Gabor变换与三原色融合技术在碳酸盐岩缝洞储层识别中的应用  

Application of Gabor transform and RGB tricolor in reservoir prediction of fracture-cavity carbonate reservoir

作　　者：郑连弟[1] 袁联生[1] 杨强[1] 杨江峰[1] 马永强[1] 张薇[1] 

机构地区：[1]中国石化石油物探技术研究院,南京211103

出　　处：《物探化探计算技术》2016年第5期631-636,共6页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国石油化工股份有限责任公司项目(P 14124;P 14061)

摘　　要：针对塔河油外围地区小尺度缝洞型储层和古河道精细识别的难题,基于叠前逆时偏移(RTM)成像数据体,利用Gabor变换进行地震数据体频谱分解,优选针对不同尺度的河道和缝洞储集体敏感频带的数据体,采用RGB三原色融合技术将优选后的低、中、高频带数据体进行融合,形成RGB混频数据体。与常规地震数据体对比,混频数据体对不同尺度缝洞型储集体的刻画更加清晰、对古河道细节识别更加精细,有效提高了研究区碳酸盐岩缝洞型储层预测的精度。Fine recognition of small scale fracture-cavity carbonate reservoir and ancient river channel in Tahe oilfield has always been a problem.The combination of Gabor transform and RGB tricolor fusion technique is proved to solve this problem effectively.Gabor transform realizes spectral decomposition on pre-stack reverse time migration（RTM）imaging data.The sensitive band data to highlight the different scale of fracture-cavity carbonate reservoir and channel were analyzed.Then RGB tricolor fusion technique integrate low,medium and high frequency bands and RGB mixing data was formed.Compared to the conventional seismic data,better results were obtained in RGB mixing data.The description of different scale fracture-cavity reservoir and ancient river channel are more finer,which effectively improved the prediction accuracy of carbonate reservoir in study area.

关 键 词：GABOR变换 RGB三原色 碳酸盐岩 储层预测 

分 类 号：P631.4[天文地球—地质矿产勘探]