The Sedimentary Microfacies Study Of Fuyu Reservoir In Shuangcheng District And The Control Of Distribution Of Favorable Sand Reservior

With the continuous improvement of Fuyu oil reservoir exploration,constantly enrich and improve all kinds of data,especially the encryption of seismic data,the increase of 3D work area.At the same time all kinds of new oil and gas geological theory and exploration techniques such as high resolution sequence stratigraphy,fine sedimentary microfacies analysis,seismic reservoir prediction technology are also improving fast.With the help of these new materials,new theories and new technology conditions,we can predict favorable reservoir distribution,points out favorable exploration zone through high-frequency sequence stratigraphy and sedimentary system and sand body distribution,at the same time it is of great significance for the deployment and submitting of oil and gas reserves to the Shuangcheng area of daqing placanticline in Fuyu reservoir oil and gas exploration.Base on the methods of high resolution sequence stratigraphy,sedimentary system analysis,seismic sedimentology and seismic reservoir prediction methods,the present paper carried out high resolution sequence stratigraphic division and established the high resolution sequence stratigraphy framework of Fuyu oil layer of Shuangcheng area.Based on this,by conducting the combination of well and Seismic Data and seismic sedimentology study,we compiled the large scale plane distribution of sedimentary facies of Shuangcheng area of daqing placanticline,reveals the sequence stratigraphic framework and its space distribution law of sedimentary microfacies.We also anatomised distribution of reservoir sand body,each thin layer in fuyu oil layer of Shuangcheng area and predicted the favorable reservoir sand body distribution,and thus worked as the geological support for the oil and gas exploration in Fuyu reservoir of Shuangcheng area.This project has made the following main understanding and conclusion: First,we established the identification of high frequency sequence interface in Fuyu oil layer of Shuangcheng area,set up the high resolution sequence stratigraphic framework,and established uniform layered scheme and hierarchical database in Fuyu oil layer of Shuangcheng area.The second is to find out the main sedimentary microfacies type of the Fuyu oil layer in Shuangcheng district,and through the combination of Well-Seismic Data combination and multi-attribute comprehensive analysis,it reveals the distribution law of sedimentary microfacies in Shuangcheng area.Third is to finish mapping in fuyu reservoir sedimentary facies of Shuangcheng area,establish the characteristicsin of fuyu reservoir sedimentary microfacies identification and sedimentary development model,and summarizes the sedimentary evolution rule in Fuyu oil layer of Shuangcheng area.Finally,the distribution prediction of favorable reservoir sand body is carried out in Shuangcheng district,and also pointed out the distribution law of favorable reservoir sand body.