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Mechanical part of continuous oil tube guiding tool

A tool machinery and steering technology, applied in the direction of drill pipe, casing, directional drilling, etc., can solve the problems of long construction period, reduced service life of coiled tubing, rough hole trajectory, etc., and achieves simple operation, novel structure, and easy operation Safe and reliable effect

Inactive Publication Date: 2012-04-04
CNPC GREATWALL DRILLING ENG
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  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the deficiencies of long construction period, reduced service life of coiled tubing and rough borehole trajectory in existing coiled tubing drilling

Method used

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  • Mechanical part of continuous oil tube guiding tool
  • Mechanical part of continuous oil tube guiding tool
  • Mechanical part of continuous oil tube guiding tool

Examples

Experimental program
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Embodiment Construction

[0013] Such as figure 1 , figure 2 As shown, the mechanical part of a coiled tubing guiding tool includes an eccentric body 1; the upper half of the eccentric body 1 is designed as an eccentric tubular structure, and a rectangular stepped groove is processed outside the thickest pipe wall of the upper half of the eccentric body 1. The groove Deep in the middle and shallow at both ends, the middle of the deep groove is a boss structure, three deep holes are drilled side by side at the boss, and a piston 6 is built in the deep hole. Out of the boss in the middle of the deep groove, return spring 4 is installed in grooves at both ends of the righting block 5, and the righting block pressing plate 2 is a hollow rectangular block, which is pressed on the top of the righting block 5, and the high part in the middle of the righting block 5 is separated from the righting block. The hollow part of the pressure plate 2 protrudes, and the two ends of the pressure plate 2 of the central...

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Abstract

The invention relates to the technical field of drilling by continuous oil tubes, in particular to a mechanical part of a continuous oil tube guiding tool. A rectangular stepped slot is processed outside the thickest pipe wall at the upper half part of an eccentric body of the mechanical part; the slot is deep in the middle and shallow on both ends; a boss structure is arranged in the middle of the deep slot; three deep holes are drilled in parallel on a boss; pistons are arranged in the deep holes; a straightening block is arranged outside the boss in the middle of the deep slot; grooves are arranged on both ends of the straightening block to arrange composite springs; a straightening block pressure plate is a hollow rectangular block which is pressed above the straightening block; a high part in the middle of the straightening block extends from a hollow part of the straightening block pressure plate; both ends of the straightening block pressure plate are fixed on the eccentric body through pressure plate fixing screws; a hydraulic oil runner is arranged on the upper end surface of the inner wall of the upper half part of the eccentric body; and the hydraulic oil runner is communicated with the three deep holes on the boss. The mechanical part of the continuous oil tube guiding tool is matched with a circuit part and a hydraulic part of the continuous oil pipe guiding tool and adjusts the deflecting capability of a motor, so that the curvature of a borehole meets the design requirements.

Description

Technical field: [0001] The invention relates to the technical field of coiled tubing drilling, in particular to a mechanical part of a coiled tubing guiding tool. Background technique: [0002] During coiled tubing drilling, since the drill string is connected to the coiled tubing, compound drilling cannot be used to adjust the build-up rate. At present, in coiled tubing drilling orientation, there are mainly three ways to meet the construction requirements: one is to use downhole motors with different bending angles to meet different build-up rate requirements, and the method of pulling out to replace the downhole motor or pulling out to adjust the downhole motor is mainly used on site. The size of the bend angle, this method increases the construction period and reduces the service life of the coiled tubing; the second is to adjust the tool face angle of the downhole motor through the directional tool, that is, swing the orientation to reduce the build-up rate. This metho...

Claims

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Application Information

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IPC IPC(8): E21B7/06E21B17/10
Inventor 夏炎余雷李艳丽尹方雷郑颖异霍新
Owner CNPC GREATWALL DRILLING ENG
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