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, Maitham Ebrahim (Kuwait Oil Company) and Shaikha Al-Ghareeb (Kuwait Oil Company) The Permian-Triassic Khuff Formation is an extensive gas reservoir in the Arabian Gulf area. The formation houses the world's largest gas accumulation: the combined North Field (Qatar) and South Pars (Iran) dome, contain approximately 1,500 TCF of gas (Halbouty, 2003). The formation was deposited during a regional transgression over a stable shelf of very low relief, which had minor clastic supply on the margin of Arabian Peninsula. The porosity and permeability of the Khuff carbonate reservoirs are generally very low in the entire Middle East. Ehrenberg (2007) showed that porosity in the Middle East varies from 2-14%, where the depth of reservoir varies from 2-5.5 km. To explore the Khuff reservoir prospectivity, post-stack seismic inversion and porosity modeling was carried out using recently acquired 3-D Q-Land seismic data. The study area consists of two major fields, Minagish and Umm Gudair, which are located over major structural highs. In the southwestern part of the Kuwait only one well was drilled to the Khuff-C reservoir over the structural high of West Umm Gudair Field. Here the Khuff-C reservoir occurs at greater depth and is around 350 feet thick. The observed porosity of the unit is around 2.0%. The testing of the unit could not be carried due to mechanical problem.

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