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首页> 外文期刊>Nonlinear processes in geophysics >Application of wavelet transfoDrismcussifoonsr evaluation of hydrocarbon reservoirs: example from Iranian oil fields in the north of the Persian Gulf
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Application of wavelet transfoDrismcussifoonsr evaluation of hydrocarbon reservoirs: example from Iranian oil fields in the north of the Persian Gulf

机译:小波变换在油气藏评价中的应用:以波斯湾北部伊朗油田为例

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摘要

The Persian Gulf and its surrounding area are some of the biggest basins and have a very important role in producing huge amounts of hydrocarbon, and this potential was evaluated in order to explore the target for geoscientists and petroleum engineers. Wavelet transform is a useful and applicable technique to reveal frequency contents of various signals in different branches of science and especially in petroleum studies. We applied two major capacities of continuous mode of wavelet transform in seismic investigations. These investigations were operated to detect reservoir geological structures and some anomalies related to hydrocarbon to develop and explore new petroleum reservoirs in at least 4 oilfields in the southwest of Iran. It had been observed that continuous wavelet transform results show some discontinuities in the location of faults and are able to display them more clearly than other seismic methods. Moreover, continuous wavelet transform, utilizing Morlet wavelet, displays low-frequency shadows on 4 different iso-frequency vertical sections to identify reservoirs containing gas. By comparing these different figures, the presence of low-frequency shadows under the reservoir could be seen and we can relate these variations from anomalies at different frequencies as an indicator of the presence of hydrocarbons in the target reservoir. paleo-depositional environments. Spectral analysis, which is a quick and important method in seismic interpretation, provides a strong tool to study these types of subsurface layers.
机译:波斯湾及其周边地区是一些最大的盆地,在产生大量碳氢化合物方面起着非常重要的作用,对此潜力进行了评估,以便为地球科学家和石油工程师探索目标。小波变换是一种有用且适用的技术,可以揭示科学的不同分支(尤其是石油研究)中各种信号的频率内容。我们将小波变换的连续模式的两种主要功能应用到地震调查中。进行这些调查是为了检测油藏的地质结构和一些与油气有关的异常,以开发和勘探伊朗西南部至少四个油田的新石油储层。已经观察到,连续小波变换结果显示出断层位置的某些不连续性,并且比其他地震方法能够更清楚地显示它们。此外,利用Morlet小波的连续小波变换在4个不同的等频垂直剖面上显示低频阴影,以识别含气储层。通过比较这些不同的数字,可以看到储层下低频阴影的存在,并且我们可以将这些变化与不同频率下的异常联系起来,以此作为目标储层中碳氢化合物存在的指标。古沉积环境。频谱分析是地震解释中一种快速而重要的方法,它为研究这些类型的地下层提供了强大的工具。

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