Abstract: By using the cross-top technology of horizontal well,the goldtrace of the horizontalwell is designed just below the conformity, vertical to the strike of the reservoir formation todiscover the oil reservoir to a maximum extent and to reduce the risk of exploration to a mini-mum extent; the goldtrace of other well is designed at a direction parallel to the strike of thereservoir formation to enhance the production of a single well and enhance the recovery factorto a max. extent. According to the above principle 4 types and 5 wells: a horizontal prospecting well,a cluster rnulti-functional well,a horizontal evaluation well,a horizontal alley well,designed to examine the unconformity oil reservoir on the northeast slope of the Cheng Dongprotrusion.A set of method for the design and application of horizontal well technology in anunconformity oil reservoir is,thus,summerized to give obvious economical and serial benefits.

Key words: structure, unconformity, reservoir, horizontal well, design

摘要： 水平油田位于埕东凸起东北坡,是一个地层不整合油藏.它油层薄、倾角大、含油高度低,在平面上呈窄条带状分布.直井勘探、开发风险性极大.利用水平井的切顶穿越技术,把“黄金轨迹”设计在不整合面下垂直于储层走向,达到最大限度地发现油层,最大限度地降低勘探风险;把“黄金轨迹”设计在不整合面下平行于储层走向,最大限度地提高单井产量,提高油层采收率.在水平油田先后设计出水平预探井、水平评价井、多底多功能水平井、水平巷道井五口四种类型的水平井,实现了埕东凸起东北坡不整合油藏的整体解剖;井总结出一套不整合油藏水平井井位设计及其在钻井中的应用方法,取得了明显的经济效益和社会效益.

关键词: 构造, 不整合, 油气藏, 水平井, 设计