鄂尔多斯盆地东南缘下二叠统沉积相

近几年的勘探开发发现，鄂尔多斯盆地东南缘下二叠统具有巨大的非常规天然气资源潜力。为探明其沉积环境，在详细的岩心、测井及室内分析化验的基础上，运用沉积学理论，对鄂尔多斯盆地东南缘下二叠统沉积相进行研究。研究结果表明:太原组发育障壁岛、泻湖、潮坪、浅海陆棚沉积，山西组发育三角洲、湖泊沉积;自太原组至山西组沉积环境经历了由海陆过渡相至陆相的演化过程。

Sedimentary Facies of Lower Permian in Southeast of Ordos Basin

In recent years，enormous resource potential of unconventional gas has been found in the Lower Permian in southeast of Ordos Basin. Aimed at finding out the sedimentary environment, based on the detailed core，logging and indoor analysis，with the theory of sedimentology，the research on sedimentary facies in the Lower Permian in southeast of Ordos Basin were carried out. The results revealed that barrier, lagoon，tidal flat and neritic shelf facies developed in the Taiyuan Formation and that delta and lake fades developed in the Shanxi Formation. This paper concluded that the environment changed from transitional facies to terrestrial facies from Taiyuan Formation to Shanxi Formation.