CN2469171Y - Casing head of borehole of oil or gas - Google Patents
Casing head of borehole of oil or gas Download PDFInfo
- Publication number
- CN2469171Y CN2469171Y CN 01217781 CN01217781U CN2469171Y CN 2469171 Y CN2469171 Y CN 2469171Y CN 01217781 CN01217781 CN 01217781 CN 01217781 U CN01217781 U CN 01217781U CN 2469171 Y CN2469171 Y CN 2469171Y
- Authority
- CN
- China
- Prior art keywords
- casing head
- hanger
- sliding sleeve
- hanger body
- oil gas
- Prior art date
- 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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- Earth Drilling (AREA)
Abstract
A casing head of the oil gas well of the utility model relates to a wellhead device of petroleum and natural gas for supporting the annular space which is sealed by the casing. The structure is that the utility model has a casing head body, a double pin nipple joint is arranged at the lower part of the casing head body, adjacent path holes are arranged at both sides of the casing head body, and flat valves are arranged at the outside of the adjacent path holes. The utility model is characterized in that a setting type hanger is installed in the casing head body, the setting type hanger has a hanger body, a lock sleeve is provided in the upper part of the hanger body, an inner sliding sleeve is installed in the inner hole of the upper part of the hanger body, an inner seal ring and an inner cushion ring are installed in the hanger body of the lower part of the inner sliding sleeve, an outer seal ring, an outer cushion ring and an outer sliding sleeve are installed outside of the hanger body and a shield ring is installed in the lower part of the outer sliding sleeve.
Description
The utility model oil gas Casing head of borehole relates to is a kind of a kind of oil, natural gas well head device of the annular space that is used for the carrying sleeve sealing.
At present, the structure of conventional cannula head is generally individual layer, bilayer, three layers three kinds.Hanger in the casing head generally adopts slip-type, and its weak point has following several respects: 1, complex structure, every layer all has a main body, especially three layers of casing head.2, install loaded down with trivial details, during every one deck sleeve pipe down, all load and unload every layer casing head main body and blowout hookup respectively.3, slip-type hanger safety factor relatively low (only frictionally carrying sleeve weight) has damage to sleeve surface.Must prescind that a part of sleeve pipe of surface damage when unloading sleeve pipe after the use, and the sleeve pipe positioning performance is poor.4, the less liquid stream that is unfavorable in other hole circulates.
The purpose of this utility model is the oil gas Casing head of borehole that a kind of novelty is provided at above-mentioned weak point, casing head adopts overall structure, hanger adopts and sets the formula hanger, repertoire with original product individual layer, bilayer, three layer construction, in light weight, volume is little, compact conformation, supporting capacity are big, easy to use, safe, increase work efficiency.
The oil gas Casing head of borehole takes following scheme to realize: oil gas Casing head of borehole structure comprises the casing head body, the casing head body adopts overall structure, be equipped with in the casing head body and set the formula hanger, casing head body lower device has two public pipe nipples, two public pipe nipples outside has casing threads and links to each other with casing head body bottom, both sides, casing head body middle part are provided with other passing hole, and other passing hole outer setting has flap type.Set formula hanger structure and have the hanger body, lock sleeve is arranged at hanger body top, the lock sleeve lateral surface is equipped with lock bolt, in the endoporus of hanger body top inner sliding sleeve is housed, the open-ended place of inner sliding sleeve is embedded with the pincers tooth, and inner seal ring, interior gasket ring are housed in the hanger body of inner sliding sleeve bottom, and the hanger body exterior is equipped with exterior seal ring, outer gasket ring, outer sliding sleeve, ring washer is arranged at the outer sliding sleeve bottom, is used for guiding and prevents that outer sliding sleeve from coming off.
Oil gas Casing head of borehole purposes and function: casing head is to be used for a kind of oil, the natural gas well head device of the annular space between carrying sleeve and the Sealed casing pipe.Be used for: 1, connect down-hole casing and other wellhead assembly (as preventer, tubing head).2, Sealed casing pipe annular space avoids pressure to scurry mutually, and carries out pressure monitor.3, can carry out drilling process aspect special operation: 1) if well does not fix, can be from side opening moisturizing mud.2) when entrance pressure splits acidifying, can be from the hole fluid injection with the equilibrium oil pipe pressure.When 3) catching fire, can in well, annotate the high-pressure extinction agent by the side mouth in the shaft bottom.
Oil gas Casing head of borehole advantage:
1, adopts overall structure, saved cost of production, simplified erection procedure.
2, full well blowout hookup need only be installed once, has simplified the drilling well operation, has shortened brill
The well cycle.
3, set the formula hanger and adopt the casing coupling hang, no slip insert, carrying energy
Power is big, to the sleeve pipe not damaged.Be furnished with high strength pincers tooth and fastening screw in the hanger
Bolt is used, and can prevent effectively that sleeve pipe from reversing and producing the master and become flexible, safety
Performance is fabulous.
4, other hole is bigger, helps the circulation of liquid stream.
