塔里木盆地台盆区有效烃源研究进展

Progresses in the Research of Effective Source Rocks in Craton Area in Tarim Basin

以有效烃源岩分布与演化、成藏期确定等为研究重点,确定了塔里木盆地台盆区寒武系-奥陶系烃源岩的发育层系及横向展布,探讨了不同地质历史时期有效烃源岩层系及展布,从反演(由藏到源)的角度,进行台盆区海相原油烃源对比,提出中下奥陶统烃源岩可能为台盆区海相原油主力烃源岩,认为海西晚期为海相油气藏的主要成藏期。在总结油气成藏主控因素与分布规律的基础上,提出了有利的油气勘探方向。

With the distribution and evolution of effective source rocks and the determination of oil & gas pool-forming period as research key points, the developing sets and lateral distribution of the Cambrian-Ordovician source rocks are determined. Also the effective source rock sets and distribution in geological history are discussed. From the angle of pool to source, the marine oil-source correlation in the craton areas is carried out. The Low-Middle Ordovician as the main source rock and Late Hercynian as the main pool-forming period are suggested. On the basis of summarizing of controlling factors and distribution rules of oil & gas pool-forming, beneficial exploration trends of oil & gas pool is proposed.