叠前弹性参数反演技术在生物礁储层气水识别中的应用  

Application of the pre-stack elastic parameter inversion in the identification of the gas-water in biohermal reservoir

作　　者：朱珍君 王立华 程哲远[2] 李琦[2] 

机构地区：[1]恒泰艾普石油天然气技术服务股份有限公司,北京100094 [2]中国地质大学(北京),北京100083

出　　处：《油气地球物理》2015年第4期32-37,共6页Petroleum Geophysics

摘　　要：叠前弹性参数反演基于弹性阻抗反演理论,根据地震资料与测井约束反演弹性阻抗数据体直接求得泊松比等弹性参数,其优势表现为没有中间转换过程,参加计算参数较少,物理意义清楚,气水识别能力较强。将该方法应用于四川某地区生物礁储层,经多种气水识别方法试验比较,由于传统AVO和叠后方面的属性分析等与井资料吻合度不高,最终优选出在本区识别含气生物礁最为有效的叠前弹性参数泊松比反演法。后期新钻井结果与预测吻合,表明该方法在生物礁储层气水识别方面较为有效,对其他地区的类似储层气水识别具有借鉴意义。Based on the theory of elastic impedance inversion and according to the seismic data and log-constrained inversion elastic impedance volume, the elastic parameters such as Poisson ratio and so on are achieved directly by the pre-stack elastic parameter inversion without conversion process. The advantages of this method are the simple calculation, clear physical significance and higher capability of gas- water identification. After compared of the method with others used in the tests of the gas- water identification in the biohermal reservoir in Sichuan, the prestack elastic parameter Poisson ratio inversion, the most effective for the biohermal reservoir in the area, is optimized as the results from the conventional AVO and post- stack analysis are not matched with the well data very well. The result predicted by the method is in good agreement with the later actual drilling data. Therefore, this method which is the most effective identification of the gas-water has certain reference meaning for the similar biohermal reservoir for other areas.

关 键 词：叠前弹性参数反演 泊松比 生物礁储层 气水识别 

分 类 号：TE371[石油与天然气工程—油气田开发工程]