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(huán)境的研究發(fā)現，其侏羅系含煤系地層具有大量深水沉積特征，與傳統淺水成煤的觀(guān)點(diǎn)相悖。
It is the primary sedimentary characteristics of sandstone and the fine porethroat distribution preponderant through diagenesis modification that caused low permeabili-ty. 砂巖原始沉積特征和成巖作用改造后細孔喉分布優(yōu)勢是導致低滲透的原因。
