惠州凹陷生烃潜力及油源对比  

Hydrocarbon-generating Potential and Correlation of Oil Sources in Huizhou Oil-enriched Depression

作　　者：史玉玲[1,2] 侯读杰[1,2] 马宁[1,2] 

机构地区：[1]中国地质大学(北京)能源学院 [2]中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室,北京100083

出　　处：《石油天然气学报》2011年第10期15-19,164,共5页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40972097)

摘　　要：为了客观评价珠江口盆地惠州凹陷的生烃潜力,综合运用有机岩石学、岩石热解分析和有机地球化学等方法,依据对凹陷内54口探井的资料,对古近系文昌组的烃源岩有机质丰度、类型和成熟度进行了分析,并进行了油源对比。研究结果表明,文昌组湖相泥岩是惠州凹陷主力烃源岩,而恩平组煤系泥岩对成藏贡献相对较小,文昌组中深湖相的有机质类型优于滨浅湖相;惠东和惠西原油主要来源于文昌组源岩,但惠西原油在不同程度上有煤系泥岩生成的原油的混入,即混有恩平组河沼相的原油,以HZ9-2-1井为典型代表。For the purpose of evaluating the hydrocarbon generation potential in the hydrocarbon enriched depression of Huizhou Depression,on the basis of analyzing the abundance and types of organic matter from 54 wells in Huizhou Depression,the hydrocarbon generation potential of the source rocks was evaluated,oil-source was correlated by means of organic petrology,rock pyrolysis and geochemistry analyses.The results show that the lacustrine facies mudstone of Wenchang Formation is the most important hydrocarbon source rock,while the coal measure mudstone of Enping Formation has less contribution to the reservoir formation in this area,and the organic matter type of the mid-deep lacustrine facies is superior to that of the shallow lacustrine facies in Wenchang Formation.What's more,the oil in the western and the eastern of Huizhou Depression mainly comes from Wenchang Formation,and the oil in the western Huizhou Depression particularly comes from coal-measure source rocks at some extent,which means that it exists the oil in river marsh of Enping Formation,Well HZ9-2-1 is the representative.

关 键 词：原油 烃源岩 生烃潜力 油源对比 惠州凹陷 

分 类 号：P618.13[天文地球—矿床学]