For almost a decade, Tony Sanchez III was the epitome of a shale-boom CEO—furiously drilling oil wells, piling on debt and hunting quail and nilgai with fellow executives near his family’s ...

GREEN RIVER - Scientists estimate there's up to 1.5 trillion barrels of oil within shale formations that could be recovered in northwest Colorado, southwest Wyoming and northeast Utah.

usually called "oil shale," which is found in huge volume in the Green River Formation of western Colorado, Utah, and Wyoming. That is actually a crude oil precursor known as kerogen, which would ...

Oil well re-fracking is on the rise in the United States. Re-fracking of existing shale wells can cost up to 40 percent less than drilling a new well. Re-fracking could also help U.S. shale ...

The falling output rate over time highlights a fact of life for US shale explorers: oil wells are most prolific in early months of production, with gushers quickly turning to trickles.

For almost a decade, Tony Sanchez III was the epitome of a shale-boom CEO—furiously drilling oil wells ... companies have suffered lately, green energy continues to attract investment.