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Study on the Source and Migration of Oil and Gases in the Beier Depression in the Hailaer Basin

HUO Qiu-li1,2, WANG Zhen-ying2, LI Min2，FU Li2，FENG Da-chen3   

  1. 1.Geoscience College，Daqing Petroleum Institute, Daqing,Heilongjiang 163318,China;2.Exploration and Development Research Institute， Daqing Oil Field Company Ltd, Daqing,Heilongjiang 163712,China;3.Yushulin Oilfield Development Company Limited of Daqing,Zhaodong,Heilongjiang 151100,China
  • Received:2005-08-17 Revised:1900-01-01 Online:2006-05-26 Published:2006-05-26
  • Contact: HUO Qiu-li

Abstract: Being hydrogenrich (mainly type II) and mature, the mudstone in the Nantun Member in the Beier depression served as the main source rock for oil and gases in the area while the Damoguaihe Member is the secondary source rock. These source rocks are mainly distributed in the western Beier sag and the central Aonaohai sag. Comparison of the crude oils in the Beier depression reveals their similar biomarkers and other features, indicating their similar sources. The correlation of oil to rock shows that the oil was mainly generated from the source rock in the Nantun Member. Hydrocarbon migration direction is studied using the maturity parameters of the biomarkers and the indexes of the pyrrolic nitrogen compounds. The migration of oil in the Suderte tectonic belt was from west to east, the oil in the Huhenuoren tectonic belt came from the source rock in the north of the west Beier sag. Vertically oil migrated from the lower to the upper levels. The migration channels in the Beier depression are mainly unconformities and faults. Both sides of the faults are favorable area for exploration.

Key words: Hailaer Basin, Beier depression, oil source, oil migration

CLC Number: 

  • P618.130.1
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