CN201214997Y - Metal seal double tube christmas tree wellhead device - Google Patents
Metal seal double tube christmas tree wellhead device Download PDFInfo
- Publication number
- CN201214997Y CN201214997Y CNU2008200375303U CN200820037530U CN201214997Y CN 201214997 Y CN201214997 Y CN 201214997Y CN U2008200375303 U CNU2008200375303 U CN U2008200375303U CN 200820037530 U CN200820037530 U CN 200820037530U CN 201214997 Y CN201214997 Y CN 201214997Y
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- ring
- tubing
- sealing ring
- metal sealing
- metallic
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Abstract
The utility model provides a metal sealing wellhead device for a double tubing oil production tree. A double tubing oil production tree is composed of an oil production tree body and valves. Two pipelines are arranged in the oil production tree body, and valve holes which are provided with a plurality of valves are arranged in the pipelines. The lower ends of the two pipelines are respectively communicated with the upper opening of a two-column tubing hanger. Besides the metal upper compression ring and a sealing packing, an inverted conical metal sealing ring and an annulus metal sealing ring are sequentially arranged between the inner wall of a tubing head and the tubing hanger. The inner cavity of the lower end of the tubing head is provided with a ring groove used for hanging a casing head, a BT sealing ring and a split type metal sealing ring which is composed of an upper metal sealing ring and a lower metal sealing ring, the upper metal sealing and the lower metal sealing ring are corresponding conical surfaces and are attached, and the outer surfaces and the inner surfaces of the upper metal sealing ring and the lower metal sealing are provided with circular arc-shaped sealing lug bosses. The utility model is reasonable in structure, effectively improves the oil production and the working efficiency, has good sealing performance, is safe and reliable, and is especially applicable to high-pressure wellheads.
Description
Affiliated technical field
The utility model relates to a kind of oil exploitation device, particularly a kind of metallic seal dual tubing oil recovery tree wellhead assembly.
Background technology
Production tree well head device is the visual plant of oil exploitation.Existing production tree well head device is made up of tubing head, production tree and casing head three parts usually, is used for adapter sleeve tubing string, tubing string, well head and oil pipeline is coupled together, so that oil is exploited, stored and processes; And seal between each layer sleeve pipe and and oil pipe between annular space, and can control the pressure of production wellhead and regulate the well head flow, also can be used for special operations such as acid fracturing, water filling, test.Owing to have only a production tree, thereby produce oil (gas) amount is severely limited, if in order to improve production efficiency, then need open oil well in addition, so not only invest huge, and easier destruction environment.In addition, it is sealed into rubber parts existing production tree well head device, and its sealing, high pressure resistant, poor corrosion resistance are very easily damaged, and be easily accidents caused, is unsuitable for high-pressure well mouth and uses.
Summary of the invention
For overcoming the deficiencies in the prior art part, the utility model provide a kind of rational in infrastructure, improve oil production and operating efficiency, and good seal performance, safe and reliable metallic seal dual tubing oil recovery tree wellhead assembly.
The technical scheme that its technical problem that solves the utility model adopts is: comprise tubing head and production tree; It is characterized in that: described production tree is the dual tubing oil recovery tree, and two post boll-weevil hangers are set in tubing head accordingly.
Above-mentioned dual tubing oil recovery tree comprises production tree body and valve, offers two pipelines in the production tree body, respectively offers several valve openings in two pipelines, and valve is installed on the valve opening; Article two, the lower end of pipeline interlinks with two the suitable for reading of post boll-weevil hanger respectively.
Between tubing head inwall and boll-weevil hanger except that being provided with metal upper press ring and airtight and watertight padding, below airtight and watertight padding, also be provided with inversed taper platform shape metallic packing ring and ring shaped metallic seal ring successively, and be equipped with rubber seal between the outer wall of inversed taper platform shape metallic packing ring and boll-weevil hanger, tubing head inwall; Tapered of the outside, lower end of ring shaped metallic seal ring, the conical surface of this taper surface and tubing head inwall is fitted.Like this, the twice metallic packing ring of being set up can improve the sealing performance between tubing head and the boll-weevil hanger effectively, improves the security reliability of work.
