A Mid-Jurassic Carbonate Reservoir Case Study, Offshore Qatar: How to Capture High Permeable Streaks in a 3D Reservoir Model

摘要

Since few publications exist regarding the Middle Jurassic Uwainat carbonate sedimentology in Qatar, this paper con-tributes significantly to the understanding of Uwainat sedimentology and depositional process in Qatar and in the southern area of the Arabian Gulf. This paper also demonstrates how a detailed sequence stratigraphic framework for Uwainat, established for the first time in Maydan Mahzam and Bul Hanine Fields, was integrated with sedimentology, to build proper stratigraphic and facies models. In addition, the results of this study confirmed that a facies based model is an excellent solution for capturing and predicting the high permeable facies/dynamic rock types in their proper time/depth location within a high resolution stratigraphic cycle. Compared to previous work on Uwainat in Maydan Mahzam field, this study allowed a good and promising early history matching of the field performance. In-tegrating various disciplines to analyze data and build a 3D geological model of a heterogeneous carbonate reservoir is key to a proper workflow. The work flow developed for this study could be used to describe other carbonate reser-voirs in the region.