科学钻探取心钻进方法的改进和发展

Improvement and Development of Core Drilling Method in Scientific Drilling

介绍了绳索取心液动锤、不提钻换钻头、不提钻换钻头一冲击回转取心、不提钻换钻头一孔底马达、智能式绳索取心等几种适合于小直径科学深孔钻进的取心钻进系统的特点、优缺点、目前研制和使用状况，提出了今后研究工作的方向。

This paper deseribes features,advantages, disadvantages,present development and application status of a few core drilling systems, suitable for scientific slim hole deep drilling, including wireline coring with hydro- hammers, retractable bit systems, retractable bit system-percussive rotary coring, retractable bit system- down hole motors, and intelligent wire-line coring, with future trend presented.