The dynamic monitoring of coalbed methane reservoirs is limited by wellbore conditions,re-sulting in low monitoring efficiency and insufficient data,making it difficult to accurately analyze the de-velopment status of each layer.This limitation hinders the analysis of dynamic issues and the formulation of adjustment plans for coalbed methane development.Distributed fiber optic logging has been practically applied in a certain coalbed methane field in North China.It reflects the gas production dynamics of each layer in real-time under normal production conditions,monitors the changes in annular fluid level,and detects anomalies in the tubing during production,providing early warning of these anomalies.This paper analyzes the monitoring needs of coalbed methane development and the applicability of fiber optic monito-ring from the perspective of coalbed methane development characteristics.Through actual case studies,it demonstrates the role and effectiveness of distributed fiber optics in the dynamic monitoring of coalbed methane wells,to some extent resolving the challenges of multilayer coalbed methane extraction monito-ring.
NETL
NSTL
万方数据
