Reaserch On The Seismic Inversion Prediction Of The Seartu And Putaohua Oil Groups In The West Of South No.1 Area In Daqing Oilfield

Along with conventional oil reservoir reserves reducing,the work center,oil and gas exploration gradually shifting to find subtle reservoirs and thin interbed reservoir fine description of reservoir and underground distribution,which requires the corresponding exploration technology continues to improve.Seismic inversion technology can realize the complementary advantages of logging and seismic data,and improve the vertical resolution of 3D seismic data.It can adapt to more and more cimplicater geological environment and exploration tasks.There are many types of sedimentary reservoir in the west of the south NO.1 area,and the prediction accuracy is low.How to improve the accuracy of reservoir prediction is an urgent problem to be solved.This paper first established high-resolution sequence framework,analysis the development characteristic of reservoir sedimentary microfacies and study the reservoir basic geological conditions such as channel width,interlayer condition,sandbody size.Accord to the actual conditions of the study area,costrained sparse pulse joint geostatistical inversion.Based on this,a qualitative fusion method of seismic seismic inversion based on ancient channel guidance.By using fractal interpolation and fractal sampling,the slice with the same trend is selected to carry out the intersection fusion,which improves the prediction effect of the reservoir,and the inversion reliability is better.The purpose of this paper is to improve the prediction accuracy,improve the oilfield development effect and improve the injection production relationship.Based on inversion results,the distribution of channel sand bodies of 5 oil groups in the west of the south NO1.area of the study area is described,and the channel size of the target area is classified.Basedon this,the prediction accurary is improved by combining the scale of each channeland the ratio of river to non channel.In addition,combined with the results of seismic inversion the river boundary,channel width and channel combination patterns are characterized.The research results provide a strong support for improving the oilfield development effect and improving the injection production relationship.