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《Journal of Daqing Petroleum Institute》 2009-04
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Reservoir heterogeneity of base-level cycle in Chaoyanggou Oilfield of the Songliao Basin

YU Sheng-yun1,MA Xing-qiang2,JIANG Hai-ying3,ZHANG Ying3,ZHANG Li-dong3(1.College of Geosciences,Daqing Petroleum Institute,Daqing,Heilongjiang 163318,China;2.Development Enterprise Section of Jilin Oilfield Corp.Ltd.,Songyuan,Jilin 138000,China;3.Exploration and Development Institute of Jilin Oilfield Corp.Ltd.,Songyuan,Jilin 138000,China)  
By using high resolution sequence stratigraphic theory,ranking sequence stratigraphy is classified in the target area.There are three kinds of sequence stratigraphics in the area.They are short-term base-level cycle,middle-term base-level cycle and long-term base-level cycle.41 short-term base-level cycles,7 mid-term base-level cycles(MSC1,MSC2,MSC3,MSC4,MSC5,MSC6 and MSC7)and 2 long-term base-level cycles(long-term base-level descending half cycle—LSC1 and long-term base-level ascending half cycle—LSC2) are classified in the target research area.Then reservoir heterogeneity is studied for ranking sequence stratigraphy,the conclusion is obtained that reservoir heterogeneity of middle and shor-term base-level cycles in LSC1 is weak,that of middle and shor-term base-level cycles in middle and underside of LSC2 is strong and middle-term base-level cycles are strong on transition plane of descending and ascending in middle-term base-level cycles.
【CateGory Index】: P618.13
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