摘要
柴达木盆地地处青藏高原北部,高寒缺氧,气候干旱,是中国三大内陆盆地之一,油气资源十分丰富。平台地区位于柴达木盆地北缘山前带,地势平坦适合可控震源施工。随着勘探的深入,对资料品质要求越来越高。通过近年的试验与探索,高密度、高覆盖、宽方位是提高资料品质最有效,但该方法带来勘探成本的大幅度提高。可控震源滑动扫描高效采集技术地应用,有效地化解了高密度、高覆盖、宽方位采集与勘探成本大幅增加之间的矛盾。这里将阐述通过基于滑动扫描技术的高密度、高覆盖、宽方位三维地震在柴达木盆地平台地区地实施,实现了在提高地震资料的品质的同时还有效地降低了勘探成本。
The Qaidam basin is located in the north Tibetan Plateau and is one of China's three major inland basins.Qaidam basin is rich of the oil and gas resources,but it is arid,bare and lack of oxygen.The Ping-tai area is located in the northern piedmont zone of Qaidam basin and the typical flat terrain is propitious to field operations.With further exploration and devel-opment of oil and gas,the requirements of high seismic quality are more and more increasing.According previous studies and investigations,the 3D seismic data acquisition method with high-density,high folds,wide azimuth is effective to improve seismic data quality,but the method require enormous exploration costs.A vibroseis slip-sweep acquisition technique ,how-ever,an efficient method for solving the problem of the high-density,high folds,wide azimuth acquisition and enormous ex-ploration costs.In this paper,we first introduce the geometry design of the 3D seismic data vibroseis slip-sweep acquisition with high-density,high folds,wide azimuth and its field operations in Pingtai area of Qaidam basin,and then the results show that the vibroseis slip-sweep acquisition technique not only improves the seismic quality,but also reduces exploration costs.
出处
《物探化探计算技术》
CAS
CSCD
2014年第5期595-600,共6页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
滑动扫描
三维地震
观测系统
勘探成本
勘探周期
高密度
高覆盖
宽方位
slip-sweep
3-D seismic
observation system
exploration cost
exploration cycle
high density
high folds
wide azimuth
