周庄油田隐蔽油藏的上倾超覆边界位置分析  

Analysis of Updip Overlap Boundary of Subtle Oil Reservoir in Zhouzhuang Oilfield

作　　者：罗洪飞[1] 刘健[1] 杨浩[1] 

机构地区：[1]中石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《石油天然气学报》2011年第10期84-88,167,共5页Journal of Oil and Gas Technology

摘　　要：高邮凹陷周庄油田渐新统戴一段2砂组(E2d21)隐蔽油藏边界存在不确定问题。通过对钻井和测井资料的综合研究,分析目标地层上倾方向的厚度变化趋势,预测目标地层与下覆地层不整合超覆的边界点,进而落实油藏上倾超覆边界;利用测井约束地震反演法将大面积连续分布的地震资料与具有高分辨率的井点测井资料进行匹配、转换和结合,预测E2d21的9号油砂体的展布及厚度变化情况,从而分析确定油藏上倾超覆边界。研究结果表明,两种方法预测的周庄油田隐蔽油藏上倾超覆边界基本符合。The border of subtle oil reservoir of Oligocene 1st Middle member(E2d21) of Dainan Formation was uncertained in Zhouzhuang Oilfield of Gaoyou Depression.By comprehensive study of drilling and logging data,the thickness changes in the updip direction of target zone were analyzed,the point of the boundary that the target zone was unconfirmed with underlapped layers was predicted.The updip overlap boundary of subtle oil reservoir was defined by those points.The logging constrained seismic inversion was used to match,changeover and connect the seismic data of long-range and continuous with high resolution logging data to predict the distribution、thickness changes of E2d21 No.9 Sandbody and determine the updip overlap boundary of subtle oil reservoir.The result shows that the result of updip overlap boundary of subtle oil reservoir predicted by two methods is basically consistent.

关 键 词：地震反演 周庄油田 隐蔽油藏 E2d21-9砂体 超覆边界 

分 类 号：P618.13[天文地球—矿床学]