This paper analyses main sidetrack technique difficulties in old wells in Zhongyuan Oilfield, presents engineering technique measures, present states, applications and developments of this technology.

• 详细分析了中原油田老井侧钻的主要技术难点,给出了其工程技术措施,介绍了该油田老井侧钻技术的现状及在中原油田的应用情况,并对其应用与技术发展进行了展望。