By mmillikin A new study finds that as some of the world’s largest oilfields age, the energy required to keep them operating can rise dramatically even as the amount of petroleum they produce drops. Failing to take the changing energy requirements of oilfields into account can cause oilfield managers or policymakers to underestimate the true climate impacts, Stanford scientists warn.
Mohammad Masnadi and Adam Brandt used decades-long time-series data from twenty-five globally significant oil fields (>1 billion barrels ultimate recovery) to model greenhouse gas (GHG) emissions from oil production as a function of time.Depletion requires increased energy expenditures in drilling, oil recovery, and
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