摘要
常规蚂蚁追踪技术往往应用于叠后地震数据,只能对裂缝进行定性描述。与常规蚂蚁追踪技术相比,基于蚂蚁追踪的叠前裂缝预测技术在保留对裂缝空间展布高精度描述的同时,融入了叠前分方位各向异性信息,从而使裂缝预测由定性描述转为定量化描述。基于蚂蚁追踪的叠前裂缝预测技术能够准确地预测白云岩储层裂缝发育位置及强度,为区带划分和储层精细描述提供依据,通过分析裂缝展布方向与区域水平主应力方向是否一致,可以判断目标区是否具备压裂条件。基于蚂蚁追踪的叠前裂缝预测技术对四川盆地白云岩储层的裂缝预测结果与已知井信息吻合度高,得到的裂缝预测结果可为后续储层改造提供技术支持。
The conventional ant tracking technique is often used in the poststack seismic data,and applies only to the qualitative description of fracture.Prestack fracture prediction technique based on ant tracking can get not only fracture spatial distribution with high precision but also azimuthal anisotropy information,so quantitative fracture prediction can be realized.This prediction approach can predict the position and intensity of fractures in dolomite reservoirs provide the basis for the geological zone division and the reservoir description.By analyzing the consistency of fracture extension direction and the regional horizontal principal stress direction,target zones of fracturing conditions can be determined.The application of this technique in Sichuan Basin for dolomite reservoir match very well with the known well information,and the fracture prediction results provide technical supports for the subsequent reservoir reconstruction.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2014年第6期1199-1203,7,共5页
Oil Geophysical Prospecting
基金
国家科技重大专项(2011ZX05004-003)
中国石油集团公司"十二.五"科技项目(2011A-3603)联合资助
关键词
蚂蚁追踪
叠前方位各向异性
信息融合
裂缝预测
白云岩储层
ant tracking,prestack azimuthal anisotropy,information fusion,fracture prediction,dolomite reservoir
