The Permian high quality reservoir was formed in the western thrust belt and underwent weak compaction with shallow burial and dissolution.
研究发现，西缘逆冲带砂体经历了浅埋藏弱压实和溶蚀作用，储集物性最优；
Shallow gas formations are of the characteristics of shallow burial depth, low compaction degree, unconsolidated cementation, easy sand producing etc.
浅气层具有埋藏浅、压实程度低、胶结疏松、生产时容易出砂的特点。
Main diagenesis of the syndiagenesis is carbonate cementation in the shallow lake sheet sands and rearrangement caused by compaction.
早成岩阶段的主要成岩作用是碳酸盐胶结作用以及压实作用引起的颗粒重排；
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