Title: APPLICATION OF SEQUENCE STRATIGRAPHY TO PETROLEUM EXPLORATION:AN EXAMPLE FROM THE CRETACEOUS IN CHAGANNUOER SAG,THE HAILAER BASIN
Abstract: Wide application of sequence stratigraphy has made great contribution to petroleum exploration of the large oil and gas fields in China.Based on the theories and methods of sequence stratigraphy and through integration of core,log and seismic data,the Early Cretaceous in Chagannuoer sag of the Hailaer basin is recognized as a supersequence.It was formed during fault subsidence and can be divided,from bottom to top,into 5 third-order sequences.The factors influencing hydrocarbon pooling are studied in detail within the framework of sequence stratigraphy,eight reservoir types are predicted,and three favorable plays for exploration are identified.The alluvial fans and fan deltas deposited in fault step zones and slope zones,and the sublacustrine fans deposited in the transgressive system tract of the supersequence are favorable for hydrocarbon accumulation,thus are targets of exploration.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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