With the continuous development and improvement of horizontal well intersection drilling technology, it has been used in various fields, especially in salt brine mining wells. In the context of workover and drilling of the well pair of Well Y10 and Well Y9 in Ningjin Rock-salt Field, this paper systematically summarizes the well structure, drilling tool assembly, drilling fluid formulation, drilling parameters and drilling process, which provides valuable geological basis and practical experience for brine exploitation in this area.