论文详情
中国海上油气勘探开发正面临着从浅层目标向中深层、由构造油气藏向复杂岩性油气藏转移的新形势和新任务,勘探难度的不断增大,对地震勘探技术提出了更高的要求。针对中国海洋油气勘探开发的迫切需求,在全面分析深水油气勘探面临问题的基础上,总结了中国海上地震勘探技术的新进展:在地震采集方面,研发了高精度拖缆采集装备和“犁式”宽频地震采集技术等;在地震处理解释技术方面,研发了τ-p域“犁式”宽频数据鬼波压制技术、宽频数据逆时偏移成像技术等;在开发地震方面,研发了海上时移地震关键处理解释技术等,尤其是在海上“犁式”宽频地震勘探技术和海上时移地震技术两个方面取得了突破性进展,为中国能源供应的重要接替区—南海深水区油气勘探开发提供了技术支撑,为实现中国海上油气勘探增储上产提供了技术保障。
The exploration and development of oil and gas in China's offshore regions is marked by new challenges because targets are changing from shallow to deeper reservoirs and from structural to complex lithologic reservoirs.Increasing difficulty in exploration demands advanced seismic exploration technologies.Based on a comprehensive analysis of the challenges of deepwater oil and gas exploration,several new technological advancements are reviewed in this study.For seismic acquisition,high precision streamer acquisition equipment and the “plow” broadband seismic acquisition technology stand out.For seismic processing and interpretation,τ-p domain deghosting and reverse time migration technologies for broadband seismic data are investigated.For development seismology,marine time-lapse seismic technology,etc.,are considered.In particular,breakthrough progress occurred in the fields of marine broadband seismic exploration technology and marine time-lapse seismic technology.Both play an important role in the exploration and production of oil and gas in the deepwater fields of the South China Sea,which is the main energy supplying region of China,and provide technical support for the growing exploration and production of offshore oil and gas reserves.