Reservoir simulation is ubiquitous in the petroleum industry, and conditioning models to production data (history matching) has become an essential job of reservoir engineers. Traditional history matching methods directly perturb reservoir properties without regard to the existing geological continuity. When the geological heterogeneity is destroyed, the result is often a history-matched model ...

The aim of this study is to characterize and find the location of geological boundaries in different wells across a reservoir. Automatic detection of the geological boundaries can facilitate the matching of the stratigraphic layers in a reservoir and finally can lead to a correct reservoir rock characterization. Nowadays, the well-to-well correlation with the aim of finding the geological l...

Shale gas plays an important role in supplementing energy demand and reducing carbon footprint. A precise effective prediction of shale production is for optimizing completion parameters. This paper established a gated recurrent unit multilayer perceptron combined neural network (GRU-MLP model) to forecast multistage fractured horizontal well production. nondominated sorting genetic algorithm I...

History matching is used to constrain flow simulations and reduce uncertainty in forecasts. In this work, we revisited some fundamental engineering tools for predicting waterflooding behavior to better understand the flaws in our simulation and thus find some models which are more accurate with better matching. The Craig-Geffen-Morse (CGM) analytical method was used to predict recovery performa...

Constraining reservoir models to available field observation is an important step in reservoir simulation process especially when models aim at further development decision making. In the past two decades, several assisted history-matching methodologies have been proposed to help in the matter (gradient methods, streamlines, etc. Oliver and Chen, 2011). More recently, ensemble based methodologi...

Longwall mining alters the fluid-flow-related reservoir properties of the rocks overlying and underlying an extracted panel due to fracturing and relaxation of the strata. These mining-related disturbances create new pressure depletion zones and new flow paths for gas migration and may cause unexpected or uncontrolled migration ofgas into the underground workplace. One common technique to contr...

Reservoir simulations always involve a large number of parameters to characterize the properties of formation and fluid, many of which are subject to uncertainties owing to spatial heterogeneity and insufficient measurements. To provide solutions to uncertainty-related issues in reservoir simulations, a general package called GenPack has been developed. GenPack includes three main functions req...

Production forecasting is the basis for decision making in oil and gas industry, can be quite challenging, especially terms of complex geological modeling subsurface. To help solve this problem, assisted history matching built on ensemble-based analysis such as ensemble smoother Kalman filter useful estimating models that preserve realism have predictive capabilities. These methods tend, howeve...