New Approaches in ۳D Geomechanical Earth Modeling
Publish place: Journal of Petroleum Geomechanics، Vol: 3، Issue: 1
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IRPGA-3-1_004
تاریخ نمایه سازی: 22 شهریور 1401
Abstract:
In this paper two new approaches for building ۳D Geomechanical Earth Model (GEM) were introduced. The first method is a hybrid of geostatistical estimators, Bayesian inference, Markov chain and Monte Carlo, which is called Model Based Geostatistics (MBG). It has utilized to achieve more accurate geomechanical model and condition the model and parameters of variogram. The second approach is the integration of the models resulted of different estimators for more reliable-robust-accurate estimation, and using Ordered Weighted Averaging (OWA) data fusion. More accurate estimations help to achieve better results with less uncertainty in the stage of data fusion. Ordinary Kriging (OK), Universal Kriging (UK), MBG and OWA were utilized for making ۳D GEM of Unconfined Compression Stress (UCS) in a reservoir of an oil field in Dezful Embayment. The results were shown that the accuracy of MBG was twice of UK, whereas the model obtained of OK was unacceptable. The results of OWA were even ۴۰% better than MBG.
Keywords:
Asmari Reservoir , Geostatistical Estimation with Bayesian Inference , Markov Chain – Monte Carlo , Model Based Geostatistics , Ordered Weighted Averaging , Unconfined Compression Stress
Authors
Behzad Tokhmechi
Associate Professor; Faculty of Mining Eng., Petroleum and Geophysics, Shahrood University of Technology
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