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DEVELOPMENT AND DISCUSSION OF NEW BOREHOLE DEVIATION CONTROL TECHNOLOGY FOR AIR DRILLING

Yingfeng Meng, Cnooc Tianjing

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Abstract

The development process of borehole deviation control technology was reviewed,and the causes and harm of borehole deviation incontrollable were presented,and the air hammer drilling,air screw drilling,enlarging borehole and keeping full technology and auto-preventing deviation technology were discussed in this paper.At present,air hammer drilling technology is more availability and feasibility.The research emphases of air hammer drilling technology were introduced,including vibration mechanism of drilling tool,operating life,lubricating mechanism and optimizing structure of air hammer.This paper presented two centralizers for air drilling horizontal well and vertical well and gyro wheel centralizer,solving the problems that mud drilling centralizer is used in air drilling.

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What this paper is about

The development process of borehole deviation control technology was reviewed,and the causes and harm of borehole deviation incontrollable were presented,and the air hammer drilling,air screw drilling,enlarging borehole and keeping full technology and auto-preventing deviation technology were discussed in this paper.At present,air hammer drilling technology is more availability and feasibility.The research emphases of air hammer drilling technology were introduced,including vibration mechanism of drilling tool,operating life,lubricating mechanism and optimizing structure of air hammer.This paper presented two centralizers for air drilling horizontal well and vertical well and gyro wheel centralizer,solving the problems that mud drilling centralizer is used in air drilling.

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Available abstract

The development process of borehole deviation control technology was reviewed,and the causes and harm of borehole deviation incontrollable were presented,and the air hammer drilling,air screw drilling,enlarging borehole and keeping full technology and auto-preventing deviation technology were discussed in this paper.At present,air hammer drilling technology is more availability and feasibility.The research emphases of air hammer drilling technology were introduced,including vibration mechanism of drilling tool,operating life,lubricating mechanism and optimizing structure of air hammer.This paper presented two centralizers for air drilling horizontal well and vertical well and gyro wheel centralizer,solving the problems that mud drilling centralizer is used in air drilling.

Key concepts: Hammer, Borehole, Drilling, Measurement while drilling, Petroleum engineering, Directional drilling, Engineering, Drilling fluid

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