A SEISMIC INTERPRETATION SCHEME FOR IMPROVING PREDICTION ACCURACY OF CLASTIC RESERVOIRS
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摘要: 目前碎屑岩储层地震解释面临的关键问题之一是由于地震资料分辨率不足带来的多解性。根据碎屑岩储层特征主要受控于沉积相的基本特点,提出了"相控储层预测"的解释方案,即高分辨率目标处理与储层预测技术结合、地质沉积演化分析与储层预测技术结合。该研究思路的核心就是在充分挖掘地震资料潜力的基础上,将地质和地震方法结合起来,遵循整体规律到局部雕刻的储层预测思路,可以避免因地震资料分辨率不足带来的多解性问题,提高地震储层预测解释的精度,有效地服务于勘探开发。通过亚诺斯盆地A油田碎屑岩储层预测实例展示了该解释方案的应用效果,充分证实了其可行性及有效性;最后提出了碎屑岩储层预测解释方面的几点建议。Abstract: Multiple solutions remain the key problem in seismic interpretation of clastic reservoirs due to lack of high quality data. Based on the fact that the basic features of a clastic reservoir depends on its origin and sedimentary facies, we put forward a scheme for seismic data interpretation and reservoir prediction by integration of the high resolution processing and reservoir prediction technology and the combination of sedimentary evolution and reservoir prediction. Following the scheme, the problem of multiple solutions caused by lack of high resolution seismic data is solved and the interpretation accuracy for reservoir prediction is effectively improved. The results of the interpretation scheme are presented in this paper taking the clastic reservoir of the A oilfield of the Llanos basin as an example.
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