陕北油区丰富川油田长_2油层油气成藏规律研究  

Study on hydrocarbon accumulation in Chang-2 reservoir of Fengfuchuan Oilfield in Shanbei oil province

作　　者：金祥纯[1] 

机构地区：[1]南京大学

出　　处：《特种油气藏》2007年第1期45-48,共4页Special Oil & Gas Reservoirs

摘　　要：陕北油区丰富川油田长2油层成藏有利条件及油气成藏规律综合研究表明,该区纵向上生储盖组合匹配利于油气成藏。斜坡东南部长2油藏的有效烃源岩是长7油组的湖相泥页岩,鼻褶带轴部的高角度构造裂缝系统及渗透性强的连通孔喉是油气运移的主要通道空间,燕山运动对陕北斜坡延长组的构造定型起到了决定性作用,形成的低幅度鼻褶带是油气聚集的有利部位,并确定长2油藏的油气运聚模式为阶梯状爬升运移+构造脊聚集型。The conditions of hydrocarbon accumulation in Chang-2 reservoir of Fengfuchuan oilfield,Shanbei oil province,are studied.It shows that vertical configuration of source,reservoir and cap rock favors oil and gas accumulation.The lake facies mudstone is the effective source rock of Chang-2 reservoir on the southeast slope.The high angle structural fracture system and communicating pore throat with higher permeability in the axis of the nose-fold structure is the primary path of oil and gas migration.Yanshan Movement had a fateful effect on the structural forming of Yanchang formation in Shanbei Slope.The low amplitude nose-fold structure is a favorable place of oil and gas accumulation,and the mode of oil and gas migration and accumulation in Chang-2 is deemed as upward-stepping migration + structural ridge accumulation.

关 键 词：油气成藏 低幅度鼻褶带 有效运移通道空间 油气运聚模式 陕北斜坡 

分 类 号：TE122.1[石油与天然气工程—油气勘探]