分频道积分技术在苏59气田储层预测中的应用  

Application of Frequency-shared Trace Integration Technique to Reservoir Prediction in Su59 Gas Field

作　　者：曹军 王林飞[1,2] 葛学胜 程少杰 Cao Jun;Wang Linfei;Ge Xuesheng;Cheng Shaojie(Engineering Geophysical Research Laboratory, Ocean University of China, Qingdao Shandong 266100,China;Evaluation and Detection Technology Laboratory of Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology, Ocean University of China, Qingdao Shandong 266100, China)

机构地区：[1]中国海洋大学海底科学与探测技术教育部重点实验室,山东青岛266100 [2]中国海洋大学青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266100

出　　处：《工程地球物理学报》2020年第2期154-159,共6页Chinese Journal of Engineering Geophysics

基　　金：国家重点研发项目(编号:2017YFC0307401);国家自然科学基金(编号:41204087)。

摘　　要：目前,随着我国油气田勘探程度的增加,勘探目标已逐渐转向地层、岩性等复杂油气藏。本文针对苏59地区储层砂体横向变化快、纵向分布不均匀的特点,利用地震波通过含气层时高频能量发生明显衰减、地震道积分剖面出现异常高值、部分地震属性出现异常响应等现象,对地震资料进行了道积分处理,并对道积分剖面进行了时频分析,获得了各单频道积分剖面。通过对比单频道积分剖面,初步预测了储层中可能存在的“甜点”,并提取振幅总能量、均方根振幅、绝对振幅和、弧形长度等地震属性,通过这些地震属性的异常响应,结合钻井和其他资料进行了验证,取得了良好的效果,成功预测出了剖面上存在的“甜点”。The latest exploration has gradually shifted to complex oil and gas reservoirs such as strata and lithology reservoirs with the development of oil-gas field exploration in China.In Su59 gas field,sand bodies change quickly in lateral direction and distribute irregularly in vertical direction.When seismic wave pass through gas-bearing sand,the reflection amplitude with high frequency would obviously attenuate,abnormal high amplitude would appear in the trace integrated section,and some seismic attributes would respond abnormally.Based on these features,this paper carries on seismic data processing with trace integration technology and time-frequency analysis on the profile of trace integration,which obtains the trace integrated section with single-frequency.What's more,several seismic features as total amplitude energy,RMS amplitude,integrated absolute amplitude and average vibration path length have been obtained on the basis of trace integrated section with single-frequency.Lastly,those seismic features have been verified with seismic data through their anomalous responses,which achieves better effects and successfully predicts‘sweet spot’on the profile.

关 键 词：道积分 时频分析 地震属性 甜点 

分 类 号：P631.4[天文地球—地质矿产勘探]