三维叠前时间偏移技术在江苏WZD地区的应用  

The application of 3-D prestack time migration in WZD area

作　　者：武桂荣[1] 邹成娟[1] 徐敏[2] 刘迎贵 高韧[1] 

机构地区：[1]中石化江苏油田物探技术研究院,江苏南京210046 [2]四川石油管理局物探研究中心,四川成都610213 [3]中海石油研究中心,北京100016

出　　处：《资源调查与环境》2006年第3期217-222,共6页Resources Survey & Environment

摘　　要：当地下地质构造复杂、断裂发育,横向速度变化不是太剧烈的情况下,提高偏移成像精度,三维叠前时间偏移是一种行之有效的方法。三维叠前时间偏移取得成功的关键:一是高保真、高信噪比的叠前数据;二是建立一个合理的三维偏移速度场。随着计算机性能的不断提高,三维叠前时间偏移逐渐成为常规处理技术,该技术在江苏油田WZD地区得到了广泛的应用,实际资料处理结果及钻探效果证实了三维叠前时间偏移技术是解决WZD地区复杂构造成像精度的一种好方法。While the geologic structure complexity, rupture growth and transverse velocity variety underground are not too exquisite ,3-D prestack time migration is an effective method to improve migration imaging precision. There are two key factors for 3-D prestack time migration：one is the high fidelity high SNR prestack data;the other is to build up a reasonable 3-D velocity field for migration. With the advanced computer capability ,3-D prestack time migration gradually becomes a general seismic data processing technology. In the WZD area in Jiangsu oil field, this technology has been applied widely. Practical seismic data processing and drilling results have proved that 3-D prestack time migration technology is a good method to resolve complicated structure imaging precision in the WZD area,

关 键 词：三维叠前时间偏移 三维偏移速度模型 偏移孔径 信噪比 反假频间距 

分 类 号：P618.1[天文地球—矿床学] P631.4[天文地球—地质学]