CN203925392U - Double-seal casing pipe head - Google Patents
Double-seal casing pipe head Download PDFInfo
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- CN203925392U CN203925392U CN201420347573.7U CN201420347573U CN203925392U CN 203925392 U CN203925392 U CN 203925392U CN 201420347573 U CN201420347573 U CN 201420347573U CN 203925392 U CN203925392 U CN 203925392U
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- upper strata
- lower floor
- sealing ring
- head
- layer sleeve
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Abstract
The utility model discloses a kind of double-seal casing pipe head, double-seal casing pipe head, comprises upper strata casing head and lower floor's casing head; Described upper strata casing head comprises upper strata the first sealing ring, upper strata the second sealing ring, upper strata body, upper strata body jackscrew and upper strata slips hanger for sealed suspension inner layer sleeve, lower floor's casing head, for sealed suspension outer layer sleeve, comprises lower floor's the first sealing ring, lower floor's the second sealing ring, lower floor's body, lower floor's body jackscrew and lower floor's slips hanger.Double-seal casing pipe head of the present utility model adopts upper and lower layer Dual-sealing structure, in every layer of hermetically-sealed construction, establish again upper and lower two sealing rings, the sealing performance of casing head is improved greatly, structure of the present utility model and cooperation are very simple, make a trip in any case all can safety support, the fixing casing string of G.I.H, the safety factor that has improved greatly operation, can realize quick control well head.
Description
Technical field
The utility model relates to a kind of double-seal casing pipe head, belongs to petroleum machinery field.
Background technology
Casing head is when oil, gas, well carry out drilling well, in order to control fixedly well head, and support, the fixing casing string of G.I.H, blowout preventer set is installed, and with screw thread or flange, is connected and is seated the important supporting connection device of a kind of oil recovery (gas) wellhead assembly of outer layer sleeve with casing string top.The sealing of casing head is very important for construction safety, while particularly there is the blowout phenomenons such as overflow, well kick in running into well, seems particularly important.The casing head of prior art is individual layer hermetically-sealed construction, only in the lower end of slips hanger, is provided with a BT sealing ring sealing, at borehole pressure, occurs that, in unsettled situation, the sealing effectiveness of sealing ring can be affected, and is unfavorable for controlling fast the blowout phenomenon of well head.
Utility model content
For overcoming the deficiencies in the prior art, the utility model provides a kind of double-seal casing pipe head of good seal performance.
The technical scheme that the utility model is taked is: a kind of double-seal casing pipe head, comprises upper strata casing head and lower floor's casing head;
Described upper strata casing head is for sealed suspension inner layer sleeve, described upper strata casing head comprises upper strata the first sealing ring, upper strata the second sealing ring, upper strata body, upper strata body jackscrew and upper strata slips hanger, described upper strata body is circular cylindrical structure, upper strata chamber body is provided with interior step, upper strata the second sealing ring is positioned on the step of upper strata body, upper strata slips hanger edge is seated on the second sealing ring of upper strata, be used for hanging inner layer sleeve, upper strata the first sealing ring is positioned on the slips hanger of upper strata, upper strata the first sealing ring, upper strata the second sealing ring and upper strata slips hanger are all positioned at upper strata chamber body, upper strata the first sealing ring and upper strata the second sealing ring are for the sealing between inner layer sleeve and upper strata body, described upper strata body jackscrew passes from the body of upper strata, front end contacts with upper strata the first sealing ring,
Described lower floor casing head is for sealed suspension outer layer sleeve, described lower floor casing head comprises lower floor's the first sealing ring, lower floor's the second sealing ring, lower floor's body, lower floor's body jackscrew and lower floor's slips hanger, described lower floor body is circular cylindrical structure, with upper strata body be an integral body, lower floor's chamber body is provided with interior step, lower floor's the second sealing ring is positioned on the step of lower floor's body, lower floor's slips hanger edge is seated on lower floor's the second sealing ring, be used for hanging outer layer sleeve, inner layer sleeve is arranged in outer layer sleeve, lower floor's the first sealing ring is positioned on lower floor's slips hanger, lower floor's the first sealing ring, lower floor's the second sealing ring and lower floor's slips hanger are all positioned at lower floor's chamber body, lower floor's the first sealing ring and lower floor's the second sealing ring are for the sealing between outer layer sleeve and lower floor's body, described lower floor body jackscrew passes from lower floor's body, front end contacts with lower floor the first sealing ring.
