苏浙皖地区：中—古生界海相烃源岩及含油气性

从晚震旦世开始至中三叠世，苏泊皖地区沉积了三套巨厚的烃源岩系：上震旦统－上奥陶统，石炭系－二叠系、下三叠统。三套烃源岩热演化特点不同，特别是下古生界油源岩经历了加里东、印支－燕山期构造阶段的热演化，已达过成熟干气阶段；上古生界基本处于生油阶段晚期；三叠系大部处于成熟生油阶段，少数处于未成熟阶段。区内下古生界烃源岩经历了两次成油过程，第一次在加里东运动前的盆地沉降阶段，第二次在中里东运动后晚古生代陆

Mesozoic-Paleozoic Marine Source Rock and Petroleum Prospecting in Jiangsu-Zhejiang-Anhui Area

Three sets of hugely thick source rocks of Upper Sinian-Upper Ordovician,Carboniferous-Permian and Lower Triassic were deposited in Jiangsu-Zhejiang-Anhui area from Late Sinian to Middle Triassic.These three sets of source rocks have their different thermal evolution characteristics,especially Lower Paleozoic source rock,having undergone Caledonian, Indosinian-Yanshan structural movements,is now up to the stage of over matured dry-gas;for Upper Paleozoic source rock,it is mainly in the late stage of oil generation;concerning Triassic,it is mostly in mature and oil generation stage,only a few in immature stage.The Lower Paleozoic source rock in the region has undergone two oil generation processes,the first one has taken place in basin subsidence before Caledonian movement.The goal of Lower Paleozoic petroleum exploration should be at northern Jiangsu.For Upper Paleozoic,besides northern Jiangsu,it may also be at southern Anhui and western Zheliang.Several Mesozoic basins,such as Changzhou, Jurong,Wuwei,Wangjiang,etc.,may be the goals related to Lower Triassic source rock.