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Elfen wellbore & well log v.1.7 - Commercial Release: 11th November 2020

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Successful hydrocarbon recovery has become increasingly challenging with the oil and gas industry exploring reservoirs under unfavourable geological conditions. Many operations rely on wellbore stability, usually provided by suitable mud-weight. Estimating the operating mud-weight window requires the combination of in-situ stress conditions, well trajectory and formation material properties to eliminate instability issues.

Elfen well log software is a simple yet powerful tool, which amongst other operations conducts analytical calculations to predict the onset of plastic yielding and damage around a wellbore. However, since analytical assumptions can become limiting, Elfen well log is directly integrated with Elfen wellbore, a dedicated finite element software package for modelling near-wellbore scenarios. These models can be used to assess more accurately areas of concern initially raised from analytical estimates. Together with advanced constitutive material models, various complex mechanisms can be captured including:

  • Breakout and breakdown modes
  • Assessment of any stress condition
  • Full range of well inclination / azimuth
  • Automated parameter sensitivity studies

Features and Benefits:

  • Integration between log-based data /assessment and state-of-the-art finite element modelling; parameters directly mapped from 1D/3D MEM
  • Robust modelling of complex phenomena with simple, intuitive and fast UI
  • Elfen well log includes predefined functions such as mud-weight windows and polar plots as well as a process editor for bespoke calculations
  • Sophisticated material models capable of representing

-Tensile, shear and compaction yielding
-Planes of weakness / bedding

  • Tools aid managing and mitigating risk:

- Address uncertainty (sensitivity assessment)
- Understanding of operating conditions and setting safety factors

Further details: visit

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