用分辨率匹配技术提高测井曲线垂直分辨率

Improving the vertical resolution of log data by resolution match method.

在薄互层油藏测井数据处理和解释中,为获得较准确的储层参数,需要解决提高分辨率以及不同垂直分辨率测井曲线之间相互匹配的问题。本文给出了一种通过分辨率匹配提高分辨率的计算方法。高分辨率测井曲线降低分辨率使之与低分辨率测井曲线相匹配,可通过匹配线性滤波器很容易实现;而低分辨率测井曲线提高分辨率使之与高分辨率测井曲线相匹配,则不能采用简单的线性滤波方法。本文采用线性滤波和非线性回归相结合的匹配技术可以很好地解决这个问题。此适用于多种测井曲线,如侧向测井、感应测井、中子测井、密度测井和自然电位测井等曲线。

In order to obtain accurate reservoir parameters in processing and interpreting log data from thin interbedded reservoir,we need to improve the resolution and match different log curves having different vertical resolutions.A method for im- proving the resolution by resolution match is recommended here.Lowering fhe reso- lution of a high-resolution curve to make it matchable to a low-resolution log curve can be easy achieved by using matched linear filter;however,simple linear filtering can not be used to raise the resolution of a low-resolution log curve to make it har- monize with a high-resolution log curve.The joint use of linear filtering and nonlin- ear regression can solve this problem successfully.This method is applicable to vari- ous log curves,such as laterolog,induction electrolog,neutron log,density log and self potential log curves.