CN2667145Y - Efficient grinding and milling underwell tool - Google Patents
Efficient grinding and milling underwell tool Download PDFInfo
- Publication number
- CN2667145Y CN2667145Y CN 200320105439 CN200320105439U CN2667145Y CN 2667145 Y CN2667145 Y CN 2667145Y CN 200320105439 CN200320105439 CN 200320105439 CN 200320105439 U CN200320105439 U CN 200320105439U CN 2667145 Y CN2667145 Y CN 2667145Y
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- milling
- tool
- utility
- retracting cylinder
- model
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Abstract
The utility model relates to an efficient grinding and milling underwell tool for well workover operation, which consists of a hydraulic anchor 1, a collar 2, a telescopic cylinder 3, a cylinder cover 4, a telescopic bar 5, washers 6 and 10, a fixing hammer 7, a piston 8, a sealing ring 9, a nut 11, a variable clamping joint 12, a screw drill tool 13 and grinding shoes 14. The utility model has the advantages of simple structure, simplified operation procedures, greatly improve efficiency, none transportation of the drill pipe of the crane or flat bed truck, saved manpower, material resources and cost, and facilitated improvement of the production time efficiency of the well, and promotion and application.
Description
Technical field:
The utility model relates to a kind of downhole tool that is used for the workover operation.
Background technology:
Along with the prolongation of oil field development time, oil well down-hole technology status worse and worse, the heavy repair task well is cumulative many next day.At present, on-the-spot when carrying out the workover operation, usually need to adopt 1 crane and 2 flat car ropings to lift kelly bar, rotating disk, drilling rod, also need to increase by 1 working rig, need simultaneously to employ cementing truck, tank car, and preparation of construction and milling operation need expend a large amount of manpowers, material and time, efficient is lower, cost is very high, is unfavorable for the raising with exploitation effect, economic benefit of making full use of of oil well.
Summary of the invention:
The purpose of this utility model is to provide a kind of and employs that equipment is few, operation procedure is simplified, can improve operating efficiency greatly, save human and material resources, the efficient milling downhole tool of time.
The utility model is to realize like this.This kind downhole tool, be made up of anti-rotation hydraulic anchor, box cupling, voltage stabilizing retracting cylinder, cover, expansion link, packing ring, key, piston, sealing ring, nut, change snapping head, helicoid hydraulic motor and efficient milling shoes, the box cupling upper and lower is connected with hydraulic anchor and expansion link respectively; Expansion link places in the retracting cylinder, is provided with cover therebetween, and the bottom is disposed with packing ring, piston, sealing ring and packing ring, and the inboard is provided with retainingf key, and the lower end is fixed with nut screwing clamping; The retracting cylinder lower end becomes the snapping head with the screw thread tipping, becomes snapping head lower end and is connected with helicoid hydraulic motor, connects junk mill under the helicoid hydraulic motor.During construction operation, with above-mentioned downhole tool G.I.H successively.Slowly transfer tubing string when footwear during from the top of fish 20m left and right sides, run into the top of fish suspending weight and slowly descend, transfer again one (voltage stabilizing retracting cylinder) flexible apart from (1.5～1.8m); Circulate behind the fixed displacement, the helicoid hydraulic motor pressure drop makes and forms pressure in hydraulic anchor and the retracting cylinder, and hydraulic anchor is anchored on the casing wall.During milling operation, following instrument weight of retracting cylinder and hydraulic pressuring difference effect force retracting cylinder, the downward pressurized operation of piston, and helicoid hydraulic motor drives junk mill and rotates.Along with the milling drilling depth, retracting cylinder, piston and drill bit move down, when milling drilling depth to flexible apart from (1.5～1.8m) time, piston arrives retracting cylinder top, retracting cylinder top plug hole exposes, the pump pressure 3～4Mpa that descends.Circulate with cementing truck and a week chip thoroughly to be returned out, a flexible distance is transferred in termination of pumping again, finishes a milling process and opens and put circulation, continues milling and creeps into until finishing construction task.
