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Cawley, Gillespie and Associates, Inc.
Monthly Oil & Gas Pricing Averages
*Beginning 2019, the EIA spot prices for oil and gas were used instead of Wall Street Journal and Bloomberg spot prices.
*Beginning 2018, the Wall Street Journal spot prices were used instead of Bloomberg spot prices for gas prices. Historically, both are almost identical.
*EIA spot prices for crude oil are WTI Cushing futures prices which historically represent Bloomberg spot prices.
*(1) (3) First day WTI Cushing and Henry Hub oil and gas spot prices are sourced from EIA
*(4) First day Henry Hub gas spot prices are sourced from Platts Gas Daily
*(2) (5) 12 month averages for SEC prices calculated from EIA and Gas Daily first day prices.
*(6) (7) (8) Monthly benchmark averages used for differential calculations.
*(7) (8) Daily spot prices sourced from EIA.
*(9) Last day NYMEX gas price sourced from last day INO futures pricing.
Oil & Gas Prices (Prior Day Close)
Reserve Definitions & Classifications
- New SEC Guidelines for 2010: Final Rule
- New SEC Guidelines for 2010: Interpretations
- New SEC Guidelines for 2010: Summary of Definitions
- SPE-PRMS Guidelines: Final Release June 2018
- SPE-PRMS Guidelines: CG&A Summary of Definitions
- COGEH Definitions of Resources and Reserves
- Canadian NI-51-101 Guidelines – Standards of Disclosure
- Canadian NI-51-101 Guidelines – Companion Policy
Industry Organizations
- Society of Petroleum Engineers (SPE)
- Society of Petroleum Evaluation Engineers (SPEE)
- American Petroleum Institute (API)
- American Association of Petroleum Geologists (AAPG)
- American Association of Drilling Engineers (AADE)
- Society of Exploration Geophysicists (SEG)
- Society of Petrophysicists & Well Log Analysts (SPWLA)