As the preferred technical scheme of the utility model, also comprise manual flat valve, described upper strata body and lower floor's body junction are provided with side opening, and manual flat valve is for the opening and closing of side opening.
As the preferred technical scheme of the utility model, described upper strata the first sealing ring, upper strata the second sealing ring, lower floor's the first sealing ring, lower floor's the second sealing ring are BT sealing ring.
Double-seal casing pipe head of the present utility model adopts upper and lower layer Dual-sealing structure, in every layer of hermetically-sealed construction, establish again upper and lower two sealing rings, the sealing performance of casing head is improved greatly, structure of the present utility model and cooperation are very simple, make a trip in any case all can safety support, the fixing casing string of G.I.H, the safety factor that has improved greatly operation, can realize quick control well head.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-seal casing pipe head of the present utility model.
Fig. 2 is the structural representation of the upper strata casing head of double-seal casing pipe head of the present utility model
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is done further and illustrated.
The specific embodiment
embodiment 1
This double-seal casing pipe head, comprises upper strata casing head and lower floor's casing head;
Described upper strata casing head is for sealed suspension inner layer sleeve 1, described upper strata casing head comprises upper strata the first sealing ring 2, upper strata the second sealing ring 3, upper strata body 4, upper strata body jackscrew 5 and upper strata slips hanger 6, described upper strata body 4 is circular cylindrical structure, body 4 inner chambers in upper strata are provided with interior step 41, upper strata the second sealing ring 3 is positioned on the step of upper strata body 4, slips hanger 6 edges in upper strata are seated on the second sealing ring 3 of upper strata, be used for hanging inner layer sleeve 1, upper strata the first sealing ring 2 is positioned on upper strata slips hanger 6, upper strata the first sealing ring 2, upper strata slips hanger 6 and upper strata the second sealing ring 3 are all positioned at upper strata body 4 inner chambers, inner layer sleeve 1 is suspended on upper strata slips hanger 6, upper strata the first sealing ring 2 and upper strata the second sealing ring 3 are all for the sealing between inner layer sleeve 1 and upper strata body 4, described upper strata body jackscrew 5 passes from upper strata body 4, front end contacts with upper strata the first sealing ring 2, upper strata the first sealing ring, upper strata the second sealing ring is BT sealing ring,
Described lower floor casing head is for sealed suspension outer layer sleeve 7, described lower floor casing head comprises lower floor's the first sealing ring 8, lower floor's the second sealing ring 9, lower floor's body 10, body jackscrew 11He lower floor of lower floor slips hanger 12, described lower floor body 10 is circular cylindrical structure, with upper strata body 4 be an integral body, lower floor's body 10 inner chambers are provided with interior step, lower floor's the second sealing ring 9 is positioned on the step of lower floor's body 10, lower floor's slips hanger 12 edges are seated on lower floor's the second sealing ring, be used for hanging outer layer sleeve 7, inner layer sleeve 1 is arranged in outer layer sleeve 7, lower floor's the first sealing ring 8 is positioned on lower floor's slips hanger 12, lower floor's the first sealing ring 8, slips hanger 12He lower floor of lower floor the second sealing ring 9 is all positioned at lower floor's body 10 inner chambers, outer layer sleeve 7 is suspended on lower floor's slips hanger 12, inner layer sleeve 1 is arranged in outer layer sleeve 7, lower floor's the first sealing ring 8 and lower floor's the second sealing ring 9 are all for the sealing between outer layer sleeve 7 and lower floor's body 10, in body jackscrew 11Cong lower floor of described lower floor body 10, pass, front end contacts with lower floor the first sealing ring 8.Also comprise manual flat valve 13, described upper strata body 4 is provided with side opening 14 with lower floor's body 10 junctions, and manual flat valve 13 is for the opening and closing of side opening.
