带趋势序贯指示模拟方法在东濮凹陷薄砂岩储层预测中的应用  

Application of sequential indicator simulation with a trend to predict thin-bedded sandstone reservoir in Dongpu sag.

作　　者：雷利安[1] 徐美茹 曹学良[1] 芦淑萍 

机构地区：[1]中国地质大学 [2]中国石油杭州地质研究所

出　　处：《石油地球物理勘探》2005年第1期92-96,共5页Oil Geophysical Prospecting

摘　　要：带趋势序贯指示模拟方法是一种基于地质统计学的随机模拟方法,其基础工作是三维地震资料精细解释和测井资料的标准化处理。实现此方法的主要步骤中,除了井约束波阻抗反演的子波提取、层位精细标定、地质框架模型建立、波阻抗反演约束参数选取以外,还有单井岩性曲线的形成、趋势模型建立、储层参数空间分布规律和空间相关性分析,以及储层参数模型的可靠性评价与优选等。与井约束波阻抗反演相比,该方法不仅使纵向分辨率明显提高,能精细地刻画储层特征,而且可对储层参数空间分布的非均质性和不确定性进行定量评价。对东濮凹陷QB块的应用表明,该方法查清了该区有利的含油气砂体分布范围及厚度的空间变化规律。The modeling method of sequential indicator simulation with a trend is a stochastic simulation method based on geological statistics, its basic works are 3D fine seismic data interpretation and standardized processing of logging data. The key steps of implementing the method include forming lithological curves for a single well,building trend model, analyzing distribution rule of reservoir parameters in space and spatial correlation and assessing reliability of reservoir parameters model as well as optimizing it besides the following methods:detection of wavelet by logging-constrained wave impedance inversion,fine labeling of the formation , building geological framework model and selecting the constrained parameters of wave impedance inversion etc. In comparison with the logging-constrained wave impedance inversion, the method is characterized by not only greatly improving the vertical resolution and fine description of reservoir characters, but also the qualitative assessment of the non-homogeneity and uncertainty of spatial distribution of reservoir parameters. The practical use of the method in QB block of Dongpu sag showed that the method clarified favorable distribution region of oil/gas-bearing sandstone and spatially changing low of its thickness.

关 键 词：波阻抗反演 储层参数 东濮凹陷 序贯指示模拟 砂体分布 三维地震资料 空间分布规律 砂岩储层 单井 非均质性 

分 类 号：TE122[石油与天然气工程—油气勘探] P631[天文地球—地质矿产勘探]