Reservoir Modeling and Simulation Software Overview

Vocabulary flashcards covering key concepts, simulation methods, physics models, and technologies in reservoir engineering and numerical simulation.

tNavigator Simulator

A high-performance software platform designed to model fluid movement through oil and gas reservoirs by synthesizing fluid, geophysical, and geological information into active computer models.

Reservoir Simulation

The process of forecasting oil and gas field production under different operational plans prior to financial investments, assisting engineers in positioning wells, calculating reserve volumes, and creating extraction strategies.

Black Oil Simulation

A fluid behavior model that represents fluids as basic two- or three-phase elements (gas, water, and oil) driven primarily by temperature and pressure changes.

Compositional Simulation

A simulation model that tracks distinct hydrocarbon components to precisely represent miscible gas interactions and phase shifts.

Thermal Simulation

A simulation model that evaluates temperature shifts and heat transfer, essential for heavy oil extraction techniques such as steam injection.

Reservoir Grid

A three-dimensional framework that partitions an underground formation into distinct mathematical blocks, serving as the spatial structure where rock-fluid interactions and flow calculations occur.

Local Grid Refinement (LGR)

A technique that breaks down larger grid blocks into smaller, more detailed cells to enhance precision in specific zones without slowing overall simulation speed.

Dual-Porosity Modeling

A modeling approach for naturally fractured reservoirs that divides the formation into a low-permeability/high-storage rock matrix and a high-permeability/low-storage fracture network.

Enhanced Oil Recovery (EOR)

Specialized techniques utilized to produce hydrocarbons following initial depletion and secondary waterflooding phases by improving sweep efficiency, lowering oil viscosity, and modifying fluid-rock interactions.

Water-Alternating-Gas (WAG) Injection

An EOR technique that cycles between pumping water and gas into a formation to swell trapped oil, lower its viscosity, and improve volumetric sweep efficiency.

Wettability

The preference of a rock surface to adhere to either oil or water, governing relative permeability and capillary pressure in the reservoir.

Discrete Fracture Network (DFN)

A digital model that explicitly maps out specific fracture planes by detailing their exact aperture, size, and orientation rather than averaging fracture properties.

Geomechanical Modeling

An analysis of physical deformation, pore pressure shifts, and stress fields within underground rock formations that connects fluid movement with mechanical rock reactions.

Caprock

An impenetrable rock layer that acts as a seal to contain and trap fluids within an underlying reservoir structure.

Carbon Capture and Storage (CCS)

The process of simulating the introduction, migration, and permanent containment of captured carbon dioxide within depleted oil fields or saline aquifers.

Streamline Analysis

A modeling technique that generates visual lines showing the direction of fluid velocity at a specific time, providing rapid insight into flow paths without heavy computational demand.

Allocation Factors

Values calculated during streamline analysis that indicate the precise percentage of injected fluid that travels from a given injector well to each producing well.

History Matching

The practice of calibrating a simulation model by adjusting unknown subsurface variables until the model's output matches real historical production data from the field.

Assisted History Matching

An automated approach that uses algorithms to rapidly alter multiple reservoir parameters across numerous simulation runs to efficiently identify geologically valid models.