【摘要】 利用常规地震数据进行层序划分、沉积相识别、沉积演化分析及储层预测,因受现今构造趋势的影响,具有较强的多解性.Wheeler域地震资料因具有等时性,地层旋回性清楚、展布范围明了,井震标定后便于层序及体系域划分,易于识别砂体,在进行地层的沉积演化过程分析,可以在相控约束下分析砂体的分布特征、成因,评价有利储层,减少多解性.本文通过正演探讨了同一沉积模式,不同地震频率下的地震成像,研究了不同沉积模式下的Wheeler转换方法,实现了地震资料从常规时间域转换到Wheeler域.通过Wheeler域井震标定,建立起地震地质的联系;拓展性的提出了在地震最小研究单元内,在双域(常规时间域和Wheeler域)进行解释和综合研究的技术流程;建立了基于地震沉积学的储层地震预测技术.并在准噶尔盆地西缘白垩系储层研究进行了应用.经钻井证实,这种基于地震沉积学的Wheeler域储层地震预测技术比较准确,效果良好,值得完善和推广.更多还原

【Abstract】 Sequence classification,sedimentary facies identification,sedimentary evolution analysis and reservoir prediction are usually resolved variably using conventional seismic data due to the impact of the current tectonic trends.Wheeler domain seismic data are isochronous,stratigraphic cyclicity and distribution of stratigraphic are clear.For Wheeler domain seismic data sequence and systems tract is divided easily,sand body is easily recognizable to analyze sedimentary evolution after well and seismic calibration.The distribution of sand body characteristics analysis can be analyzed controlling by seismic facies to evaluate favorable reservoir and reduce multiple solutions.In the paper the same depositional model and different seismic frequency imaging are discussed through forward modeling to study different Wheeler conversion method under different deposition mode.As a result the conventional seismic data is successfully converted into Wheeler data.The relations of seismic and geologic data are related through calibration in the Wheeler to divide the smallest unit in two domains to make interpretations and studies.So reservoir seismic prediction technique is built basing on seismic sedimentology and is applied to the western margin of the Cretaceous reservoirs in the Junggar Basin.It is confirmed by drilling that it is good to predict reservoir in Wheeler and get better effect.It is a worthwhile technique.更多还原