digenesis

1. The deep conglomerate gas reservoir is buried deeply; Its composition is complex; digenesis is strong and distribution is complex. The reservoir prediction and reservoir characteristics become the most critical constraint issues for gas field development.
   深层砾岩气储层埋藏深、成分复杂、成岩作用强烈、分布规律复杂，储层特征及储层预测成为制约气田开发的最关键问题。

noun

1. alternation of sexual and asexual generations

   Synonym:    metagenesis