报道苏丹输油管道工程中应用水平定向钻技术穿越尼罗河的施工方法，介绍了穿越带的地质情况以及钻导向孔、扩孔、回拖管线、泥浆处理等施工的关键环节。 This paper reports the construction methods of horizontal directional drilling technology crossing the Nile River in the Sudan pipeline project, introduces the geological conditions of the crossing belt as well as the key links such as the pilot hole, reaming, drag line and mud treatment.