With the case of H17/H18 butt well in brine transportation project of a salt and chemical company in Shandong, the paper introduces the application of directional drilling and butting technology for brine wells and the design of directional drilling trajectory, which is based on the detailed formations exploration; and also introduces the construction technology of directional horizontal well. For this project, the key technologies are drilling fluid selection and parameter control in the drilling process; and what''s more, MWD inclinometer technology and rotating magnet ranging system (RMRS) are used to measure the real-time drilling direction and then adjust the drilling direction according to the needs of the project in order to ensure the successful well butting. The difficulties in this project construction process and the technical countermeasures can be reference for the similar drilling construction.