How to Record Oil and Gas Investment Depletion Using the Units-of-Production Method
Recording the depletion allowance on an oil and gas mineral rights or working interest investment held by a natural resources PE fund as reserves are extracted.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Depletion Expense - Oil & Gas Working Interest | Expense (+) | 320,000.00 | - |
| Accumulated Depletion - Oil & Gas Investment | Asset (-) | - | 320,000.00 |
💡 Accountant's Note
Natural resource investments are depleted as the underlying reserves are extracted. Cost depletion is calculated using the units-of-production method: (Cost Basis / Total Estimated Recoverable Reserves) × Units Produced During Period. For investment companies under ASC 946 carrying assets at fair value, this may be superseded by the fair value mark — but depletion is still relevant for cost-basis tracking and tax reporting.
Practitioner & Systems Framework
💻 ERP Architecture
Maintain a reserve schedule (certified by a petroleum engineer annually per SEC rules) showing total estimated reserves by category (proved, probable). The depletion rate changes each period as production updates the reserve estimate. This is distinct from the fair value mark driven by commodity prices.
⚠️ Audit Flags
Auditors require a reserve certification from an independent petroleum engineer (required annually under SEC rules for public companies; best practice for PE funds). Reserve estimate changes materially affect both depletion expense and fair value.
📄 Required Documentation
Independent petroleum engineer reserve certification, units-of-production calculation schedule, production reports for the period, oil and gas revenue receipts.
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