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

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.