Study On Seismic Prediction Technology Of Carbonate Reservoir In Gucheng Area

Based on the analysis of the characteristics of different types of carbonate reservoirs,this paper studies the seismic prediction technology of carbonate reservoirs by means of petrophysical analysis,model forward modeling,seismic inversion and seismic attribute optimization,carries out dolomite reservoir prediction and comprehensive evaluation in Gucheng area..The carbonate reservoir types in Gucheng area are mainly dolomite cavitation and limestone reservoirs.The results of the petrophysical analysis and forward modeling analysis show that the seismic response characteristics of the reservoir are strong amplitude and low frequency characteristics.By fully demonstrating the applicability of seismic attribute technology,geophysical inversion technique,coherent and coherent reinforcement technique,curvature property analysis technique,waveform analysis technique and frequency division interpretation technology in prediction of carbonate reservoirs in Gucheng area,The effective earthquake prediction method is optimized,and the reservoir prediction is carried out.The results show that there are three reservoirs in the formation of yijianfang.One is about 60km2 in the western part of the research area.Another is about 71km2 in the middle of the research area.The third one is about 68km2 in the eastern part of the work area.And The results show that Yijianfang Formation is mainly a fractured reservoir of reef beach in carbonate platform.The reservoirs in the lower member of the Yingshan Formation are mainly pore-fractured reservoirs.The fractures are mainly developed in the middle and west of the working area,and are distributed in the north-south zone,with an area of about 106km2 and 48km2 respectively.There are two reservoir development zones in the Penglaiba Formation,which are in the north-south zone,with an area of 116km2 and 91km2 respectively.The Cambrian developed four quarries.The reflective features are clear.They stack up and down.Their sizes are different.They are mainly formed in the middle Cambrian and the lower Cambrian.Based on the research results of structure,deposition,reservoir and other aspects of Gucheng low uplift,the analysis of the basic oil and geological conditions,the law of oil and gas accumulation,the drilling analysis and so on,it is concluded that the Gucheng6 well where the high barrier block where the high barrier block is the preferred area of drilling,the Gucheng7 well and the Gucheng8 well have got a better oil and gas show.In addition,we optimize the three favorable targets proposed to deploy pre-exploration wells in the differentareas,looking forward to continue to find,expand the gucheng low uplift oil and gas exploration scene.