Research On Hydrocarbon Forming Charecater Of Putaohua Formationin In Zhaoyuan-Taipingchuan Area

Zhaoyuan-taipingchuan area lie in north Songliao basin, across Sanzhao depression,Chaoyanggou terrace,Changchunling anticlinal zone,Binxian-Wangfu depression and Suihua depression, Putaohua formation is most important contains oil goal formation in this area center lower part to contain oil combines, based on the theories and means of sedimentology,sequence stratigraphy,petroleum geology and so on,from the fine research of sequence frame work, sedimentary facies,forming type, store condition, and generalize on hydrocarbon forming condition and host controlled hydrocarbon factor,pointed out new objects and orientation of exploration,had important instruction significance of hydrocarbon genesis and prediction of east Xujiaweizi.This article from the sequence reaserch obtains, the application sedimentology,high resolution sequence stratigraphy theory carries on the division to Putaohua formation of east Changyuan,had established sequence framework, And research through sedimentary microfacies, the total features of sedimentary facies of east Changyuan is distributied in this area is : sedimentary facies is distributed as a circle, sedimentary facies systerm is delta plain-- delta in-ner front -delta outer front.-lake facies combination or plain siltation - lake facies combination in turn from outer uplift to central depression , plain siltation is develops in east and south; delta front is wide , distributary channel and subaqueous distributary channel are develop, distributary channel is distributed as a net on plane ,subaqueous distributary channel is distributed as a dendritic on plane.Based on Putaohua formation structure,sandstone, reservoir-seal combination and so on studies, summarized the host controlled hydrocarbon factor of Yushulin area,in forming law under the instruction,had forecast the development zone peripheral the advantageous clear area.