Action Learning Module Information       Close
Reservoir Simulation

Competency Statement:

Apply analytical and numerical simulation techniques to the development, testing and refining of a reservoir model, and the generation of an optimal reservoir exploitation plan.

Learning Objective:

Upon completion of this module, the participant should be able to
  • define reservoir simulation objectives
  • define simulator geometry and dimensions, and assign flow equations to the proposed model
  • define simulator grid and boundary conditions
  • compile reservoir model input parameters
  • develop finite-difference approximations to solve the flow equations
  • plan numerical simulation computer runs and interpret the results
  • use simulation results to determine the optimum exploitation scheme

Assignment Instruction:

A typical reservoir simulation study is conducted in four stages:
  1. Gather all relevant reservoir data.
  2. Initialize the developed model.
  3. Validate the model using a history matching process.
  4. Forecast the reservoir's future behavior.

Once the structure, thickness, porosity and permeability maps are obtained, the data need to be discretized according to the gridding system used. Fluid properties are entered into the model either using a data table or in the form of a correlation. For multi-phase flow problems, relative permeability relationships and capillary pressure curves also need to be obtained.

Models are typically initialized with respect to the water/oil or gas/oil contact depths and a reference datum-level pressure value.

For the initialization, the simulator is run until the hydrostatic equilibrium of the existing phases is established.

Validation of the model requires a detailed production history of all wells in the reservoir. The production data should contain information about open intervals, well stimulations and production rate of each phase (oil, gas, water).

After the model is history matched against the existing production data, it can be used to predict future reservoir behavior for different development scenarios.

Keep in mind that these predictions are only as good as the basic input that was entered into the model.

Your assignment here is to gather all the iso-surface maps and fit a body-centered grid on top of the reservoir structure.

You also need to collect all the PVT data that will be used during the simulation.