The Jurassic sedimentary environment of Yanqi Basin has lots of deep-water sedimentary features in coal-bearing beds. 對新疆焉耆盆地沉積環境的研究發現，其侏羅系含煤系地層具有大量深水沉積特徵，與傳統淺水成煤的觀點相悖。
It is the primary sedimentary characteristics of sandstone and the fine porethroat distribution preponderant through diagenesis modification that caused low permeabili-ty. 砂岩原始沉積特徵和成岩作用改造后細孔喉分佈優勢是導致低滲透的原因。