Inner chamber in the tubing head lower end is provided with annular groove and the BT sealing ring that is used for the suspension sleeve head, below the BT sealing ring, be provided with the split type metallic packing ring that constitutes by upper and lower twice metallic packing ring, the inner surface of last metallic packing ring is fitted for the corresponding conical surface with following metallic seal ring outer surface, and is equipped with the seal boss of circular arc at the inner surface of the external surface of last metallic packing ring and lower sealing ring.Like this, the split type metallic packing ring of being set up can improve the sealing performance between tubing head and the casing head effectively, improves the security reliability of work.
The beneficial effects of the utility model are: it is rational in infrastructure, has improved oil production and operating efficiency effectively, and good seal performance, and is safe and reliable, is particularly suitable for high-pressure well mouth and uses.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
The structural representation of the inversed taper platform shape metallic packing ring that Fig. 2 is adopted for the utility model embodiment;
The structural representation of the ring shaped metallic seal ring that Fig. 3 is adopted for the utility model embodiment;
The structural representation of the split type metallic packing ring that Fig. 4 is adopted for the utility model embodiment.
Among the figure: 1 is tubing head, 2 is boll-weevil hanger, 3 is the production tree body, 4 is manual flap type, 5 is stop valve, 6 is pressure meter, 7 are cage cover choke valve, 8 are the moving valve that surges, 9 is the metal upper press ring, 10 are airtight and watertight padding, 11 is inversed taper platform shape metallic packing ring, 12 is the ring shaped metallic seal ring, 13 is plug, 14 is the BT sealing ring, 15 is split type metallic packing ring, 15-1 is last metallic packing ring, 15-2 is following metallic packing ring, 15-3 is a seal boss, 16 is pressing plate, 17 is stop valve.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
The utility model comprises tubing head 1, boll-weevil hanger 2 and production tree; Production tree is to include production tree body 3, the manual dual tubing oil recovery tree of flap type 4, surge safety valve 8 and cage cover choke valve 7, offer two pipelines in the production tree body 3, in two pipelines, respectively offer five valve openings, wherein, article one, on five of pipeline valve openings manual flap type 4 is housed all, five valve openings of another pipeline are equipped with the moving flap type of pickpocket 4, surge a safety valve 8 and a cage cover choke valve 7 from bottom to top successively; Article two, be equipped with stop valve 5 and pressure meter 6 in the pipeline.Article two, the lower end of pipeline interlinks with two the suitable for reading of post boll-weevil hanger 2 that are arranged in the tubing head 1 respectively; The double tube production tree that the utility model adopted, because two oil pipelines are arranged, thereby oil production and operating efficiency have been improved effectively, and adopt and in production tree body 3, to offer oil duct, changed several traditional valves and linked to each other successively by flange and constitutes defective more than the existing consumptive material height of production tree, the leak point.Between tubing head 1 inwall and boll-weevil hanger 2 except that being provided with metal upper press ring 9 and airtight and watertight padding 10, below airtight and watertight padding 10, also be provided with inversed taper platform shape metallic packing ring 11 and ring shaped metallic seal ring 12 successively, and be equipped with rubber seal between the external surface of the outer wall of the inwall of inversed taper platform shape metallic packing ring 11 and boll-weevil hanger 2, inversed taper platform shape metallic packing ring 11 and tubing head 1 inwall; Tapered of the outside, lower end of ring shaped metallic seal ring 12, the conical surface of this taper surface and tubing head 1 inwall is fitted; Inversed taper platform shape metallic packing ring of being set up 11 and ring shaped metallic seal ring 12 can improve the sealing performance between tubing head 1 and the boll-weevil hanger 2 effectively.Inwall in tubing head 1 lower end is provided with annular groove and the BT sealing ring 14 that is used for the suspension sleeve head, is provided with the split type metallic packing ring 15 that is made of upper and lower twice metallic packing ring 15-1,15-2 below BT sealing ring 14, is fixed by pressing plate 16; The inner surface of last metallic packing ring 15-1 is fitted for the corresponding conical surface with following metallic packing ring 15-2 external surface, and is equipped with the seal boss 15-3 of circular arc at the inner surface of the external surface of last metallic packing ring 15-1 and lower sealing ring 15-2; The split type metallic packing ring of being set up 15 can improve the sealing performance between tubing head 1 and the casing head effectively, improves the security reliability of work.Be respectively equipped with by two manual flap types 4, plug 13 in the both sides of tubing head 1, and the double-vane of two manual flap types 4, stop valve 17 and pressure meter 6 formations, to form the borehole pressure circulation and to play the well cementation effect.
