Abstract:

Based on the geological condition,reservoir rock distribution and seismic reflection characteristics of the lower member of the Jiufutang Formation, Upper Jurassic in Jiaonan Structure, LudongDepression,it is proposed to take the lower member of the formation as the unit to make reservoir prediction of large section sedimentary model by velocity spectrum processing; to take sandstone set as the unit to make comprehensive reservoir prediction by seismic.data processing F to take interwell fractal analysis as theoritical basis and combine it with geostatistics to make individual sandbody predicting. The above memtioned prediction methods were adopted to predict hydrocarbon reservoirs and their distribution. It is constered that oil pools in the higher part of the structure are controlled by the strueture but that in the raking side possess the property of lithologic-structural pools. The sandbodies in the north side of Jiao-2, Jiao-12, Jiao-15 well-blocks and the southwest side of Jiao-2, Jiao-15 well-blocks are rather thick and have favourable physical features and hydrocarbon trapping condition.