Reservoir description using production data

This study presents two approaches of using production data for reservoir characterization. The first part introduces a methodology to effectively use the production data to improve the performance of the existing water flood. Using simple statistical procedures and method of superposition (e.g., one producing well could be affected by several injection wells), the injection wells which are affecting the production of oil and water from individual producing wells are determined. The connection or the lack of connection between injection and producing wells based on the previous step can be utilized in optimizing water flood process and in modeling the reservoir. The method is tested in a synthetic water flood field as well as in mature water floods.; The second part presents a method to integrate dynamics data (pressure and rate information) into three-dimensional, three-phase flow reservoir models. The method is an extension of dual loop approach introduced earlier for single-phase flow by Chu et al. and later extended to water/oil flow by Ates and Kelkar. The sensitivity coefficient equations, appropriate for three-dimensional, three-phase flow are developed.; The equations are validated by comparing the results to the ones of direct perturbation approach. The dual loop approach is reformulated to properly account for three-phase flow. The method is then validated using several synthetic cases.