通过岩石物理模拟改进北黄海盆地中生界致密砂岩储层的地震刻画  

Improving seismic reservoir characterization of the tight sand reservoir by rock physics modeling in the north Yellow sea basin

作　　者：马君霞 卓胜广[2] 张玉金 胡国泽[2] 

机构地区：[1]北京三纪兰德石油科技有限公司,北京100107 [2]东北大学秦皇岛分校,秦皇岛066004

出　　处：《地球物理学进展》2016年第6期2609-2617,共9页Progress in Geophysics

基　　金：编辑部的大力支持

摘　　要：北黄海地区多年来受困于储层预测精度欠佳,分析实测纵波、横波和密度曲线不能很好的反映储层岩性和物性.本次研究通过采用岩石物理模拟方法,以Xu & White模型和岩心分析数据为基础,模拟出实际地层条件下的弹性测井响应,并以此分析研究储层岩性、物性、含油气性对弹性参数的影响,结合对井眼环境和泥浆侵入对弹性测井曲线的影响进行校正,获得了高质量的弹性测井曲线,在此基础上运用实际测量的纵波阻抗曲线和岩石物理模拟的纵横波速度比曲线,建立了储层和有利储层的弹性解释框架,指导地震叠前反演结果的量化解释,与已知钻井结果对比解释精度较高.参考本次储层的预测结果部署了新的钻井,后钻井实钻结果在储层、有利储层方面都与预测结果保持一致,说明了岩石物理方法对改进的储层解释模板的重要性.For years,seismic reservoir characterization has low prediction precision in the North Yellow Sea Basin. The measured elastic logs（ compressional velocity,shear velocity,and density） in the drilled can not be used to establish the seismic interpretation framework. By using rock physics modeling,the elastic logs are modeled by using the XuWhite model based on the core data,the relationship between the elastic and reservoir property is studied in this tight sandstone reservoir, and environment and invasion correction of the wireline logs are carried out. and the measured Pimpedance and modeled Vp / Vs are used to establish the interpretation framework of pre-stack inversion and reservoir characterization. The successful reservoir characterization based on the established interpretation framework was proven by drilling a new well in the studied area.

关 键 词：岩石物理模拟 弹性参数 北黄海盆地 

分 类 号：P631[天文地球—地质矿产勘探]