The Research For Distribution And Prediction Of Fuyu Oil Layer And Reservoir Characteristics In L8 Block Of Chaoyanggou Terrace

Fuyu oil layer as a fluvial depositional system in Chaochang area,reservoir heterogeneity is obvious,sand body with small size distributes alternately,and difficult recovery of remaining hydrocarbon.It is necessary to carry out the L8 block integration of well logs and seismic data forecasting method of fine sand body,improve drilling rates narrow river channel sand body,in order to improve the prediction accuracy and understanding of the subsurface reservoir sand body to guide the effective development of peripheral oilfields of Daqing Oilfield.Papers are guided by high-resolution sequence stratigraphy,modern sedimentology,seismic sedimentology and reservoir geology,from the full use of sub-drilling,logging,3D seismic data on Fuyu oil layer in the L8 Block of Chaoyanggou terrace sedimentary time unit to carry out fine stratigraphic correlation,micro facies,reservoir heterogeneity,forecast of reservoir distribution and favorable area prediction.Papers on the region's 42 sedimentary time units fine-grained stratigraphic correlation,was established isochronous stratigraphic framework,do research on the distribution of plane depositional facies,vertical evolution research,identify three kinds of sub-facies,10 micro facies on the basis of stratigraphic correlation;By use of attribute analysis,post-stack geo-statistics inversion technology for fine reservoir prediction and research,analysis plane distribution of the single stage riverway,the border relations and communication of single stage riverway,and the auxiliary guidance to amend the original logging sedimentary micro facies figures,including extending the length of the stage riverway sand body,direction,shape,continuity,combination of form and summarized the different types of sand reservoir characterization methods.Combined with previous research,do research on the phased heterogeneity in plane,interlayer and layer.Through previous research,in controlling rule on oil distribution and forming patterns in the guide,find out the L8 block main oil control factors,lithology(single sand body)and structure(fault),as a basis,Fuyu oil layer preferably the eight favorable reservoir area in which four fault-lithologic reservoirs,four lithologic reservoirs in L8 block.