地震叠前深度偏移技术进展及应用问题与对策

Progress of seismic prestack depth migration and its application problems and solution

地震叠前深度偏移技术是目前油气勘探、开发、科研和生产中应用的关键技术。结合胜利油区在叠前深度偏移技术方面的研究、应用成果及经验，首先介绍面向研究区块地表和地下地质情况的特色化实用叠前深度偏移与建模技术，在不同区块和地质任务的应用中，这些技术可以根据需求配套使用。其次，从采集—处理—解释一体化的思路出发，分析了叠前深度偏移技术的影响因素，并提出了针对性的解决对策。最后，通过几个典型区块的工业化应用实例验证了胜利油区叠前深度偏移技术一体化解决方案的效果，总结出一套“深度域+”的叠前深度偏移技术研究思路，进一步推动深度域地震技术的发展，更好地为油气田勘探和开发服务。

Seismic prestack depth migration is a key technology in hydrocarbon exploration,development,research and production.Based on study on prestack depth migration technology research and its application achievement and experience in Shengli oilfield,characteristics and practical prestack depth migration and modeling techniques were introduced firstly according to surface and subsurface geologic conditions of the study area,which could be used together in application to different study area and different geologic task according to the actual need.And secondly,effects on the prestack migration technique were analyzed based on the idea of integration of acquisition,processing and interpretation,and then the corresponding countermeasures were put forward.Finally,several industrial applications of the technique to typical examples in Shengli oilfield were used to verify effectiveness of integration solution of prestack depth migration technology for hydrocarbon exploration.A set of“depth domain+”prestack depth migration technology has been summarized to promote further development of the seismic technique in domain of depth and to provide better service for oilfield exploration and development.