杰机械有限公司 Novel high-temperature sealing device
CN113756737A (en) * 2021-09-22 2021-12-07 中海石油(中国)有限公司 Oil pipe hanger device for shallow water underwater Christmas tree
CN113756737B (en) * 2021-09-22 2023-08-22 中海石油(中国)有限公司 Oil pipe hanger device for shallow water underwater Christmas tree

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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