Reservoir SimulationFundamentals, Formulations and Solution Process Danissa Rodriguez Mendozadanissa_rodriguezmendoza@yahoo.es

• Fundamentals of Reservoir EngineeringBy L.P. Dake

• SPE Monograph Series, Vol 13 Reservoir SimulationCalvin C Mattax/Robert Alton

• Petroleum Reservoir S. Khalid Aziz Antonin Settari

Hydrocarbon Bearing Formation

Why Simulate? What Benefits?

• Understand the Reservoir • Examine the Reservoir Performance & Recovery

Mechanism • Feasibility Study of EOR Technologies • Optimization of Key Reservoir Development parameters

Purpose of Reservoir Simulation and Reservoir Management

What is a Simulator?

• A numerical model of reservoir made up of a large number of cells. Equations are solved to calculate pressures and flows

• Underlying concepts • What can it do?

What does a Simulator Need (Major Components)?

• Structural information • Rock properties • Fluid properties • Well data (trajectory, completion…) • Historical production & operating constraints

History of Simulation

• Analogy

• Decline Analysis

• Classical Analysis

- Well Productivity - Recovery Factors - Reservoir Data - History Match - No Operational Change- Indication of Drive Mechanism - Volumetric Analysis - Material Balance - Fluid Displacement

History of Simulation con’d

• Physical Models

• Numerical Models

- Resistance/Capacitance - Analogue - Potentiometric- Streamtube - Finite Element - Finite Difference

The key to learning reservoir simulation is to understand the workflow involved in making a simulation study.