OilCoder

Petro Agent — AI skill for Claude Code

AI community

Autonomous petrophysical reports from raw LAS well logs - the LLM decides, a golden-tested deterministic engine computes, honesty is enforced.

How to install Petro Agent

This entry records only its repository, not the path inside it, so there is no exact command to give. Open OilCoder/petro-agent and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Petro Agent does

Autonomous petrophysical reports from raw LAS well logs - the LLM decides, a golden-tested deterministic engine computes, honesty is enforced. Full report on the site.

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README

petro-agent

**The LLM decides. The engine computes. Nobody lies.**

An autonomous multi-agent system that turns raw well logs (LAS) into complete petrophysical reports — Vsh, porosity, saturation, net pay, uncertainty — **with no human intervention in the process**. Every number comes from deterministic, golden-tested code; the language model only chooses methods, intervals and analyses, and writes prose. When the result isn't credible, the report says so on its front page.

📊 **Full report & interactive site:**

Highlights

  • 0 numbers written by the LLM — a claim verifier ties every figure in the prose to a per-well JSON ledger, and rejects the rest (it happened live).
  • 198 Kansas wells (Schaben field — chosen because it deceives: two thirds of the column reads like spectacular porosity and is shallow sponge; you can only pass by analyzing, not by computing).
  • Engine validated against VOLVE's public interpretation (North Sea, untuned): r = 0.87–0.96; P10–P90 bands honestly recalibrated from overconfident (1.8–35% coverage) to calibrated (88–98%).
  • Eight agent versions measured against a declared-contaminated expert baseline — the best final agent (claude-opus-4.8 + thinking) chose 4/4 zones 100% inside producing rock; the yardstick itself was stress-tested with three deterministic cycles.
  • Total measured cost of the whole experimental arc: ~$50.

The site

Page What it tells
Home The problem, the invariant, methodology, results, verdict
Petrophysical engineer Can an AI read the formation? The rock-focused verdict
Software engineer Architecture, the experimental lever phases, costs, transferable lessons
Journal The evolution, ch