CN203321411U - Blowout preventer device for dual tube well to convert into single tube well - Google Patents
Blowout preventer device for dual tube well to convert into single tube well Download PDFInfo
- Publication number
- CN203321411U CN203321411U CN2013203191266U CN201320319126U CN203321411U CN 203321411 U CN203321411 U CN 203321411U CN 2013203191266 U CN2013203191266 U CN 2013203191266U CN 201320319126 U CN201320319126 U CN 201320319126U CN 203321411 U CN203321411 U CN 203321411U
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- flange
- hanger
- well
- eccentric
- looped pipeline
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Abstract
The utility model provides a blowout preventer device for a dual tube well to convert into a single tube well, and belongs to the technical field of oil exploitation. An upper flange is welded to the upper end of a wellhead auxiliary tube hanger, a lower flange is welded to the lower end of the wellhead auxiliary tube hanger, the end face of the upper flange is provided with a first steel ring sealing groove, and the end face of the lower flange is provided with a second steel ring sealing groove; an auxiliary tube hanger is welded in the inner hole of the wellhead auxiliary tube hanger and is connected to a tubing hanger, and the tubing hanger is provided with a hole for a tubing to penetrate and a rectangular groove for fixing a tubing hoop; the lower flange of the wellhead auxiliary tube hanger is connected to an upper flange of a cross tube of a Christmas tree; the upper flange of the wellhead auxiliary tube hanger is connected to a lower eccentric flange of an eccentric flange, and an upper eccentric flange of the eccentric flange is connected with a lower flange of a wellhead blowout preventer. By the aid of the blowout preventer device, blowout accidents occur rarely, environment pollution is reduced, risks of well maintenance operations are reduced greatly, and safety of operators and operating devices are protected.
Description
Technical field
The utility model relates to a kind of two-tube well conversion single tube well preventer device, belongs to technical field of petroleum extraction.
Background technology
In the underground work process, gas blowout accident occurs in order to prevent, a set of well control device need to be installed when underground work on well head in oilfield process.During the pressure of fluid column, will form overflow or well kick in flowing bottomhole pressure (FBHP) is greater than pit shaft, when serious, gas blowout accident can occurs.Can close in time fast well head when the effect of well control device overflow, well kick occur exactly in well, prevent gas blowout accident.
The on-the-spot wellhead blowout preventor used of underground work at present is applicable to the single tube well head, for dual tubing oil recovery well well head, but can't use, reason is that two cover oil pipe columns are arranged in dual tubing oil recovery well well, also there is no two-tube well preventer at present, in two-tube well underground work process, conventional preventer can't be installed, cause in two-tube well underground work process without well control device), once blowout occurs in the well workover process just can't be controlled in time, can cause very big pollution and security incident to environment, therefore current two-tube well well workover all needs to wait for that the oil well bottom pressure drops to safe range and just can carry out.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of two-tube well conversion single tube well preventer device.
A kind of two-tube well conversion single tube well preventer device, well head looped pipeline hanger upper end is welded with upper flange, well head looped pipeline hanger lower end welding lower flange, the upper flange end face has the first steel ring seal groove, and the lower flange end face has the second steel ring seal groove;
Well head looped pipeline hanger internal bore welding is connected to the looped pipeline hanger, and looped pipeline hanger connected pipes is hung, and oil pipe hangs with can have rectangular channel through the hole of oil pipe on tubing hanger, and rectangular channel is tubing coupling fixedly;
The lower flange of well head looped pipeline hanger connects the Christmas tree big four joint upper flange;
The upper flange of well head looped pipeline hanger is connected with the eccentric lower flange of eccentric flange, and the eccentric upper flange of eccentric flange is connected with the wellhead blowout preventor lower flange.
The utility model has the advantages that:
Can hang looped pipeline during two-tube well workover treatment and by eccentric flange, wellhead blowout preventor is installed, can prevent the generation of gas blowout accident, environmental contamination reduction.Greatly reduce the workover treatment risk, ensured the safety of operating personnel, implement.Reduced the workover treatment time.Effectively control unattended time, rate while having improved oil well production.
The accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to following, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 well head looped pipeline of the present utility model hanger structural representation.
Fig. 2 well head looped pipeline of the present utility model hanger structure schematic top plan view.