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is an oil gas Casing head of borehole structural representation.
Fig. 2 is that setting of oil gas Casing head of borehole deposited formula hanger structural representation.
With reference to accompanying drawing, oil gas Casing head of borehole structure comprises casing head body 1, and the casing head body adopts overall structure, is equipped with in the casing head body and sets 2～3 of formula hangers, as shown in Figure 1.Casing head body internal upper part is equipped with sealed hanger 3-1, is used for splicing sleeve 8-1, and the anti-fairlead 9 of hanging of locking is equipped with on sleeve pipe 8-1 top.Casing head body middle part is equipped with and is set formula hanger 3-2, is used for splicing sleeve 8-2.Sleeve pipe 8-1, sleeve pipe 8-2, locking is anti-hangs fairlead 9 and provides for oneself by the user.Casing head body lower device has two public pipe nipples 7, two public pipe nipples outside has casing threads and links to each other with casing head body bottom, both sides, casing head body middle part are provided with other passing hole 4-1,4-2, as shown in Figure 1, upper and lower four holes are divided in the bypass aperture, outside, bypass aperture is equipped with flap type 5-1,5-2,5-3,5-4 respectively, and flap type is connected with pipeloop flange, union, is respectively 6-1,6-2,6-3,6-4.Three fastening bolts (jackscrew) 2 are equipped with on casing head body top, are used to fasten, the spacing formula hanger 3-2 that sets.
With reference to accompanying drawing 2, the formula that sets hanger 3 structures of oil gas Casing head of borehole device have hanger body 16, and lock sleeve 10 is arranged at hanger body top, and lock sleeve 10 adopts screw 11 to fixedly connected with hanger body 16.The lock sleeve lateral surface is equipped with 4 lock bolts 21, is used for locking sleeve.In the hanger body 16 top endoporus inner sliding sleeve 13 is housed, the open-ended place of inner sliding sleeve is embedded with 4 pincers teeth 12, is used for lock sleeve tube coupling hoop, prevents that sleeve pipe from reversing and become flexible.In the inner sliding sleeve 13 bottom hanger bodies inner seal ring 15, interior gasket ring 14 are housed, are used for the Sealed casing pipe external diameter.The hanger body exterior is provided with locating slot 22 and matches to be used for fixing with fastening bolt (jackscrew) 2 and set the formula hanger.The outside of hanger body 16 bottoms is equipped with and between two exterior seal rings 18, the exterior seal ring outer gasket ring 17 is housed, outer sliding sleeve 19 is arranged at exterior seal ring 18 bottoms, and ring washer 2 is arranged at the outer sliding sleeve bottom, is used for guiding and prevents that sliding sleeve from coming off.
Claims (4)
1, a kind of oil gas Casing head of borehole, has the casing head body, casing head body lower device has two public pipe nipples, casing head body both sides are provided with other passing hole, other passing hole outer setting has flap type, it is characterized in that being equipped with in the casing head body and set the formula hanger, the formula hanger of setting has the hanger body, lock sleeve is arranged at hanger body top, and lock bolt is equipped with in the lock sleeve side, in the endoporus of hanger body top inner sliding sleeve is housed, the open-ended place of inner sliding sleeve is embedded with the pincers tooth, in the hanger body of inner sliding sleeve bottom inner seal ring is housed, interior gasket ring, the hanger body exterior is equipped with exterior seal ring, outer gasket ring, outer sliding sleeve, ring washer is arranged at the outer sliding sleeve bottom.
2, oil gas Casing head of borehole according to claim 1 is characterized in that casing head adopts overall structure.
3, oil gas Casing head of borehole according to claim 1 is characterized in that can being equipped with in the casing head body and sets 2～3 of formula hangers.
4, oil gas Casing head of borehole according to claim 1 is characterized in that the hanger body exterior is provided with locating slot and matches with fastening bolt, is used for fixing hanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217781 CN2469171Y (en) | 2001-03-07 | 2001-03-07 | Casing head of borehole of oil or gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01217781 CN2469171Y (en) | 2001-03-07 | 2001-03-07 | Casing head of borehole of oil or gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469171Y true CN2469171Y (en) | 2002-01-02 |
Family
ID=33635941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01217781 Expired - Fee Related CN2469171Y (en) | 2001-03-07 | 2001-03-07 | Casing head of borehole of oil or gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469171Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033125A (en) * | 2014-06-11 | 2014-09-10 | 昆山艾蓓蓓阀门有限公司 | Double-wellhead device applicable to 26-inch conduit |
-
2001
- 2001-03-07 CN CN 01217781 patent/CN2469171Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033125A (en) * | 2014-06-11 | 2014-09-10 | 昆山艾蓓蓓阀门有限公司 | Double-wellhead device applicable to 26-inch conduit |
| CN104033125B (en) * | 2014-06-11 | 2016-08-03 | 昆山艾蓓蓓阀门有限公司 | A kind of double-wellhead device being applicable to 26 inch conduit |
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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 |