Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add equinor/neqsim --skill neqsim-field-economicsgit clone --depth 1 https://github.com/equinor/neqsimWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/equinor/neqsim/neqsim-field-economics)<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-field-economics"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-field-economics/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/equinor/neqsim/neqsim-field-economics"><img src="https://agentmods.dev/badge/skills/equinor/neqsim/neqsim-field-economics.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00079 | $0.04643 |
| Opus 5.5 | $0.00032 | $0.01857 |
| Sonnet 5.5 | $0.00016 | $0.00929 |
| Haiku 4.5 | $0.00008 | $0.00464 |
Grade A, and why
neqsim-field-economics scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 347 lines — stays where its author put it; the contents beside it link to each section on GitHub.
NeqSim Field Economics Skill
Reference for petroleum project economics — cost estimation, cash flow modeling, tax regimes, NPV/IRR calculations, breakeven analysis, and uncertainty.
Economics Workflow Overview
Reservoir Volumetrics → Production Profile → Revenue Forecast
↓
CAPEX Estimate → Cash Flow Engine ← OPEX Estimate
↓
Tax Model (NCS/UK/Generic)
↓
NPV / IRR / Payback / Breakeven
↓
Monte Carlo Uncertainty (P10/P50/P90)
Cost Estimation
CAPEX Components (Typical Offshore NCS)
| Category | Typical Range | NeqSim Class |
|---|---|---|
| Wells (drilling + completion) | 200-800 MNOK/well | WellCostEstimator, WellMechanicalDesign |
| SURF (subsea, umbilicals, risers, flowlines) | 500-5000 MNOK | SURFCostEstimator |
| Topsides / Processing | 2000-15000 MNOK | FacilityBuilder + MechanicalDesign |
| Subsea equipment (trees, manifolds) | 100-500 MNOK/well | SubseaProductionSystem |
| Pipeline / Export | 50-300 MNOK/km | PipelineMechanicalDesign |
| FPSO hull + mooring | 5000-20000 MNOK | Parametric estimate |
| Decommissioning (ABEX) | 10-30% of CAPEX | DecommissioningEstimator |
NeqSim Cost Estimation Classes
// Well cost
WellCostEstimator wellCost = new WellCostEstimator();
wellCost.setRegion(SubseaCostEstimator.Region.NORWAY);
wellCost.setWaterDepth(350.0);
wellCost.setTotalDepth(3800.0);
wellCost.setDrillingDays(45);
wellCost.setCompletionDays(25);
wellCost.setRigDayRate(540000.0); // USD/day
double wellCapex = wellCost.estimate();
// SURF cost
SURFCostEstimator surfCost = new SURFCostEstimator();
surfCost.setRegion(SubseaCostEstimator.Region.NORWAY);
surfCost.setNumberOfWells(4);
surfCost.setFlowlineLength(25.0); // km
surfCost.setUmbilicalLength(27.0); // km
surfCost.setWaterDepth(350.0);
surfCost.setTreeType("vertical");
surfCost.setHasManifold(true);
double surfCapex = surfCost.estimate();
// Regional cost factors
RegionalCostFactors factors = new RegionalCostFactors("Norway");
double adjustedCost = baseCost * factors.getCostMultiplier();
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 6d ago Changed · +43 lines 46d7b934082b
- 1mo ago First seen · 304 lines · 79 tokens per session scan A 036c9e9be92a
neqsim-field-economics is a skill published in the GitHub repository equinor/neqsim (156 stars, last pushed today), licensed Apache-2.0. It adds 79 tokens to every session and 4,643 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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