To achieve efficient development of coalbed methane reservoirs,reservoir reconstruction is nec-essary,with hydraulic fracturing being the most crucial method.Due to issues such as difficult sand addi-tion,easy sand plugging,short support joint length,and limited reconstruction range,the conventional sand liquid combination of"active water+quartz sand"can no longer meet the needs of fracturing recon-struction.Therefore,a self-suspending fracturing liquid system is proposed from the perspective of proppant to improve the effectiveness of fracturing reconstruction.In this paper,laboratory experiments are carried out to evaluate the suspension performance,rheology performance,glue-breaking performance,fracture flu-id residue content and core damage of the system.Combined with fracture conductivity simulation,fracture monitoring results and actual gas production,it is verified that the sand addition mode with a combination of self-suspending proppant and quartz sand could improve the fracturing effects and significantly increase gas production of coalbed methane wells.This approach can be further applied in field operations.
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