摘要
鄂尔多斯盆地含油气系统研究目前尚无成熟的划分方案和系统成果,本文主要依据油气赋存的层位并参考油气源将其划分为下古生界含气系统、上古生界含气系统及中生界含油气系统。各含油(气)系统平面分布范围主要受生油岩、储集岩分布和油气运移方向的控制;其中,下古生界含气系统、中生界含油气系统主要分布于盆地中部。上古生界含气系统主要分布于盆地北部。
There is no perfect classification scheme and systemic result at present for the study of petroleum system in Ordos Basin. According to the oil-bearing formations and the origin of oil and gas, the petroleum system of Ordos Basin can be divided into Lower Paleozoic Petroleum System, Upper Paleozoic Petroleum System andMesozoic Potroleum System in this paper. The plane distribution of these systems was mainly controlled by the distribution of source rock and reservoir, and the direction of oil-gas migration. Generally speaking, Lower Paleozoic Petroleum System and Mesozoic Petroleum System were mainly distributed in the middle of the basin, but Upper Paieozoic Petroleum system in the north of the basin.
