No economically recoverable oil was found at this depth.

However, like other metals, it is seldom sufficiently concentrated to be economically recoverable.

Further, reserves are resources that are economically recoverable under existing conditions.

According to the latest government estimates, the mean estimate of economically recoverable oil in the plain is 3.2 billion barrels.

Even if they are accurate, such estimates often gloss over how much gas is economically recoverable.

Oil reserves are oil that is technically and economically recoverable.

Official estimates of "economically recoverable" oil are in fact much lower than 15 billion barrels.

Oil and gas on the land, the August 2000 study found, have not yet been "determined to be economically recoverable."

The estimated that 95% of this economically recoverable solar energy (in 1993) was from burning biomass.

Oil reserves are the amount of technically and economically recoverable oil.