Summary Fractured carbonate reservoirs constitute significant challenges in quantitative seismic reservoir characterization. The purpose of our study was twofold: 1) To investigate whether seismic attribute calibration could be used to develop and support the detailed 3D geologic modeling of the Kra Al-Maru discovery in Western Kuwait, and 2) To verify the applicability of ExxonMobil’s proprietary seismic attribute technology and integration process in predicting the most economically relevant reservoir property: its producibility. We illustrate the key elements with the aid of a case study on the Jurassic-age Najmah and Sargelu Formations, an unconventional, naturally fractured, carbonate reservoir. The Minagish field was used as a producing analog of the Kra Al-Maru field. We used seismic forward modeling and well control from the Minagish, the Umm Gudair, and Kra Al-Maru fields to validate the results.