... ML algorithms such as tree-based and neural networks were trained to estimate these petrophysical properties of carbonate rocks. The obtained results from ML algorithms were further compared with core measurements to ensure their accuracy. The results showed that the use of T 2 spectrum as an input...

... control artificial intelligence reservoir characterization algorithm forecast accuracy precision unconventional reservoir well upstream oil & gas reservoir surveillance machine learning train test split presented pair-plot equation viscosity arp equation completion deriving new type...

... study coupling simulation evolution boundary hydraulic fracturing reservoir characterization permeability horizontal well production performance accuracy Introduction China is rich in tight oil and has enormous development potential. Junggar Basin is the main production base of tight oil...

... and handled with ultimate care. In this paper we investigate two main aspects of such uncertainties and showcase some recommendations to enhance the accuracy of the measurement for improved reservoir saturation monitoring. Two fundamental factors affecting C/O measurement are the type of gamma ray (GR...

... the accuracy, stability, and robustness of the existing numerical tools even in case of extreme oil field environment with significant uncertainties. Current Virtual Meter algorithms are based on fluid dynamic simulators which calculate the pressure drops through wellbore, choke, and flowlines; the algorithm...

.... Moreover, the phase diagram of sour crude oil obtained by the ANN model was close to the phase diagram generated by VLE, which proves the accuracy and robustness of the ANN model. Overall, this work shows that ANN model is effective in accelerating flash calculation and reducing the computational time...

... resistivity measurements always show "horns" near the bed boundaries where the resistivity contrastsare high. These "horns" can also decrease the inversion accuracy. In this paper, we propose a new robust nonlinear inversion algorithm that uses Huber criterion as a solution for handling the measured data...

... yields a higher-order solution for better accuracy, but also significantly reduces the iteration number and computation time, especially for the cases with low truncation error requirement. The error tolerance of displacement is critical on when the step size will be adapted. Small error tolerance can...

... where Δ P = P Nx - P sln ; P sln is the true solution of pressure and Δ P D = P res - P heel . The results verify the higher accuracy of the new method when compared to the standard method for pressure near the heel. The accuracy for pressure increases from the toe to the heel...

... permeability accuracy history match quality geological model artificial intelligence discrepancy inverse modeling practical approach high permeability zone simulation model Well Test spe 165936 society of petroleum engineers saudi arabia government permeability function tariq al-zahrani...

... mesh refinement scheme, that allows the achievement of an optimal accuracy by using dynamic mesh adaptation. The mesh refinement is close to the high error of temperature field. Periodic adaptive refinement is performed such as the refined zones describe accurately the temperature front displacement...

...). – In case of abnormal predictive trend, consider the following remedial action: Review field measured data for accuracy, screen data as justified. Review imposed model constraints at well, group and field levels. Investigate solution with iterative process including static and dynamic models based...

.... The accuracy of the data is better than 5%, sufficient for validation purposes. We summarize the conditions under which the simple power law provides reasonable estimates of viscosity, identify the ranges of pressure and temperature and composition for which large deviations can be expected, and discuss...

... with log less than 1 meter. well logging cutting Upstream Oil & Gas accuracy flow in porous media interstitial liquid correspond viscosity permeability measurement porosity log analysis Fluid Dynamics pore porosity measurement apparatus determination capillary pressure...

.... The current and the future development plans' performances were assessed using detailed compositional simulation model that was constructed based recent rock and fluid characterization studies. The newly established QA/QC procedure for model's results accuracy has been successfully applied, and the lessons...