Product venture · Building in public
runspec.io
An AI-assisted OPM Flow simulation platform. Automating input deck generation. Removing the technical overhead that slows simulation workflows down.
Agentic AI
OPM Flow
Simulation
History Matching
Cloud Based
The problem
Setting up an OPM Flow simulation run is slow. Input deck generation is manual, repetitive and error-prone. Engineers with deep subsurface knowledge spend too many hours on syntax, file structure and configuration and not on interpretation and decision-making.
This is a problem since simulation exists. runspec.io is built to solve it.
This is a problem since simulation exists. runspec.io is built to solve it.
The solution
runspec.io automates OPM Flow input deck generation using AI. The platform translates reservoir engineering intent: fluid systems, grid definitions, schedule logic, output specifications into correct, complete input decks. Without manual file editing.
Built on ~24 years of field simulation practice. Designed to work the way reservoir engineers actually think.
Built on ~24 years of field simulation practice. Designed to work the way reservoir engineers actually think.
Current stage
Early concept.
Building in public.
Building in public.
runspec.io is in early development. I am building it openly and sharing progress, technical decisions and workflow experiments on LinkedIn as the product takes shape.
If you are a reservoir engineer working with OPM Flow, or someone interested in where AI-assisted simulation is going, I want to hear from you. Early conversations with engineers shape better products.
If you are a reservoir engineer working with OPM Flow, or someone interested in where AI-assisted simulation is going, I want to hear from you. Early conversations with engineers shape better products.
3D reservoir grid · GOC & OWC contacts · OPM Flow simulation input
Why this product is credible
Field depth
~24 years of OPM Flow, ECLIPSE and Intersect simulation across chalk, sandstone, carbonate and unconventional reservoirs. The pain points are known from the inside.
Open source foundation
OPM Flow is the emerging open-source alternative to commercial simulators. runspec.io is built to accelerate its adoption — making a powerful tool accessible without the legacy overhead.
AI at the right layer
AI handles the structural, syntactic work. Engineering judgment stays with the engineer. The automation is targeted — not a black box replacing subsurface thinking.
Follow the build.
Progress, technical decisions and workflow experiments are shared on LinkedIn. Join the conversation.
LinkedIn → Klaas Kostro