A review of the uncertainties in estimates of global oil resources

摘要: This paper discusses the uncertainties that exist in estimating remaining ultimately recoverable resources of oil globally including reasons for these and, where possible, how they may be mitigated, resolved, or reduced future assessments. The encompassing and ambiguous terms ‘conventional oil’ ‘unconventional are disaggregated into numerous categories within each. These investigated individually order to identify specific by which influenced affected. A key finding is there intrinsic every category oil. Future assessments global projections production should hence acknowledge issues, explain assess effects have on results, present ranges any estimates produced provided. An initial estimate made technically light tight often called ‘shale oil’: found low permeability shale formations requiring stimulation extracted. estimated range a scale between 150 508 billion barrels with central 278 barrels.