Research On Sedimentary Characteristics Of Fuyu Reservoir In Yu Dong Area

As the development of oil and gas, densifical oil has been found in Daqing oilfield. The Fuyu Reservoir has the batter condition for densifical oil is being the primary development layer in the Northern part of Songliao Basin. For the above situation, this research On the basis of the drilling date, 3D seismic project and logging data, study the sedimentary characteristics of Fuyu Reservoir in YuDong Area. In this studying process, conduct sequence stratigraphic partition and comparison of Fuyu reservoir, established stratigraphic framework.On the basis, study the sedimentation facies of Fuyu Reservoir in YuDong Area. Then predicting oil and gas promsing zone.Study on the hundreds of well drilling data, fall together the seismic section plane,logging date of Fuyu reservoir, according to the contrast principle for geology background,the Fuyu Reservoir has been classified into three reservoir group-FI,FII,FIII,and fuether divided into six layers. Based on the detailed study of stratum thickness,sandstone thickness,we find out the direction of the source. Based on the detailed study of rock colour sedimentary structure and logging data, promulgated the sedimentary characteristics of Fuyu Reservoir, sedimentary evolvement regular pattern, sedimentary system type and distribute characteristics. The studied area is shallow water delta facies and it is classified into two sedimentary sub-facies: delta plain and delta fron, which fuether divide into ten types micro-facies. Detailedly describe the distribution characteristic of the sedimentary micro-facies and sand body, then established sedimentation model of Fuyu Reservoir in YuDong Area.Studying the sedimentary characteristics aim to predict oil and gas promsing zone.Based on the study of sedimentation facies, we analyze the relationship between sedimentary and oil and gas distribution, fuether study the distribution pattern of hydrocarbon. It provide the significant theoretical guidance for predicting and optimizing oil and gas promsing zone,in order to explore and develop oil and gas.