鄂尔多斯盆地冯地坑—洪德长8油层组湖岸线确定  

DETERMINATION OF LAKE SHORELINE FOR CHANG-8 OIL FORMATION IN FENGDIKENG-HONGDE REGION OF ORDOS BASIN

作　　者：刘启亮[1] 刘良刚[1] 何珍[1] 刘启伟[2] 李士涛[1] 朱俊强[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]胜利油田分公司孤岛采油厂,山东东营257231

出　　处：《海洋地质前沿》2011年第4期38-44,共7页Marine Geology Frontiers

基　　金：冯地坑-洪德长8-长4+5成藏控制因素及评价目标研究

摘　　要：以鄂尔多斯盆地冯地坑—洪德地区延长组长8油层组为例,重点通过对研究区铁元素地球化学特征的研究划分出湖岸线的大致位置,并进一步结合辫状河三角洲平原和前缘在岩性、粒度、沉积构造、生物化石、沉积层序等方面的不同特征,精确确定了研究区长8油层组时期辫状河三角洲平原与前缘的界限,即湖岸线的位置,为该区进一步的油气勘探和有利区块预测提供可靠的地质依据。The rough location of lake shoreline was confirmed for the Chang-8 oil Formation of the Yanchang Formation from Fengdikeng-Hongde area of Erdos basin,through the integrated study of geochemical patterns of Fe element in combination with lithology,grain size distribution,sedimentary structures,fossils and stratigraphic sequences.Integrated information from the region made it possible to precisely draw out the boundary between the braided river delta plain and delta front during the period the Chang-8 oil Formation was deposited.The boundary,in fact,is close to the shoreline of the lake.The results offered a reliable geological reference for palaeogeographic reconstruction and are very helpful for oil and gas exploration in the region.

关 键 词：鄂尔多斯盆地 湖岸线 延长组 辫状河三角洲 

分 类 号：TE121.31[石油与天然气工程—油气勘探]