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Origin of Heavy Oil in Taobao Area of Southern Songliao Basin
Author(s): MIAO Hongbo, SUN Yan, SONG Lei, ZUO Chunmei, LIU Chunge
Pages: 26-
28
Year: 2009
Issue:
4
Journal: China Petroleum Exploration
Keyword: 松辽盆地; 西部斜坡; 套保; 稠油; 碳同位索; 油源对比;
Abstract: 利用地球化学技术手段,结合地质背景资料,对松辽盆地南部套保稠油的形成过程进行研究.综合分析认为,套保地区的原油来自东侧的中央坳陷青山口组,经过长距离(约50km)的油气运移,被套保逆断层截挡,聚集在套保地区.由于运移距离长,储层的层析、过滤作用导致原油凝固点低、沥青质含量低,同时地层水的氧化、水洗作用和生物降解作用使本区原油变重,变稠,胶质含量高,从而形成具有一定特点的稠油.
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