A Parametric Study of Horizontal and Multilateral Wells in Coalbed-Methane Reservoirs

摘要

The full-length paper attempts to identify the most appropriate drilling patterns for coalbed-methane(CBM)reservoirs of different thickness and with different characteristics.The comparison yardstick for this study is net present value(NPV).In this way,drilling cost is accounted for when comparing different horizontal and multilateral configurations.Dual-lateral,trilateral,quadlateral,and fishbone configurations were compared.Total horizontal well length as well as spacing between laterals(SBL)was studied.