We commend Kupfersberger and Deutsch (1999) for tackling an important and difficult topic in geostatistical modeling in reservoir studies. They cover several important issues, including how the semivariogram reflects sedimentary organization and the relationship between vertical and lateral structure. In this discussion, we would like to add our views and experience regarding these issues by making four points regarding cyclicity.

...

First, the appearance of cyclicity in the semivariogram (e.g., their figure 5) is an important indication that affects the modeling in both the vertical and lateral directions. Repetition of petrophysical properties may suggest a natural length scale in the vertical...

First Page Preview

First page PDF preview
You do not currently have access to this article.