论文部分内容阅读
现已探明准噶尔盆地永进油田具有上亿吨的石油地质储量,其主力层系之一为侏罗系西山窑组,但其储层埋藏深、非均质性强、储集物性较差,表现为砂、泥岩速度混杂、地震反射同相轴与砂、泥岩对应关系不明确等特征。分析研究认为,自然伽马曲线与岩性具有较好对应关系,能够反映储层的地球物理特征,通过采取波阻抗反演技术有效识别了目的层段砂、泥岩的空间分布情况,并利用“空变时窗”地震属性优化分析技术有效地预测、评价了储层。
It has been ascertained that there are hundreds of millions of tons of oil geological reserves in the Yongjin field in the Junggar Basin. One of the main strata is the Jurassic Xishanyao Formation. However, the reservoirs are deep buried with strong heterogeneities and poor reservoir properties , Which is characterized by mixed sand and mudstone velocities, uncertain relationship between seismic reflection events and sand and mudstone, and other characteristics. The analysis shows that the natural gamma curve has a good correspondence with lithology and can reflect the geophysical characteristics of the reservoir. The wave impedance inversion technique can effectively identify the spatial distribution of the sand and mudstone in the target zone and use the The “time-varying windows” seismic attribute optimization analysis technique effectively predicts and evaluates reservoirs.