摘要
吉木萨尔凹陷东斜坡区二叠系梧桶沟组和平地泉组储层发现稠油/沥青。原油碳同位素和生物标志化合物对比表明二叠系储层的稠油来自凹陷二叠系平地泉组源岩。分析了二叠系稠油的成因,指出该区稠油是低成熟与生物降解共同作用的结果。建立吉木萨尔凹陷东斜坡区的成藏模式,指出稠油/沥青与岩性可形成封堵作用,进而在斜坡区的下倾方向可找到来自二叠系来源的正常油藏。
Heavy oil and asphalt are found in Wutonggou and Pingdiquan formation of Permain in the east slope of Jimusaer sag. Oil of Wutonggou and Pingdiquan formation came from Pingdiquan group source rock of Permain by biomarker and carbon isotope correlateion. It is pointed that heavy oil is result of biodegradation in the paper. Oil reserveoir formation mode is established ,and heavy oil and asphalt as well as lithostrtigraphic may plug for oil and gas migration ,at last exploration direction is proposed.
出处
《西南石油学院学报》
CSCD
北大核心
2005年第2期6-9,共4页
Journal of Southwest Petroleum Institute
基金
中国石油天然气集团公司中青年创新基金项目(04E704)。
关键词
吉木萨尔
二叠系
油源
稠油成因
成藏模式
Jimusaer sag
Permain
oil source
oil reserveoir formation mode
exploration direction
