CN202194609U - Well mouth compensation device of oil well - Google Patents
Well mouth compensation device of oil well Download PDFInfo
- Publication number
- CN202194609U CN202194609U CN2011202175464U CN201120217546U CN202194609U CN 202194609 U CN202194609 U CN 202194609U CN 2011202175464 U CN2011202175464 U CN 2011202175464U CN 201120217546 U CN201120217546 U CN 201120217546U CN 202194609 U CN202194609 U CN 202194609U
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- Prior art keywords
- well mouth
- well
- oil
- compensation device
- oil well
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Abstract
A well mouth compensation device of an oil well comprises an upper connector, a center pipe, a sealing ring, an upper check cap, an outer pipe, a lower check block, an anti-loose nail and a lower connector. The upper connector is connected with the center pipe, the upper check cap is installed on the center pipe, and the upper check cap is sequentially connected with the outer pipe and the lower connector. The center pipe is connected with the outer pipe in disconnected mode so that the well mouth compensation device ensures that a well mouth process has a certain degree of free extension and is provided with a reserved space for going up for compensating for the distance of an oil-string casing for going up. The well mouth compensation device of the oil well has the advantages that the maximum compensation distance reaches 800mm, a pipeline in the process is led to be no longer stretched, breakage of the pipeline is avoided, relative constancy of the position of the oil extraction well mouth is ensured, the repair-free period of the well mouth process is prolonged, an inner surface and an outer surface adopt anti-corrosion and anti-scale treatment, pressure resistance can reach 20MPa, sealing effect is good, structure is reasonable, and installation and operation are convenient and the like. The well mouth compensation device of the oil well is widely used in measures for a peristaltic restraint process of the oil extraction well mouth.
Description
Technical field
The utility model relates to oil well mouth wriggling and suppresses facility, particularly a kind of well mouth of oil well compensation arrangement.
Background technology
In oil extraction process; Because the uneven or long-term a large amount of extraction underground water of long-time injection-production ratio; Cause the stratum in debt, cause ground settlement easily, cause that oil well casing is scurried on deforming, well head flow process fracture etc.; Not only restrict the oil well ordinary production, and serious threat is to post worker and peripheral personnel's personal safety.A kind of rectification method of routine; Mainly be the rectification flow process, well head snapped the place repeat welding, around oil jacket, adopt angle steel to reinforce; Though this method and measure can be played a role; But exist following shortcoming or deficiency simultaneously:,, make weld strength not reach requirement because cut can't thoroughly be polished at the scene though 1. the production of a period of time can be kept in the welding back; 2. owing to welding head pipe post and fluid column weight on sleeve pipe; Make the active force on the production string to discharge; Production string can't stretch fully, also can't avoid production string further on scurry, the casing buckling distortion takes place in follow-up production easily once more; 3. the steel plate that goes in ring snaps easily, causes problems such as oil well casing is scurried on deforming, the fracture of well head flow process to can not get thorough solution.
Summary of the invention
The purpose of the utility model provides a kind of well mouth of oil well compensation arrangement; Retaining cap, outer tube, following block, locking nail, lower contact constitute the structure of slipper seal in the employing through sealing ring and central tube; Reserve and scurry the space, can remedy and scurry distance on the production string, can offsetting well mouth horizontal direction force when compensation well head vertical direction is flexible inhomogeneous; The shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art guarantee the constant relatively of production wellhead position.
The described well mouth of oil well compensation arrangement of the utility model, comprise top connection, central tube, sealing ring, on keep off cap, outer tube, block, locking nail, lower contact down.Said top connection is connected with central tube, and the retaining cap is installed on the central tube, and retaining cap is connected with lower contact with outer tube in order on this.
Wherein, in the annular space of said lower contact upper end, outer tube and central tube lower end block and locking nail are installed down.Said top of going up the retaining cap is equipped with sealing ring, and sealing circle and central tube and last retaining cap constitute slipper seal.Said block is fixed by the bottom of locking nail and central tube.Said outer tube is connected with lower contact.
