张研,
甘利灯,
杨昊,
晏信飞,
杨廷强
中国石油勘探开发研究院, 北京 100083
基金项目: 国家自然科学基金项目"基于裂缝-孔隙介质建模的储层参数预测和流体识别方法研究"（41774146）和国家重大科技专项"下古生界-前寒武系碳酸盐岩油气成藏规律、关键技术及目标评价"（2016ZX05004003-002）资助
详细信息
作者简介: 孔丽云, 女, 汉族, 1982年生, 山东荣成人, 中国石油勘探开发研究院博士后, 主要从事海相碳酸盐岩储层裂缝-孔隙介质地球物理建模和正演数值模拟方面的研究.E-mail:kly0412@163.com
中图分类号: P631 收稿日期:2017-02-09
修回日期:2018-05-07
上线日期:2018-09-05
Seismic characteristics analysis of fractured multi-porous rocks basing on a twice upscale method
KONG LiYun,ZHANG Yan,
GAN LiDeng,
YANG Hao,
YAN XinFei,
YANG TingQiang
Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
MSC: P631
--> Received Date: 09 February 2017
Revised Date: 07 May 2018
Available Online: 05 September 2018
摘要
摘要:实际地震勘探中，储层物性参数的差异是导致地震波响应特征发生变化的根本原因，而建立储层物性参数与地震响应特征之间的联系，需要跨越微观孔隙尺度、介观测井尺度以及宏观地震尺度等三个不同尺度空间.本文基于已知井的岩石物理实验数据和测井数据，利用复杂多孔隙介质理论将微观尺度孔隙岩石粗化到介观测井尺度，利用Backus平均理论将介观测井尺度的模型进一步粗化到宏观地震尺度，最终，得到地震尺度裂缝-多孔隙介质模型.其数值计算结果与测井数据和地震数据的对比表明：基于两级尺度粗化算法的裂缝多孔隙介质模型在给定参数下是有效的，且基于该模型的地震响应特征分析方法能够对储层的地震响应特征随物性参数的变化进行分析.
关键词: 两级尺度粗化/
多孔隙模型/
Backus等效平均理论/
储层物性参数/
波场响应特征
Abstract:In real seismic exploration, since different physical properties can cause different seismic characteristics, how to build the relationship between these properties and seismic response now becomes one of the most profound problems in seismic geophysicists. There are three different scales, microscopic rock-physical scale, mesoscopic log scale and macroscopic seismic scale, should be taken account in this process, which makes this problem more challenging. In this paper, a method based on twice upscale is proposed to establish a model of macroscopic fractured multi-porous media according to microscopic rock-physical data and mesoscopic log data. Multi-porous theories are used for the first upscale to get a mesoscopic medium from the microscopic rock-physical domain, and Backus average theory is then introduced to upscale this mesoscopic model to the final macroscopic medium, which can be finally used to get the macroscopic seismic equations. The numerical results, comparing with the real log curves and seismic data, show the validity of this new method for given parameters, and then the seismic characteristic analysis can be done according to this new method.
Key words:Twice upscale/
Multi-porous model/
Backus average theory/
Rock physical property/
Seismic characteristics
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http://www.geophy.cn/data/article/export-pdf?id=dqwlxb_14680
