HAVANA – Fault Modelling
- Fields involved Geomodelling
HAVANA is a software tool for describing faults and their impact on fluid flow in petroleum reservoirs. It has a unique way of representing faults.
HAVANA can be used for:
- Studies of flow effects on all fault scales.
- Adding faults to simulation grids by displacing grid cells or by modifying transmissibility multiplicators.
- Studies of the geometric uncertainty of the faults on volumes.
HAVANA has a unique way of representing faults. Each fault is described by:
- The fault plane geometry.
- The displacement along the fault plane.
- The volume influenced by the fault.
- A fault operator that is able to: Displace a 2D surface or 3D corner-point grid, reverse the displacement to remove a fault from a 2D surface or 3D grid.
![](https://nr.no/content/uploads/sites/2/2021/01/Havana1-3.jpg)
![](https://nr.no/content/uploads/sites/2/2021/01/Havana2-4.jpg)
The figures show pure linearity and a artistic fault modeled with Havana.
In Havana, faults are not just planes or surfaces, but objects with properties that can affect, and modify, reservoir models.
![](https://nr.no/content/uploads/sites/2/2021/01/Havana3.png)
Havana capabilities
Havana capabilities
Simulation of new faults
This functionality uses an elliptic fault model and is mainly used to simulate sub-seismic faults, allowing among other things:
- Simulation of faults based on trends.
- Simulation of “children faults” around larger faults.
- Possibility to control grouping of faults.
Fault surface uncertainty modeling
HAVANA can be used to study the uncertainty in fault surface geometry:
- Modeling and visualization of fault surface uncertainty envelopes.
- Deterministic change in fault location.
- Deterministic change in fault dip.
- Simulation of fault surfaces.
Fault displacement modeling
HAVANA can create displacement fields for faults based on input fault lines:
- Prediction of fault displacement field.
- Update of fault lines and horizons.
- Simulation of fault displacement fields.
Update of simulation grids
The simulation grid can be updated based on changes in the fault model:
- Addition of new faults to the simulation grid.
- Alternation of permeabilities based on simulated (small) faults.
![](https://nr.no/content/uploads/sites/2/2021/01/Havana4-1.png)