近年来，以鄂尔多斯盆地延长组为代表的湖相异重流沉积研究取得了重要进展，但有两个关键科学问题尚不明确：天文周期驱动的高频气候旋回如何控制异重流沉积？高频气候旋回和异重流沉积如何影响有机质富集？在天文地质年代研究向“深时”和高精度方向发展、非常规油气开发研究趋向精细化的当下，以异重流沉积和油页岩发育的延长组长7油层组为例，以浅钻取心、数据采集、样品分析和测井资料为基础，应用天文周期和气候旋回识别、异重流沉积细粒岩识别和有机质富集效应分析3项关键技术，研究天文周期驱动的气候旋回对异重流沉积的控制作用以及后者对前者的响应，明确高频气候旋回、异重流沉积对有机质富集的影响及其作用机理。项目具有重要的地质科学研究价值和页岩油气开发现实意义：不仅为“三叠纪天文年代标尺”这一国际前沿领域提供参照，而且为该盆地中生界烃源岩成因机理研究奠定地质学基础，还可为长7油层组页岩油气开发提供高分辨率地层划分对比依据。

In recent years, important progress has been made in the study of lacustrine hyperpycnal flow deposits represented by the Yanchang formation in the Ordos Basin. However, two key scientific issues remain unclear. How did the orbital forced high frequency climatic changes control the hyperpycnal flow deposition? How did high frequency climatic cycles and hyperpycnal flow deposits affect the enrichment of organic matter? Nowadays, the development of astronomical geological age towards "deep time" and high precision, and the study of unconventional oil and gas development tends to be fine and accurate. Taking the well developed hyperpycnal flow deposition and kerogen shale in lacustrine strata of the 7th oil member of Yanchang Formation as an example, three key techniques, namely astronomical cycle and climatic cycle identification, identification of hyperpycnal flow deposited fine-grained rocks and analysis of organic matter enrichment effect, are applied, on basis of shallow drilling core, data acquisition, sample analysis and logging data. Studies will be conducted about the control of orbital forced climatic changes on hyperpycnal flow deposition and the response of the latter to the former. The effects will be clarified that high frequency climatic cycles and hyperpycnal flow deposition impacted on organic matter enrichment and the mechanism of action. The project has important geological scientific research value and practical significance of unconventional shale oil and shale gas development. It can not only provides an analogue for the "Triassic astronomical chronograph", which is an international research frontier, but also lays a geological foundation for the study of genetic mechanism of the Mesozoic source rocks in the basin. Moreover, it may provides a high-resolution stratigraphic division and correlation basis for unconventional oil and gas development of the 7th oil member of Yanchang Formation.