Fine Structure Interpretation And Reservoir Predictionof Fuyu Reservoir South Block Of Anda West In Sanzhao Area

Most of the seismic data in the Sanzhao region are aimed at deep layer collectio n.In the early exploration and deployment of Fuyang oil layer,it is found that the shal low interpretation results of the old data have been unable to meet the needs of the current fine exploration.Therefore,this paper carried out the“Fine Structure Interpretatio n of Fuyu Reservoir South Block of Anda West in Sanzhao Area”.In order to inversi on on the basis of three-dimensional seismic data interpretation,on the basis of drilling lithology,electrical property,cycles and thickness characteristics,using the principle of s equence stratigraphy,combined with seismic,through vertical subdivision of Fuyu layer five fine reservoir group established Andaxi(South Block)Fuyu formation sequence te ctonic framework.In the isochronous stratigraphic framework of fine 3D interpretation,s mall fine fault recognition,the implementation of the Andaxi(South Block),the structur al characteristics of fracture.Through the seismic reservoir physical properties and reser voir geophysical parameters for optimization analysis,the geological characteristics of t he study area of seismic attributes and reservoir inversion method,carried out Andaxi(South Block)fine reservoir prediction in Fuyu reservoir of river sand,fine descriptio n of reservoir spatial distribution characteristics.Through the study of structure,depositi on and reservoir,combined with favorable reservoir,reservoir physical property and oil-b earing result,the evaluation and optimization of favorable "desserts" area are carried ou t.The following conclusions and recognition have been obtained:No.1.,The fracture of the structural control of Ming Dynasty obviously,local struct ural plane zonation.No.2.By drilling,seismic and seismic attribute reservoir qualitative analysis that the study area of Fuyu river reservoir sandstone reservoir showed strong and low amplit ude wave group characteristics,less than the tuning thickness,the thickness of sand bod y,the stronger the amplitude.No.3.Fuyu reservoir is mainly developed distributary channel,delta plain,delta front and shallow lake deposition,thin sand,banded,poor continuity,relatively homogeneous re servoir,strong heterogeneity,vertically,the development condition of sand bodies are not the same,Fuyu oil reservoir mainly for the low porosity and low permeability.No.4.Due to the source control in the northern direction,the channel is close to t he north to the south,and the channel intersection and bifurcation are more.The channel sandstone is thin,banded,continuous,and the reservoir development is relatively heter ogeneous,and the heterogeneity is strong.NE and NW trending fracture tight zones are favorable channel for hydrocarbon migration.Oil and gas are mainly distributed in the upper part of Fuyu oil layer and controlled by fault tight zone.The main reservoir ty pes in Fuyu are fault block,fault nose and fault lithologic reservoir.No.5.According to the qualitative and quantitative prediction results of structure a nd reservoir,5 oil-bearing formations are divided into 38 favorable reservoir areas in t he Fuyu oil reservoir of South Block(South Block),and the accumulative area is 26 km~2.