CN203655205U - Local reverse circulation fishing tool - Google Patents
Local reverse circulation fishing tool Download PDFInfo
- Publication number
- CN203655205U CN203655205U CN201320747715.4U CN201320747715U CN203655205U CN 203655205 U CN203655205 U CN 203655205U CN 201320747715 U CN201320747715 U CN 201320747715U CN 203655205 U CN203655205 U CN 203655205U
- Authority
- CN
- China
- Prior art keywords
- inner core
- urceolus
- circulation
- local reverse
- outer 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
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Abstract
The utility model relates to a well repairing tool for an oil field absorption well, in particular to a local reverse circulation fishing tool. An outer tube is connected to the outer wall of an upper connector of the fishing tool, the lower end of the upper connector is connected to an inner tube, the lower end of the outer tube is connected to the outer wall of the inner tube, and the inner wall of the lower end of the upper connector is connected to a baffle board. Water holes are formed in the side wall of the upper connector located at the upper end of the baffle board and used for communicating the outer tube and the inner tube in an annular mode. A water outlet inner sleeve is connected to the side walls of the outer tube and the inner tube and makes the inside of the inner tube be communicated with the outside of the outer tube. A sediment assembly is installed at the lower end inside the inner tube and can be opened through pressure from bottom to top. Water holes are formed in the side wall of the lower end of the outer tube. The local reverse circulation fishing tool has the advantages of changing the circulation direction and fishing small falling objects and jamming prevention in the milling process, the success rate of fishing and milling is improved, cost is reduced, and construction efficiency is improved. The defects that according to an existing absorption well, the small falling objects are difficult to fish, and milling jamming happens are overcome.
Description
Technical field:
The utility model relates to a kind of oil field absorption well workover tool, particularly a kind of local reverse-circulation fisher.
Background technology:
Along with the oil-gas field development time increases, the impact of part casing damage in oil-water well and down-hole geological condition, oil gas water well hole condition variation increasingly, part leakage is lost serious, cause small falling object on junk top of fish to be collected salvaging and the anti-sticking of milling has brought very large difficulty, the method that solves at present it is to utilize chemical agent stifled (missing serious well stifled unsuccessful temporarily) or lower anti-circulation temporarily to salvage indigo plant repeatedly to salvage, high with regard to cost like this, long construction period and successful efficiency are low, and last well workover failure and this well may be scrapped.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of local reverse-circulation fisher, and this device has been realized has advantages of the loop direction of change, salvaging small falling object and milling anti-sticking, improves and salvages and milling success rate, reduces costs, and improves efficiency of construction.Overcome existing absorption well small falling object and salvaged the deficiency of difficulty and milling bit freezing.
Technical solution adopted in the utility model is: a kind of local reverse-circulation fisher, comprises top connection, urceolus and inner core; On top connection outer wall, connect urceolus, top connection lower end connects inner core, urceolus lower end is connected on inner tank theca, on the inwall of top connection lower end, connect watertight shutter, on the top connection sidewall of watertight shutter upper end, have the hydrophthalmia that annular space is connected between urceolus and inner core, water outlet inner sleeve is connected on the sidewall of urceolus and inner core and makes that inner core is inner to be connected with urceolus outside, and inner core interior lower end is provided with the precipitation assembly that can open by pressure from bottom to top, on the sidewall of urceolus lower end, has hydrophthalmia.
Precipitation assembly is loose-leaf assembly.
Precipitation assembly is sediment tube assembly.
Inner core lower end is designed with junk mill.
Inner core lower end is designed with lower contact.
The beneficial effects of the utility model are: the utlity model has the advantage that changes loop direction, salvages small falling object and milling anti-sticking, improve and salvage and milling success rate, reduce costs, improve efficiency of construction.
Brief description of the drawings:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is the structural representation that is designed with the local reverse-circulation fisher of loose-leaf assembly and junk mill.
Fig. 2 is the structural representation that is designed with the local reverse-circulation fisher of sediment tube assembly and junk mill.
Fig. 3 is the structural representation that is designed with the local reverse-circulation fisher of loose-leaf assembly and lower contact.
Fig. 4 is the structural representation that is designed with the local reverse-circulation fisher of sediment tube assembly and lower contact.
Detailed description of the invention:
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of local reverse-circulation fisher, comprises top connection 1, urceolus 4 and inner core 5; On top connection 1 outer wall, connect urceolus 4, top connection 1 lower end connects inner core 5, urceolus 4 lower ends are connected on inner core 5 outer walls, on top connection 1 lower end inwall, connect watertight shutter 2, on top connection 1 sidewall of watertight shutter 2 upper ends, have the hydrophthalmia that annular space is connected between urceolus 4 and inner core 5, water outlet inner sleeve 3 is connected on the sidewall of urceolus 4 and inner core 5 and makes that inner core 5 is inner to be connected with urceolus 4 outsides, inner core 5 interior lower end are provided with the precipitation assembly that can open by pressure from bottom to top, on urceolus 4 lower end sidewalls, have hydrophthalmia.Precipitation assembly is loose-leaf assembly 6 or sediment tube assembly 7.Inner core 5 lower ends are designed with junk mill 8 or lower contact 9.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; Use needs as long as meet, all within protection domain of the present utility model.
Claims (5)
1. a local reverse-circulation fisher, comprises top connection (1), urceolus (4) and inner core (5), it is characterized in that: on top connection (1) outer wall, connect urceolus (4), top connection (1) lower end connects inner core (5), urceolus (4) lower end is connected on inner core (5) outer wall, on the inwall of top connection (1) lower end, connect watertight shutter (2), on top connection (1) sidewall of watertight shutter (2) upper end, have the hydrophthalmia that annular space is connected between urceolus (4) and inner core (5), water outlet inner sleeve (3) is connected on the sidewall of urceolus (4) and inner core (5) and makes that inner core (5) is inner to be connected with urceolus (4) outside, inner core (5) interior lower end is provided with the precipitation assembly that can open by pressure from bottom to top, on the sidewall of urceolus (4) lower end, have hydrophthalmia.
2. according to local reverse-circulation fisher claimed in claim 1, it is characterized in that: described precipitation assembly is loose-leaf assembly (6).
3. according to local reverse-circulation fisher claimed in claim 1, it is characterized in that: described precipitation assembly is sediment tube assembly (7).
4. according to local reverse-circulation fisher claimed in claim 1, it is characterized in that: described inner core (5) lower end is designed with junk mill (8).
5. according to local reverse-circulation fisher claimed in claim 1, it is characterized in that: described inner core (5) lower end is designed with lower contact (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747715.4U CN203655205U (en) | 2013-11-21 | 2013-11-21 | Local reverse circulation fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320747715.4U CN203655205U (en) | 2013-11-21 | 2013-11-21 | Local reverse circulation fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655205U true CN203655205U (en) | 2014-06-18 |
Family
ID=50921605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320747715.4U Expired - Fee Related CN203655205U (en) | 2013-11-21 | 2013-11-21 | Local reverse circulation fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703734A (en) * | 2017-01-24 | 2017-05-24 | 中国石油天然气集团公司 | Coiled tubing slaving device |
-
2013
- 2013-11-21 CN CN201320747715.4U patent/CN203655205U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703734A (en) * | 2017-01-24 | 2017-05-24 | 中国石油天然气集团公司 | Coiled tubing slaving 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: 20140618 Termination date: 20181121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |