If observed oil and gas field size distributions are obtained by random samplings, the fitted distributions should approximate that of the parent population of oil and gas fields. However, empirical evidence strongly suggests that larger fields tend to be discovered earlier in the discovery process than they would be by random sampling. Economic factors also can limit the number of small fields that are developed and reported. This paper examines observed size distributions in state and federal waters of offshore Texas. Results of the analysis demonstrate how the shape of the observable size distributions change with significant hydrocarbon price changes. Comparison of state and federal observed size distributions in the offshore area shows how production cost differences also affect the shape of the observed size distribution. Methods for modifying the discovery rate estimation procedures when economic factors significantly affect the discovery sequence are presented. A primary conclusion of the analysis is that, because hydrocarbon price changes can significantly affect the observed discovery size distribution, one should not be confident about inferring the form and specific parameters of the parent field size distribution from the observed distributions.
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American Petroleum Institute, 1985, Basic Petroleum Data Book: Washington, D.C., American Petroleum Institute.
Arps, J. J. and Roberts, T. G., 1958, Economics of Cretaceous Oil on the East Flank of the Denver-Julesburg Basin: Amer. Assoc. Petr. Geol. Bull., v. 42, p. 2549–2566.
Attanasi, E. D. and Haynes, J. L., 1984, Economics and Appraisal of Conventional Oil and Gas in the Western Gulf of Mexico: J. Petr. Tech., v. 36, p. 2171–2180.
Attanasi, E. D. and Drew, L. J., 1985, Lognormal Field Size Distributions as a Consequence of Economic Truncation: Math. Geol., v. 17, p. 335–351.
Drew, L. J.; Schuenemeyer, J. H.; and Bawiec, W. J., 1982, Estimation of the Future Rates of Oil and Gas Discoveries in the Western Gulf of Mexico: U.S. Geol. Sur. Prof. Paper 1252.
International Oil Scouts Association, 1986, International Oil and Gas Development Part II, Production: v. LIII-LIV, Austin, Texas, 906 p.
Marquardt, D. W., 1963, An Algorithm for Least-Squares Estimation of Nonlinear Parameters: Soc. Ind. Appl. Math., v. 11, p. 431–441.
NRG Associates, 1985, Significant Oil and Gas Fields of the United States Data Base: Colorado Springs, Colorado.
Pindyck, R. S., 1974, The Regulatory Implications of Three Alternative Econometric Supply Models of Natural Gas: Bell J. Econ. Management Sci., v. 5, Autumn, p. 633–644.
Platt's Oil Handbook and Oilmanac, Annual, McGraw Hill, New York.
Schuenemeyer, J. H. and Drew, L. J., 1983, A Procedure to Estimate the Parent Population of the Size of Oil and Gas Fields as Revealed by a Study of Economic Truncation: Math. Geol., v. 15, p. 145–161.
U.S. Department of Energy, 1984, Competition and Other Current Issues in the Natural Gas Industry: DOE/EIA-0489, 111 p.
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Drew, L.J., Attanasi, E.D. & Schuenemeyer, J.H. Observed oil and gas field size distributions: A consequence of the discovery process and prices of oil and gas. Math Geol 20, 939–953 (1988). https://doi.org/10.1007/BF00892971
- oil and gas field size distributions
- resource appraisal