Sequence Stratigraphy Research In Xing'anling Group Of SudeerteTectonic Zone Of Hailaer Basin

Based on the recent theory and method of Sequence Stratigraphy, Sedimentology,Biostratigraphy and Seismic Stratigraphy, it uses seismic, logging and core information toanalyze and research the sequence formation framework and sedimentary facies. The resultoffers the dependable evidence for sequence demarcation, and it is significance to explorationactivity and development in future.According to seismic, compound logging, logging, core and paleontology information, thispaper classifies Xing'anling group of Bei16 well field into three tertiary sequence, sixquarternary sequence and seventeen five-stage sequence by using interwell comparable principle,and describes the characteristics of each sequence and systems tract.This paper also uses new theory, concept and method, combines with logging interpretationand seismic information interpretation to identify and elaborate three sedimentary facies andfour sedimentary subfacies of Xing'anling group by observing and describing core of Bei16 andDe106-203A, and then draws and elaborates the sedimentary facies through-going ofXing'anling group.Based on roundly analyzing and researching the sedimentary facies, it generalizes thesequence sedimentary models of region of research. Those models are: sequence MSC1lowstand systems tract : mainly deposits progradation offshore subsea apron;sequence MSC1transgressive systems tract: mainly deposits retrogradation offshore subsea apron;sequenceMSC1 hightstand systems tract: mainly deposits progradation offshore subsea apron;sequenceMSC2 hightstand systems tract: mainly deposits progradation fan delta frontal subfacies;MSC3transgressive systems tract: mainly deposits retrogradation fan delta frontal subfacies;MSC3hightstand systems tract: mainly deposits progradation fan delta frontal subfacies.