How do reservoir engineers forecast the production of an oil or gas field?

In petroleum engineering, reservoir engineers forecast the production of an oil or gas field by developing and utilizing a dynamic model of the reservoir.1

This process involves several key steps:

• Data Integration: Engineers collaborate with geoscientists, petrophysicists, and statisticians to transform a static geological model—which maps the reservoir's structure, stratigraphy, and deposition—into a dynamic one.1
• Dynamic Modeling: Using fluid properties, reservoir pressures, temperatures, and existing well data, the dynamic model simulates the behavior of the rock-fluid system.1
• Scenario Analysis: Engineers construct various production scenarios to account for variables such as enhanced recovery methods, subsurface stimulation, infrastructure changes, and fluctuations in product prices.1
• Iterative Refinement: The team continuously updates the model with new data to minimize uncertainties and risks, ultimately producing a forecast that estimates the volume of oil, water, and gas to be recovered over the life of the project.1

By integrating these complex physical and statistical inputs, engineers can establish efficient drainage patterns and determine the most effective methods for maximum production.1