摘要
致密砂岩储层中气、水的非均匀分布使地震弹性参数与储层参数间的关系变得复杂,导致定量解释多解性增强。针对致密砂岩储层复杂孔隙流体分布特点,改进了随机斑块饱和模型,改进后的模型可以更准确模拟岩石物性、孔隙流体等对地震波弹性参数的影响。基于改进型随机斑块饱和模型形成了多尺度岩石物理模板,经超声尺度、测井尺度和地震尺度地球物理数据标定后,应用于四川致密气层检测,预测的孔隙度、含气饱和度与试气结果较为一致。
The heterogeneous distribution of gas and water in tight-sand,gas reservoirs may cause complex relationships between elastic and reservoir parameters,which results in strong uncertainty in the quantitative seismic interpretation.According to characteristics of complex fluid distribution in tight-sand gas reservoirs,we modify the continuous random patchy-saturation model.This modified model can well investigate the influence of petrophysical properties and pore fluids on wave responses.A multi-scale rock physical template is established based on the modified model,and is calibrated by seismic-,logging-,and ultrasonic-scale data. The multi-scale rock physics template is applied to the tight-gas reservoir prediction in Sichuan Province.The quantitative estimation of rock porosity and gas saturation matoches very well with well gas production tests.
作者
未晛
杨志芳
晏信飞
卢明辉
李晓明
任岩
Wei Xian;Yang Zhifang;Yan Xinfei;Lu Minghui;Li Xiaoming;Ren Yan(Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China.;geiiing Vocational College of Labour and Social Security,Beijing 100083,China)
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2018年第6期1227-1234,I0005,共9页
Oil Geophysical Prospecting
基金
中国石油天然气集团公司"十三.五"项目"深层与非常规物探新方法新技术"(2016A-3301)
国家"973"项目"致密油层地球物理评价"(2014CB239006)联合资助
关键词
岩石物理模型
斑块饱和模型
多尺度岩石物理模板
孔隙度预测
气层识别
rock-physics model
patchy-saturation
model
multi-scale rock-physics template
porosity prediction
gas reservoir identification
