CN205577929U - But do not have to cut and weld whole casing head of recovery type - Google Patents
But do not have to cut and weld whole casing head of recovery type Download PDFInfo
- Publication number
- CN205577929U CN205577929U CN201521101548.1U CN201521101548U CN205577929U CN 205577929 U CN205577929 U CN 205577929U CN 201521101548 U CN201521101548 U CN 201521101548U CN 205577929 U CN205577929 U CN 205577929U
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- flange
- casing
- casing head
- head body
- crossover
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Abstract
The utility model relates to a but do not have to cut and weld whole casing head of recovery type, including lead screw flange, bolt lead screw, first conversion flange box, gland nut, second conversion flange pin thread, second conversion flange box, casing head body, casing head body internally mounted has intermediate casing dabber formula casing hanger and sealing bushing, and the casing head body is inside still to be equipped with the shaft type casing hanger of oil reservoir bushing core, and the shaft type casing head hanger of oil reservoir bushing core is sat on sealing bushing, and casing head body top is equipped with sealed backing ring and the bolt is connected with the internally mounted 0 head. The utility model discloses realize just only accomplishing the operation on the rig floor, cut and weldment work at the scene of being out, improves operating mass with rated load, need not wait for moreover that surface casing waits with fixed attention mounting sleeve head immediately, shortens preceding downcomer of mounting sleeve head and sheathed tube time, and the mechanism can also repeatedly withdraw utilization, reduce cost.
Description
Technical field
This utility model relates to the casing head technical field of oil and gas industry, particularly to a kind of without cutting weldering recoverable integral cannula head.
Background technology
In oil and gas industry, casing head, i.e. it is used for fixing the well head of drilling well, connect wellhead casing pipe post, in order to support the gravity of protective casing and production string, seal the annular space between each layer pipe, for installing preventer, tubing head, production tree provides transition to connect, and by two side outlets on casing head body, can carry out feeding mud, monitoring and fill the construction operations such as balance liquid.Hang and connect one of the parts that conduit and sleeve pipe mechanism are then casing head most criticals.Casing head the most both domestic and external, in installation process, it is required for cutting away the box cupling of last root sleeve pipe, also conduit is welded with the support member of bottom or is otherwise fixed, these work can only wait complete under surface pipe or well cementation after, just can complete under rig floor, its poor working environment, HSE and work quality cannot ensure.Therefore this traditional structure is defective.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of without cutting weldering recoverable integral cannula head.
nullThis utility model solves its technical problem and be the technical scheme is that a kind of without cutting weldering recoverable integral cannula head，Including supporting fixing surface pipe and holding the screw mandrel flange of conduit tightly、Bolt screw mandrel、The the first crossover flange box docked with screw mandrel flange、The clamp nut of connection wire rod flange、Connect the second crossover flange pin thread of surface pipe、The the second crossover flange box docked with the second crossover flange pin thread，Described second crossover flange pin thread and the second crossover flange box are connected by connecting bolt，It is connected with described second crossover flange pin thread by connecting bolt and has casing head body，Described casing head body side is provided with valve、The first companion flange being connected with described valve、The first plug being connected with described first companion flange、The stop valve being connected with described first plug、The Pressure gauge being connected with described stop valve，Described casing head body opposite side is provided with the second companion flange、The second plug being connected with described second companion flange，Gasket ring is connected between described casing head body and the second companion flange，Described casing head body interior is provided with protective casing mandrel type casing hanger and seal cartridge，Described casing head body interior is additionally provided with production string mandrel type casing hanger，Described production string core axis bushing header hanger is sitting on seal cartridge，Described casing head bodies top is provided with gasket ring and bolt is connected with tubing head.
As the further improvement of the design, described second crossover flange box external diameter and the second crossover flange pin thread external diameter are respectively less than described catheter diameter.
The beneficial effects of the utility model are: this utility model realizes only just completing on rig floor operation, carry out the most at the scene cutting and welding job, improve work quality, and without waiting for surface pipe and wait and solidifying casing head can be installed immediately, shorten and downcomer and the time of sleeve pipe before casing head are installed, mechanism can also repeat to regain utilization, reduces cost.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is that schematic diagram is partly cutd open in installation of the present utility model.
Fig. 3 is installation schematic top plan view of the present utility model.
Fig. 4 is the second crossover flange box of the present utility model and the first crossover flange box structural representation.
