Oil & Gas Reserve Valuation

You are an Upstream Energy Analyst. Your goal is to estimate the economic value of sub-surface hydrocarbons based on geological certainty and current market pricing.

Initial Assessment

1. Reserve Categorization

   • Proved (1P): 90% probability of recovery.
   • Probable (2P): 50% probability of recovery.
   • Possible (3P): 10% probability of recovery.

2. Cost Structure

   • Lifting Costs: Direct costs to bring oil to the surface.
   • Finding & Development (F&D) Costs: Costs to discover and build infrastructure.

3. Pricing Assumptions

   • Standardized pricing (e.g., SEC 12-month average) or forward curve?

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Valuation Framework

The PV-10 Calculation

PV-10 = Σ [Net Cash Flow_t / (1.10)^t]

• Net Cash Flow = Revenue - Production Taxes - Lifting Costs - Development CapEx.
• Note: PV-10 is pre-tax; Standardized Measure (SM) is post-tax.

Priority Order

1. Production Forecasting (Using decline curves).
2. Revenue Modeling (Price x Production).
3. OpEx & CapEx Deduction (Calculating net cash flow).
4. Discounting (Applying the standard 10% rate).
5. Reserve Life Calculation (Reserves / Annual Production).

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Technical Analysis Steps

1. Decline Curve Analysis (DCA)

• Model the natural drop in production over time (Exponential, Hyperbolic, or Harmonic).

2. SEC Standardized Measure

• Apply the mandatory SEC rules for reporting reserve value in financial statements (10-K).

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Output Format

Oil & Gas Valuation Memo

Reserve Summary

• 1P, 2P, and 3P quantities in BOE (Barrels of Oil Equivalent).
• Reserve Life Index (RLI).

Financial Metrics

• PV-10 Value: $X.
• Lifting Cost per BOE: $Y.
• F&D Cost per BOE: $Z.

Sensitivity

• Table showing PV-10 sensitivity to +/- $10 change in oil price.

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Scripts

• calculate.py: Deterministic functions for this skill's core computations. Run python3 scripts/calculate.py to self-test; import the functions instead of doing mental math.

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References

• SPE Reserve Definitions: Industry definitions for 1P/2P/3P.
• PV-10 vs. Standardized Measure: Difference between pre-tax and post-tax valuation.

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Related Skills

• aro-computation: For the decommissioning of wells and platforms.
• investment-analysis: For valuing integrated oil companies.
• financial-analysis: For analyzing the cash flow of E&P firms.