--> ABSTRACT: Comparison of the Results of China’s Petroleum Resources Assessed by the U.S. Geological Survey World Petroleum Assessment 2000 and the China’s National Petroleum Assessment 2007, by Liu, Chenglin; Che, Changbo; Zhu, Jie; Yang, Hulin; #90142 (2012)

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Comparison of the Results of China’s Petroleum Resources Assessed by the U.S. Geological Survey World Petroleum Assessment 2000 and the China’s National Petroleum Assessment 2007

Liu, Chenglin *1; Che, Changbo 2; Zhu, Jie 2; Yang, Hulin 2
(1) Geoscience, China University of Petroleum, Beijing, China.
(2) Strategic Research Center for Oil & Gas Resources of the Ministry of Land and Resources, Beijing, China.

This study compares the results of China’s petroleum resources assessed by the U.S. Geological Survey World Petroleum Assessment 2000 and the China’s national petroleum assessment 2007. The U.S. Geological Survey World Petroleum Assessment 2000 estimated that the mean undiscovered petroleum resources of China were respectively 12.12 billion barrels of oil and 85.79 trillion cubic feet of gas, which is much smaller than 107.38 billion barrels of oil and 692.13 trillion cubic feet of gas assessed by the China’s national petroleum assessment 2007. Six major factors (including petroleum resource classification systems, data sources, assessment scopes, unit divisions, assessment methods, and assessment parameters) contributed to the differences of these two assessments. Undiscovered petroleum resources did not include reserve growth estimates according to the definition of the U.S. Geological Survey World Petroleum Assessment 2000 while undiscovered resources of the China’s national petroleum assessment 2007 included estimates of reserve growth. The U.S. Geological Survey World Petroleum Assessment 2000 adopted much higher minimum field size than the China’s national petroleum assessment 2007 did, so the former only covered six Chinese basins while the latter evaluated 115 Chinese basins. For the same basins, unit divisions of the U.S. Geological Survey World Petroleum Assessment 2000 also differed from those of the China’s national petroleum assessment 2007 because of their different data sources, and exploration and exploitation experiences. In addition, different methods used by these two agencies affected their assessment results to some degree. From January 1996 to December 2009 (14 years), about 66% of the undiscovered oil resources and 121% of gas resources estimated by the U.S. Geological Survey World Petroleum Assessment 2000 were realized in nearly 50% of the 30-year forecast span (1995 through 2025). From January 2004 to December 2009, 14% of undiscovered oil and gas volumes estimated by the China’s national petroleum assessment 2007 were discovered in the six assessed basins, where reserve growth of discovered oil fields exceeded new-field discoveries while additions to gas reserves mainly came from new gas fields.
 

 

AAPG Search and Discovery Article #90142 © 2012 AAPG Annual Convention and Exhibition, April 22-25, 2012, Long Beach, California