Claims (4)
1, metallic seal dual tubing oil recovery tree wellhead assembly comprises tubing head and production tree; It is characterized in that: described production tree is the dual tubing oil recovery tree, is provided with two post boll-weevil hangers in tubing head accordingly.
2, metallic seal dual tubing oil recovery tree wellhead assembly according to claim 1, it is characterized in that: above-mentioned dual tubing oil recovery tree comprises production tree body and valve, offer two pipelines in the production tree body, respectively offer several valve openings in two pipelines, valve is installed on the valve opening; Article two, the lower end of pipeline interlinks with two the suitable for reading of post boll-weevil hanger respectively.
3, metallic seal dual tubing oil recovery tree wellhead assembly according to claim 1, it is characterized in that: between tubing head inwall and boll-weevil hanger except that being provided with metal upper press ring and airtight and watertight padding, below airtight and watertight padding, also be provided with inversed taper platform shape metallic packing ring and ring shaped metallic seal ring successively, and be equipped with rubber seal between the outer wall of inversed taper platform shape metallic packing ring and boll-weevil hanger, tubing head inwall; Tapered of the outside, lower end of ring shaped metallic seal ring, the conical surface of this taper surface and tubing head inwall is fitted.
4, metallic seal dual tubing oil recovery tree wellhead assembly according to claim 1, it is characterized in that: the inner chamber in the tubing head lower end is provided with annular groove and the BT sealing ring that is used for the suspension sleeve head, below the BT sealing ring, be provided with the split type metallic packing ring that constitutes by upper and lower twice metallic packing ring, the inner surface of last metallic packing ring is fitted for the corresponding conical surface with following metallic seal ring outer surface, and is equipped with the seal boss of circular arc at the inner surface of the external surface of last metallic packing ring and lower sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200375303U CN201214997Y (en) | 2008-06-11 | 2008-06-11 | Metal seal double tube christmas tree wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200375303U CN201214997Y (en) | 2008-06-11 | 2008-06-11 | Metal seal double tube christmas tree wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201214997Y true CN201214997Y (en) | 2009-04-01 |
Family
ID=40520201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200375303U Expired - Lifetime CN201214997Y (en) | 2008-06-11 | 2008-06-11 | Metal seal double tube christmas tree wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201214997Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012112020A1 (en) * | 2011-02-17 | 2012-08-23 | Escobar-Castelo Jose Eduardo | Device for controlling fluids |
| CN102777602A (en) * | 2012-08-02 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Sealing ring used for petroleum machinery |
| CN103452515A (en) * | 2012-06-01 | 2013-12-18 | 洪泽东俊机械有限公司 | Wellhead bimetal seal assembly |
| CN106050180A (en) * | 2016-07-15 | 2016-10-26 | 中国石油天然气集团公司 | Metal sealing ring for radial sealing |
| CN107476780A (en) * | 2017-10-13 | 2017-12-15 | 苏州优力克流体控制科技有限公司 | A kind of monoblock type double tube valve body |
| CN110656908A (en) * | 2019-10-08 | 2020-01-07 | 中国石油集团渤海石油装备制造有限公司 | All-metal sealed double-pipe steam injection wellhead device for inclined shaft |
-
2008
- 2008-06-11 CN CNU2008200375303U patent/CN201214997Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012112020A1 (en) * | 2011-02-17 | 2012-08-23 | Escobar-Castelo Jose Eduardo | Device for controlling fluids |
| CN103452515A (en) * | 2012-06-01 | 2013-12-18 | 洪泽东俊机械有限公司 | Wellhead bimetal seal assembly |
| CN102777602A (en) * | 2012-08-02 | 2012-11-14 | 昆山旭虹精密零组件有限公司 | Sealing ring used for petroleum machinery |
| CN106050180A (en) * | 2016-07-15 | 2016-10-26 | 中国石油天然气集团公司 | Metal sealing ring for radial sealing |
| CN107476780A (en) * | 2017-10-13 | 2017-12-15 | 苏州优力克流体控制科技有限公司 | A kind of monoblock type double tube valve body |
| CN110656908A (en) * | 2019-10-08 | 2020-01-07 | 中国石油集团渤海石油装备制造有限公司 | All-metal sealed double-pipe steam injection wellhead device for inclined shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090401 |