富县探区延长组重矿物组合特征及地质意义  

Heavy Minerals Characters and Geologic Significance of Yanchang Formation in Fuxian Exploration Area,Ordos Basin

作　　者：张新建[1] 张剑君[2] 

机构地区：[1]中国地质大学(北京),北京100083 [2]中国石化中原油田分公司勘探开发科学研究院,河南濮阳457001

出　　处：《新疆石油地质》2006年第1期49-52,共4页Xinjiang Petroleum Geology

摘　　要：查明探区的古水流、物源方向等对于储集层预测和圈闭评价有重大意义。富县探区位于鄂尔多斯盆地的东南部,紧邻湖区,近年来对该区古水流流向、物源方向的争论较多。应用重矿物组合特征分析方法,对该区三叠系延长组重点层段的重矿物组合特征进行了分析、研究,结合露头古水流测量结果及区域岩相古地理特征等,指出区内延长组沉积物源于盆地东北部,古水流总体指向西南部。Proper understanding of paleocurrent and source direction in study area at stage of hydrocarbon prospecting is of great significance for the reservoir prediction and the trap evaluation. Fuxian exploration area is located in the southeastern Ordos basin, adjacent to lacustrine sedimentary area of the basin. In recent years, there are some debates about the directions of paleocurrent and sources. There are many kinds of methods for source analysis such as heavy minerals ,nethod, sedimentology method and geochemistry method. The heavy mineral analysis method is applied to analyze the characteristics of Yanchang heavy minerals in study area. Combined with the paleocurrent survey data of the outcrops and the regional lithofacies paleogeography feature, it is pointed out that the sediments in this exploration originate from the northeastern Ordos basin and the paleocurrent directions point to the southwest on the whole.

关 键 词：富县 延长组 重矿物 特征 物源区 

分 类 号：TE111.3[石油与天然气工程—油气勘探]