Characteristics and control mechanisms of coalbed permeability change in various gas production stages

@article{Tang2015CharacteristicsAC,
  title={Characteristics and control mechanisms of coalbed permeability change in various gas production stages},
  author={Dazhen Tang and Chunmiao Deng and Yanjun Meng and Zhiping Li and Hao Shu Xu and Shu Tao and Song Li},
  journal={Petroleum Science},
  year={2015},
  volume={12},
  pages={684-691}
}
According to dimensionless analysis of the coalbed methane (CBM) production data of Fanzhuang block in southern Qinshui basin, the dimensionless gas production rate is calculated to quantitatively divide the CBM well production process into four stages, i.e., drainage stage, unstable gas production stage, stable gas production stage, and gas production decline stage. By the material balance method, the coal reservoir permeability change in different stages is quantitatively characterized. The… CONTINUE READING
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