ESTD
Technical comparison of commercial reservoir simulators in terms of simulation limitation, accuracy and runtime in Haftkel model

Full field study via reservoir simulation is acknowledged as a robust technique in predicting reservoir scenarios and estimating reserve. Currently, commercial reservoir simulators including ECLIPSE, tNavigator, IMEX, INTERSECT, and RETINA are utilized for this purpose in both research and industry scales. ....

A Novel Numerical Method to Model the Dynamic Underbalanced Perforation Process

The final goal in a perforation operation is achieving the maximum production and reducing perforation damage, using optimal completion process. The Dynamic Underbalanced Perforation (DUP) as one of the more recent completion technologies minimizes or even eliminates the perforation crushed zone by optimizing the well's dynamic underbalance...

An Adaptive CPR-AMG Based Linear Solver for Simulating Geometrically Complicated and Fractured Reservoirs

A great deal of computational power and time is necessary for simulating highly heterogeneous fractured reservoirs with complex geometry; the efficiency of these computations is a major subject especially in large-scale heterogeneous and fractured reservoirs. So, simulating large scale, complex and fractured reservoirs with both minimum time...

An Efficient and Robust Method for Optimizing the Number of Non-Linear Iterations for Simulating Highly Heterogeneous Naturally Fractured Reservoirs

For speeding up the complex fractured reservoir simulating, we have given more attention to reducing runtime and improving efficiency of the solver. In this work, we describe an improved and computationally efficient version of Newton's method, which reduces ...

A Novel Linear Solver for Simulating Highly Heterogeneous Black Oil Reservoirs

A great deal of computational power and time is necessary for the simulation of highly heterogeneous fractured reservoirs with complicated geometry. Simulating such largescale complex reservoirs with both minimum time and maximum accuracy has always remained a topic of concern to reservoir simulation engineers worldwide. The currently used linear solvers in well-known commercial...

Technical Comparison of RETINA Domestic Black-Oil Reservoir Simulator with ECLIPSE Using a Number of Iranian Southwest Real Field Models

In recent years, a great deal of endeavor has been put forth concerning simulation of oil and gas reservoirs around the world, which has resulted in beneficial outcomes in predicting scenarios characterized by higher oil recovery and engineered production. In the oil and gas industry, common commercial simulators are utilized for the purpose of...

A new model for predicting asphaltene precipitation of diluted crude oil by implementing LSSVM-CSA algorithm

One of the severe problems in all the oil production stages from the pore walls of the reservoir rocks to the wellhead, transfer pipelines, and production units of a large portion of the world’s hydrocarbon reservoirs, is asphaltene precipitation and deposition from crude oil on solid surfaces. In this article, least squares support vector machine optimized by coupled simulated annealing is employed for...

Experimental Investigation of Water Based Colloidal Gas Aphron Fluid Stability

Today, the drilling operators use the Colloidal Gas Aphron (CGA) fluids as a part of drilling fluids in their operations to reduce formation damages in low-pressure, mature or depleted reservoirs. In this paper, a Taguchi design of experiment (DOE) has been designed to analyse the effect of salinity, polymer and surfactant types and concentration on the stability of CGA fluids. Poly Anionic Cellulose (PacR) and Xanthan Gum...

Advances in Parallel Reservoir Simulation Technology, Using Multi-Threaded Algorithms

The popularity of parallel reservoir simulation has increased in recent years due to availability of multi-core CPUs and the opportunity for run-time reduction, especially in complex and fractured reservoir models that include large amounts of data. However, the accuracy of classical domain decomposition techniques significantly decreases as the number of processing units increases...

A Novel Numerical Method to Model the Transient Underbalanced Perforation Process

The final goal in a perforation operation is achieving the maximum production and reducing perforation damage, using optimal completion process. The Dynamic Underbalanced Perforation (DUP) as one of the more recent completion technologies minimizes or even eliminates perforation crushed zone by optimizing the well’s dynamic underbalance. Dynamic underbalance is a transient underbalance process...

Numerical Modeling of the Propellant Assisted Extreme Overbalanced Perforation Process

A new method is developed to numerically model the propellant assisted extreme overbalanced perforating process and evaluate its effect on the well skin factor and productivity/injectivity. The model consists of cylindrical propellant combustion, fluid drainage through perforations, well fluid compression and movement, fractures propagation and flow through them. Using a suitable...