多子波分解与重构技术在阿尔及利亚TKT—NGS油田储层描述中的应用

英文篇名：Application of multi-wavelet decomposition and reconstruction technique in reservoir characterization in TKT-NGS Oilfield,Algeria
中文刊名：石油地球物理勘探
英文刊名：Oil Geophysical Prospecting
作者：代双和 ; 陈志刚 ; 于京波 ; 谢结来 ; 毛凤军 ; 韦添昌 ; 李永保
英文作者：Dai Shuang-he1 ; Chen Zhi-gang2 ; Yu Jing-bo2 ; Xie Jie-lai2 ; Mao Feng-jun3 ; Wei Tian-chang4 and Li Yong-bao51.School of Earth and Space Sciences ; Peking University ; Beijing City ; 100871 ; China2.Geology Research Centre of Geophysical Research Institute ; BGP Inc.of CNPC ; Zhuozhou City ; Hebei Province ; 072751 ; China3.Research Institute of Petroleum Exploration and Development of Petrochina ; Beijing City ; 100083 ; China4.Research institute of Yunnan Geophysical Exploration Company ; Southwest Petroleum Bureau ; Kunming City ; Yunnan Province ; 650233 ; China5.Research Institute of Geology Exploration and Development ; Chuanqing Drilling Engineering Ltd. ; Chengdu City.Sichuan Province ; 610051 ; China
中文关键词：多子波分解与重构 ; 储层描述 ; 非均质性 ; 地震反演
英文关键词：multi-wavelet decomposition and reconstruction ; reservoir ; heterogeneity ; seismic inversion
出版日期：2011-02-15
机构：北京大学地球与空间科学学院;东方地球物理公司研究院地质研究中心;中国石油勘探开发研究院;西南石油局云南物探公司科研所;川庆钻探工程有限公司地质勘探开发研究院;
年：2011
期：01
出版单位：石油地球物理勘探

摘要

位于阿尔及利亚OUED MYA盆地东北部TKT—NGS区的油田为构造—岩性油气藏,主要目的层Si油层为辫状河沉积,砂体厚度薄、横向非均质性强。本文针对该区的地质结构特点,应用多子波分解与重构技术描述了该区油层分布,预测了油藏的含油范围。总结出应用多子波分解与重构技术进行油层解释的步骤为:①对地震数据进行多子波地震道分解;②筛选合成更有利于直接油层解释的新的地震道集;③计算地震波频率衰减系数道集;④提取地震分量,并根据钻井获得的油层资料,筛选出对直接油层解释更有效的地震分量。应用结果表明,该技术用于油层解释的效果较好。
The oilfield in TKT-NGS area of northeast OUED MYA basin in Algeria is a structure-lithology reservoir and the main target zone Si is featured a braided river deposition with thin sand layer and strong lateral heterogeneity.Faced with the characteristic of geology and structure in this area,the multi-wavelet decomposition and reconstruction technique was applied to describe the distribution of reservoirs and predict the oil-bearing range of reservoir.The interpretation steps by the technique were summarized below:(1) conducting multi-wavelet seismic trace decomposition for the seismic data,(2) screening and synthesizing the new seismic data which is more favorable for direct reservoir interpretation,(3) calculating seismic wave frequency attenuation coefficient gathers and(4) extracting the seismic components and screening the new component that is more effective for the direct reservoir interpretation in accordance with the reservoir data obtained from the drilling.The application result showed the better effectiveness of the technique in reservoir interpretation.

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