The bakken field may well hold more than people think , and ohio 's utica shale has barely been tapped .
巴肯油田的产量有可能超出人们的预测，而且俄亥俄州的尤蒂卡页岩几乎还未被染指过。
This has encouraged gas producers to scurry after oil in liquid-rich shale beds such as the bakken in north dakota .
这鼓舞了煤气生产商紧追页岩层丰富的业态石油，例如北达科他州的巴肯。
Within a few years the bakken and other shale beds could be producing up to 3m barrels of oil a day , reckon optimists .
从乐观的角度，用不了几年巴肯和别的页岩层就能够每天生产3百万桶油。
However , the eia specifically includes oil from north dakota 's bakken shale deposits in its calculations , which in recent years have become a significant source of unconventional crude .
