冲积扇扇体沉积特征与形态的刻画Sedimentary Characteristics and Detection of Alluvial Fans Body
龚福华, 陈开研, 李笑天, 刘明军, 梅华平, 张福榕
准噶尔盆地西北缘, 二叠系, 五八区, 上乌尔禾组, 冲积扇, 扇体的刻画, 一扇一藏Northwest Edge of Junggar Basin, Permian System, 5-8-Area, Upper-Wuerhe Group, Alluvial Fan, Distribution of Fan Bodies, “Where There Is Alluvial Fan, There Is Oil or Gas”
《Advances in Geosciences》, Vol.4 No.2, 2014-04-21
There widely exist coarse granular detrital rocks, such as conglomerate, sandy gravels, in middle- late permian series of northwest edge of Junggar Basin. Based on the analysis of the data on well drilling, logging and seism, we have recognized that alluvial fan and fan delta facies are widely developed in upper-WuErHe group of 5-8-area. Alluvial fan facies can be divided into three subfacies (fan-root, fan-middle and fan-terminal) and ten micro-facies. According to the detection of each fan body, the distribution and superimposed relationship of fan bodies can be well detected. As the traditional saying goes, “where there is alluvial fan, there is oil or gas”, it plays an important role in hydrocarbon exploration and production.