重排藿烷:示踪油藏充注途径的分子标志物  

Rearranged Hopane:Molecular Tracers for Filling Pathway in Oil Reservoirs

作　　者：李威 窦立荣[2,3,4] 文志刚 张光亚[3] 程顶胜 刘爱香[3] 客伟利[3] Li Wei;Dou Lirong;Wen Zhigang;Zhang Guangya;Cheng Dingsheng;Liu Aixiang;Ke Weili(CNOOC Research Institute Co.Ltd.,Beijing 100028,China;College of Resources and Environment,Key Laboratory of Exploration Technology for Oil and Gas Resources,Ministry of Education,Yangtze University,Wuhan 430100,China;Research Institute of Petroleum Exploration and Development,Petrochina,Beijing 100083,China;China National Oil and Gas Exploration and Development Corporation,Beijing 100034,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]长江大学资源与环境学院油气资源与勘探技术教育部重点实验室,湖北武汉430100 [3]中国石油勘探开发研究院,北京100083 [4]中国石油天然气勘探开发公司,北京100034

出　　处：《地球科学》2021年第7期2507-2514,共8页Earth Science

基　　金：国家油气重大专项项目(No.2011ZX05029)。

摘　　要：基于C_(30)重排藿烷(C_(30)DH)和C_(30)藿烷(C_(30)H)热稳定性差异,研究了C_(30)DH/C_(30)H作为油气运移方向和充注途径的可行性.结果发现:C_(30)DH结构稳定性高于C_(30)H,C_(30)DH/C_(30)H参数具有成熟度属性;同时对比分析C_(30)DH/C_(30)H参数与咔唑类参数的相关性,认为两者之间正相关性明显,表明C_(30)DH/C_(30)H参数不仅是良好的热成熟度参数还是良好的石油充注运移参数.M油田位于Fula凹陷东部,M油田原油为弱氧化-还原、淡水-微咸水环境下低等藻类与高等植物混源生成,属于同一族群原油.利用C_(30)DH/C_(30)H参数示踪Fula凹陷M油田石油充注方向,油气运移途径主要为自北向南,同时还发育自西向东的运移途径;咔唑类参数也验证了C_(30)DH/C_(30)H参数示踪油气运移的准确性.结果表明C_(30)DH/C_(30)H参数是示踪石油充注途径的有效参数.Based on the differences in thermal stability of C_(30)diahopane(C_(30)DH)and C_(30)hopane(C_(30)H),this paper studied the feasibility of C_(30)DH/C_(30)H in tracing oil migration orientation and filling pathways.The result shows that the thermal stability of C_(30)DH is considered to be higher than C_(30)H,C_(30)DH/C_(30)H parameters have maturity properties.Meanwhile,contrast C_(30)DH/C_(30)H parameters with carbazoles,found that the C_(30)DH/C_(30)H parameters and carbazoles have great positive correlation.Indicate that the C_(30)DH/C_(30)H parameters not only is a good thermal maturity parameters but also a good in hydrocarbon charging migration.M oilfield is located in the eastern Fula depression.The oils are all normal and the source materials are dual contributions of lower hydrobiont and terrigenous higher plants,the environment is fresh to slight saline water oxidizing to reducing sedimentation,belong to the same group of crude oil.Using C_(30)DH/C_(30)H parameter tracer M oilfield reservoir group of hydrocarbon charging migration direction in Fula depression.The migration path of oil and gas is mainly from north to south,and it also develops from west to east.The classic carbazoles parameter also verified the C_(30)DH/C_(30)H tracer the accuracy of the oil and gas migration.Preliminary results show that C_(30)DH/C_(30)H arameters is an effective parameter for tracer oil filling way.

关 键 词：充注途径 C30DH/C30H 咔唑 M油田 Fula凹陷 石油地质 

分 类 号：P618[天文地球—矿床学]