This double-seal casing pipe head, upper strata casing head is substantially the same with the structure of lower floor's casing head.In the casing head of upper strata, upper strata the second sealing ring is positioned on the step of upper strata body, and the weight of dependence inner layer sleeve realizes the first resealing of inner layer sleeve, and upper strata the first sealing ring relies on the extruding of upper strata body jackscrew to realize the second resealing of inner layer sleeve.In lower floor's casing head, lower floor's the second sealing ring is positioned on the step of lower floor's body, and the weight of dependence outer layer sleeve realizes the first resealing of outer layer sleeve, and lower floor's the first sealing ring relies on the extruding of lower floor's body jackscrew to realize the second resealing of outer layer sleeve.Manual flat valve is positioned at, and the side opening place between lower floor's body, works to block borehole fluid or gas, in emergency circumstances also can prevent the generation of gas blowout accident.Upper strata body upper flange connects blowout prevention four-way or production tree, forms a whole set of control head.
Claims (3)
1. a double-seal casing pipe head, comprises upper strata casing head and lower floor's casing head;
Described upper strata casing head is for sealed suspension inner layer sleeve, described upper strata casing head comprises upper strata the first sealing ring, upper strata the second sealing ring, upper strata body, upper strata body jackscrew and upper strata slips hanger, described upper strata body is circular cylindrical structure, upper strata chamber body is provided with interior step, upper strata the second sealing ring is positioned on the step of upper strata body, upper strata slips hanger edge is seated on the second sealing ring of upper strata, be used for hanging inner layer sleeve, upper strata the first sealing ring is positioned on the slips hanger of upper strata, upper strata the first sealing ring, upper strata the second sealing ring and upper strata slips hanger are all positioned at upper strata chamber body, upper strata the first sealing ring and upper strata the second sealing ring are for the sealing between inner layer sleeve and upper strata body, described upper strata body jackscrew passes from the body of upper strata, front end contacts with upper strata the first sealing ring,
Described lower floor casing head is for sealed suspension outer layer sleeve, described lower floor casing head comprises lower floor's the first sealing ring, lower floor's the second sealing ring, lower floor's body, lower floor's body jackscrew and lower floor's slips hanger, described lower floor body is circular cylindrical structure, with upper strata body be an integral body, lower floor's chamber body is provided with interior step, lower floor's the second sealing ring is positioned on the step of lower floor's body, lower floor's slips hanger edge is seated on lower floor's the second sealing ring, be used for hanging outer layer sleeve, inner layer sleeve is arranged in outer layer sleeve, lower floor's the first sealing ring is positioned on lower floor's slips hanger, lower floor's the first sealing ring, lower floor's the second sealing ring and lower floor's slips hanger are all positioned at lower floor's chamber body, lower floor's the first sealing ring and lower floor's the second sealing ring are for the sealing between outer layer sleeve and lower floor's body, described lower floor body jackscrew passes from lower floor's body, front end contacts with lower floor the first sealing ring.
2. double-seal casing pipe head according to claim 1, is characterized in that: also comprise manual flat valve, described upper strata body and lower floor's body junction are provided with side opening, and manual flat valve is for the opening and closing of side opening.
3. double-seal casing pipe head according to claim 1 and 2, is characterized in that: described upper strata the first sealing ring, upper strata the second sealing ring, lower floor's the first sealing ring, lower floor's the second sealing ring are BT sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347573.7U CN203925392U (en) | 2014-06-27 | 2014-06-27 | Double-seal casing pipe head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347573.7U CN203925392U (en) | 2014-06-27 | 2014-06-27 | Double-seal casing pipe head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925392U true CN203925392U (en) | 2014-11-05 |
Family
ID=51821221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420347573.7U Expired - Fee Related CN203925392U (en) | 2014-06-27 | 2014-06-27 | Double-seal casing pipe head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925392U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321007A (en) * | 2016-08-31 | 2017-01-11 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | WE type slip casing suspender with double U-shaped sealing ring structure |
-
2014
- 2014-06-27 CN CN201420347573.7U patent/CN203925392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321007A (en) * | 2016-08-31 | 2017-01-11 | 宝鸡石油机械有限责任公司广汉钻采设备厂 | WE type slip casing suspender with double U-shaped sealing ring structure |
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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: 20141105 Termination date: 20190627 |