02478nmc a2200301 4500 20260520005648.0 260224s xxu CD W938 1 0013960 WPC (16th.) PETROLEUM SYSTEMS AND EXPLORATION PROSPECT OF MESOZOIC IN ORDOS BASIN, CHINA 12/09/06 ; 26/08/2003 2 p. Resumen del autor, extraído del trabajo. The Ordos basin is the third largest sedimentary basin in China. It is famous for the largest natural gas field of Paleozoic and abundant oil resources of Mesozoic in China. In this study, mudstones, coal rocks and oil samples from the Triassic Yanchang Formation and the Jurassic Yan’an Formation in the basin were analyzed geochemically in detail. The abundance, property and thermal maturity of organic matter indicate that the Yanchang Formation has a larger and stronger hydrocarbon-generating potential than Yan’an. Burial history and thermal history study indicate that the critical moment is 105Ma..The time extent of oil generation, migration and accumulation is from 110 Ma through 100 Ma.. Oil –rock correlations indicate that the oil reserved in the Yanchang Formation has the same geochemical properties with the oil reserved in the Yan’an Formation, and all of the oils have the same and only source rock of the Triassic Yanchang Formation. Based on the basic concepts of petroleum system, fully considering the characteristics of the geological and sedimentary background of the Ordos basin, two petroleum systems of Mesozoic in the basin were classified. They are Northeast Yanchan - (Yan’an+Yanchang) System (!) and Southwest Yanchang - (Yan’an+Yanchang) System (!). After a comprehensive study of petroleum geochemistry and geology, three target areas for the next exploration of Mesozoic in the basin were suggested. v. 2, p. 332-333 CONGTP Su, Xing 9665 Liu, Huqing 9666 Zhang, Chengjun 9667 Wanyan, Rong 9668 Northwest Research Institute of Geology, CNPC 9669 World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary, Alberta, Canada) 34 Liu, Huqing 9666 Zhang, Chengjun 9667 Wanyan, Rong 9668 Northwest Research Institute of Geology, CNPC 9669 Su, Xing 9665 133488 133488 0 0 0 0 204407 BAAB BAAB CD W938 1 0013960 2026-03-04 200005965 0 CD W938 1 0013960 200005965 2026-03-04 14:03:18 2026-03-04 ARCHIVO