论文部分内容阅读
鄂尔多斯盆地延长组岩石地层学和含油气层系划分的研究已愈百年。虽研究者众多,却观点不一。为了油田的准确、高效开发,同一区域内同一套岩石地层的含油气层系划分应该有统一的标准,岩石地层的划分是含油气层系划分的基础。鄂尔多斯盆地内中—晚三叠世形成的一套河—湖相沉积物的延长群含油气层系,由十个油层组(长1～长10)二级单位组成,其中长2油层组可分作3个油层段(长12～长32)。长12油层段又可进一步地细分、厘定为3个复(油)层和若干个单(油)层。
The study of lithostratigraphy and oil-bearing strata in the Yanchang Formation in the Ordos Basin has been more and more centennial. Although many researchers, but different opinions. For the accurate and efficient development of oilfields, there should be uniform standards for the division of petroliferous reservoirs in the same lithosphere within the same area. The division of lithostratigraphy is the basis for the division of oil-bearing gas reservoirs. The Ordos Basin, a mid-late Triassic fluvial-lacustrine sedimentary extension of the formation of the oil-bearing gas system, from the 10 reservoir group (Chang 1 to Chang 10) second-level units, which Chang 2 reservoir group Divided into three reservoir sections (length 12 ~ length 32). The Chang 12 reservoir section can be subdivided further into three complex (oil) layers and several single (oil) layers.