Hybrid Approach to Assisted History Matching Using Streamline Trajectories
A. Singh1, S. Mirzadeh1, M. Maucec1, G. Carvajal1, and S. Knabe1
In the history-matching process, the reservoir engineer adjusts the reservoir model by manipulating reservoir physical properties, such as porosity, permeability, relative permeability, net-to-gross (NTG), skin factors, etc. to match history data (i.e., production data, such as oil, water, gas flow rate, and BHP). For coarse (few hundred thousand cells) reservoir models having few producers, this exercise can be handled on a manual level. However, for large reservoirs having dozens of wells, manual history matching is extremely time consuming, and reservoir engineers often end up with a production match based on unrealistic geological features. The reason is that manual history matching involves a trial-and-error approach based on certain guidelines (Williams, Keating et al. 1998, Ertekin, Abou-Kassem et al. 2001, Fanchi 2006) and the reservoir engineer’s own experience in history-matching production data. To prevent the introduction of unrealistic geological features as model size increases, various assisted history-matching (AHM) techniques have been proposed (Cheng, Kharghoria et al. 2005, Maučec, Cullick et al. 2011, Maučec, Singh et al. 2013).
AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain