Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

The dynamic data containing important information about inter-well permeability distribution should be utilized in reservoir characterization by being integrated with static data such as core and seismic data. The sequential self-calibration(SSC) inversion method is an iterative optimization method based on geostatistics. The unique aspects of the SSC method are master point concept to reduce the amount of computation and multiple realizations of permeability fields honoring different types of static and dynamic data. We developed the SSC inversion model that uses finite difference method as a forward model and the results of application to reservoir systems with simple and complex permeability distributions were presented respectively. In sensitivity study of the inverted fields to the initial permeability fields and different variogram parameters, the characteristics of reservoir was always retrieved. In case of using the multiple realizations from conditional simulation as initial permeability fields, the inverted fields were identically converged to the reference field.