利用盖层实验分析资料对辽南地区天然气盖层进行评价,认为盖层质量和沉积环境、有机质含量、压实和成岩作用有关。指出了盖层形成时间及储盖匹配的关系。对火山岩盖层进行了评价,认为未蚀变玄武岩有极好的封闭性能。 Based on the experimental data of caprock, gas caprock in southern Liaoning was evaluated. It is concluded that the quality of caprock is related to depositional environment, organic matter content, compaction and diagenesis. The relationship between the formation time of cover and the matching of storage and cover is pointed out. The volcanic cap rocks were evaluated and the non-altered basalts are considered to have excellent sealing properties.