The utility model has the following advantages compared with prior art:
1, adopts central tube to break off and be connected, guarantee that the well head flow process has certain free dilatability, guarantee that the production wellhead position is constant relatively with outer tube;
2, scurry on reserving the space can remedy production string on scurry distance, maximum complementary range reaches 800mm;
3, the flow process pipeline is no longer stretched, avoid the line break phenomenon, prolong the well head flow process and be excused from a college course the phase;
4, surfaces externally and internally adopts anti-corrosion anti-scale to handle, the withstand voltage 20MPa that reaches, and sealing effectiveness is good;
5, practicality rational in infrastructure, convenient installation and operation.
Description of drawings
Accompanying drawing is a kind of example structure sketch map of the utility model.
The specific embodiment
Consult accompanying drawing; A kind of well mouth of oil well compensation arrangement; Comprise top connection 1, central tube 2, sealing ring 3, on keep off cap 4, outer tube 5, block 6, locking nail 7, lower contact 8 down; It is characterized in that said top connection 1 is connected with central tube 2, retaining cap 4 be installed on the central tube 2, this on retaining cap 4 in order with outer tube 5 and under connect
8 are connected.
In the annular space of lower contact 8 upper ends, outer tube 5 and central tube 2 lower ends block 6 and locking nail 7 are installed down.The top of last retaining cap 4 is equipped with sealing ring 3, sealing circle 3 and central tube 2, on keep off cap 4 and constitute slipper seals.Following block 6 is fixed by the bottom of locking nail 7 with central tube 2.Outer tube 5 is connected with lower contact 8.
During work, the utility model is installed between well head and the flow process, and two ends are designed with swivel joint, can offsetting well mouth horizontal direction force when compensation well head vertical direction is flexible inhomogeneous.When scurrying on the sleeve pipe, drive central tube 2 and move upward, following block 6, locking nail 7 and go up retaining cap 4 and cooperate; Can guarantee that central tube 2 can not skid off outer tube 5, be connected, guarantee that the well head flow process has certain free dilatability because central tube 2 breaks off with outer tube 5; The well mouth of oil well compensation arrangement of the utility model reserve 800mm on scurry the space; Can remedy and scurry distance on the production string, avoid the generation of line break phenomenon, guarantee the constant relatively of production wellhead position.
Claims (5)
1. well mouth of oil well compensation arrangement; Comprise top connection, central tube, sealing ring, on keep off cap, outer tube, block, locking nail, lower contact down; It is characterized in that said top connection is connected with central tube, the retaining cap is installed on the central tube, retaining cap is connected with lower contact with outer tube in order on this.
2. well mouth of oil well compensation arrangement according to claim 1 is characterized in that in the annular space of said lower contact upper end, outer tube and central tube lower end block and locking nail being installed down.
3. well mouth of oil well compensation arrangement according to claim 1 is characterized in that said top of going up the retaining cap is equipped with sealing ring, and sealing circle and central tube and last retaining cap constitute slipper seal.
4. well mouth of oil well compensation arrangement according to claim 1 and 2 is characterized in that said block is fixed by the bottom of locking nail and central tube.
5. well mouth of oil well compensation arrangement according to claim 1 is characterized in that said outer tube is connected with lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202175464U CN202194609U (en) | 2011-06-24 | 2011-06-24 | Well mouth compensation device of oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202175464U CN202194609U (en) | 2011-06-24 | 2011-06-24 | Well mouth compensation device of oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202194609U true CN202194609U (en) | 2012-04-18 |
Family
ID=45949526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202175464U Expired - Fee Related CN202194609U (en) | 2011-06-24 | 2011-06-24 | Well mouth compensation device of oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202194609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
-
2011
- 2011-06-24 CN CN2011202175464U patent/CN202194609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305763A (en) * | 2020-03-17 | 2020-06-19 | 河北宏龙环保科技有限公司 | Oil layer casing pipe upward-channeling prevention device |
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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 |
Granted publication date: 20120418 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |