姬塬地区长9油层组油气运移规律及模式探讨  

Hydrocarbon migration law and model of Chang 9 reservoir in Jiyuan area,Ordos Basin

作　　者：刘显阳[1,2] 邓秀芹[1,2] 赵彦德[1,2] 张雪峰[1,2] 韩天佑[1,2] 

机构地区：[1]中国石油长庆油田公司勘探开发研究院 [2]低渗透油气田勘探开发国家工程实验室

出　　处：《岩性油气藏》2011年第5期9-15,共7页Lithologic Reservoirs

基　　金：国家科技重大专项"大型油气田及煤层气开发"(编号:2011ZX05044和2011ZX05001)资助

摘　　要：鄂尔多斯盆地姬塬地区长9油层组展示了较好的勘探前景,但对其成藏机制方面的研究却相对薄弱,成为制约勘探的难题。该文应用油藏地球化学、成藏地质学和沉积学等研究手段和方法,探讨了油气来源、运移、运移动力、运聚方式等问题。结果表明:姬塬地区长9油层组原油来源于上部长7油层组的优质烃源岩;长7烃源岩生烃增压产生的异常高压、长7与长9油层组过剩压力差是长7烃类向长9储层运移的主要动力;纵向叠置、横向上连片的砂体和区域性构造活动形成的裂缝为沟通长7优质烃源岩和长9油层组储层的优势运移通道。The research means and methods of reservoir geochemistry,reservoir geology and sedimentology are applied to discuss the hydrocarbon sources,migration mechanism,dynamics and accumulation pattern of Chang 9 reservoir in Jiyuan area.The result shows that the crude oil of Chang 9 reservoir comes primarily from the high-quality hydrocarbon source rocks of Chang 7 reservoir,of which the hydrocarbon migrated downward and accumulated in Chang 9 reservoir.The main dynamic of Chang 7 hydrocarbon migrating to Chang 9 reservoir is mainly from the abnormal high pressure of Chang 7 hydrocarbon source rock hydrocarbon pressurization and excess pressure difference between Chang 7 and Chang 9 reservoir.The vertical superposition and lateral connecting sand bodies and the fractures formed in the regional tectonic activity are the favorable migration path for connecting Chang 7 high-quality hydrocarbon source rocks with Chang 9 reservoir.

关 键 词：运聚成藏 长9油层组 姬塬地区 鄂尔多斯盆地 

分 类 号：TE122.23[石油与天然气工程—油气勘探]