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通过井下煤储层观察查明了井下原生煤粉主要呈构造煤集合体状态赋存,根据其赋存特征分为断层煤粉源与顺层煤粉源,将井下原生煤粉与煤层气井产出的煤粉进行煤粉成分与微观特征的对比研究,发现煤层气井产出煤粉的煤粉成分与微观特征都与顺层煤粉特征一致,说明煤层气井的煤粉来源主要为顺层煤粉源。查明煤层气井煤粉的特征与来源为控制煤粉产出奠定了科学基础。
Through the observation of downhole coal reservoirs, it was found that the underground primary coal pulverized coal is mainly in the state of tectonic coal assemblage. According to its occurrence characteristics, it is divided into fault coal dust source and bedding coal dust source. The primary coal pulverized coal well and coalbed methane well production The results show that the composition and microscopic characteristics of pulverized coal produced by coalbed methane well are consistent with the characteristics of pulverized coal, which indicates that the source of pulverized coal in coalbed methane well is mainly coal Fengyuan. Identifying the characteristics and sources of CBM coal pulverized coal laid a scientific foundation for controlling coal output.