OPM/opm-simulators
Nov 2024 – Sep 2025
5 Months active
Languages Used
C++
Technical Skills
C++ DevelopmentCode MaintenanceNumerical MethodsReservoir EngineeringSimulationTypo Correction
Stein Krogstad
PROFILE
Stein Krogstad
Stein Krogstad contributed to the OPM/opm-simulators repository by engineering robust enhancements for reservoir simulation workflows. He developed and refined group-controlled well update logic, introduced satellite production and injection support, and improved numerical stability in intersection calculations. Using C++ and leveraging skills in numerical analysis and code validation, Stein addressed edge cases in production scenarios, implemented safeguards against division-by-zero errors, and ensured accurate state handling for well potential calculations. His work focused on maintainability and correctness, with careful refactoring and validation updates that reduced the risk of simulation errors and improved the reliability of multi-well planning and reservoir engineering analyses.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
8Total
Bugs
3
Commits
8
Features
3
Lines of code
291
Activity Months5
Your Network
52 people
Work History
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 delivered satellite injection capabilities in the OPM simulators with a focus on correctness, validation, and maintainability. The work path included a refactor of satellite production and injection rate handling to ensure proper rank-0 processing, updates to validation keywords for satellite injection, and safeguards to prevent parent groups controlled by RESV or VREP (recursive for production and injection). The changes are backed by two commits that introduced satellite injection and production updates, followed by a squash of commits to streamline history.
2 Commits • 1 Features
Sep 1, 2025September 2025 delivered satellite injection capabilities in the OPM simulators with a focus on correctness, validation, and maintainability. The work path included a refactor of satellite production and injection rate handling to ensure proper rank-0 processing, updates to validation keywords for satellite injection, and safeguards to prevent parent groups controlled by RESV or VREP (recursive for production and injection). The changes are backed by two commits that introduced satellite injection and production updates, followed by a squash of commits to streamline history.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025Month 2025-08 — Well Group Simulation Enhancement delivered in OPM/opm-simulators, improving accuracy and robustness for satellite production in reduction-rate calculations, and adding a division-by-zero safeguard in the fraction calculator when potentials are zero. The changes enhance multi-well planning fidelity and reduce risk of erroneous results in production scenarios, supporting better asset development decisions.
August 2025
1 Commits • 1 Features
Aug 1, 2025Month 2025-08 — Well Group Simulation Enhancement delivered in OPM/opm-simulators, improving accuracy and robustness for satellite production in reduction-rate calculations, and adding a division-by-zero safeguard in the fraction calculator when potentials are zero. The changes enhance multi-well planning fidelity and reduce risk of erroneous results in production scenarios, supporting better asset development decisions.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary: Implemented a robustness improvement for IPR intersection extrapolation in OPM/opm-simulators, addressing edge-case behavior when the IPR line lies above all tabulated values. The change enhances stability of intersection calculations for flo and bhp, reducing the risk of instability in extreme scenarios and increasing reliability of reservoir simulations. The update is tracked under commit 983175aa49221275b7c8ec8f3d3da335bcfef65d.
1 Commits
Apr 1, 2025April 2025 monthly summary: Implemented a robustness improvement for IPR intersection extrapolation in OPM/opm-simulators, addressing edge-case behavior when the IPR line lies above all tabulated values. The change enhances stability of intersection calculations for flo and bhp, reducing the risk of instability in extreme scenarios and increasing reliability of reservoir simulations. The update is tracked under commit 983175aa49221275b7c8ec8f3d3da335bcfef65d.
April 2025
January 2025
1 Commits
Jan 1, 2025January 2025: Core stability improvements in OPM/opm-simulators with a critical bug fix to computeWellPotentialsImplicit. The fix ensures the function uses the provided well_state directly, removing a potentially copied state from the simulator and guaranteeing consistent and accurate potential calculations. This enhances reproducibility and reliability of simulations, supporting downstream analytics and decision-making. No new user-facing features were released this month; the work strengthens the foundation for future features. Key technologies demonstrated include robust state handling, careful memory management to prevent state drift, and disciplined Git version control (commit 21bed9e9533884cd2e8dda0916b983b72880a0db).
January 2025
1 Commits
Jan 1, 2025January 2025: Core stability improvements in OPM/opm-simulators with a critical bug fix to computeWellPotentialsImplicit. The fix ensures the function uses the provided well_state directly, removing a potentially copied state from the simulator and guaranteeing consistent and accurate potential calculations. This enhances reproducibility and reliability of simulations, supporting downstream analytics and decision-making. No new user-facing features were released this month; the work strengthens the foundation for future features. Key technologies demonstrated include robust state handling, careful memory management to prevent state drift, and disciplined Git version control (commit 21bed9e9533884cd2e8dda0916b983b72880a0db).
November 2024
3 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary: Focused delivery in the OPM/opm-simulators repository on improving accuracy and safety of group-controlled well updates within Blackoil models, alongside small readability improvements. The work delivered strengthens injection/production group constraint handling, enhances predictability of updates, and maintains code readability and maintainability.
3 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary: Focused delivery in the OPM/opm-simulators repository on improving accuracy and safety of group-controlled well updates within Blackoil models, alongside small readability improvements. The work delivered strengthens injection/production group constraint handling, enhances predictability of updates, and maintains code readability and maintainability.
November 2024
Activity
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Quality Metrics
Correctness85.0%
Maintainability82.4%
Architecture82.4%
Performance71.2%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++ DevelopmentCode MaintenanceCode ValidationNumerical AnalysisNumerical ComputingNumerical MethodsReservoir EngineeringScientific ComputingSimulationSoftware EngineeringTypo Correction
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