塔里木盆地寒武──奥陶系石油地质特征

Petroleum Geologic Features of Cambrian-Ordovician in Tarim Basin

塔里木盆地是在古生代地台基础上发展起来的中──新生代叠合型含油气盆地。由于盆地长期处于相对稳定的大地构造环境，这就为油气的生成、聚集、保存提供了有利的地质条件。从盆地内发现的多处地面油气显示和目前钻井获得的高产油气流，都证实了塔里木盆地的油气资源是非常丰富的。特别是在盆地内发现的多套生油层系中，寒武──奥陶系为最佳。为此，本文就从寒武──奥陶系的石油地质特征入手，来探讨油气的分布规律。

Tarim Basin is a Mesozoic-Cenozoic superimposed oil-bearing basin developed from the Paleozoic platform. As it has long been in relatively stable tectonic setting, it provides the favourable geologic conditions for oil-gas generation, accumulation and preservation. A lot of oil and gas seepages and the prolific oil-gas wells indicate that Tarim Basin is rich in oil-gas resources. Among the multi-oil-generating beds, the Cambrian and Ordovician is the best one. According to the Cabrian and Ordovician petroleum geologic features, the author analyzes the oil-bearing potential in the basin.