摘要
尕斯库勒油田是柴达木盆地最大的油田,关于其油源一直存在多种说法。通过密集采样和系统分析,运用获取的大量生物标志物指标,深入剖析了尕斯库勒油田深层和浅层油藏原油的地球化学特征和成因类型。认为两个油藏内部原油特征非常相似,均属于盐湖相低成熟原油;但二者之间存在差异,应该来自于不同的油源。根据油源对比分析,结合烃源灶的研究成果,查明了尕斯库勒油田的油气来源。指出深层原油主要源自茫崖凹陷的E3烃源灶,浅层原油则由茫崖凹陷E3和N1烃源灶混合而成。
Gas Hure oilfield is the largest on in Qaidam basin. There are many opinions about the oil sources in this oilfield. This paper presents its geochemical characteristics and genetic types of crude oil in the deep and shallow reservoirs by abundant biomarker parameters through concentrated sample collection and systematic analysis. It is suggested that the characteristics of crude oil within the two reservoirs are very similar, belonging to typical salt-lake facies and immature crude oil, but differences between them indicate that the oils originate from different oil sources. According to analysis of oil-source correlation and research results of source kitchen, hydrocarbon sources in Gas Hure oilfield are found out. That is, the deep crude oil is from Oligocene source kitchen in Mang＇ai sag and the shallow crude oil is from mixed source kitchens of Oligocene and Miocene in Mang＇ai sag.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2008年第1期22-25,共4页
Xinjiang Petroleum Geology
基金
国家自然科学基金项目,咸化湖盆有机质沉积及其烃源岩与盐类物质的相互作用研究(40572084)
中国石油天然气股份有限公司“十五”项目,柴达木盆地西部油气分布规律及勘探目标选择(KTY-2003-035)联合资助
