Abstract: Coiled tubing service technology has a series of advantages, such as high automation, short operational period, high safety coefficient, snubbing service and protection of formation. This technology is especially suitable for complicated downhole services and handling emergence cases like horizontal well and slim-hole well. Taking Dun-1 H Well for instance, this article makes briefings about the complicated conditions of this well and the bottlenecks for downhole services. It also introduces the integrated coiled tubing service process based on combination of procedures, such as using f 50.8mm coiled tubing for flushing, logging depth correction, multi-cluster hydraulic jet and perforation, and gas lift displacement of liquid. Field application indicated that with the technological advantages of coiled tubing service and its multi-process assemblage superiorities, integration of well drifting and flushing and logging accurate depth correction were brought about in the complicated segment of the slim-hole horizontal well, thus competing one-trip string multi-cluster jet perforation service, which is difficult to be completed in the downhole service of conventional process. Coiled tubing process technology is high in operational efficiency and remarkable for service results, solving the on-the-site bottlenecks. This well was tested to produce two tons of crude oil per day in the wake of service, satisfying the follow-up fracturing conditions.

摘要： 连续管作业技术具有自动化程度高、起下速度快、安全系数高、带压作业、保护储层等优点，适用于 水平井和小井眼井等复杂井下作业及应急处理。以玉门油田墩1H 井为例，介绍了该井的井况、施工难点，以及实施 f 50.8mm 连续管通洗井、储存式测井校深、多簇水力喷砂射孔及气举排液等多工艺的全工序井下作业。该井应用表明， 充分利用连续管作业技术特点，发挥其多工艺组合作业优势，在小井眼水平井的复杂井段中实现了通洗井一体化、测 井精确校深，完成了钻杆完井管柱一趟管柱多簇喷砂射孔作业等常规工艺难以实现的井下作业。施工效率高、作业效 果好，解决了现场难题，施工后该井试油日产原油近2t，满足了后续压裂条件。

关键词: 水平井, 小井眼井, 连续管, 全工序作业, 多工艺组合