论文部分内容阅读
地震属性的分析和解释改变了地学家观察和解释地震资料的方法。相干处理因其边界可探测能力而极大地提高了勘探学家对构造格局快速成图以及详细解释常规振幅数据集中不能识别的细节的能力。但是,未能充分利用这种技术分析地震特征所反映的地层和沉积形态。对于河流相沉积体系导致的地震成像的复杂性是多种因素的结果,这包括沉积的地质非均质性、资料中的随机噪声、地表或海底特征以及构造的非连续性。假设属性适合于成像,那么地学家就能准确地解释地震资料中的地层特征,这就需要能清晰分析这些复杂性的方法。本文论述了阿根廷SanJorge盆地河流相沉积地层单元中的一个研究实例。我们综合了主要地层界面层序地层解释和地震属性的方法,以便在勘探和开发井的钻探过程中降低储层不确定性。
The analysis and interpretation of seismic attributes has changed the way geoscientists observe and interpret seismic data. Coherent processing greatly improves the ability of prospectors to map structures quickly and explain in detail unrecognizable details of conventional amplitude data sets due to their border detectability. However, this technique has not been fully exploited to analyze the formation and sedimentary morphology as reflected by seismic characteristics. The complexity of seismic imaging caused by fluvial depositional systems is the result of many factors, including geological heterogeneity of deposition, random noise in the data, surface or submarine features, and structural discontinuities. Given that the attributes are suitable for imaging, geoscientists can accurately interpret the stratigraphic features in the seismic data, which requires a way to clearly analyze the complexity. This paper discusses a case study of fluvial facies stratigraphy in the San Jorge basin of Argentina. We have integrated methods of sequence stratigraphic interpretation and seismic attributes of major stratigraphic interfaces to reduce reservoir uncertainty during drilling of exploration and development wells.