... Abstract An integrated workflow was developed to support the waterflood design of an onshore field in Brazil. This giant mature field has more than 2000 drilled wells with a long production history that has been declining. The objective of the study was then to improve the recovery factor...

... history matching space cut reservoir model history uncertainty analysis evaluation objective function vernon scenario artificial intelligence model output emulator input space upstream oil & gas uncertainty reduction emulation water rate selection informative output...

.... In this work, we propose a CLFD procedure and demonstrate its feasibility in the UNISIM-I benchmark case, based on the Namorado Field of the Brazilian Campos Basin. The CLFD cyclically uses the steps of history matching, selection of representative models and optimization of the DP in an ensemble of uncertain...

... of coefficients. Because the data mismatch is highly reduced by the initial optimizations at large scales, the perturbation of the fine scale coefficients is minimized resulting in a better preservation of the prior models and a reduced level of noise in the final models. For comparisons, a second history...

... these models can subsequently be used to obtain optimal recovery strategies, and discuss how this approach can be extended to optimization under uncertainty. The history matching step is performed using an ensemble-based methodology and an efficient parameterization of the time-lapse seismic data...

... materials Figure 1 Cross-section and wire coordinate system 4 OTC 24328 Stresses in tensile armour of flexible risers The basis for calculating the tensile wire total stress time histories is time histories of tension and curvature in two dimensions. Angle time histories are translated to curvature using...