... and by-products can be produced from an entity. In the evaluation of an exploratory land, where reserves have not been discovered, several reserve estimates may have to be evaluated; whereas, in the evaluation of reserves, the amount f hydrocarbons to be recovered may be fairly well established. The second step...

... in the U.S. petroleum society supply forecasting standardization discussion reserves classification reserve estimate standardize asset and portfolio management 40th annual technical meeting reserves replacement us government technical meeting consideration diversity information crude...

... tries to match the appropriate expenditures to given discoveries. Moreover, since the initial reserves estimate typically increases as the find is developed, the true size of the discovery is often not known with any degree of certainty until several years afterward. These factors make an initially...

... billion cubic metres (90.7 TCP) at year end 1979. The influence of economics and technology on this increase is apparent as follows (4): during 1973 some 85 billion cubic metres (3.0 TCP) of marketable gas were added to the reserve estimates as a re3ult of recovery factor adjustments due to higher gas...