沉积学报2012，Vol.30Issue(6)：1042-1052,11.
鄂尔多斯盆地富县地区上三叠统延长组砂质碎屑流沉积特征及其油气勘探意义
Sedimentary Characteristics and the Significance of Petroleum Exploration of Sandy Debris Flows of Yanchang Formation of the Upper Triassin, Fuxian Area, Ordos Basin
摘要
Abstract
According to the analysis for cores, seismic interpretation and well-logging , the authors have thoroughly studied the sedimentary facies types and characters of Yanchang Formation of the Upper Triassic in the south Ordos Basin with thin sections and grain size analysis and a great deal of indoor testing data. The authors have proposed that the sedimentary facies type of Chang 9 to Chang 6 of Yanchang Formation is sandy debris flows. With basin sedimen- tary and evolutionary background, the genetic mechanism of the sand debris flows have been discussed, and detailed studies have been made on the rock types and sedimentary structures of the sandy debris flows, build up relevant sedi- mentary models. The results indicate that the sandy debris flows deposit is composed of two genetic facies of massive- bedded siltsand and packsand and mud pebble siltsand and packsand, which indicate deposition from delta-front sand during slip and slump under outside function of energy. Relationship between sandy debris flow depositional systems and distribution of oil and gas are elaborated in detail. It is considered that sandy debris flow deposits are injection migration oil-gas accumulation types and classic lithologic hydrocarbon reservoir, which are the most favorable sedi- mentary facies belt for the generation of Yanchang Formation reservoirs.关键词
富县地区/延长组/砂质碎屑流/沉积特征/油气勘探意义Key words
Fuxian area/Yanchang Formation/sandy debris flows/sedimentary characteristics/significance of pe- troleum exploration分类
天文与地球科学引用本文复制引用
陈飞,胡光义,孙立春,樊太亮,高志前,于喜通,庞正炼..鄂尔多斯盆地富县地区上三叠统延长组砂质碎屑流沉积特征及其油气勘探意义[J].沉积学报,2012,30(6):1042-1052,11.基金项目
中国石化勘探东北分公司生产科研项目（编号：GBFKT-07YZ-017）资助. （）
