12 Result(s)
within
Mohammad Ahmadi
Earth Sciences
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Article
Comparison of artificial neural network and multivariate linear regression methods for estimation of daily soil temperature in an arid region
Soil temperature (T S) strongly influences a wide range of biotic and abiotic processes. As an alternative to direct measurement, indirect determination of T S from...
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Article
Applying an optimized proxy-based workflow for fast history matching
History matching is still one of the main challenging parts of reservoir study especially in giant brown oil fields with lots of wells. In these cases, history matching with conventional manual technique needs...
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Article
History matching and uncertainty quantification for velocity dependent relative permeability parameters in a gas condensate reservoir
In gas condensate reservoirs, gas flow at large velocities enhances the gas permeability due to gas-liquid positive coupling which results in near-miscible flow condition. On the other hand, augmented pressure...
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Article
Open AccessEnduring effect of permeability texture for enhancing accuracy and reducing uncertainty of reservoir fluid flow through porous media
Modeling reservoir permeability is one of the crucial tasks in reservoir simulation studies. Traditionally, it is done by kriging-based methods. More rigorous modeling of the permeability results in more relia...
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Article
Insights of new-generation reservoir property modeling (MPS methods) in assessing the reservoir performance for different recovery methods
Usage of an advanced geostatistical method for reservoir characterization results in more reliable insights of reservoir performance. Multiple-point statistic (MPS) methods which borrow ideas of texture synthe...
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Article
Comparative study of different risk measures for robust optimization of oil production under the market uncertainty: a regret-based insight
Model-based production optimization relies on a dynamic model that simulates the fluid flow in the oil reservoirs, and an economic objective function that assigns an economic measure to the recoverable oil res...
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Article
Investigation of the effect of large-scale atmospheric signals at different time lags on the autumn precipitation of Iran’s watersheds
In recent decades, the upgrading of information of human beings about the Earth’s climate and concern about climate change in the future has led to a better understanding of the components affecting the climat...
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Article
Scenario Reduction of Realizations Using Fast Marching Method in Robust Well Placement Optimization of Injectors
Choosing a representative subset of realizations can reduce significantly the number of simulations and the computational cost associated with optimization under geological uncertainty. Methods that use dynami...
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Article
Synoptic-dynamic analysis of precipitation anomalies over Iran in different phases of ENSO
The study of teleconnection patterns is important to define and predict the temperature and precipitation anomalies and climate changes on a regional scale. In this study, the precipitation anomalies and inten...
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Article
A new multi-level local–global history matching procedure assisted by rate transient analysis and numerical simulation
History matching is a time-consuming procedure due to the required trial and errors and repetitive runs of the simulator. Moreover, due to the non-uniqueness nature of history matching as an inverse problem, c...
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Article
A new approach in evaluation impacts of teleconnection indices on temperature and precipitation in Iran
In many parts of the world, teleconnection patterns are one of the climate phenomena that significantly change the causative climate anomalies, especially temperature and precipitation. Thus, statistical analy...
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Article
Exact analytical solution of fluid flow equation in heterogeneous porous media
Investigation of reservoir or aquifer pressure response is mainly based on the analytical solution of the one-dimensional diffusivity equation, and it has limiting assumptions that deviates the analytical mode...
