石油实验地质Issue(5)：575-581,7.DOI:10.11781/sysydz201505575
鄂尔多斯盆地宜君地区长3油层组沉积体系及砂体展布
Depositional system and sand body distribution in the third member of the Yanchang Formation in the Yijun area in the southern Ordos Basin
摘要
Abstract
The southern Ordos Basin is an important oil⁃producing area in China and the third member of the Upper Triassic Yanchang Formation in the Yijun area in the southern Ordos Basin is a major hydrocarbon explo⁃ration target. Based on well logs and 3D seismic data, the provenance of the study area was studied using cathode luminescence, seismic progradation tendency and angle conversion methods. The Yijun area was influenced by the Weibei uplift in the south during the Late Triassic. The deposition system in the study area developed when the third member of the Yanchang Formation was deposited, and this provenance controlled the distribution of sand bodies. Braided river delta⁃front sediments were widespread in the study area, and subsea river channels and mouth bar sand bodies were favorable reservoirs for hydrocarbons. The distribution of sand bodies and features of the sedimentary facies from the third section to the first section of the third member of the Yanchang Formation were studied to determine its potential for hydrocarbon reservoirs.关键词
物源/沉积相/砂体展布/长3油层组/宜君地区/鄂尔多斯盆地Key words
provenance/sedimentary facies/sand body distribution/third member of Yanchang Formation/Yijun exploration area/Ordos Basin分类
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吴吉元,冯琳,刘树平,刘晓晨,陈林,彭丽..鄂尔多斯盆地宜君地区长3油层组沉积体系及砂体展布[J].石油实验地质,2015,(5):575-581,7.基金项目
国家自然科学基金（青年科学基金）项目（41002045）资助。 （）
