Analysis Of Sedimentary Characteristics And Sand Body Geometry In ? Sand Group Of Zhong 30 Block Fuyu Oil Field

Songliao Basin is one of the largest petroliferous Basin in China.Be located in Fuyu III structure of Fuxin uplift zone of the south of Songliao Basin,the Fuyu oil field has planty of structures(700 structures have be explaned in 2004),its structure system is very complicated,the fault mainly stretch at SN-WS direction with ES direction in local area.Since the discovery of the world-renowned Daqing oil field in 1959,more than 40 oil field has been found in Songliao Basin,its oil and gas production has accounted for 1/3 of China's total production.Fuyu oil field is located in the urban and suburban distracts of Songyuan in Jinlin province,the insection delta of the first and the seconed Songhua river.With convenient highway and inland shipping,the region has relatively flat terrain and the ground elevation is about 135?150m.Fuyu oil field mainly production layer is Fuyu oil layer in the fourth section of Quantou formation and Quantou formation and Yangdachengzi oil layer in the third section of Quantou formation,with the keep water injection exploiting,Fuyu oil layer has entered the high water exploition stage,therefour,Yangdachengzi oil layer has been the mainly potential layer.Zhong 30 block is located in the central section of Fuyu oil field.The dissertation make full use of the data about the exist core,seismic,logging,testing ect,guided by the high resolution sequence stratigraphy,seismic stratigraphy,reservoir geology and petroleum and have obtained the following research results:?Based on sequence stratigraphic framework,we divid the V sand group into 3 group named D14?D15?D16,and the D16 also can be subdividde into secondary lower-cycle:D16-1 and D16-2.?Horizon calibration in Three-dimensional seismic data,the use of T2-1 layer by selecting different time window to extract the seismic attributes of each small layers,including total energy,root mean square,etc..Combined with core and logging data to identify every sedimentary microfacies,including the river stranded deposition,point bar,abandoned channel,crevasse-splays,natural levees,flood land,etc..At last analysis the plane distribution feature of sedimentary microfacies in every small layers comprehensively?On the basis of single sand body division,Studied the characteristics of the internal configuration in each small layers,analyzed the lateral accretion features of Point dam,Described the developmental scale of lateral accretion body quantitatively,Through the above researchs,we get the final conclusion that different types of lateral accretion layer and lateral accretion body affected by the deposition conditions clearly.