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寻找隐蔽油气藏已经成为人们最关注的热点之一。一年前,作者曾经利用形成“储层演化地震分析”模式的技术思路,对塔里木盆地北缘一个油田的隐蔽油气藏开发实例进行了深入研究。这套技术思路是:首先采用基于相对保持振幅和波形的提高分辨率处理,然后在基于参考标准层井信息标定基础上沿参考标准层进行地震属性提取,最后通过地震属性的空间变化识别厚度小于1／4波长的薄储层。该隐蔽油气藏经过一年多的开发后结果表明,现今的开发区域和当初提供的地震振幅异常预测分布范围十分吻合。此例说明作者总结的“储层演化地震分析”解释方法在寻找隐蔽油气藏领域有广阔的应用前景。
Looking for subtle reservoirs has become one of the hot spots people are most concerned about. A year ago, the authors used the technique of forming the “Reservoir Evolution Seismic Analysis” model to conduct an in-depth study of subtle reservoir development in an oil field in the northern margin of the Tarim Basin. The technical idea is as follows: Firstly, the resolution is improved based on the relative amplitude and waveform, and then the seismic attributes are extracted along the reference standard layer based on the reference standard well information. Finally, the spatial variation of seismic attributes is used to identify the thickness less than 1/4 wavelength thin reservoir. After more than one year’s development of this subtle reservoir, the results show that the current development area is in good agreement with the original seismic amplitude anomaly distribution range. This example shows that the author’s summary of the “reservoir evolution seismic analysis ” interpretation method has broad application prospects in the search for subtle reservoirs.