Wellbore instability is one of the most critical challenges affecting not only the well construction phase, but the entire life cycle. It is one of the major causes of non-productive time (NPT) with issues such as borehole collapse, lost circulation, stuck pipe, sand production and other related well failure events.
Elfen wellbore can assist in mitigating many of these risks in a self-contained easy to use User Interface bespoke for wellbore applications.
Many capabilities such as drilling stability, fines migration, completion systems, near wellbore fracture damage prediction due to perforation modelling and subsuequently injection and depletion along with the valuable aspect of being able to capture the onset of sanding.
Complex near-wellbore failure mechanisms captured with advanced constitutive material model
Advanced constitutive material models to capture complex near wellbore formation responses
Detailed well-string model in highly compacting reservoirs, capturing buckling and wrinkling failure modes of casing
Assessment of well-life integrity of expandable sand screen systems via direct interaction between screen and formation affected by drawdown and depletion
Casing shear integrity due to fault shear, including local formation compliance against casing
Example of coupled mechanical-hydro flow in poorly consolidated sandstones – capturing geomechanical effects on injected fluid flow
Sand screen plugging due to sand migration in depleting reservoir
Fines migration assessment in injector wells resulting in permeability damage and hence reduced injectivity
Well trajectory assessment by traditional 1D geomechanical methods, such as sand prediction assessments
Analytical wellbore stability; Mud-Weight Window and sensitivity to well trajectory (Polar Plots)
The entire wellbore lifecycle can be simulated using Elfen Wellbore enabling Operators to mitigate risks
Features and Benefits
- Integration between log-based field data and FE modelling; insitu stresses and material properties can be mapped from 1d/3d MEM
- Robust modelling of complex phenomena with simple, intuitive and fast UI
- Log tool includes both predefined functions (e.g. MWW and polar plots) and a process editor for bespoke calculations
- Sophisticated material models capable of representing
- Rate dependency (creep)
- Multi-field (Mechanical, seepage, mass)
- Production prediction
- Tools aid managing and mitigating risk
- Address uncertainty (sensitivity assessment)
- Understanding of operating conditions and setting safety factors
Applications such as Shale Creep, Salt Closure and Decommissioning & Abandonement can also be simulated within the Elfen wellbore module.
A standalone software application comprising multiple modules to model the wellbore and near wellbore throughout the life-of-the-well.
Elfen Advanced provides a full understanding of the stress regime, deformation, seismogenic zone, particle size prediction and production profile that results from the excavation of open pits, long wall mines or sub-level caves.