CN2789405Y - Single-stage assembling cashinghead - Google Patents
Single-stage assembling cashinghead Download PDFInfo
- Publication number
- CN2789405Y CN2789405Y CN 200520079953 CN200520079953U CN2789405Y CN 2789405 Y CN2789405 Y CN 2789405Y CN 200520079953 CN200520079953 CN 200520079953 CN 200520079953 U CN200520079953 U CN 200520079953U CN 2789405 Y CN2789405 Y CN 2789405Y
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- CN
- China
- Prior art keywords
- flange
- housing
- combined type
- stage combined
- casing body
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- 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
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Abstract
The utility model relates to a petroleum well head device, particularly a single-stage combined type cashing pipe head used for connecting the petroleum well in the down direction, when a well is drilled, the single-stage combined type cashing pipe head is used for connecting a blowout preventer in the up direction, and after the well is completed, the single-stage combined type cashing head is used for connecting a christmas tree in the up direction. The utility model has the technical scheme that the device comprises a casing body 3, a flange 13 and a transitional sealing disk 15, wherein the connection between the casing body 3 and the flange 13 is in demountable separate type connection which comprises screw connection or tooth inlaid connection or pin connection, and a rotation stopping rod 12 is arranged at the combining part of the flange 13 and the casing body 3 in the horizontal direction or the vertical direction; the upper end face of the casing body 3 is distributed with a plurality of screw holes 2 in a separate mode, and the screw holes 2 is connected and matched with a flange 8 of an oil pipe head. The proposal also comprises the inner cavity of the upper part of the casing body 3 is sheathed with a suspending body 6, annular grooves are arranged on the upper end face of the suspending body 6 and the involutory face of the flange 8 of an oil pipe head, sealing gaskets 7 are arranged in the annular grooves and the combining part of the lower part of the suspending body 6 and the inner wall of the casing body 3 is provided with a sealing ring 5. The utility model has the outstanding effects that the production costs of a casing pipe head and the christmas tree are saved, and the utility model provides convenience for the management and the installation after the well is completed.
Description
One, technical field: the utility model relates to a kind of oil well head device, specifically is a kind of underground pipe casing that connects down oil well, takes over control spray apparatus on during drilling well, connects the single-stage combined type casing head of production tree on after the completion.
Two, background technology: housing and the flange of producing the single-stage casing head that uses at present are overall structure.The flange of casing head realizes that with the preventer lower flange of top high strength is connected during drilling well, and realizes the high pressure sealing of interior exocoel by the metal gasket ring.And production tree after the completion be connected to by inner chamber parts with casing head casing head above, the trap flange of tube head of so most of situation is left unused, and has been one-time fixed on well head with housing.
Three, summary of the invention: the purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of single-stage combined type casing head is provided.
Its technical scheme is: comprise housing 3, flange 13 and transition seal disc 15 compositions.Be that dismountable split connects between housing 3 and the flange 13, comprise being threaded or tooth embedding connection or pin connection, be provided with dog link 12 in flange 13 and housing 3 joint portion horizontal directions or vertical direction.Be intervally distributed with several screws 2 in the upper surface of housing 3, screw 2 is connected cooperation with tubing-head adapter flange 8.
Such scheme comprises that also housing 3 top inner chambers are set with suspension body 6, and the involutory surface of the upper surface of suspension body 6 and tubing-head adapter flange 8 is provided with cannelure, and device has sealing mat 7 in the cannelure, and the joint portion of the bottom of suspension body 6 and housing 3 inwalls is provided with joint ring 5.Be respectively equipped with the cannelure that cooperates with gasket ring 16,14 on the upper and lower end face of transition seal disc 15, be provided with the cannelure 1 that cooperates with gasket ring 14 in the upper surface of housing 3.Several sealing jackscrews 10 and seal pressure cap 11 in the side of transition seal disc 15 radial distribution.
Outstanding effect of the present utility model is: the one, save production cost significantly, and the 2nd, provide convenience to management after the completion and installation.
