塔里木盆地KDKZ3区块奥陶系成像处理关键技术应用  

Application of key technologies for Ordovician imaging processing in KDKZ3 block of Tarim basin

作　　者：张高成[1] 魏华动[2] 商建立 王雷[1] ZHANG Gaocheng;WEI Huadong;SHANG Jianli;WANG Lei(Exploration&Development Research Institute of Henan Oilfield Company,SINOPEC,Zhengzhou,Henan 450048,China;Exploration&Development Research Institute of Northwest Oilfield Company,SINOPEC,Urumuqi,Xinjiang 830011,China)

机构地区：[1]中国石化河南油田分公司勘探开发研究院,河南郑州450048 [2]中国石化西北油田分公司勘探开发研究院,新疆乌鲁木齐830011

出　　处：《石油地质与工程》2020年第2期39-43,共5页Petroleum Geology and Engineering

摘　　要：塔里木盆地KDKZ3区块主要目的层奥陶系构造复杂、缝洞体及断裂发育,地震资料信噪比低,成像难度大。为提高地震资料的成像精度,通过微测井约束层析静校正技术、基于低频有效信号保护处理技术、奥陶系碳酸盐岩精细成像的高精度深度域速度建模技术、逆时偏移等技术的应用,提高了奥陶系内幕复杂地质构造的成像精度,突出了中下奥陶统-上寒武统碳酸盐岩各类圈闭的反射特征,为进一步落实古生界奥陶系缝洞型储层分布提供了可靠的地震资料。In KDKZ3 block of Tarim basin,the main target strata of Ordovician have complex structure,developed fractures and caves,while the seismic data have low signal-to-noise ratio and there exists much difficulty in imaging.In order to improve the imaging accuracy of seismic data,through the application of micro-logging constrained tomography static correction technology,processing technology based on lowfrequency effective signal protection,high-precision depth domain velocity modeling technology for fine imaging of Ordovician carbonate rocks,reverse-time migration and other technologies,the imaging accuracy of complex geological structures inside the Ordovician was improved,and the reflection characteristics of various traps in middle and lower Ordovician-upper Cambrian carbonate rocks were highlighted,which therefore provides reliable seismic data for the further implementation of the distribution of fracture-cave Ordovician reservoirs in Paleozoic.

关 键 词：塔里木盆地 层析静校正 缝洞 深度域速度建模 逆时偏移 

分 类 号：P631.4[天文地球—地质矿产勘探]