密井网条件下井震联合低级序断层识别方法  

Joint well-seismic interpretation of low-grade faults in dense well pattern block

作　　者：张昕[1] 甘利灯[1] 刘文岭[1] 姜岩[2] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《石油地球物理勘探》2012年第3期462-468,358+518,共7页Oil Geophysical Prospecting

基　　金：国家科技重大专项"大型油气田及煤层气开发"(2008ZX05010-002)资助

摘　　要：低级序断层是影响剩余油聚集和注采关系的主要地质控制因素之一,油田开发后期对准确描述低级序断层的位置和走向提出了更高的精度要求。本文基于叠后地震资料,通过地震数据高频响应增强处理及蚂蚁体地震属性的提取,采取井点钻、测井、井间地震资料的联合解释方式,对工区断距2m以上的低级序断层进行了识别和描述,并得到开发动态数据的验证。由此认识到:充分利用并挖掘井-震联合勘探的潜力,能有效提高开发阶段小尺度地质体的描述精度,并为油藏描述提供更准确的地质模型。As low-grade faults have great influence on remaining oil distribution and injection-production relation,an accurate distribution of these minor faults is one of considerable interests in mature field development.After poststack seismic data are processed by high frequency enhancement and seismic attribute are obtained from ant tracking,we use a joint well-seismic interpretation to characterize low-grade faults with above 2-meter fault throw in the working area.This low-grade fault interpretation has been proven by well production information.Our study demonstrates that this joint well-seismic interpretation has great potential to improve the minor geologic body delineation for the mature field development stage.

关 键 词：井- 震联合解释 断层描述 低级序断层 地震属性 小波变换 图像反褶积 蚂蚁追踪 

分 类 号：P631[天文地球—地质矿产勘探]