Abstract: In 2017, Baker Hughes used only three and a half days to complete drilling of a shale horizontal well with a depth of 5405 meters in DJ Basin, Wyoming State, USA. This paper analyzes the experience of this well’s success, including optimization of wellbore structure, application of high-efficiency drilling bit, use of oil-base drilling fluid for angle buildup section and horizontal section, application of buildup rate RSS, intensified drilling parameters, and use of the remote decision-making center. In the drilling of shale horizontal well in the United States, one-trip drilling is quite common for single well section, widely used for dual well sections and on the rise for multiple well sections. As a result, the drilling period is significantly shortened while the drilling cost is dramatically reduced. One-trip drilling is a project of system and also a key project for drilling horizontal wells at a higher speed and a lower cost. China is left behind in application of one-trip drilling technology as compared to the United States. It is necessary to pay attention to the necessity and likeliness of one-trip drilling and promote application of this technology. It is necessary to adopt a series of technological and managerial measures to promote large-scale shale gas development, such as optimization of drilling plan design, application of good-quality and high-efficiency drilling bit, release of promotion and incentive methods, establishment of information sharing platform, and modernization and remote decision-making center.

摘要： 贝克休斯公司2017 年在美国怀俄明州DJ 盆地仅用3.5d 就成功完钻一口5405m 深的页岩水平井。分析 该井的成功经验，包括优化井身结构、应用高效钻头、造斜段和水平段改用油基钻井液、应用高造斜率旋转导向钻井 系统、强化参数钻井、远程决策中心等。美国在页岩水平井钻井中，单井段一趟钻已成为常态，双井段一趟钻推广应 用，多井段一趟钻持续增加，由此促进了钻井周期大幅缩短、钻井成本大幅下降。一趟钻是一项系统工程，也是水平 井提速降本的牛鼻子工程。我国在一趟钻技术应用上与美国相比还存在一定差距，今后应充分认识一趟钻的必要性和 可能性，加大推广应用力度，在技术和管理上要优化钻井方案设计、应用优质高效钻头、出台推广和激励办法、建立 信息共享平台、推广并升级远程决策支持中心，以促进页岩气规模效益开发。

关键词: 一趟钻；页岩水平井；提速降本；强化参数钻井；地质&mdash, 油藏&mdash, 工程一体化