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.
作者
张高成
魏华动
商建立
王雷
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)
出处
《石油地质与工程》
CAS
2020年第2期39-43,共5页
Petroleum Geology and Engineering
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
Tarim basin
tomographic static correction
fracture and cave
depth domain velocity modeling
reverse-time migration
