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Integrated high-efficiency window sidetracking tool

A sidetracking and high-efficiency technology of window opening, applied in the direction of earthwork drilling, wellbore/well components, etc., can solve the problems of increased construction period, low overall efficiency, and increased drilling cost, so as to reduce the number of trips, High operation success rate, safe and reliable effect

Active Publication Date: 2019-10-01
海林新科石油耐磨工具有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the existing window sidetracking tools cannot ensure that the high-pressure pipe is cut near the crown of the milling cone, the remaining length of the high-pressure pipe connected to the crown of the milling cone will be relatively large
When the milling cone moves down along the surface of the inclined iron, during the normal milling process, the high-pressure pipe will wrap around the milling cone as the milling cone rotates, which will not only make the high-pressure pipe connected to the milling cone difficult to be milled off, but also affect the milling Cone mills the tube wall on one side of the casing
Its use performance is unreliable, the success rate of operation is not high, and it is prone to damage and fracture of inclined iron
The opening speed of the window is not fast enough, the window will be uneven and smooth, and the shape will be irregular, and the window will easily form dead steps
As a result, the success rate of window opening is not high, and the safety reliability is not high enough, which will increase the number of trips, greatly increase the construction period, increase the drilling cost, and the overall efficiency is low

Method used

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  • Integrated high-efficiency window sidetracking tool

Examples

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Embodiment Construction

[0008] Such as figure 1 As shown, it includes milling cone 1, high-pressure pipe 2, protection cylinder 3, inclined iron 4, inlet pipe 5, piston cylinder 6, several upper tooth blocks 7, upper piston 8, distribution pipe 9, lower piston 10, several pieces Lower tooth block 11, steel ball 12, ball seat 13 and primer 14, the lower end of milling cone 1 is axially connected with the upper end of protective tube 3, the upper end of inclined iron 4 is axially connected with protective tube 3, and the lower end of inclined iron 4 is connected with The upper end of the piston cylinder 6 is axially connected, the lower end of the piston cylinder 6 is axially connected with the upper end of the primer 14, the inlet pipe 5 is located in the piston cylinder 6, and the upper end is axially connected with the lower end of the oblique iron 4, and the high pressure pipe 2 is installed on the oblique iron 4 The upper and lower ends are connected with the upper end of the central hole of the i...

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Abstract

The invention relates to an integrated efficient windowing sidetrack drilling tool comprising a milling taper (1), a high-pressure pipe (2) and a protecting cylinder (3). A fixed plate (15) is arranged in the position, attached to the taper head of the milling taper (1), of the protecting cylinder (3); a high-pressure pipe nipple (16) is arranged between the upper end of the high-pressure pipe andthe milling taper, and the middle of the high-pressure pipe nipple (16) is welded to the fixed plate (15); a plurality of first backpitch grooves are formed in the outer wall of a crown part (17) atthe lower end of the milling taper, and a plurality of first cutting edges (18) are welded between the first backpitch grooves; and a plurality of second backpitch grooves (19) are formed in the positions, above the milling taper crown part (17), of the tapered face and the cylindrical face of the milling taper correspondingly, and a plurality of second cutting edges (20) are welded between the second backpitch grooves. The integrated efficient windowing sidetrack drilling tool is reliable in using performance, the operation success rate is high, and the phenomenon that tapered iron is damagedand fractured is avoided; the windowing speed is high, and the window shape is regular, so that a dead step is not formed, the windowing success rate is high, and the overall efficiency is high; andthe construction period can be shortened, and the drilling cost can be reduced.

Description

technical field [0001] The invention relates to petroleum tools, in particular to a sidetracking tool for opening windows. Background technique [0002] The window sidetracking tool is a tool for lateral re-drilling and deviated wells for oil wells or water wells with serious damage to the lower casing in oilfield workover engineering, to achieve the purpose of using the upper casing, or to use the original wellbore for orientation in order to save drilling costs Sidetracking to restore production capacity of abandoned wells. Since the existing sidetracking tool for window opening cannot ensure that the high-pressure pipe is cut off near the crown of the milling cone, the remaining length of the high-pressure pipe connected to the crown of the milling cone will be relatively large. When the milling cone moves down along the surface of the inclined iron, during the normal milling process, the high-pressure pipe will wrap around the milling cone as the milling cone rotates, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B29/06
Inventor 夏玮刘志权
Owner 海林新科石油耐磨工具有限责任公司
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