CN2743530Y - Under well hydraulic fishing tool - Google Patents
Under well hydraulic fishing tool Download PDFInfo
- Publication number
- CN2743530Y CN2743530Y CN 200420070497 CN200420070497U CN2743530Y CN 2743530 Y CN2743530 Y CN 2743530Y CN 200420070497 CN200420070497 CN 200420070497 CN 200420070497 U CN200420070497 U CN 200420070497U CN 2743530 Y CN2743530 Y CN 2743530Y
- Authority
- CN
- China
- Prior art keywords
- fishing
- hydraulic
- under well
- fishing tool
- well
- 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 an under well hydraulic fishing tool for repairing well and fishing operation in an oil field which is composed of hydraulic anchors 1, 3, 5, short tubes 2, 4, a hydraulic cylinder 6, an inner tube 7, and a fishing head 8. The under well hydraulic fishing tool is compact in structure and simple to operate; in the process of fishing falling objects under well, the under well hydraulic fishing tool acts the lifting fishing force on the casing tube of the oil well, so the fishing effect of an overhaul operating machine can be obtained consequently and the construction cost and construction time can be saved; besides, a falling rack accident caused by lifting pulling force directly acting a the workover rack can be avoided.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for oil field well workover fishing.
Background technology:
In the oil well production process, owing to trouble of lost tool in hole jam tubing string, slim-hole operation, major diameter instruments such as casing deformation, sand, wax reason such as go into the well often causes lock of tool drilling, upper lifting pipe post unfreezing energetically when the oil well operation for this reason.The on-the-spot light maintenance implement that uses at present is based on the tractor hoist of configuration 390kN level Hoisting System, its workover derrick limit load is 750kN, and the power that lifts in the unfreezing often surpasses tractor hoist maximum working load allowable, so just must move the heavy repair task truck-mounted drilling rig and finish the unfreezing construction, increase considerably construction cost, and make the well workover time lengthening, influence the oil well ordinary production.
Summary of the invention:
The purpose of this utility model is to provide and can produces big upper lifting force under a kind of situation that can not use the overhaul rig when salvaging trouble of lost tool in hole and realize salvaging purpose, thereby saves operating expenses, the underground hydraulic pressure fishing tool of time.
The utility model is to realize like this.This kind down-hole fishing tool is made of in two sub-sections the portion of carrying in anchor portion and the salvaging, and wherein, anchor portion is formed by connecting with short tube by 3 waterpower anchors, puies forward part in the salvaging and is made up of 6 groups of hydraulic cylinders, interior pipe and fishing head.Anchor portion utilizes short tube that 3 waterpower anchors are separated, and can guarantee effectively that the slips sheet on the waterpower anchor blocks sleeve pipe.In addition, the slips sheet on the waterpower anchor is radially outwards motion under pressure, blocks sleeve pipe, when pressure stops, being subjected to spring action, and the slips sheet radially moves inward, and returns to initial position.Put forward part in the salvaging and be made up of 6 groups of hydraulic cylinders, by suppressing, make hydraulic cylinder upwards produce pulling force, the salvaging that drives whole interior pipe and its below is up, and then the fish that will link to each other with fishing head salvages out.In the salvaging process, along with pressure raises, anchor portion is the seat envelope at first, simultaneously, puies forward part in the salvaging and starts working, and the interior pipe stressed drawing fish that makes progress when pulling force acquires a certain degree, is extracted fish and is subjected to card position.
The utility model compact conformation, easy and simple to handle, in salvaging the trouble of lost tool in hole process, this instrument will on carry and salvage masterpiece and be used on the oil well casing, thereby play the salvaging effect of heavy repair task machine, save operating expenses and time, and can avoid the power of lifting to act directly on the workover frame and the accident of falling the frame that causes.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment:
The utility model is provided by following examples, is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is by waterpower anchor 1,3,5, and short tube 2,4, hydraulic cylinder 6, interior pipe 7 and fishing head 8 are formed, and its structure, assembled relation are as follows: waterpower anchor 1,3,5 connects with screw thread at interval by short tube 2,4, constitutes anchor portion; Interior pipe 7 upper and lower ends are connected with fishing head 8 with 6 groups of hydraulic cylinders 6 with screw thread respectively, constitute to salvage to put forward part; Hydraulic cylinder 6, interior pipe 7 upper ends are connected by box cupling with waterpower anchor 5 lower ends, constitute this down-hole fishing tool integral body.Wherein, the screw thread on the fishing head 8 is the drilling rod button, to guarantee the dropout accident can not to take place under the situation of big pulling force.
Claims (1)
1, a kind of underground hydraulic pressure fishing tool, by waterpower anchor (1), (3), (5), short tube (2), (4), hydraulic cylinder (6), interior pipe (7) and fishing head (8) are formed, it is characterized in that: waterpower anchor (1), (3), (5) connect with screw thread at interval by short tube (2), (4), constitute anchor portion, interior pipe (7) upper and lower pass is connected with fishing head (8) with 6 groups of hydraulic cylinders (6) with screw thread respectively, constitutes to salvage to put forward part; Hydraulic cylinder (6), interior pipe (7) upper end are connected by box cupling with waterpower anchor (5) lower end, constitute this down-hole fishing tool integral body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070497 CN2743530Y (en) | 2004-08-28 | 2004-08-28 | Under well hydraulic fishing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070497 CN2743530Y (en) | 2004-08-28 | 2004-08-28 | Under well hydraulic fishing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2743530Y true CN2743530Y (en) | 2005-11-30 |
Family
ID=35633549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070497 Expired - Fee Related CN2743530Y (en) | 2004-08-28 | 2004-08-28 | Under well hydraulic fishing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2743530Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101884A (en) * | 2018-10-25 | 2020-05-05 | 中国石油天然气股份有限公司 | Device and method for extracting cannula |
-
2004
- 2004-08-28 CN CN 200420070497 patent/CN2743530Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101884A (en) * | 2018-10-25 | 2020-05-05 | 中国石油天然气股份有限公司 | Device and method for extracting cannula |
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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: 20051130 Termination date: 20100828 |