【摘要】 针对济阳坳陷第三系地层油藏岩性、物性、含油性钻前预测难度大,成藏条件钻前预测可靠性程度低,地震描述技术存在很大的不确定性等问题,分析了三级不整合地层油藏的相关地震特性,并根据不同序级的不整合特征,建立了针对性的精细地层油藏配套描述技术,形成了以振幅属性、地震相、约束反演为主的一级不整合地层油藏描述技术和以高精度层序分析、古地形分析、频谱成像和叠前反演技术为主的二、三级不整合地层油藏描述技术,提高了地震预测准确度。通过实际应用,胜利油区"十五"以来地层油藏累积探明石油地质储量约达2×108t。更多还原

【Abstract】 There are great difficulties in lithology,physical properties and oil-bearing probability prediction,low reliability in predicting pool-forming conditions before drilling,and great uncertainty of seismic description techniques in Tertiary stratigraphic reservoirs in Jiyang Depression. Related seismic characteristic of three grades unconformity stratigraphic reservoirs were analyzed. Ac-cording to the unconformity characteristics in different grade,the fine reservoir description techniques were built up which include the grade 1 unconformity stratigraphic reservoirs description by means of amplitude attribute,seismic facies and constraint inver-sion techniques,and grade 2-3 unconformity stratigraphic reser-voirs description by means of high accuracy sequence analysis,palaeotopography analysis,spectrum imaging and prestack inver-sion techniques. The seismic prediction accuracy has been highly improved. The application of these techniques has effectively pro-moted the stratigraphic reservoir prospecting in Shengli explora-tion area during the Tenth Five-Year Plan,the proved accumula-ted reserves of the stratigraphic reservoirs reaches 2×108t.更多还原