CN200982171Y - Multi-stage diversion filtering type salvaging cup for workover treatment - Google Patents
Multi-stage diversion filtering type salvaging cup for workover treatment Download PDFInfo
- Publication number
- CN200982171Y CN200982171Y CN 200620093341 CN200620093341U CN200982171Y CN 200982171 Y CN200982171 Y CN 200982171Y CN 200620093341 CN200620093341 CN 200620093341 CN 200620093341 U CN200620093341 U CN 200620093341U CN 200982171 Y CN200982171 Y CN 200982171Y
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- China
- Prior art keywords
- cup
- screen casing
- workover treatment
- central tube
- utility
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- 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 downhole tool which is used for the workover treatment in the oilfield, in particular to a multi-stage diversion filtration fishing cup. The utility model comprises an upper joint and a pipe core, wherein the pipe core is drilled with a plurality of holes in the outer wall and is arranged with a bellmouth eyelet in the lower end and a screen cloth outside the wall, then the pipe core is arranged in a cone screen pipe cup which is arranged with multi-stage diversion holes and the lower end of the screen pipe cup is connected with a lower joint. When in the process of working, the utility model can form fluid cycle in the broken casing, wash the drill chip and send the larger sand grain and drill ship into the fishing cup, and thereby can prevent the accident of sticking of the drill pit and can finish the maintenance work of the accidental well when it is impossible to form fluid cycle in the well.
Description
Technical field:
The utility model relates to the downhole tool that oil well repairing operation is used, the multilevel deflector filtering type fishing cup that especially a kind of workover treatment is used.
Background technology:
Oil field development is entering stage middle and later periods; most barreler output can reduce gradually; lengthening along with the production time; increasing of operation well workover number of times; the situation that sleeve pipe damages also can appear in indivedual oil wells; because the damage of sleeve pipe and the reduction of strata pressure; make many oil wells lost circulation situation in the well when well workover, occur; for must making oil well, smooth construction keeps circulation ability preferably; adopt toward the mud the inside and can obtain certain effect with the sealing agent method; but reinforcement along with environmental protection and stratum protection consciousness; this technology can not adapt to the requirement of production; must select to help clean technologies equipment in well workover reduces because of leakage causes destruction to environment and stratum, so that carry out workover treatment smoothly.
The utility model content:
The utility model purpose is in order to overcome above-mentioned shortcoming, and the multilevel deflector filtering type fishing cup that provides a kind of workover treatment to use, and can be implemented in oil well casing and damage and can not set up oil well liquid cycling condition and get off to finish maintenance to the accident well.
The technical solution of the utility model is: it comprises by top connection and forming by the central tube of screwed connection, be drilled with several eyelets on the described central tube outer wall, the lower end is a bell mouth shape, the eyelet skin is surrounded by a screen cloth, this central tube is placed in the cone-shaped screen casing formula cup that has the multilevel deflector hole, and screen casing formula cup lower end is connected with lower contact by screw thread.
Several multilevel deflector holes of distribution on the described screen casing cup tube wall, there is a scratch resistant mouth of clinking glasses the upper end, and between central tube and the screen casing formula cup annular housing is arranged.
The operating principle of utility model is:
During use, lower contact and workover tool join, top connection with connect drilling tool and join, the interior workover fluid of pit shaft dashes sand in the well and various chip during work, the relatively large chip of some of them can not return out in well head or the direct absorption well, carry junk chip that drilling tool returns out not circulating in bulk chip or the absorption well on treating after the termination of pumping and under the multistage guide functions that enters the circulation discharge orifice, be introduced in the screen casing cup, this moment workover fluid chip etc. is left in the cavity by screen cloth.Trip out screen casing formula cup during cavity earlier in cleaning and it is inverted from the multilevel deflector hole, stretches into stirring with iron wire and rinse well from outside to inside by screen cloth with clear water then and get final product, in order to use next time.
Description of drawings:
Accompanying drawing is the utility model structural representation.
Among the figure by 1, central tube, 2, the multilevel deflector hole, 3, screen casing formula cup, 4, top connection, 5, screen cloth, 6, lower contact, 7, cavity, 8, scratch resistant clinking glasses mouthful form.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further.
In the accompanying drawings, in the top connection 4, the lower end has screw thread, the lower end that is connected with oil pipe, its upper end is connected with central tube 1, central tube 1 is the lower end that a pipe is connected to top connection 4, on its tube wall, be drilled with several eyelets, be used for carrying out mud circulation, for preventing that oarse-grained sandstone and fragment from entering in the central tube, on the central tube outer wall, be wound with one deck stainless steel mesh 5, big chip rock is stopped that central tube 1 skin has a screen casing formula cup 3, this cup is to be made with the stainless steel metal material, scratching can be prevented for cone-shaped in its upper end, and the central tube lower end is horn-like, is evenly distributed with several multilevel deflector holes 2 on the screen casing formula cup tube wall, the interior liquid of the well that is used for circulating, there is annular housing 7 upper end for the scratch resistant mouth 8 of clinking glasses between central tube and screen casing formula cup, be used for storing chip.
The box of described screen casing formula cup 3 lower ends is connected with lower contact 6 pin threads, and lower contact is connecting drilling tool (figure does not draw) by pin thread.
Claims (2)
1, the multilevel deflector filtering type fishing cup used of a kind of workover treatment, form by the central tube (1) of screwed connection by top connection (4), it is characterized in that: be drilled with several eyelets on described central tube (1) outer wall, the lower end is a bell mouth shape, the eyelet skin is surrounded by a screen cloth (5), be placed in the cone-shaped screen casing formula cup (3) that has multilevel deflector hole (2), screen casing formula cup (3) lower end is connected with lower contact (6) by screw thread.
2, the multilevel deflector filtering type fishing cup used of a kind of workover treatment according to claim 1, it is characterized in that: several multilevel deflector holes (2) distribute on described screen casing formula cup (3) tube wall, there are scratch resistant clink glasses mouthful (8) upper end, between central tube (1) and the screen casing formula cup annular housing (7) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093341 CN200982171Y (en) | 2006-09-17 | 2006-09-17 | Multi-stage diversion filtering type salvaging cup for workover treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093341 CN200982171Y (en) | 2006-09-17 | 2006-09-17 | Multi-stage diversion filtering type salvaging cup for workover treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200982171Y true CN200982171Y (en) | 2007-11-28 |
Family
ID=38909331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620093341 Expired - Fee Related CN200982171Y (en) | 2006-09-17 | 2006-09-17 | Multi-stage diversion filtering type salvaging cup for workover treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200982171Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513083A (en) * | 2019-08-27 | 2019-11-29 | 中国石油大学(华东) | A kind of pulverized coal oil pipe |
| CN111101881A (en) * | 2018-10-26 | 2020-05-05 | 中国石油天然气股份有限公司 | Drilling and grinding tool |
-
2006
- 2006-09-17 CN CN 200620093341 patent/CN200982171Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101881A (en) * | 2018-10-26 | 2020-05-05 | 中国石油天然气股份有限公司 | Drilling and grinding tool |
| CN110513083A (en) * | 2019-08-27 | 2019-11-29 | 中国石油大学(华东) | A kind of pulverized coal oil pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |