# Spatial assessment of gross vertical reservoir heterogeneity using geostatistics and GIS-based machine-learning classifiers: A case study from the Zubair Formation, Rumaila oil field, southern Iraq

> Research article (Journal of Petroleum Science and Engineering, 2021) · cited 16× · AI/ML

**Wikidata**: [openalex:W3198063421](https://www.wikidata.org/wiki/openalex:W3198063421)  
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