CN2797611Y - Straight-through type fracture wellhead casing protector - Google Patents
Straight-through type fracture wellhead casing protector Download PDFInfo
- Publication number
- CN2797611Y CN2797611Y CN 200520015872 CN200520015872U CN2797611Y CN 2797611 Y CN2797611 Y CN 2797611Y CN 200520015872 CN200520015872 CN 200520015872 CN 200520015872 U CN200520015872 U CN 200520015872U CN 2797611 Y CN2797611 Y CN 2797611Y
- Authority
- CN
- China
- Prior art keywords
- well head
- fracture
- spring
- straight
- casing tube
- 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
Links
Abstract
The utility model relates to a fracture-well head casing tube protector of a straight through type, which is used for matching the exploration, the development and the fracture of an oil field, and the fracture-well head casing tube protector comprises an upper joint 1, male pins 2, a sealing ring 3, a ball head 4, a limited card 5, a spring 6, a guide body 7 and a buffer spring 8, wherein the upper joint 1 is connected with the ball head 4 through the male pins 2, the sealing ring 3 is arranged between the upper joint 1 and the ball head 4, the buffer spring 8 is arranged in the guide body 7 and the spring 6 is arranged in the limited card 5. The utility model has the advantages of simple structure, reasonable design, convenient operation, small volume, light weight, etc., has no redirection for high pressure liquid flow, and can ensure the convenience of instant decompression and tube line connection and the practicability of field operation is enhanced. When an oil tube outwards runs up in fracture construction, the safety hazard of a casing tube and a well head does not exist and the purpose of nicely protecting the casing tube and the well head is achieved.
Description
Technical field:
The utility model relates to the straight fracture well head casing protector of a kind of oil field prospecting, the use of exploitation cooperation pressure break.
Background technology:
At present, each oil field also finds no when pressing crack construction uses straight fracture well head casing protection apparatus, causes often to keep safety and hidden dangers in project in the construction, causes great safety and engineering accident.
Summary of the invention:
The purpose of this utility model is to provide a kind of straight fracture well head casing protection apparatus that is simple and easy to usefulness widely, can remove safety and hidden dangers in project, avoids causing great safety and engineering accident.
The utility model is achieved in that and comprises top connection 1, pin 2, O-ring seal 3, bulb 4, spacing card 5, spring 6, guide way 7, buffer spring 8, top connection 1 is connected by pin 2 with bulb 4, be provided with O-ring seal 3 between top connection 1 and the bulb 4, buffer spring 8 is housed in the guide way 7, in the spacing card 5 spring 6 is arranged.
The utility model also adopts following technical scheme:
Be processed with projection on the guide way 7.
The projection of guide way 7 at least more than one.
Fluted passage in the guide way 7.
Advantage of the present utility model is: it is opened the thinking mode according to the superpressure of safety valve and overflow valve and is transformed research, the safety valve compressed spring type opened to change into cut off peg type and open, the designs fix opening pressure, need not increase pressure regulation setting and return mechanism again, spacing getting final product before and after only requiring, the safety guarantee effect of well head and sleeve pipe in the time of just playing superpressure.This kind straight protector is oil pipe to take place during according to pressure break scurry phenomenon outward, and moment is removed safety and hidden dangers in project design.One end is connected a side of sleeve gate during pressure break, and an end connects relief line, and liquid promotes the bulb motion during superpressure, and high-pressure fluid is not changed its course, and the straight line ejection reduces unlocking resistance, reaches the purpose of quick pressure releasing.Description of drawings: the purpose of this utility model realizes by following measure: a kind of straight fracture well head casing protector that is used for oil field cooperation pressing crack construction; when the sleeve pipe internal pressure reaches the opening pressure of protector design; the bulb 4 that relies on cushion rubber 3 to be in sealing state with top connection 1 is forced to cut off pin 2, reaches the purpose of moment unlatching.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
As shown in the figure, when oil jacket was communicated with superpressure, bulb 4 was cut off pin 2, and highly pressurised liquid reaches the moment pressure release by the inner chamber straight line ejection of guide way 7, plays the purpose of protection well head and sleeve pipe.
Bulb 4 is along the internal projections rectilinear motion of guide way 7, and liquid stream is taken their own roads along the ejection of the groove between three projections; The sphere of bulb 4 direct high pressure liquid smoothly and apace flows to into guide way 7 inner groovy passages, reaches the purpose of moment pressure release; The bulb 4 of high-speed motion, the buffer spring 8 of compression band stopper releases energy, and stops it to continue motion; Spring 8 releases energy and promotes bulb 4 toward swivel motion, and spacing card 5 relies on spring 6 to support prevention bulb 4 further toward swivel motion; Overpressure fluid forces the tight bulb 4 of sealing to cut off pin 2, opens fluid course, reaches the pressure release purpose.
Claims (4)
1, a kind of straight fracture well head casing protector; comprise top connection (1), pin (2), O-ring seal (3), bulb (4), spacing card (5), spring (6), guide way (7), buffer spring (8); it is characterized in that: top connection (1) is connected by pin (2) with bulb (4); be provided with O-ring seal (3) between top connection (1) and the bulb (4); buffer spring (8) is housed in the guide way (7), spring (6) is arranged in the spacing card (5).
2, a kind of straight fracture well head casing protector according to claim 1, it is characterized in that: guide way is processed with projection on (7).
3, a kind of straight fracture well head casing protector according to claim 1 is characterized in that: the projection of guide way (7) at least more than one.
4, a kind of straight fracture well head casing protector according to claim 1 is characterized in that: fluted passage in the guide way (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015872 CN2797611Y (en) | 2005-04-29 | 2005-04-29 | Straight-through type fracture wellhead casing protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520015872 CN2797611Y (en) | 2005-04-29 | 2005-04-29 | Straight-through type fracture wellhead casing protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797611Y true CN2797611Y (en) | 2006-07-19 |
Family
ID=36868851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520015872 Expired - Fee Related CN2797611Y (en) | 2005-04-29 | 2005-04-29 | Straight-through type fracture wellhead casing protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797611Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158273B (en) * | 2007-11-07 | 2010-11-24 | 无锡浩安科技发展有限公司 | Slip-type casing tube break prevention compensation pipe |
| CN105840130A (en) * | 2015-01-15 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Main valve protector of shale gas production wellhead |
| CN106703750A (en) * | 2015-11-12 | 2017-05-24 | 中海石油深海开发有限公司 | Deep water sleeve high pressure spring type decompression valve |
-
2005
- 2005-04-29 CN CN 200520015872 patent/CN2797611Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101158273B (en) * | 2007-11-07 | 2010-11-24 | 无锡浩安科技发展有限公司 | Slip-type casing tube break prevention compensation pipe |
| CN105840130A (en) * | 2015-01-15 | 2016-08-10 | 中石化重庆涪陵页岩气勘探开发有限公司 | Main valve protector of shale gas production wellhead |
| CN106703750A (en) * | 2015-11-12 | 2017-05-24 | 中海石油深海开发有限公司 | Deep water sleeve high pressure spring type decompression valve |
| CN106703750B (en) * | 2015-11-12 | 2019-04-12 | 中海石油深海开发有限公司 | Deep water casing high pressure Spring-Loaded Pressure Relief Valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 Termination date: 20120429 |