CN202381027U - Glass tail plug - Google Patents
Glass tail plug Download PDFInfo
- Publication number
- CN202381027U CN202381027U CN2011204783322U CN201120478332U CN202381027U CN 202381027 U CN202381027 U CN 202381027U CN 2011204783322 U CN2011204783322 U CN 2011204783322U CN 201120478332 U CN201120478332 U CN 201120478332U CN 202381027 U CN202381027 U CN 202381027U
- Authority
- CN
- China
- Prior art keywords
- glass
- glass baffle
- well
- tubing string
- joint
- 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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Abstract
The utility model discloses a glass tail plug, which comprises an upper joint (1), a safety dowel (2), a glass baffle (3) and a lower joint (5), wherein the upper joint (1) and the lower joint (5) are in threaded connection, the safety dowel (2) limits the rotation of the upper joint (1) and the lower joint (5), the glass baffle (3) is placed between the upper joint (1) and the lower joint (5), and sealing rubber rings (4) are respectively arranged between the glass baffle (3) and the upper joint (1) as well as between the glass baffle (3) and the lower joint (5). The glass tail plug is applied to sand removal, cement injection and well completion construction in the pressurized operations of an oil-water well, can effectively plug a channel in a tubing string after entering the well, and prevents high pressure fluid from leaking out through the channel of the tubing string; an inverse well-flushing operation can be realized after the glass baffle is pressed open, so the risk of blocking the tubing string by the pressurized sand removal and cement injection operations is reduced; and the glass tail plug is utilized for well completion, and the drift diameter can satisfy the test requirements after the glass baffle is pressed open.
Description
Technical field
The utility model relates to the instrument in a kind of profit gas well Operating Pressure process, can realize shutoff tubing string internal channel, and realization is with operation anti-flushing well operations such as pressing sand washing, notes ash and satisfies tester stifled through the glass tail that requires.
Background technology
Profit gas well Operating Pressure well band presses sand washing, the grey operation of notes ball-and-seat commonly used to come shutoff tubing string internal channel at present; Because acting as of ball-and-seat only allows the liquid one-way flow; Thereby clean-out service just during operation, can not realize the anti-flushing well operation, and when annotating grey operation, be prone to ball-and-seat is blocked if any bulk foreign matter inlet pipe post; Cause and can't construct, even solid, card tubing string.
In addition; What use during completion tubular column under the profit gas well Operating Pressure at present is the hydraulic pressure sliding sleeve; This tool construction is top connection, stifled, the collection cups of metal tail from top to bottom, and this instrument is connected the completion tubular column bottom, after tubing string is accomplished; Suppress mode through oil pipe and be depressed in the collection cups the metal tail is stifled, cause the logger can not be down to the requirement of the construction of logging well below the tubing string.
The utility model content
The technical problem that the utility model will solve provide internal channel when a kind of glass tail is stifled can realize lower tubular column shutoff, through hydraulic pressure press off the glass baffle plate, realize anti-flushing well, logger smoothly through satisfying sand washing, annotating ash, completion practice requirement.
For solving the problems of the technologies described above; The utility model glass tail is stifled; Be made up of top connection 1, safety pin 2, glass baffle plate 3 and lower contact 5, wherein, this top connection 1 is threaded with lower contact 5; Above-mentioned safety pin 2 limits the rotation of this top connection 1 and this lower contact 5, and above-mentioned glass baffle plate 3 places between this top connection 1 and this lower contact 5.
An O-ring seal 4 respectively is set between above-mentioned glass baffle plate 3 and above-mentioned top connection 1, the above-mentioned lower contact 5, guarantees sealing effectiveness.
Adopt the present technique scheme, 1, the utility model glass tail can realize effective shutoff tubing string internal channel after blocking up well, prevents that highly pressurised liquid from leaking through the tubing string passage; 2, can realize the anti-flushing well operation after pressing off, reduce band and pressed sand washing and annotate the risk of grey operation; 3, utilize this instrument completion, press off the glass baffle plate after, latus rectum can satisfy test request; 4, this tool construction is simple, and is practical.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further explain.
Fig. 1 is the stifled structural representation of the utility model glass tail.
The specific embodiment
As shown in Figure 1; The utility model glass tail blocks up and comprises top connection 1, safety pin 2, glass baffle plate 3 and lower contact 5; Wherein: above-mentioned top connection 1 is threaded with above-mentioned lower contact 5, and above-mentioned safety pin 2 limits that screw thread relatively rotates between this top connection 1 and this lower contact 5.
Above-mentioned glass baffle plate 3 places between this top connection 1 and this lower contact 5, and an O-ring seal 4 respectively is set between glass baffle plate 3 and top connection 1, the lower contact 5, guarantees sealing effectiveness.
Be used for the shutoff tubing string:
This instrument assembling back is through two O-ring seals, 4 sealing top connection 1 end face and glass baffle plates 3; Glass baffle plate 3 is realized shutoff tubing string internal channel with lower contact 5 end faces, prevents that highly pressurised liquid from leaking through the tubing string passage; Utilize safety pin to prevent the screw thread derotation, guarantee sealing effectiveness.
Being used for band presses sand washing, annotates grey operation:
Tubular column structure is that nib, glass tail are stifled, working string from bottom to top, go into well after, whenever be lowered to the 200m tubing string; In tubing string, fill clear water, to reduce glass baffle plate 3 inside and outside differential pressures, down after desired depth; The oil pipe forehand is pressed onto glass baffle plate 3 rated pressure values; Press off glass baffle plate 3, open the tubing string passage after, be with and press sand washing and annotate operation such as ash.
Be used for completion practice:
This instrument is received the completion tubular column string bottom; Be lowered to and realize shutoff tubing string internal channel in the process; After arriving desired depth, oil pipe presses off glass baffle plate 3 after suppressing glass baffle plate 3 rated pressure values; After pressing off, glass baffle plate 3 can guarantee latus rectum greater than 50mm and present bell mouth shape, to satisfy profit gas well test request.
Claims (2)
1. a glass tail is stifled; Form by top connection (1), safety pin (2), glass baffle plate (3) and lower contact (5); It is characterized in that: said top connection (1) is threaded with said lower contact (5); Said safety pin (2) limits the rotation of said top connection (1) and said lower contact (5), and said glass baffle plate (3) places between said top connection (1) and the said lower contact (5).
2. glass tail according to claim 1 is stifled, it is characterized in that: between said glass baffle plate (3) and said top connection (1), the said lower contact (5) O-ring seal (4) is set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204783322U CN202381027U (en) | 2011-11-25 | 2011-11-25 | Glass tail plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204783322U CN202381027U (en) | 2011-11-25 | 2011-11-25 | Glass tail plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381027U true CN202381027U (en) | 2012-08-15 |
Family
ID=46629540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204783322U Expired - Fee Related CN202381027U (en) | 2011-11-25 | 2011-11-25 | Glass tail plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381027U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737913A (en) * | 2022-04-18 | 2022-07-12 | 中煤科工集团西安研究院有限公司 | Underground coal mine long drill hole internal local grouting reinforcement system and grouting method |
-
2011
- 2011-11-25 CN CN2011204783322U patent/CN202381027U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114737913A (en) * | 2022-04-18 | 2022-07-12 | 中煤科工集团西安研究院有限公司 | Underground coal mine long drill hole internal local grouting reinforcement system and grouting method |
| CN114737913B (en) * | 2022-04-18 | 2023-10-27 | 中煤科工集团西安研究院有限公司 | Local grouting reinforcement system and grouting method in long drilling hole of underground coal mine |
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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: 20120815 Termination date: 20201125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |