Oil geologic anomaly in the north edge of the Middle and Lower Yangtze areas based on the evidence weight method

Abstract

The study of oil geologic anomalies is a new area of petroleum geology. Using the evidence weight method, we selected tectonic, hydrocarbon abundance of source rock, thickness of source rock, level of reservoir, complexity of reservoir, degree of mineralization of formation water as the evidence layer to evaluate the favorable zones of pool forming in the Lower Paleozoic in the north edge of the Middle and Lower Yangtze areas. Finally, we integrated our results with the petroleum geology of this area and concluded that the North Sichuan basin, the western area of Hubei and the eastern area of Chongqing and parts of the Lower Yangtze are the most profitable areas for exploration in the north edge of the Lower and Middle Yangtze areas.

References

1. Bonham-Carter G F Agterberg F P 1990 Weights ofevidence modeling: A new approach to mapping mineral potential, statisticalapplications in the earth scienceOttawaGeological Survey of Canada
2. Cheng R H Bai Y F Li Y B 2004 Evolution of paleogeography of Lower YangtzeareaJournal of Jilin University (EarthScience Edition)34(3)367371 (in Chinese with English abstract)
3. Liang X Ye Z Ma L et al. 2004 Exploration levels and comprehensiveevaluation of petroleum preservation units in marine strata in southernChinaMarine Origin Petroleum Geology, 9(1/2)5976 (in Chinesewith English abstract)
4. Liang X Ye Z Xu K D et al. 2005 Marine petroleum supersystems insouth ChinaNatural Gas Industry25(2)15 (in Chinese withEnglish abstract)
5. Wen L Hu S Y Tian H Q 2001 A study on hydrocarbon source rock ofCambrian in Yangtze area, ChinaNorthwesternGeology34(2)6774 (in Chinese with English abstract)
6. Zhao P D Chi S D 1991 A preliminaryview on geoanomalyEarth Science–Journalof China University of Geosciences16(3)241248 (in Chinese with Englishabstract)
7. Zhao P D Tang J Chen J P et al. 2002 Oil geologic anomaly and non-traditionalpetroleum resource exploration researchGeology and Prospecting38(2)15 (in Chinese with English abstract)
8. Zhou L Q Yang S L Zhang H 2002 Characteristics of oil and gas reservoirsystems in China's main marine residual basinsChina Petroleum Exploration7(3)3138 (in Chinese with English abstract)
9. Zhou Y 2001 The sequence pattern of the favorable region for marineoil and gas pool in the middle Yangtze plateHubei Geology & Mineral Resources15(4)1219 (in Chinese with Englishabstract)