大庆长垣扶余油层古物源体系研究

REBUILDING OF PALEOPROVENANCE SYSTEMS OF FUYU OIL- LAYER IN DAQING PLACANTICLINE

大庆长垣是松辽盆地北部最重要的含油气构造。扶余油层是其主要含油层位之一,是研究区内的重要油气勘探层段。有利储层的时空展布与源区位置、物源方向是有密切的成生联系的,因此物源体系分析是油气勘探工作的重点任务之一。本文采用重矿物的统计分析(Q型聚类方法、ZTR指数分析)和砂体变化趋势分析作为主要研究手段,进而划分出不同的矿物组合分区。确定对大庆长垣扶余油层沉积起控制作用的物源区有2个,分别来自研究区的北部和南部。这2个物源区分别对大庆长垣的不同区域的沉积产生重要影响和控制作用。

Daqing Placanticline is the most important oil- gas structure in the SongLiao basin. and the Fuyang oil formation is one of the main oil- bearing formation,in addition,is the important exploration intervals in the research area. There is intimate relationship between the time and space distribution of the fine sandbody and the location and direction of provenance. So,the analysis of provenance systems is one of the important works in exploring oil and gas. The study means include statistics and analysis of the heavy minerals( the Q- mode cluster analysis and ZTR index analysis) and content of sandbody,and then division is made based on different mineral assemblage,it is determined that there are 2 mineral areas controlling the deposition in Daqing Placanticline as follows: the Northern area and the Southern area. These 2 material areas influence and control the deposition in different regions in Daqing Plicanticline respectively