摘要
通过准同生白云岩中石膏斑晶的形成及暴露潮坪环境双层水透镜体古水文模式的建立，合理的解释了中部气田主要产层溶蚀孔洞的成因机理及发育特征，并根据孔洞内充填物的碳、氧同位素、稀土元素地球化学特征，具体划分了溶蚀孔洞的演化期次及其与烃类运聚的配置关系，从而为古岩溶储集层的成藏规律研究开拓了思路。
Based on the formation of gypsum in syngenetic-dolomits and the establishment of paleohydrodynamic model for bilayer water lens in the tidal flat environment, the paper made outreasonable interpretation about the genesis mechanism and evolution characteristics of dissolved caves in the main production formation of the central gasfield.According to the isotopic characteristics of hydrogen, oxygen in the fillings of caves,and geochemical characteristics of rareearth elements, the evolution stage of cave dissolutionand its assembly relations to the migration of hydrocarbon have been divided. This papercould provide the evidence for the research of paleokarst reserviors and the rule of pool formation.
