Oil Price Scenario Analysis
Executive Summary
Key Takeaways
- ✓ Oil price is one of the single most influential variables in an oil and gas financial model and should be tested through a defined set of scenarios rather than a single flat assumed price.
- ✓ A forward curve or bank-defined price deck, rather than a flat long-term price assumption, better reflects the market's own current expectation of future prices and is the typical base case basis for reserve-based lending and investment analysis.
- ✓ Explicit upside and downside price stress cases should be presented alongside the base case, not as a replacement for it, so a reader can see how project economics and debt serviceability change under each.
- ✓ Price scenario analysis should be applied consistently to both revenue and any price-linked fiscal terms, such as a production sharing contract's R-factor, since price affects both sides of that mechanism simultaneously.
Objective¶
This guide sets out how oil price scenarios are constructed for financial modelling, within Oil & Gas Financial Modelling.
Forward Curve and Bank Price Deck as the Base Case¶
Rather than a flat long-term price assumption held constant across the model's life, the base case should typically be built from a forward curve, the market's current pricing for future delivery, or a bank-defined price deck where the model supports a reserve-based lending facility. A bank price deck is typically more conservative than the market forward curve, reflecting the lender's own risk appetite for calculating the borrowing base.
Structuring Upside and Downside Stress Cases¶
Beyond the base case, the model should carry explicit upside and downside price stress scenarios, presented alongside the base case rather than replacing it, so a reader can directly compare how project economics and, where relevant, debt service coverage change under each scenario. This structure is what allows a lender or investment committee to assess resilience under a plausible adverse price environment, not just performance under the expected case.
Flowing Price Scenarios Through Fiscal Terms¶
Where a fiscal regime such as a production sharing contract ties the profit split to an R-factor or similar cumulative measure, price scenario analysis must flow through to that mechanism as well as to gross revenue, since price affects both simultaneously, addressed further in Fiscal Regime Modelling. Testing a price scenario against revenue alone, while holding fiscal split assumptions static, understates the scenario's true combined effect.
Common Structuring Pitfalls¶
- Using a single flat price assumption rather than a forward curve or defined price deck reflecting current market or lender expectations.
- Presenting only a base case without explicit upside and downside stress scenarios.
- Applying a price scenario to revenue without flowing it through to price-linked fiscal mechanics such as an R-factor.
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Related Pillars¶
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Related Glossary¶
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Frequently Asked Questions
Why shouldn't oil price be modelled as a single flat assumption?
Because oil price is one of the single most influential variables in an oil and gas model, and a flat assumption held constant across the model's life fails to represent the genuine uncertainty and market expectation embedded in the current forward curve, understating the range of outcomes a decision should be tested against.
What is a bank price deck?
A price forecast set by a lender, typically more conservative than the market forward curve, used specifically to calculate a reserve-based lending borrowing base, addressed in full in Reserve-Based Lending, and distinct from a company's own internal planning price assumption.
How should upside and downside price stress cases be presented?
Alongside the base case, not as a replacement for it, so a reader can directly compare how project economics and debt serviceability change under each scenario relative to the base case they are stress-testing.
Why does oil price scenario analysis need to flow through to fiscal terms, not just revenue?
Because in a production sharing contract or similar fiscal regime, addressed in Fiscal Regime Modelling, price affects both gross revenue and the R-factor or profit-split mechanics simultaneously, so a price scenario applied only to revenue while leaving fiscal terms static misrepresents the actual combined effect of a price change.
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