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《Journal of Changchun University of Science and Technology》 2003-04
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THE CHARACTERISTICS AND EVOLUTION OF THE PALEO-TEMPERATURE DURING FORMATION PROCESS OF OIL- GAS IN DAGANG EXPLORATION AREA

XU Xuechun1, ZOU Haifeng1,GAO Fuhong1 YANG Yongchang2,SUN Xiaoming2,XIAO Dunqing2,WU Zhanguo2 (1.College of Earth Sciences,Jilin University, Changchun130026,China; 2.Dagang Oil Field Institute of Geological Exploration and Development, Dagang Oil Field,Tianjin 300000,China)  
Dagang exploration area is located in the hinterland of Bohai basin, including Huanghua depression and its surrounding areas. According to the features of tectonics, this exploration area can be classified into three sectionsnorth, middle and south regions. The research results on the temperatures determined from the fluid inclusions showed that the paleo-temperature experienced three periods change, which was corresponding to that of the migration and accumulation of oil-gas. The paleo-temperature of the individual section had a slight difference, which was caused by the activities of volcanoes and hydrothermal fluids, as well the emplacement of magmas and tectonic process. The studies on the paleo-temperature characteristics revealed that the change of the paleo-temperature was very different. The paleo-temperature of the first period in south area is generally higher than that in north area, and the paleo-temperature in west area is lower than that in east area.The paleo-temperature of the second period in west area was higher than that in east area and north area is generally higher than south area. The change of the paleo-temperature was not very obviously in the third period and tended to be stabilized. Generally speaking, the paleo-temperature varied with time and had a the tendency from intensive to weak. The change of the paleo-temperature was closely related to the tectonic background of the area. It was an important dynamic factor controlling the migration and accumulation of oil-gas.
【Fund】: 国家973项目(G1999043212);; 教育部博士点基金项目(20010183008);; 大港油田集团公司项目
【CateGory Index】: P618.13
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