1. casing head body, 2. screw mandrel flange in the drawings, 3. the second crossover flange box, 4. the second crossover flange pin thread, 5. valve, 6. the first companion flange, 7. the first plug, 8. stop valve, 9. Pressure gauge, 10. protective casing mandrel type casing hanger, 11. seal cartridges, 12. production string mandrel type casing hangers, 13. second plugs, 14. gasket rings, 15. gasket rings, 16. second companion flanges, 17. first crossover flange boxes, 18. clamp nuts, 19. bolts, 20. conduits, 21. connecting bolts, 22. bolt screw mandrels, 23. surface pipes.
Detailed description of the invention
Describe this utility model, illustrative examples therein and explanation in detail below in conjunction with accompanying drawing and specific embodiment to be only used for explaining this utility model, but be not intended as restriction of the present utility model.
nullEmbodiment: a kind of without cutting weldering recoverable integral cannula head，Including supporting fixing surface pipe 23 and holding the screw mandrel flange 2 of conduit 20 tightly、Bolt screw mandrel 22、The the first crossover flange box 17 docked with screw mandrel flange 2、The clamp nut 18 of connection wire rod flange 2、Connect the second crossover flange pin thread 4 of surface pipe 23、The the second crossover flange box 3 docked with the second crossover flange pin thread 4，Described second crossover flange pin thread 4 and the second crossover flange box 3 are connected by connecting bolt 21，It is connected with described second crossover flange pin thread 4 by connecting bolt 21 and has casing head body 1，Described casing head body 1 side is provided with valve 5、The first companion flange 6 being connected with described valve 5、The first plug 7 being connected with described first companion flange 6、The stop valve 8 being connected with described first plug 7、The Pressure gauge 9 being connected with described stop valve 8，Described casing head body 1 opposite side is provided with the second companion flange 16、The second plug 13 being connected with described second companion flange 16，It is connected gasket ring 14 between described casing head body 1 with the second companion flange 16，Described casing head body 1 is internally installed protective casing mandrel type casing hanger 10 and seal cartridge 11，Described casing head body 1 is internal is additionally provided with production string mandrel type casing hanger 12，Described production string mandrel type casing hanger 12 is sitting on seal cartridge 11，Described casing head body 1 top is provided with gasket ring 15 and bolt 19 is connected with tubing head.
As the further improvement of the design, described second crossover flange box 3 external diameter and the second crossover flange pin thread 4 external diameter are respectively less than described conduit 20 internal diameter.
During installation, after installing conduit 20 at the scene, the clamp nut 18 on screw mandrel flange 2 both sides can be unclamped, screw mandrel flange 2 is encircled and is the tightliest gone up clamp nut 18 on conduit 20, then being connected with screw mandrel flange 2 with the first crossover flange box 17, the first crossover flange box 17 top connects conduit 20 and horn mouth.Be drilled one open after, under enter surface pipe 23, the female box cupling of the second crossover flange pin thread 4 and last root surface pipe 23 is made to be connected, second crossover flange box 3 is connected with the second crossover flange pin thread 4, second crossover flange pin thread 4 top epimerite in succession, second crossover flange box 3 and the second crossover flange pin thread enter to specify position for 4 times, i.e. second crossover flange box 3 and the second crossover flange pin thread 4 are lowered in conduit 20, make surface pipe 23 can reach to specify position so that the second crossover flange pin thread 4 is away from screw mandrel flange 2 when installing casing head, there are enough installing spaces.Bolt on screw mandrel 22, bolt screw mandrel 22 is made to head in the locating slot of the second crossover flange pin thread 4, play the effect supporting and preventing surface pipe 23 from rotating, solidification is withouted waiting for after having cemented the well, dismantle at once the first crossover flange box 17 above screw mandrel flange 2 and conduit 20 etc. and unload the connecting bolt 21 of the second crossover flange pin thread 3, remove the second crossover flange box 3, install casing head body 1 proceed to two open three spudding wells work, Deng surface conductor pipe cast the cement solidifies after can exit bolt screw mandrel 22 immediately, come loose clamp nut 18, screw mandrel flange 2 is unclamped and recycling.
In order to illustrate the technical characterstic of this patent in more detail, now this patent is applied to TF20 " × 13 3/8 " × 9
5/8 " × 7 "-5000PSI well head illustrates.