Four, description of drawings:
Accompanying drawing 1 is the mounting structure schematic diagram of the utility model under drilling state;
Five, the specific embodiment:
With reference to accompanying drawing 1, under drilling state, housing 3 of the present utility model is designed to the branch body structure with flange 13, and flange 13 can be installed together with multiple modes such as screw thread, tooth embedding, pins with housing 3, makes the two become the moving assembly of a mutual spline by dog link 12 again.In the upper surface of housing 3 and flange 13 excessive seal disc 15 is set.Excessively seal disc 15 tops are by gasket ring 16, and the below makes wellhead assembly realize the high pressure sealing of interior exocoel by gasket ring 14.11 several of high pressure sealing jackscrew 10 and seal pressure caps radially are installed, with the effect of the high pressure sealing jackscrew that replaces in existing CHF, installing in the side of transition seal disc 15.Like this when preventer flange 9 with after flange 13 is connected, make the interior exocoel of wellhead assembly realize high pressure sealing by gasket ring 14,16 and transition seal disc 15.
With reference to accompanying drawing 2, after the completion, can all disassemble seal disc 15 related sealing jackscrews 10 and flange 13 related dog links 12, reuse, just housing has been permanently affixed on the well head once.This moment, housing 3 was installed in the upper end of down-hole casing 4, and the cannelure 1 of the gasket ring 14 of the upper surface of housing 3 is idle.Housing 3 top inner chambers are with suspension body 6, and the involutory surface of the upper surface of suspension body 6 and tubing-head adapter flange 8 is provided with cannelure, and device has sealing mat 7 in the cannelure, and the joint portion of the bottom of suspension body 6 and housing 3 inwalls is provided with joint ring 5.Be intervally distributed with several screws 2 in the upper surface of housing 3, screw 2 is connected cooperation with the tubing-head adapter flange 8 of well head production tree.Like this by sealing mat 7, suspension body 6, and joint ring 5 realized high pressure sealing with the interior exocoel of wellhead assembly.
Claims (5)
1, a kind of single-stage combined type casing head, comprise housing (3), flange (13) and transition seal disc (15) composition, it is characterized in that: connect for dismountable split between housing (3) and the flange (13), be intervally distributed with several screws (2) in the upper surface of housing (3), screw (2) is connected cooperation with tubing-head adapter flange (8).
2, single-stage combined type casing head according to claim 1, it is characterized in that: for being threaded or tooth embedding connection or pin connection, be provided with dog link (12) between housing (3) and the flange (13) in flange (13) and housing (3) joint portion horizontal direction or vertical direction.
3, single-stage combined type casing head according to claim 2, it is characterized in that: housing (3) top inner chamber is set with suspension body (6), the involutory surface of the upper surface of suspension body (6) and tubing-head adapter flange (8) is provided with cannelure, device has sealing mat (7) in the cannelure, and the joint portion of the bottom of suspension body (6) and housing (3) inwall is provided with joint ring (5).
4, according to claim 2 or 3 described single-stage combined type casing heads, it is characterized in that: be respectively equipped with the cannelure that cooperates with gasket ring (16,14) on the upper and lower end face of transition seal disc (15), be provided with the cannelure (1) that cooperates with gasket ring (14) in the upper surface of housing (3).
5, single-stage combined type casing head according to claim 4 is characterized in that: several sealing jackscrews (10) and seal pressure cap (11) in the side radial distribution of transition seal disc (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079953 CN2789405Y (en) | 2005-01-07 | 2005-01-07 | Single-stage assembling cashinghead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520079953 CN2789405Y (en) | 2005-01-07 | 2005-01-07 | Single-stage assembling cashinghead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2789405Y true CN2789405Y (en) | 2006-06-21 |
Family
ID=36789736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520079953 Expired - Fee Related CN2789405Y (en) | 2005-01-07 | 2005-01-07 | Single-stage assembling cashinghead |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2789405Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281633A (en) * | 2018-12-13 | 2019-01-29 | 美钻深海能源科技研发（上海）有限公司 | A kind of preventer group assembly method and tooling for protecting metal sealing cushion ring |
| CN109339730A (en) * | 2018-12-13 | 2019-02-15 | 美钻深海能源科技研发（上海）有限公司 | A kind of test blind flange and preventer encapsulating method for protecting metal sealing cushion ring |
-
2005
- 2005-01-07 CN CN 200520079953 patent/CN2789405Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281633A (en) * | 2018-12-13 | 2019-01-29 | 美钻深海能源科技研发（上海）有限公司 | A kind of preventer group assembly method and tooling for protecting metal sealing cushion ring |
| CN109339730A (en) * | 2018-12-13 | 2019-02-15 | 美钻深海能源科技研发（上海）有限公司 | A kind of test blind flange and preventer encapsulating method for protecting metal sealing cushion ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |