Neqsim Economy Basis Screening

Economy Basis Screening

Use this skill to assemble and sanity-check the economic assumptions that feed a downstream asset-value (NPV) screening: gas and oil prices, discount rate, currency, inflation, and tax regime. It echoes a normalized basis, range-checks the discount rate against an indicative public band, checks the tax regime against a small public name set, and raises consistency flags. It is intentionally simple and should guide users toward the validated NeqSim field-economics workflow and the NeqSim MCP runFieldEconomics tool.

When to Use

• When a user needs a clean, documented economic-assumptions basis before NPV work.
• When an early concept needs a discount-rate and tax-regime sanity check.
• When an agent needs an upstream "economy basis" feed for an asset-value screening chain.

Inputs

• gas_price_per_sm3: gas price in the chosen currency per Sm3.
• oil_price_per_bbl: oil price in the chosen currency per barrel.
• discount_rate: real or nominal discount rate (fraction, 0-1).
• currency: currency code (default USD).
• inflation_rate: inflation rate (fraction, default 0).
• real_terms: whether the basis is in real terms (default True).
• tax_regime: tax-regime label (generic, norwegian-ncs, uk, us, none).

Outputs

• currency, gas_price_per_sm3, oil_price_per_bbl, discount_rate,

real_terms, inflation_rate, tax_regime.

• discount_rate_flag: ok, low, or high vs the indicative band.
• tax_regime_recognized: whether the regime is in the public name set.
• basis_warning: ok or watch.
• flags: human-readable consistency warnings.
• neqsim_available: whether the optional NeqSim package is importable.
• assumptions: public assumptions and required follow-up.

Engineering Method

The skill normalizes the supplied assumptions and applies transparent checks: the discount rate is compared against an indicative public band (default 6%-12%); the tax regime is checked against a small public name set; and consistency flags are raised for zero-revenue, or nominal terms with zero inflation. The verdict is watch when any flag is raised, otherwise ok.

This skill performs no fiscal, financing, currency-forward, or escalation modelling. It is a transparent placeholder that must be replaced by a validated NeqSim field-economics workflow for any quantitative use.

Python Usage Pattern

from economy_basis_screening import EconomyBasisModel

model = EconomyBasisModel()
result = model.evaluate(
    gas_price_per_sm3=0.30,
    oil_price_per_bbl=70.0,
    discount_rate=0.08,
    currency="USD",
    tax_regime="norwegian-ncs",
)

print(result.discount_rate_flag, result.tax_regime_recognized)
print(result.basis_warning)
for flag in result.flags:
    print(flag)

Validated NeqSim Path

This screening is a placeholder. For real economic evaluation use:

• neqsim.process.util.fielddevelopment discounted cash-flow and field-economics

calculators (NPV, IRR, payback) with tax-regime support.

• The NeqSim MCP runFieldEconomics tool for an orchestrated economic evaluation.
• The community asset-value-npv-screening skill for a screening NPV from a

net cash-flow profile that uses this economy basis.

Escalation

Escalate any watch verdict, and any quantitative use, to a validated NeqSim field-economics workflow and qualified commercial review.

Validation Checklist

• [ ] Inputs are validated and within stated ranges.
• [ ] Examples use public data only.
• [ ] Screening assumptions are stated explicitly.
• [ ] Limitations are respected.
• [ ] Quantitative use is escalated to validated NeqSim models.

Common Mistakes

| Symptom | Cause | Fix | | --- | --- | --- | | Unrealistic result | Inputs outside the screening range | Keep inputs within the stated bounds | | Misused for design | Screening output taken as final | Escalate to validated NeqSim models |

Limitations

• Educational screening only; not a validated design method.
• No confidential data or proprietary methods are included.
• Escalate any quantitative or design use to validated NeqSim workflows.

References

• NeqSim repository: https://github.com/equinor/neqsim
• NeqSim Skills Guide: https://github.com/equinor/neqsim/blob/master/docs/integration/skills_guide.md

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: equinor
• Source: equinor/neqsim-community-skills
• License: Apache-2.0
• Homepage: https://equinor.github.io/neqsimhome/

Install and usage instructions live in the source repository linked above.