Evaluation of Coalbed Methane Fracturing Effectiveness Based on Microseismic Fracture Monitoring Technology:A Case Study of DC1 Well Group in Liupanshui District,Guizhou Province
As a major province with rich coalbed methane resources,Guizhou has coal reservoirs with complex characteristics,requiring technological transformations such as hydraulic fracturing.Microseismic monitoring technology can effectively evaluate the effect of hydraulic fracturing,providing a basis for optimized design and decision-making.By applying microseismic fracture monitoring technology to monitor the fracturing operations of three coalbed methane wells in Liupanshui District,geometric parameters such as the distribution range and extension direction of the fracture network were obtained.The results showed that the overall extension direction of the fracturing fractures was approximately 130°,which was basically consistent with the direction of the maximum principal stress.The fracture length ranged from 200 m to 280 m,indicating a generally good overall extension length.Through the evaluation of the fracturing effect,the impact of natural fractures on the development of the fracture network was analyzed,providing effective guidance for the adjustment of fracturing operations and the evaluation of post-fracturing effects.This approach achieved good results and provided an effective reference for the improvement of fracturing processes in later stages of the work area.
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