以塔中S井为例,根据储层显微特征、油砂饱和烃色谱、含烃包裹体及成岩演化分析,志留系油气藏形成具有多期充注的特点,受构造演化和储盖输导条件的控制,经历了成藏—破坏—再形成的过程,在输导体系(砂体、断裂)发育的情况下,晚期充注及其充注规模是形成工业油气成藏的关键。 Taking Well S in Tazhong as an example, the Silurian oil-gas reservoir has the characteristics of multi-period filling according to the microscopic characteristics of reservoirs, oil-gas saturated hydrocarbon chromatograms, hydrocarbon-bearing inclusions and diagenetic evolution. The control of the transport conditions has gone through the processes of reservoir formation, destruction and reformation. In the case of the development of the transport system (sand bodies and faults), the late charge and its charge scale are the keys to forming the industrial hydrocarbon accumulation.