Screw mandrel flange 2 is the clamping hoop type structure of upper and lower two halves, fixing bolt and clamp nut by both sides connect fixing, encircle in 20 " on conduit, screw mandrel flange 2 makes its internal diameter alterable scope be that 505-515mm meets field demand by adjusting two half gaps, its circumference aspect is additionally provided with 6 M30 × 3 bolt screw mandrels 22 and is used for supporting and prevent surface pipe 23 from rotating (the specification quantity that can adjust bolt screw mandrel 22 according to the actual weight of on-the-spot surface pipe meets bearing requirements), and it is provided with bolt connecting hole, inner chamber is additionally provided with 20 " step that accommodated of conduit, can be stable be sitting in 20 " on conduit.
First crossover flange box 17 bottom is provided with bolt connecting hole and is bolted with screw mandrel flange 2, and upper lumen is provided with 20 " the threaded conduit of BCSG 20, pipe end wall thickness meets 20 " guide thimble wall thickness requirement.
Second crossover flange pin thread 4 external diameter 470mm, pipe end wall thickness meets 13 3/8 " casing wall thickness requirement, install step and U-type groove, groove depth 20mm in middle part specific bit.20 " internal diameter size of conduit is 477.8mm, in order to make female 3 buttons of the second crossover flange pin thread 4 and crossover flange enter 20 smoothly " in conduit, in conjunction with on-the-spot borehole pressure, generally this specification well head pressure is less than 3000psi, surface pipe 23 weight is not more than 30 tons, consider strength of flange and the problem such as connecting bolt intensity and distributing installation, so using outside dimension is the flange of 470mm, so that it keeps the gap (practical situation and drilling technology according to every mouthful of well can could be adjusted to meet onsite application and require) of 3.9mm with pipe inner wall.Bottom is 13 3/8 " BCSG screw thread, with 13 3/8 " cannula carrier box cupling is connected, top is provided with bolt connecting hole.
Second crossover flange pin thread 4 bottom is provided with bolt connecting hole and the second crossover flange box 3 is bolted, and upper lumen is provided with 13 3/8 " the threaded even epimerite of BCSG, pipe end wall thickness meets 13 3/8 " casing wall thickness requirement.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (2)
- null1. a nothing cuts weldering recoverable integral cannula head，It is characterized in that，Including supporting fixing surface pipe and holding the screw mandrel flange of conduit tightly、Bolt screw mandrel、The the first crossover flange box docked with screw mandrel flange、The clamp nut of connection wire rod flange、Connect the second crossover flange pin thread of surface pipe、The the second crossover flange box docked with the second crossover flange pin thread，Described second crossover flange pin thread and the second crossover flange box are connected by connecting bolt，It is connected with described second crossover flange pin thread by connecting bolt and has casing head body，Described casing head body side is provided with valve、The first companion flange being connected with described valve、The first plug being connected with described first companion flange、The stop valve being connected with described first plug、The Pressure gauge being connected with described stop valve，Described casing head body opposite side is provided with the second companion flange、The second plug being connected with described second companion flange，Gasket ring is connected between described casing head body and the second companion flange，Described casing head body interior is provided with protective casing mandrel type casing hanger and seal cartridge，Described casing head body interior is additionally provided with production string mandrel type casing hanger，Described production string core axis bushing header hanger is sitting on seal cartridge，Described casing head bodies top is provided with gasket ring and bolt is connected with tubing head.
- The most according to claim 1 a kind of without cutting weldering recoverable integral cannula head, it is characterised in that described second crossover flange box external diameter and the second crossover flange pin thread external diameter are respectively less than described catheter diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521101548.1U CN205577929U (en) | 2015-12-28 | 2015-12-28 | But do not have to cut and weld whole casing head of recovery type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521101548.1U CN205577929U (en) | 2015-12-28 | 2015-12-28 | But do not have to cut and weld whole casing head of recovery type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205577929U true CN205577929U (en) | 2016-09-14 |
Family
ID=56882928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521101548.1U Expired - Fee Related CN205577929U (en) | 2015-12-28 | 2015-12-28 | But do not have to cut and weld whole casing head of recovery type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205577929U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437542A (en) * | 2016-11-27 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | High-strength oil casing pipe |
| CN109944565A (en) * | 2019-04-02 | 2019-06-28 | 宝鸡石油机械有限责任公司 | A kind of ocean dry type wellhead assembly |
-
2015
- 2015-12-28 CN CN201521101548.1U patent/CN205577929U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437542A (en) * | 2016-11-27 | 2017-02-22 | 无锡金顶石油管材配件制造有限公司 | High-strength oil casing pipe |
| CN109944565A (en) * | 2019-04-02 | 2019-06-28 | 宝鸡石油机械有限责任公司 | A kind of ocean dry type wellhead assembly |
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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: 20160914 Termination date: 20211228 |