Oil and Gas in Offshore Tracts: Estimates Before and After Drilling

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Science  03 Aug 1979:
Vol. 205, Issue 4405, pp. 489-491
DOI: 10.1126/science.205.4405.489


Estimates of volumes of recoverable hydrocarbons underlying offshore tracts are made by the U.S. Geological Survey prior to the sale of leases and after drilling on those leases. Comparisons of these estimates show a moderate positive correlation and no evidence for relative bias, although the precision of the predictions is quite limnited.