Numerical Modelling / Simulation

A critical step in ensuring safe operations

Thermal Reservoir Simulation

For thermal in-situ operations, coupled geomechanical-reservoir simulations are conducted simultaneously to predict stress changes in the caprock. It is a critical step in ensuring that the injected steam stays within the producing formation.

The reservoir model typically begins with a geological description that concentrates on the physical aspects of the caprock. Various thermal injection scenarios are inputted into the reservoir model, while the corresponding changes in in-situ stresses, strains and other parameters are computed in the finite element geomechanics model.

Such simulations are heavily dependent on having right input into the models. Therefore, it is highly recommended to use lab and field measurements/tests to obtain key input parameters such as rock mechanical properties, rock strength and in-situ stresses. Model accuracy also depends on good data quality control, sound geological interpretation and correct model setup. At BGES, thermal reservoir simulations are performed by experienced subject matter experts.

Applications

Thermal reservoir simulation gives a comprehensive assessment of caprock integrity during steam-assisted gravity drainage (SAGD) or cyclic steam stimulation (CSS) operations. The AER also requires a caprock evaluation as part of the commercial licensing process.

Features & Benefits

Joint thermal reservoir simulation coupled with finite element modelling is the most comprehensive type of analysis available. At BGES, simulation is performed by technical experts specializing in thermal simulations.

Operations

A caprock simulation requires considerable processing time. BGES uses high power equipment that can significantly reduce modelling time. Additional services provided by BGES provide a convenient one-stop source for your modelling needs.

Integration of Services

From wellsite core collection, geotechnical lab testing, cased-hole logging, reservoir and caprock injection testing, data analyses, project management, regulatory reporting, to computer simulation and numerical modelling, our comprehensive and customizable service model offers maximum flexibility for our clients.

Previous Step

Geotechnical lab testing , Mini-frac/DFIT , Downhole data acquisition
and Cased-hole logging

CAVERN NUMERICAL SIMULATION

Reliable design of a subsurface salt cavern requires diligent analysis of the stability and integrity of the cavern over its planned operating life. Numerical simulations can provide valuable insights into changes in in-situ stresses and conditions throughout the cavern’s lifecycle.

Geomechanics modelling is heavily dependent on having accurate inputs with real-life data. Therefore, it is highly recommended to use lab and field measurements/tests to obtain key input parameters such as rock mechanical properties, rock strength and in-situ stresses. Model accuracy also depends on good data quality control, sound geological interpretation and correct model setup.

At BGES, numerical modelling of salt caverns is performed using the WIPP-creep viscoplastic model completed in a 4-stage process:

Stage 1: Development of a 3D Mechanical Earth Model
Stage 2: Simulation of existing salt cavern
Stage 3: Simulation of the complete cavern development
Stage 4: History matching and long-term forecasting of cavern behavior and stability

Applications

A numerical model gives a comprehensive assessment of cavern and caprock integrity for a new and existing caverns. A model is required under CSA Z341 in order to evaluate cavern spacing, geometry, roof configuration, and maximum injection/withdrawal rates, etc.

Features & Benefits

Our Geoscience & Engineering team provides end-to-end solutions in the field and in the laboratory to obtain high-quality data as inputs for numerical model development. Modelling is performed by technical experts specializing in salt cavern modelling.

Operations

At BGES, numerical modelling of caverns involves a 4-stage process using the WIPP-creep viscoplastic model, with results reviewed at each stage. Additional services provided by BGES provide a convenient one-stop source for your cavern simulation.

Integration of Services

From wellsite core collection, geotechnical lab testing, cased-hole logging, reservoir and caprock injection testing, data analyses, project management, regulatory reporting, to computer simulation and numerical modelling, our comprehensive and customizable service model offers maximum flexibility for our clients.

Previous Step

Salt Geotechnical Lab Testing, Mini-frac / DFIT, Downhole Data Acquisition,
Sonar Survey and Cased-hole Logging