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Influencing factor of Jiufuotang Formation hydrocarbon source rock for important fault depression in new exploration area of southern Songliao Basin
Author(s): Liu Yuhua, Zhang Jianli
Pages: 555-
559
Year: 2014
Issue:
5
Journal: Fault-Block Oil and Gas Field
Keyword: hydrocarbon source rock; controlling factor; Jiufuotang Formation; new exploration area of southern Songliao Basin;
Abstract: 以松南新区8个断陷22口探井所钻遇的暗色泥岩为研究对象,采用有机地球化学方法刻画了该区暗色泥岩的生烃潜力特征,总结出烃源岩发育控制因素.研究认为,松南新区九佛堂组烃源岩有机质丰度较高,有机质类型以Ⅰ和Ⅱ1型为主,少数为Ⅲ型,黑色泥岩及油页岩是该区优质烃源岩,但整体生烃能力有限,R0实测数据表明,烃源岩整体处于低熟—成熟演化阶段.裂陷强度控制了烃源岩的规模、质量,断陷结构影响烃源岩空间展布,反转强度控制烃源岩的定位和演化程度,火山背景促进了水生生物的繁盛以及优质烃源岩的形成.综合烃源岩评价结果认为,松南新区彰武、昌图、大冷断陷勘探前景最好.
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