TY - GEN
T1 - Sensitivity-based upscaling for history matching of reservoir models
AU - Mehmood, Saad
AU - Awotunde, Abeeb A.
PY - 2015
Y1 - 2015
N2 - Simulation of reservoir flow processes at the finest scale is computationally expensive. This has made upscaling of reservoir models indispensable in most practical situations. However, upscaling often reduces the accuracy of numerical simulations such that we need to keep a balance between reducing the simulation time and ensuring the accuracy of simulation results. In this work, we present a sensitivity-based upscaling that is applicable during history-matching. This method involves partial homogenization of the reservoir based on the model reduction patterns obtained from analysis of the sensitivity matrix. We adopt a wavelet transformation and reduction of data and model spaces using the 2Dwp-wk approach. The history matching results are and found to be in very close agreement of fine-scale inverse analysis. Thus, the technique speeds up the history matching process without seriously compromising the accuracy of estimates.
AB - Simulation of reservoir flow processes at the finest scale is computationally expensive. This has made upscaling of reservoir models indispensable in most practical situations. However, upscaling often reduces the accuracy of numerical simulations such that we need to keep a balance between reducing the simulation time and ensuring the accuracy of simulation results. In this work, we present a sensitivity-based upscaling that is applicable during history-matching. This method involves partial homogenization of the reservoir based on the model reduction patterns obtained from analysis of the sensitivity matrix. We adopt a wavelet transformation and reduction of data and model spaces using the 2Dwp-wk approach. The history matching results are and found to be in very close agreement of fine-scale inverse analysis. Thus, the technique speeds up the history matching process without seriously compromising the accuracy of estimates.
UR - https://www.scopus.com/pages/publications/84961262483
M3 - Conference contribution
AN - SCOPUS:84961262483
T3 - Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences
SP - 357
EP - 366
BT - Proceedings of IAMG 2015 - 17th Annual Conference of the International Association for Mathematical Geosciences
A2 - Delgado, Raimon Tolosana
A2 - van den Boogaart, K. Gerald
A2 - van den Boogaart, Regina
A2 - Schaeben, Helmut
PB - International Association for Mathematical Geology (IAMG)
ER -