> How much time will it be over $30 before the shale producers start up again? I think that depends on how expensive it is to "start up again." If it costs $1

> How much time will it be over $30 before the shale producers start up again? I think that depends on how expensive it is to "start up again." If it costs $10mil to turn the taps on, then it won't be economic to do so unless the operators expect oil prices to stay above the $30 level long enough to make up the startup cost in operating profit. From that perspective, an oil cartel could keep unconventional oil out of the market by holding out a credible threat that they'll crash the prices if ever unconventional oil becomes too big.