摘要
叠前弹性阻抗反演是建立在非零偏移距的基础上,利用纵波速度、横波速度、密度进行的一种信息量丰富、分辨率高、计算速度快的反演方法。针对苏里格地区盒8气层多解性特点应用了弹性阻抗反演的方法,为了对气水界面进行区分达到更好效果,对不同入射角度的选取也至关重要。首先利用测井及岩石物理性质进行相关性分析求取了最佳的弹性阻抗角度,并在此基础上对求取最佳角度进行弹性反演。结果表明通过弹性阻抗反演可以提高储层识别能力,同时对苏里格地区气藏的勘探开发也起到了重要的作用。
The prestack elastic impedence inversion is a method of inversion established on the basis of nonzero offset and,which is an inversion method with abundant information,high resolution and fast calculation speed by utilizing pwave velocity,s-wave velocity and density.This method was applied in He-8 of Sulige area because of its characteristic of ambiguity.So it is of great important to select different incidence angles so as to better distinguish the gas-water contact.Correlation analysis was firstly carried out by using well logging and petrophysical property to solve for the best angle of the elastic impedance,and on this basis to obtain the best angle in the elastic inversion.The result shows that the elastic impedance can not only improve the reservoir indentification but also play a great role in exploratory development of subtle oil-gas reservoirs in Sulige area.
出处
《石油地质与工程》
CAS
2011年第1期44-47,143,共4页
Petroleum Geology and Engineering
关键词
弹性阻抗反演
苏里格地区
角度
测井
岩石物理性质
Elastic impedence inversion
Sulige area
angle
well logging
petrophysical property
