What it means
Oil and gas companies rarely produce only gas. Their wells yield crude oil, natural gas liquids, and dry gas together, which makes it awkward to state the size of a field or a company's reserves in one number.
BCFE solves this on the gas side. Volumes of oil and liquids are converted into the amount of natural gas with the same energy content, then added to the gas volume to give a single equivalent figure.
The standard conversion rests on energy content. One barrel of oil contains roughly the same energy as six thousand cubic feet of natural gas, so each barrel counts as six thousand cubic feet equivalent.
A company holding ten billion cubic feet of gas and one million barrels of oil would report about sixteen BCFE, since the oil converts to six billion cubic feet equivalent. Investors use the unit to compare companies, value reserves, and track production growth on a like-for-like basis.
Managers should treat BCFE as an energy measure, not a value measure. Gas usually sells for far less per unit of energy than oil, so two companies with identical BCFE can have very different revenue depending on the oil-to-gas mix.
The same caveat applies to the oil-side version of the unit, barrels of oil equivalent. Always check the underlying mix before drawing commercial conclusions from an equivalent-volume headline.
The unit anchors several standard industry metrics. Reserve reports separate proved developed volumes, which can flow with existing wells, from proved undeveloped volumes that need new drilling, and both are stated in BCFE for gas-weighted companies.
Analysts then divide enterprise value by proved BCFE to compare acquisition and exploration costs across producers, and they track the reserve replacement ratio, new reserves added divided by the year's production, to see whether a company is living off its inventory or renewing it.
In practice
Real-world examples.
Example
A producer reports annual production of 90 BCFE, combining 70 billion cubic feet of gas with about 3.3 million barrels of oil and liquids converted at six thousand cubic feet per barrel. Investor presentations show the split clearly, since the market values the oil fraction differently.
Example
Two shale companies each report 500 BCFE of reserves, but the one with 40% liquids content trades at a premium because its barrels sell for more per unit of energy. Reserve reports footnote the six-to-one conversion so readers can rebuild the gas and oil split behind the headline number.
Example
An acquisition announcement values a gas-heavy field at a price per BCFE well below recent oil-rich deals, reflecting the lower realised price of gas. The buyer's analysts adjust the price for the share of undeveloped reserves before comparing it with other transactions.
Formula
Calculation
BCFE = gas volume in billions of cubic feet + (oil and liquids in barrels x 6,000) / 1,000,000,000. Example: 10 billion cubic feet of gas plus 1 million barrels of oil = 10 + 6 = 16 BCFE.
A second example shows why the number is an energy measure and not a value measure. Use invented round prices of $3 per thousand cubic feet of gas and $60 per barrel of oil, so each thousand cubic feet equivalent of oil is worth $60 / 6 = $10.
- Company A holds 100 BCFE, all gas: 100,000,000 thousand cubic feet x $3 = $300,000,000.
- Company B holds 100 BCFE, of which 30 BCFE is oil and liquids: gas 70,000,000 x $3 = $210,000,000, plus oil 30,000,000 x $10 = $300,000,000, a total of $510,000,000.
- Same BCFE, but Company B's output is worth $210,000,000 more at these prices.Case study
Seen in the real world.
This fictional, illustrative example follows Blue Mesa Energy, an invented producer that reported year-end reserves of 480 BCFE, up from 430 BCFE, and saw its share price rise on the headline. An analyst at a pension fund looked deeper. Gas volumes had grown strongly, but oil and liquids had slipped from 25% to 18% of the energy mix.
Because oil earned roughly three times the gas price per unit of energy that year, the analyst estimated reserve value was nearly flat despite the 12% volume growth, and rated the stock a hold rather than a buy. She also noted that most of the additions were undeveloped, meaning the growth required future drilling capital the company had not yet budgeted. The company and its figures are invented.
Watch out
Common mistakes.
- Reading BCFE growth as value growth, when a shift toward cheaper gas can leave revenue flat even as equivalent volumes climb.
- Mixing up BCFE with barrels of oil equivalent, which expresses the same energy on the oil side by converting gas into barrels instead.
- Using conversion ratios other than the standard six thousand cubic feet per barrel without checking, since some reports apply slightly different factors.
Questions
People also ask.
What does BCFE stand for?
Billions of cubic feet equivalent. It combines natural gas with oil and liquids volumes by converting the liquids into the gas volume with the same energy content.
What is the conversion from oil to gas equivalent?
One barrel of oil is treated as roughly six thousand cubic feet of natural gas equivalent, based on their relative energy content.
Why can two companies with the same BCFE be worth different amounts?
Because oil typically sells for more per unit of energy than gas, the company with the richer oil mix usually earns higher revenue per BCFE.
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