FLAC2D
Oil and gas simulation and modeling software
Oil and gas software
- Features
- Ease of use
- Ease of management
- Quality of support
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$399 per month
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What is FLAC2D
FLAC2D is a two-dimensional numerical modeling application for geotechnical and rock mechanics analysis using an explicit finite-difference approach. It is used to simulate stress–strain behavior, deformation, and stability of soil and rock around excavations, slopes, tunnels, and underground openings, including scenarios relevant to energy and subsurface projects. Typical users include geotechnical engineers, mining engineers, and geomechanics teams supporting subsurface design and risk assessment. The product emphasizes constitutive modeling and staged construction/sequence simulation in 2D rather than full-field 3D reservoir or process simulation.
Purpose-built geomechanics modeling
FLAC2D focuses on soil and rock behavior, including plasticity and non-linear material response, which aligns with geotechnical and geomechanics workflows. It supports modeling of excavation and construction sequences that are difficult to represent in general-purpose process or pipeline simulators. This makes it suitable for stability and deformation studies around underground openings and slopes in subsurface projects.
Efficient 2D scenario iteration
A 2D solver typically enables faster model setup and run times than comparable 3D analyses for many cross-section problems. This can help teams iterate on geometry, boundary conditions, and material parameters during early-stage design and sensitivity studies. It is practical when the engineering question is well represented by plane strain/axisymmetric assumptions.
Broad constitutive model support
The platform is known for supporting a range of constitutive models and material behaviors used in geotechnical practice. This allows analysts to test alternative assumptions for soil/rock strength and deformation without changing tools. It also supports staged loading and boundary condition changes that reflect real construction or operational sequences.
Limited to 2D analyses
FLAC2D is restricted to two-dimensional representations, which can be a constraint for problems with strong 3D effects. Users may need a separate 3D tool for complex geometries, well interactions, or spatially variable geology that cannot be approximated in 2D. This can add workflow complexity when projects require both 2D screening and 3D verification.
Not a full oilfield platform
Compared with integrated subsurface interpretation or field development platforms, FLAC2D does not function as an end-to-end environment for seismic interpretation, reservoir modeling, or production forecasting. Data integration with broader E&P datasets typically requires manual preparation or external preprocessing. Teams may need additional software for visualization, geologic modeling, and reservoir/process simulation.
Specialist expertise required
Accurate results depend heavily on appropriate constitutive model selection, parameter calibration, meshing strategy, and boundary condition design. These tasks often require experienced geomechanics practitioners and access to reliable lab/field data. Organizations without that expertise may face longer ramp-up times and higher risk of misinterpretation.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Monthly Subscription | $399 per month (plans "start at $399 / month" on official site) | Web license; "Monthly Subscription" described on site; license noted as not renewing (monthly). Contact sales for exact configuration and scope. |
| Annual Subscription | Contact sales / not publicly listed | Web license; described as "Annual Subscription" on site and auto-renews annually; price not published on site. |
| Perpetual (One-time) License | Contact sales / not publicly listed | Perpetual (non-expiring) license; includes one year technical support; point-release updates available with maintenance subscription. |
| Add-on options (Dynamics, Thermal, Creep, etc.) | $69 per month or $828 per year (each) | Listed per-option price on official FLAC2D product pages; User-Defined Module (UDM) is listed as "Free with any license". |
| Demo / Demonstration Mode | Free (no time limit) | Demonstration Mode: includes all options and does not expire; model-size limits apply (FLAC2D demo: maximum 1,000 zones). |
Seller details
Itasca Consulting Group, Inc.
Minneapolis, Minnesota, USA
1981
Private
https://www.itascacg.com/
https://x.com/ItascaCG
https://www.linkedin.com/company/itasca-consulting-group/
