Financial research concept

Proved Developed Reserves: Producing and Developed Oil and Gas Inventory

Proved developed reserves are proved oil and gas volumes expected to be recovered from existing wells and installed facilities, making them the more developed portion of proved reserves.

By Lee BaileyPublished Sep 25, 2026

Research context

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Research date: Sep 25, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context: 18 connected conceptsPart of the reviewed Upstream E&P Economics; issuer definitions remain distinct where disclosed.
Company examples: 1 reviewed companyRelationships reflect supported examples, not a normalized cross-company KPI ranking.

EOG example
Why developed status matters
Investor use
Source
Part of the Upstream E&P Economics
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Proved developed reserves are the portion of Proved Reserves expected to be recovered through existing wells and equipment or from installed infrastructure under the applicable reserve rules.

They are distinct from proved undeveloped reserves, which require additional development activity.

EOG example

EOG reported 3.346 billion BOE of net proved developed reserves at December 31, 2025, up from 2.566 billion BOE a year earlier.

The increase reflected development activity, reserve additions, acquisition effects, revisions, and production.

Why developed status matters

Two producers can report the same total proved reserves but have very different future capital needs.

A larger proved-developed share generally means more of the reserve base is tied to wells and facilities already in place. That does not make the reserves automatically more valuable, because decline rates, operating costs, commodity mix, and abandonment obligations still matter.

Investor use

Compare proved developed reserves with:

total proved reserves;
proved undeveloped reserves;
annual production;
future development costs; and
PUD conversion activity.

The developed/undeveloped split is a capital-intensity lens, not a complete valuation metric.

Source

EOG Resources 2025 Form 10-K

Part of the Upstream E&P Economics

Connect realized pricing, per-BOE revenue and costs, reserve development, PUD conversion, and standardized reserve value to understand exploration and production economics.

Browse the full operating model in Company Analysis →

Where this concept fits

Reserve renewal, development capital, and standardized valueCurrent relationship
Reserve replacement and finding-and-development cost connect depletion with reserve renewal. Developed and undeveloped reserves show development status, PUD conversion volume and capital cost show execution, and future production and development costs feed the standardized discounted reserve-value calculation.
Finding and Development Cost Reserve Replacement Ratio Future Development Costs Future Production CostsProved Developed ReservesCurrent conceptProved Undeveloped Reserves PUD Conversion Capital Cost PUD Conversion Volume Standardized Measure Discount Oil & Gas Standardized Measure
Commodity realizations and revenue per BOE
Crude and natural-gas benchmark differentials plus NGL realization relative to WTI show how market and location effects shape pricing, while composite operating revenue per BOE combines those realizations with production mix into one issuer-level revenue measure.
Operating Revenue per BOE Oil Realization Differential Gas Realization Differential NGL Realization % of WTI
Operating cost and per-unit profitability
Lifting cost frames field-level production expense, GP&T cost captures processing and delivery, and DD&A per BOE allocates capitalized asset costs across production. Composite operating income per BOE then shows the resulting issuer-defined per-unit operating profitability after the included cost base.
Lifting Cost Operating Income per BOE Upstream DD&A per BOE GP&T Cost per BOE

See It in Company Research

These companies are examples of how the concept is reported or discussed in public filings. Definitions can differ by issuer; these links open company research rather than a normalized metric comparison.

EOGOpen operating-model research →17 of 18 reviewed concepts in Upstream E&P EconomicsReserve renewal, development capital, and standardized value10 of 10 bridge concepts supportedContinue through this bridge:Finding and Development Cost Future Development Costs Future Production Costs Oil & Gas Standardized Measure Proved Undeveloped Reserves PUD Conversion Capital Cost PUD Conversion Volume Reserve Replacement Ratio Standardized Measure Discount

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