The utility model is simple in structure, utilize it can simplify operation procedure, raise the efficiency greatly, no longer employ crane, flat car roping drilling rod, save human and material resources and cost, the inferior milling operation time of every well only needs 2 hours, significantly reduces the operation holding time, improve the oil well production timeliness, be suitable for and apply.
Description of drawings:
Accompanying drawing is the utility model general structure schematic diagram.
The specific embodiment:
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure:
The utility model is made up of hydraulic anchor 1, box cupling 2, retracting cylinder 3, cover 4, expansion link 5, packing ring 6,10, retainingf key 7, piston 8, sealing ring 9, nut 11, change snapping head 12, helicoid hydraulic motor 13, junk mill 14, and its structure assembled relation is as follows: box cupling 2 upper and lowers are connected with hydraulic anchor 1 and expansion link 5 respectively; Expansion link 5 places in the retracting cylinder 3, is provided with cover 4 therebetween, and the bottom is disposed with packing ring 6, piston 8, sealing ring 9 and packing ring 10, and the inboard is provided with retainingf key 7, and the lower end is tightened fixing with nut 11; Retracting cylinder 3 lower ends become snapping head 12 with screw thread tipping one, and joint 12 lower ends are connected with helicoid hydraulic motor 13, and helicoid hydraulic motor connects junk mill 14 13 times.Wherein, hydraulic anchor 1 long 490mm, maximum rigid body diameter 140mm, the anchor fluke that the middle part is uniformly distributed along the circumference are the perpendicular tooth of anti-rotation.Retracting cylinder 3 is the cylinder that a lower end has internal thread, is uniformly distributed with 4～6 plug holees on it along the circumference.Cover 4 is that an inner surface is hexagonal cylinder.Expansion link 5 is an a upper and lower end screwed hexagon hollow lever respectively.Other is existing conventional component.
Claims (1)
1, a kind of efficient milling downhole tool is made up of hydraulic anchor (1), helicoid hydraulic motor (13), junk mill (14), it is characterized in that: box cupling (2) upper and lower is connected with hydraulic anchor (1) and expansion link (5) respectively; Expansion link (5) places in the retracting cylinder (3), is provided with cover (4) therebetween, and the bottom is disposed with packing ring (6), piston (8), sealing ring (9) and packing ring (10), and the inboard is provided with retainingf key (7), and the lower end is tightened fixing with nut (11); Retracting cylinder (3) lower end becomes snapping head (12) with screw thread tipping one, and joint (12) lower end is connected with helicoid hydraulic motor (13), connects junk mill (14) under the helicoid hydraulic motor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105439 CN2667145Y (en) | 2003-11-17 | 2003-11-17 | Efficient grinding and milling underwell tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320105439 CN2667145Y (en) | 2003-11-17 | 2003-11-17 | Efficient grinding and milling underwell tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667145Y true CN2667145Y (en) | 2004-12-29 |
Family
ID=34341244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320105439 Expired - Fee Related CN2667145Y (en) | 2003-11-17 | 2003-11-17 | Efficient grinding and milling underwell tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667145Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107620579A (en) * | 2017-08-31 | 2018-01-23 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
| CN109386246A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | It is a kind of to sweep plug, the drilling tool of milling and method for tie-back sleeve |
-
2003
- 2003-11-17 CN CN 200320105439 patent/CN2667145Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386246A (en) * | 2017-08-08 | 2019-02-26 | 中国石油化工股份有限公司 | It is a kind of to sweep plug, the drilling tool of milling and method for tie-back sleeve |
| CN109386246B (en) * | 2017-08-08 | 2021-01-05 | 中国石油化工股份有限公司 | Drilling tool and method for plug sweeping, grinding and milling of tieback cylinder |
| CN107620579A (en) * | 2017-08-31 | 2018-01-23 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
| CN107620579B (en) * | 2017-08-31 | 2020-06-09 | 中国石油天然气股份有限公司 | Downhole workover tool for horizontal well |
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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 |