Future challenges and unexplored methods for 4D seismic analysis
Future challenges and unexplored methods for 4D seismic analysis
复制标题
4D 地震分析的未来挑战和尚未探索的方法
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Landrø
中科院分区：
文献类型：
--
作者：
M. Landrø
4D地震分析在未来十年将面临的两个主要挑战是使其适用于碳酸盐岩储层和从信噪比低的4D数据集中提取与生产相关的信息。为了应对这些挑战，我们必须测试各种方法。本文讨论了其中的一些机会：需要新的和创新的岩石物理测量，特别是获得更多的洞察力如何变化的应力条件影响地震参数。如何将储层流体流动模拟器与4D数据耦合，以及如何以最佳方式将地质力学建模与时移地震数据耦合。最近对压实储层的4D研究表明，我们必须研究覆盖层岩石以及储层本身，因此需要增加对地质力学变化的了解。讨论了四维分析的新方法，如加大对地震长炮检距信息的开发。新的方向可能是限制4D分析与其他测量，如电磁海床测井或高精度重力测量。对高重复性数据的关注可能会继续下去，尽管我们在过去十年中看到的地震重复性的显著改善预计在未来会更加温和。拍摄产生的噪音和天气产生的噪音是假设这将发生的一些原因。
Summary The two major challenges that 4D seismic analysis will face in the next decade is to make it work for carbonate reservoirs and to extract production related information from 4D data sets w h e re the signal to noise ratio is low. In order to meet these challenges we have to test various methods. Some of these opportunities are discussed in this paper: The need for new and innovative rock physics measurements, especially to gain m o re insight into how varying stress conditions influence the seismic parameters. How to couple the reservoir fluid flow simulator with 4D data, and furthermore how the geomechanical modeling should be coupled to the time-lapse seismic data in an optimal way. Recent 4D studies from compacting re s e rvoirs have revealed that we have to study the overburd e n rocks as well as the reservoir itself, and there f o re there is a need to increase our insight into geomechanical changes. New methods for 4D analysis, such as for instance incre a s e d exploitation of the seismic long offset information are discussed. New directions might be to constrain the 4D analysis with other measurements such as electromagnetic sea bed logging or high precision gravimetric measurements. The focus on high repeatable data will probably continue, although the dramatic improvements in seismic repeatability we have seen in the last decade, is expected to be more moderate in the f u t u re. Shot generated noise and weather generated noise are some of the reasons for assuming that this will happen.