You must log in to edit PetroWiki. Help with editing

Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. More information

Glossary:Nugget effect

Jump to navigation Jump to search

A feature of the covariance model by which the experimental points that define the model do not appear to intersect at the origin. The nugget model shows constant variance at all ranges, but often is modeled as zero-variance at the control point (well location).