梨树断陷秦家屯-七棵树油田原油饱和烃地球化学特征研究  

Geochemical Characteristics of Saturated Hydrocarbon in Crude Oils from Qinjiatun and Qikeshu Oil-fields in Lishu Fault Depression

作　　者：曾威 张敏 刘海钰[1] 

机构地区：[1]长江大学地球环境与水资源学院,湖北武汉430100

出　　处：《石油天然气学报》2013年第5期23-27,5,共5页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(41272170)

摘　　要：松辽盆地梨树断陷秦家屯-七棵树地区是该盆地中生界油气勘探新区,对该地区原油的地球化学特征进行研究,了解原油的成因,可以为该地区石油勘探和开发提供科学依据。利用相关分析资料;对采集于秦家屯-七棵树油田原油的饱和烃生物标志化合物进行了系统剖析,揭示了其地球化学特征与成因类型。结果表明:梨树断陷秦家屯-七棵树地区存在3种类型的原油:Ⅰ类原油储存于秦家屯油田的泉头组与登娄库组,来源于半咸水湖相沉积环境的源岩;Ⅱ类原油储层于沙河子组,来源于弱还原环境半咸水湖相沉积环境且富含黏土矿物的源岩;而Ⅲ类原油是混源油,是上述两种原油混合的产物。The Qinjiatun and Qikeshu Oilfields were new Mesozoic petroleum exploration target areas in Lishu Fault Depression of Songliao Basin.The geochemistry of crude oils from Qinjiatun and Qikeshu Oilfields was studied and oil genesis was clarified,it would provide a scientific basis for oil exploration and development in the area.The biomarker compounds of saturated hydrocarbon of crude oils from the Qinjiatun and Qikeshu Oilfields were systematically analyzed.The geochemical characteristics and genetic types of oils were revealed.The results show that there exist 3types of crude oils in Qinjiatun and Qikeshu Oilfields,TypeⅠoils are stored in Quantou Formation and Denglou Formation of Qinjiatun Oilfield,and originated from source rocks in semi-salt lake sedimentary environment.TypeⅡoils are stored in Shahezi Formation,and originated from the source rocks in weak reduction and semi-salt lake sedimentary environments with rich content of minerals.TypeⅢ oils are oils mixed with above 2types of oils.

关 键 词：松辽盆地 梨树断陷 秦家屯-七棵树油田 原油 生物标志物 地球化学特征 成因类型 

分 类 号：P618.13[天文地球—矿床学]