石油实验地质2016，Vol.38Issue(5)：641-646,6.DOI:10.11781/sysydz201605641
鄂尔多斯盆地杭锦旗地区上古生界烃源岩热演化特征模拟研究
Thermal evolution modeling of Neopaleozoic source rocks in Hangjinqi region, Ordos Basin
摘要
Abstract
Taking the measured Ro values which reflected the characteristics of thermal evolution degree of source rocks as calibration, the thermal evolution history of source rocks of the Taiyuan Formation and members 1 and 2 of the Shanxi Formation in Neopaleozoic was modeled through erosion thickness restoration and the selection of ancient heat flow. We analyzed well logging data of different strata from more than 70 wells, and established a corresponding geological model. Source rocks reached the threshold of hydrocarbon generation ( Ro>0.65%) dur⁃ing the mid⁃late stage of Late Triassic in Xinzhao, Shilijiahan, Azhen and Haoraozhao areas in the western and southern Hangjinqi region and during the early stage of Early Jurassic in Gongkahan and Shiguhao areas in the northern Hangjinqi region. The thermal evolution degree of source rocks decreases from southwest to northeast in the study area. The maximum Ro values in Xinzhao and southern Shilijiahan are 1.43% and 1.46% respectively, reaching the over⁃mature stage of evolution. However, the Ro values in Shiguhao and Azhen areas in the northern and eastern Hangjinqi region range from 0.85%-1.0%, showing that the source rocks are still in the early stage of hydrocarbon generation peak.关键词
烃源岩/热演化/盆地模拟/上古生界/杭锦旗/鄂尔多斯盆地Key words
source rock/thermal evolution/basin modeling/Neopaleozoic/Hangjinqi/Basin Ordos分类
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赵桂萍..鄂尔多斯盆地杭锦旗地区上古生界烃源岩热演化特征模拟研究[J].石油实验地质,2016,38(5):641-646,6.基金项目
中国科学院知识创新工程重要方向项目（ Y225014EA2）资助。 （）
