变速成图技术在南堡凹陷南堡4号构造的应用  

Variable-velocity structure mapping for the Structure 4 in Napu Sag

作　　者：郑晓凤[1] 孔祥生[1] 李玉存[1] 左虎[1] 孙明[1] 王冬娜[1] 

机构地区：[1]中国石油冀东油田勘探开发研究院,河北唐山063004

出　　处：《石油地球物理勘探》2017年第A01期55-59,共5页Oil Geophysical Prospecting

基　　金：国家科技重大专项(2016ZX05006-006)资助

摘　　要：针对南堡4号构造中浅层低幅度构造油藏发育、构造复杂、储层横向变化大、井间速度差异大等特点,充分利用GeoEast解释系统中的变速成图特色技术,结合钻井、测井、地质等多种资料,在充分应用叠加速度谱建场的基础上,结合利用井点速度校正和层控方法校正该区平均速度场,精细刻画南堡4号中浅层低幅度构造,有效地降低了构造解释多解性,提高了低幅度构造圈闭识别精度。经实钻验证,取得了良好的地质效果和经济效益。Well-developed, low-relief shallow structural reservoirs in the Structure 4, Napu Sag are characterized by complicated geology, rough lateral changes, and large seismic velocity difference. To overcome these problems, we use variable-velocity structure mapping provided by GeoEast together with drilling, logging and geological data to carry out low-relief structure characterization. The velocity field is built with stacking velocity spectrum,and the average velocity field in the area is corrected by well-controlled velocity and well-controlled horizons. Our approach improves low-relief structure characterization accuracy without multi-solutions. Our reservoir prediction is proved by latter drilling with good geological results and economic benefits.

关 键 词：低幅度构造 变速成图 叠加速度 GeoEast解释系统 

分 类 号：P631[天文地球—地质矿产勘探]