叠前同时反演在灰质发育区识别储层及流体的应用研究

发布时间：2018-03-04 00:29

本文选题：叠前同时反演　切入点：岩石物理分析　出处：《地球物理学进展》2017年01期 　论文类型：期刊论文

【摘要】：东营凹陷的前期研究成果表明,该区储层存在着厚度薄、变化大且灰质含量高的特点,仅从常规地震剖面上,砂体与灰质泥岩的地震反射特征难以区分,给预测有效砂体及流体造成了严重影响,且叠后波阻抗反演无法识别灰质发育区的有效储层.针对以上问题,对测井资料进行了岩石物理参数敏感性分析,明确了灰质发育区浊积岩有效储层岩石物理特征,即横波阻抗可区分高阻储层与非储层,纵波阻抗可剔除高阻储层中的灰质,在前两参数优选出的有效储层基础上,纵横波速度比可区分流体类型.实际工区叠前同时反演结果与岩石物理分析及完钻开发结果吻合较好,说明利用叠前同时反演方法能有效剔除灰质对浊积岩有效储层预测的影响,亦能识别有效储层中的流体类型.
[Abstract]:The previous research results of Dongying sag shows that the reservoirs in this area are large and thin, the changing characteristics of gray matter content high, only from the seismic profile, the seismic reflection characteristics of sand and lime mudstone are difficult to distinguish, caused a serious impact on the effective prediction of sand body and fluid, and post stack impedance inversion can not identification of effective reservoir zones. Gray matter in view of the above problems, the logging data of the sensitivity analysis of petrophysical parameters, the gray zones turbidite effective reservoir petrophysical characteristics, namely shear wave impedance can distinguish high resistivity reservoir and non reservoir, the acoustic impedance can be eliminated with high resistivity reservoir in gray matter in the effective reservoir, the basis of the first two optimal parameters on the shear wave velocity ratio between fluid types. The actual area of pre stack inversion results and analysis of rock physics and drilled the development results, illustrate the use of pre stack with The time inversion method can effectively eliminate the effect of gray matter on the prediction of effective reservoir of turbidite, and can also identify the type of fluid in the effective reservoir.

【作者单位】：长江大学油气资源与勘探技术教育部重点实验室;长江大学地球物理与石油资源学院;中国石化胜利油田分公司物探研究院;
【基金】：中国石油科技创新基金项目(2015D-5006-0301)资助
【分类号】：P631.4;P618.13

【相似文献】