Predicting the distribution of thin bed reservoirs by broad frequency band seismic
Predicting the distribution of thin bed reservoirs by broad frequency band seismic
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DOI：
10.1007/s11770-007-0017-8
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发表时间：
2007-06
影响因子：
0.7
通讯作者：
Zishun Li;Xuebin Guo
中科院分区：
文献类型：
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作者：
Zishun Li;Xuebin Guo
松辽盆地中浅层薄互层储层识别是一大难题。为了解决这个问题，我们提出了一种利用宽频带和超高分辨率地震来预测薄储层分布的技术。基于正演模型，我们认识到薄层地震反射的特征是振幅随频率变化（振幅与频率，AVF）。我们根据薄层储层的 AVF 特征计算其厚度，并利用宽频带和超高分辨率地震预测薄层储层的分布。该技术已在松辽盆地北部招远三维地震区得到应用。地震分辨率比常规地震提高了两三倍，并发现了许多薄层储层。该技术在油气勘探开发中具有广泛的应用，如优化探井位置、井（特别是水平井）设计、试产层位选择、开发井储层连续性分析等。
Recognition of thin interbedded reservoirs in the middle-shallow strata in the Songliao Basin is a great difficulty. In order to resolve this problem, we present a technique for predicting the distribution of thin reservoirs using a broad frequency band and ultra high resolution seismic. Based on forward modeling, we recognized that a thin bed seismic reflection is characterized by changing amplitude with changing frequency (amplitude versus frequency, AVF). We calculate the thickness of thin reservoirs from their AVF characteristics and predict the distribution of thin bed reservoir using broad frequency band and ultra high resolution seismic. The technique has been applied in the 3D seismic area of Zhaoyuan in the northern part of the Songliao Basin. The seismic resolution is increased by two or three times over that of conventional seismic and many thin reservoirs have been identified. The technique has extensive application to the exploration and development of oil and gas, such as optimizing the location of exploration wells, the design of wells (especially horizontal wells), choice of production test layers, analyzing reservoir continuity in development wells, and so on.