TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractThe Dalan/Kangan (Khuff) Formation is a major reservoir in Iran and the rest of the Middle East Gulf region, and contains some of the world's biggest gas reserves. The reservoir facies of this formation developed on a very large regional carbonate platform which had a very low topographic relief. This large geographic extent of the platform system is responsible for the development of very extensive facies tracts -in order to encounter major facies changes, large areas need to be investigated. This is often not possible in detailed reservoirscale studies. In such cases, integrated models that extend from proximal positions to more oceanward locations are difficult to apply.

, Mathieu Rousseau (Total), Carine Maza (Total), Alain Roumagnac (Total), Solange Cantaloube (Total) and Eric Zuckmeyer (Total) Preparation of robust reservoir model for the Arab Formation relies on a thorough characterization of the different carbonate facies from core and thin-section examination. However, the key step remains to properly extrapolate the detailed facies recognition in cored wells to uncored wells. The objective of this presentation is to illustrate how electrofacies have been successfully first calibrated on a few cored wells and then extrapolated to all uncored wells in five hydrocarbon fields in the United Arab Emirates (UAE) and two in Qatar.