煤层气水平分支井钻井是煤层气工业发展过程中经常采用的钻井技术。煤层气水平分支井分为主支和多个分支,因其样子像羽毛,在煤层气工业中又称其为羽状水平井[1],如果有两个主支叫双羽状水平分支井,本文结合某煤层气田双羽状分支井中曲率轨道设计,总结分析该类井的轨道设计方法,主要包括设计基础数据的收集,设计原则及设计方法。 CBM horizontal branch well drilling is a commonly used drilling technology in the development of coalbed methane industry. The CBM horizontal branch wells are divided into main branch and multiple branches. Because they look like feathers, they are also called pinnate horizontal wells in CBM industry [1]. If there are two main branches called double pinnate horizontal branch wells Based on the design of curvature orbit in double feathery branch wells of a coalbed methane field, this paper summarizes and analyzes the orbit design methods of such wells, including the collection of basic design data, design principles and design methods.