The eccentric flange structural representation that Fig. 3 the utility model is two-tube.
Fig. 4 structure eccentric flange of the present utility model schematic top plan view.
Fig. 5 work combination of the present utility model structural representation.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
The specific embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present utility model belong to protection domain of the present utility model.
Embodiment 1: as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of two-tube well conversion single tube well preventer device, well head looped pipeline hanger 1 upper end is welded with upper flange 2, well head looped pipeline hanger 1 lower end welding lower flange 3, upper flange 2 end faces are processed with steel ring seal groove 4, and lower flange 3 end faces are processed with steel ring seal groove 11;
Well head looped pipeline hanger 1 internal bore welding is connected to looped pipeline hanger 7, and looped pipeline hanger 7 connected pipes hang 5, and tubing hanger 5 has can have rectangular channel 6 through the hole of oil pipe on tubing hanger 5, and rectangular channel 6 prevents rotation for fixing tubing coupling;
Well head looped pipeline hanger 1 lower flange 3 connects Christmas tree big four joint upper flange 13;
Well head looped pipeline hanger 1 upper flange 2 is connected with the eccentric lower flange 10 of eccentric flange 8, and the eccentric upper flange 9 of eccentric flange 8 is connected with wellhead blowout preventor lower flange 12.
A kind of two-tube well is converted to single tube well wellhead assembly, in two-tube well carries out in the Downhole Construction process looped pipeline to be suspended on to pit shaft, be converted to conventional single tube well well head by eccentric flange again, existing wellhead blowout preventor is installed, is reached the suspension looped pipeline purpose that wellhead blowout preventor carries out well workover is installed simultaneously.
As mentioned above, embodiment of the present utility model is explained, but, as long as not breaking away from fact inventive point of the present utility model and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, within such variation also all is included in protection domain of the present utility model.
Claims (1)
1. a two-tube well conversion single tube well preventer device, is characterized in that well head looped pipeline hanger upper end is welded with upper flange, well head looped pipeline hanger lower end welding lower flange, and the upper flange end face has the first steel ring seal groove, and the lower flange end face has the second steel ring seal groove; Well head looped pipeline hanger internal bore welding is connected to the looped pipeline hanger, and looped pipeline hanger connected pipes is hung, and oil pipe hangs with can have rectangular channel through the hole of oil pipe on tubing hanger, and rectangular channel is tubing coupling fixedly; The lower flange of well head looped pipeline hanger connects the Christmas tree big four joint upper flange; The upper flange of well head looped pipeline hanger is connected with the eccentric lower flange of eccentric flange, and the eccentric upper flange of eccentric flange is connected with the wellhead blowout preventor lower flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203191266U CN203321411U (en) | 2013-06-05 | 2013-06-05 | Blowout preventer device for dual tube well to convert into single tube well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203191266U CN203321411U (en) | 2013-06-05 | 2013-06-05 | Blowout preventer device for dual tube well to convert into single tube well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203321411U true CN203321411U (en) | 2013-12-04 |
Family
ID=49660774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203191266U Expired - Fee Related CN203321411U (en) | 2013-06-05 | 2013-06-05 | Blowout preventer device for dual tube well to convert into single tube well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203321411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2791830C1 (en) * | 2022-10-13 | 2023-03-13 | Публичное акционерное общество "Татнефть" имени В.Д.Шашина | Preventer with a coil and method of its installation on the wellhead fitting mounting flange |
-
2013
- 2013-06-05 CN CN2013203191266U patent/CN203321411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2791830C1 (en) * | 2022-10-13 | 2023-03-13 | Публичное акционерное общество "Татнефть" имени В.Д.Шашина | Preventer with a coil and method of its installation on the wellhead fitting mounting flange |
| RU2796145C1 (en) * | 2023-03-10 | 2023-05-17 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Wellhead valve adapter coil for preventer with two rows of rams (embodiments) |
| RU2805701C1 (en) * | 2023-04-03 | 2023-10-23 | Публичное акционерное общество "Татнефть"имени В.Д.Шашина | Method for installing preventer on support flange of wellhead assembly and constant tripping out two-lift arrangement of downhole equipment from well and device for its implementation |
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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 |
Granted publication date: 20131204 Termination date: 20210605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |