CN201310304Y - Oil-gas casing metal sealing device - Google Patents
Oil-gas casing metal sealing device Download PDFInfo
- Publication number
- CN201310304Y CN201310304Y CNU2008202235783U CN200820223578U CN201310304Y CN 201310304 Y CN201310304 Y CN 201310304Y CN U2008202235783 U CNU2008202235783 U CN U2008202235783U CN 200820223578 U CN200820223578 U CN 200820223578U CN 201310304 Y CN201310304 Y CN 201310304Y
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- CN
- China
- Prior art keywords
- packing ring
- metal sealing
- metallic packing
- way
- sleeve pipe
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Abstract
The utility model discloses an oil-gas casing metal sealing device, which comprises a tubing-head four-way, a casing head four-way and a casing, wherein the tubing-head four-way and the casing head four-way are connected through a bolt, the casing is arranged on the bottom of the perpendicular hole of the casing head four-way, two sealing cavities are arranged on the corresponding positions of the inner hole to the casing, one of the sealing cavities is provided with a rubber P-shape sealing ring, and the other sealing cavity is provided with an upper seat and a lower seat of a metal sealing ring and a metal sealing ring. And the upper portion and the lower portion of the metal sealing ring are respectively provided with grooves which are inversely arranged, and the metal sealing ring is in an H-shape, and the caliber of the groove is gradually enlarged from inside to outside, and the upper seat and the lower seat of the metal sealing ring are projected in an inverse taper, the caliber of the metal sealing ring is gradually enlarged from outside to inside, and is matched with the groove on the metal sealing ring. The metal sealing device makes the metal sealing ring receive even force after adopting a unique metal sealing part, and still keeps the excellent sealing performance under high temperature and low temperature, and increases the service life of the tubing-head four-way and the casing.
Description
Technical field:
The utility model belongs to the petroleum machinery technical field, relates to the sealing device that the tubing head four-way and the casing head spool of suspension tubing and casing are adopted in the drilling operation course on the oil gas well site, specifically is a kind of oil gas sleeve pipe metal sealing device.
Background technology:
The BT type that is sealed into and the rubber seal of P type of casing head, casing head spool, tubing head four-way and the sleeve pipe (or casing hanger) in oil gas well site at present, it utilizes grease gun to inject high pressure sealing fat in the rubber seal cavity and sealing ring and sleeve pipe (or casing hanger) is fitted tightly set up sealing, this sealing means should be by the high-pressure grease pouring device of special use, use special-purpose stop-leak compound again, complex operation, working strength is big, efficient is low.And the temperature range that rubber seal is suitable for is narrower, operating pressure in, use under the low pressure operating mode, under high temperature or low temperature and high-pressure environment, seepage appears in sealing position easily, effect is very undesirable, influence programming (as Chinese patent literature disclosed a kind of " combination sealing formula well head shunting main body ", publication number: CN2430539).
China's utility model patent " metallic seal tubing head " (publication number: CN201024912), a kind of structure of metallic seal tubing head is disclosed, it is for reaching sealing, comprise housing, the tubing hanger that is used to hang oil pipe is equipped with on the top of the upright opening of housing, case top is provided with upper flange, the bottom is provided with lower flange, between case top and the upper flange, pass through double-screw bolt between housing bottom and the lower flange respectively, nut interconnects, housing upright opening bottom is provided with a sleeve pipe, be provided with an annular seal space with the sleeve pipe opposite position on the housing, be provided with the outer conical ring of the metal material that is used for Sealed casing pipe in the sealing chamber, conical ring in the metal material, metal material compacting ring and metal material gasket ring, the outer conical ring of its metal material, conical ring in the metal material, metal material compacting ring and metal material gasket ring are all between fixing and housing and the lower flange.Though this technology has realized can be high temperature resistant and the metallic seal tubing head four-way of low temperature, the stressed distribution of the contact surface of its sealing and sealing surface is all inhomogeneous, causes poor sealing, do not reach desirable effect.
Summary of the invention:
The purpose of this utility model is in order to overcome above-mentioned the deficiencies in the prior art, a kind of oil gas sleeve pipe metal sealing device of good airproof performance to be provided.
The utility model is to adopt such technical scheme to realize:
A kind of oil gas sleeve pipe metal sealing device, comprise tubing head four-way, casing head spool and sleeve pipe, the upper flange that the reducing linkage of described tubing head four-way connects is connected by bolt with casing head spool with lower flange, the upright opening bottom of tubing head four-way is provided with sleeve pipe, the corresponding position of the endoporus of tubing head four-way and sleeve pipe is provided with two annular seal spaces, has rubber P RunddichtringO in one of them annular seal space; Be provided with following of the metallic packing ring seat of honour, metallic packing ring and metallic packing ring in another annular seal space, the groove that described metallic packing ring upper and lower part has opposed respectively, this metallic packing ring is " H " shape, the groove bore enlarges from inside to outside gradually, following of the described metallic packing ring seat of honour and metallic packing ring are opposite taper and protrude, the bore ecto-entad enlarges gradually, matches with groove on the metallic packing ring.
The described metallic packing ring seat of honour is provided with metallic gasket.
Described metallic packing ring two outer middle side parts have a recessed step respectively.
Described metallic packing ring two outsides have one respectively near place, upper and lower end and protrude step.
The utility model is compared with prior art and aforesaid two patents, has following advantage:
1. adopt unique metal seal, make metallic packing ring evenly stressed, can under harsh working environment such as high temperature and low temperature, still can keep excellent sealing performance.
2. improved the application life of tubing head four-way and sleeve pipe.
3. improved operating efficiency, indirect increase oil and gas production.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings:
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the enlarged drawing of the local A of Fig. 1.
Code name implication among the figure: 1-tubing head four-way; The 2-P RunddichtringO; The 3-metallic packing ring seat of honour; The 4-metallic packing ring; Following of 5-metallic packing ring; The 6-casing head spool; The 7-sleeve pipe; The 8-metallic gasket; 9-greasing hole.
The specific embodiment:
Referring to Fig. 1,2, the utility model comprises tubing head four-way 1, casing head spool 6 and sleeve pipe 7, the upper flange that the reducing linkage of tubing head four-way 1 connects and lower flange and casing head spool 6 are connected by bolt, the upright opening bottom of tubing head four-way 1 is provided with sleeve pipe 7, the endoporus of tubing head four-way 1 and sleeve pipe 7 corresponding positions are provided with two annular seal spaces, has rubber P RunddichtringO 2 in one of them annular seal space, the interior accent of P RunddichtringO 2 outwardly, radial arrangement, corresponding with the greasing hole 9 of opening on the tubing head four-way 1, utilize the injection moulding rifle in the cavity of rubber P RunddichtringO 2, to inject high pressure sealing fat, make it excite P RunddichtringO 2 and sleeve pipe 7 to fit tightly and reach sealing effectiveness by greasing hole 9; Be provided with the metallic packing ring seat of honour 3 in another annular seal space, following 5 of metallic packing ring 4 and metallic packing ring, on the metallic packing ring 4, the bottom has the groove of opposed respectively, this metallic packing ring 4 is " H " shape, the groove bore enlarges from inside to outside gradually, this metallic packing ring 4 fixes endoporus opposite position at the external diameter of sleeve pipe 7 and tubing head four-way 1 to play sealing function, following 5 of the metallic packing ring seat of honour 3 and metallic packing ring are opposite taper and protrude, the bore ecto-entad enlarges gradually, groove on the stifled tight metallic packing ring 4, make metallic packing ring 4 stressed even, use matches with groove on the metallic packing ring 4, when the upper flange that connects at the reducing linkage of tubing head four-way 1 and lower flange and casing head spool 6 are connected by bolt, under the effect of the pretightning force of bolt, on the metallic packing ring, groove on the taper projecting surface extrusion metal joint ring 4 of following seat, impel the both sides of metallic packing ring 4 outwards to expand, with the sealing between the endoporus of the external diameter that reaches sleeve pipe 7 and tubing head four-way 1, metallic gasket 8 can be set on the metallic packing ring seat of honour 3, so that sealing effectiveness is better, in order to reach better sealing effectiveness, can reduce the contact of sealing surface, concentrate the stressed of sealing surface, middle side part is provided with a recessed step outside 4 liang of metallic packing rings, allow 4 liang of outsides of metallic packing ring on, the bottom is a sealing surface, contact sleeve pipe 7 and tubing head four-way 1, also can 4 liang of outsides of metallic packing ring near on, lower end is provided with one respectively and protrudes step, with this step is sealing surface, contact sleeve pipe 7 and tubing head four-way 1, on two outsides of metallic packing ring 4, following twice are protruded on the endoporus that the rank sealing surface is pressed in the external diameter of sleeve pipe 7 and tubing head four-way 1 uniformly, make its more effective sealing.
The utility model adopts unique metal seal, makes metallic packing ring evenly stressed, can still can keep excellent sealing performance under harsh working environment such as high temperature and low temperature, has improved the application life of tubing head four-way and sleeve pipe.
Claims (4)
1. oil gas sleeve pipe metal sealing device, comprise tubing head four-way (1), casing head spool (6) and sleeve pipe (7), the upper flange that the reducing linkage of described tubing head four-way (1) connects is connected by bolt with casing head spool (6) with lower flange, the upright opening bottom of tubing head four-way (1) is provided with sleeve pipe (7), the endoporus of tubing head four-way (1) and the corresponding position of sleeve pipe (7) are provided with two annular seal spaces, have rubber P RunddichtringO (2) in one of them annular seal space; Be provided with the metallic packing ring seat of honour (3), metallic packing ring (4) and following of metallic packing ring (5) in another annular seal space, it is characterized in that: the groove that described metallic packing ring (4) upper and lower part has opposed respectively, this metallic packing ring (4) is " H " shape, the groove bore enlarges from inside to outside gradually, the described metallic packing ring seat of honour (3) and metallic packing ring following (5) are opposite taper and protrude, the bore ecto-entad enlarges gradually, matches with groove on the metallic packing ring (4).
2. oil gas sleeve pipe metal sealing device according to claim 1 is characterized in that: the described metallic packing ring seat of honour (3) is provided with metallic gasket (8).
3. oil gas sleeve pipe metal sealing device according to claim 1 is characterized in that: described metallic packing ring (4) two outer middle side parts have a recessed step respectively.
4. oil gas sleeve pipe metal sealing device according to claim 1 is characterized in that: described metallic packing ring (4) two outsides have one respectively near place, upper and lower end and protrude step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235783U CN201310304Y (en) | 2008-12-19 | 2008-12-19 | Oil-gas casing metal sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202235783U CN201310304Y (en) | 2008-12-19 | 2008-12-19 | Oil-gas casing metal sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201310304Y true CN201310304Y (en) | 2009-09-16 |
Family
ID=41107558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202235783U Expired - Lifetime CN201310304Y (en) | 2008-12-19 | 2008-12-19 | Oil-gas casing metal sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201310304Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102549233A (en) * | 2009-10-20 | 2012-07-04 | 阿克海底公司 | Metal seal |
| CN103620241A (en) * | 2011-03-28 | 2014-03-05 | 株式会社富士金 | Fastening device for lower tier members and fluid control device furnished with same |
| CN105443066A (en) * | 2014-09-24 | 2016-03-30 | 中国石油天然气股份有限公司 | Low temperature-resistant oil pipe hanger |
| CN107143298A (en) * | 2017-06-07 | 2017-09-08 | 德州联合石油机械有限公司 | Oil well head annular space sealing device |
-
2008
- 2008-12-19 CN CNU2008202235783U patent/CN201310304Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102549233A (en) * | 2009-10-20 | 2012-07-04 | 阿克海底公司 | Metal seal |
| CN102549233B (en) * | 2009-10-20 | 2015-05-06 | 阿克海底公司 | Metal seal |
| CN103620241A (en) * | 2011-03-28 | 2014-03-05 | 株式会社富士金 | Fastening device for lower tier members and fluid control device furnished with same |
| CN103620241B (en) * | 2011-03-28 | 2016-05-18 | 株式会社富士金 | The fixture of lower part and there is the fluid control device of this fixture |
| CN105443066A (en) * | 2014-09-24 | 2016-03-30 | 中国石油天然气股份有限公司 | Low temperature-resistant oil pipe hanger |
| CN105443066B (en) * | 2014-09-24 | 2018-02-02 | 中国石油天然气股份有限公司 | A kind of low temperature resistant boll-weevil hanger |
| CN107143298A (en) * | 2017-06-07 | 2017-09-08 | 德州联合石油机械有限公司 | Oil well head annular space sealing device |
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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 |
Granted publication date: 20090916 |
|
| CX01 | Expiry of patent term |