鄂尔多斯盆地东部府谷地区太原组沉积相研究

Sedimentary Facies Study of the Taiyuan Formation in the Eastern Ordos Basin, Fugu Area

摘要: 目前我国在沉积学理论及研究方法方面已取得了显著的进展，并趋于完善与成熟。鄂尔多斯盆地东缘地区因含有丰富的油气藏而备受关注，本研究旨在填补鄂尔多斯盆地东部府谷地区太原组沉积相信息的空白。以我国陕西省榆林市府谷县二叠系太原组为具体研究对象，运用石油地质学、沉积学、地层学等理论知识，通过野外露头获取地层特征信息，结合测录井资料得到的测井曲线响应信息、样品照片的微观特征和变化规律等基础地质资料，完成了关键层位划分、构造特征识别、沉积背景分析、沉积类型特征分析等研究内容。通过对府谷地区太原组所分布的沉积亚相及微相展开研究，为该地区油气勘探开发提供了重要的基础数据和科学依据，有助于更好地了解该地区的地质环境和资源分布情况。

Abstract: At present, China has made remarkable progress in sedimentologic theory and research methods, and tends to improve and mature. The eastern edge of the Ordos Basin has attracted much attention because it contains rich oil and gas reservoirs, and this study aims to fill the gap of information on the depositional Facies of the Taiyuan Formation in the Fugu area in the eastern part of the Ordos Basin. Taking the Permian Taiyuan Formation in Fugu County, Yulin City, Shaanxi Province, China, as the specific research object, the study utilizes the theoretical knowledge of petroleum geology, sedimentology, stratigraphy, etc., and obtains stratigraphic feature information through field outcrops, and combines the basic geological information such as logging curve response information obtained from logging data, microscopic characteristics of the sample photographs and the rule of change, to complete the research contents such as the division of the key stratigraphic position, the identification of tectonic features, the analysis of sedimentary background, and the characterization of the sedimentary type. We have accomplished the division of key layers, identification of tectonic features, analysis of sedimentary background and characterization of sedimentary types. The study of sedimentary subfacies and microfacies of Taiyuan Group in Fugu area provides important basic data and scientific basis for oil and gas exploration and development in the area, and helps to better understand the geological environment and resource distribution in the area.