Meanwhile, a set of natural gas geologicaltheory has been established including gas source, migration, accumulation and storage.
同时，初步形成了一套包括天然气生成，运移，聚集，保存的地质理论。
2
Based on the existing petroleum geologicaltheory, statistic method can be used to find out the internal relationships among variables in order to guide the exploration and development of petroleum.
He was responsible for the the recognition of geological strata, and the theory that successive layers of geological formations (strata) contained a fossil record of life in chronological order.