Shale source rocks a game-changer due to 8-to-1 resource potential

P.K. Meyer Rowayton, Conn. One way to get a handle on the enormity of potentially producible hydrocarbons contained in shale formations is to estimate how much recoverable oil and gas remain within the source rocks in which they were generated as compared to how much producible oil migrated into "conventional" reservoirs. Applying this illustrative methodology indicates that for every barrel of crude oil in conventional reservoirs that constitute the bulk of global crude oil reserves of 1.3 trillion bbl there are 8 bbl of potentially producible oil equivalents remaining in the source rock that generated that 1 bbl of conventional reserves (Table 1). While this admittedly simpl...

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