Abstract Typically pressure gradients and density-neutron crossover are used to differentiate between reservoir water, oil and gas. This study investigates fluid type in the Badri Field, Sidri sandstone reservoir of four offshore wells, A, B, C and D. These wells lack pressure or well test data and density-neutron fluid interpretation remain equivocal. In addition, these wells have not been tested before. Hence, a new technique adopted from the geochemical fingerprint technique termed petrophysical fingerprint has been used to distinguish equivocal petrophysical characteristics. In this study, the petrophysical fingerprint was used to distinguish fluids, a combination of synthetic and raw logs was plotted on crossplots charts and correlated to previous oil and gas well tests. This study revealed that, 1) the Petrophysical Fingerprint technique was found to clarify otherwise ambivalent log responses, lending confidence to the Badri Field interpretation, 2) the petrophysical fingerprint strategy showed notable results, resulted in gas signature fingerprint in the well B, while showing an oil signature fingerprint in wells C and D. 3) In comparison to the traditional plotting method, the petrophysical fingerprint technique has the advantages that the correlation between the obtained petrophysical fingerprints of the individual petrophysical characters and the unknown investigated petrophysical character will increase the precision of the petrophysical investigation process, which in turn will guarantee a reliable judgment on the investigated petrophysical properties, 4) the authors refer to some caution, where more or less homogeneous reservoir characteristics are preferred to correlate petrophysical fingerprints signatures, else at least the reservoir to be not highly heterogeneous, where homogeneous reservoirs are not common in reality.

中文翻译：

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在硅质碎屑岩储层中使用常规和合成测井的调查岩石物理指纹技术：案例研究，埃及苏伊士湾盆地。

摘要 通常使用压力梯度和密度-中子交叉来区分储层水、油和气。本研究调查了 Badri 油田、Sidri 砂岩油藏 A、B、C 和 D 四个海上井的流体类型。这些井缺乏压力或试井数据，密度-中子流体解释仍然模棱两可。此外，这些井之前没有经过测试。因此，从地球化学指纹技术中采用的一种称为岩石物理指纹的新技术已被用于区分模棱两可的岩石物理特征。在这项研究中，岩石物理指纹用于区分流体，合成和原始测井的组合绘制在交会图上，并与之前的油气井测试相关联。这项研究表明，