ABSTRACT Quality, availability and consistency of the measured and interpreted well log data are essential in the seismic reservoir characterization methods, and seismic petrophysics is the recommended workflow to achieve data consistency between logs and seismic domains. This paper uses seismic petrophysics workflow to improve well logs and pore geometry interpretations for an oil carbonate reservoir in the Fahliyan Formation in the southwest of Iran. The petrophysical interpreted well logs, rock physics and well‐to‐seismic tie analysis are integrated into the proposed workflow. Our implementation incorporates revising petrophysical well log interpretations and updating pore geometry characteristics to obtain a better well‐tie quality. We first propose an improved pore‐type characterization approach based on both P‐ and S‐wave velocities for quantifying pore geometry. Then, seismic logs are estimated accordingly, and the results are used in the well‐to‐seismic analysis. The quality of the well‐tie is improved, furthermore, by iterating on the petrophysical interpreted well logs as well as the calculated pore geometries. For the intervals with high‐quality data, our workflow improves the consistency between the results of measured and modelled seismic logs. For the intervals with problematic well logs, the application of our proposed workflow results in the successful replacement of the poor data and subsequently leads to an improved wavelet estimation and well‐tie results. In both cases, a higher quantification of pore geometries is achieved, which in turn is confirmed by the core images and formation micro‐imager analysis.

中文翻译：

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基于地震岩石物理的碳酸盐岩储层测井孔隙类型定量表征

摘要 测量和解释的测井数据的质量、可用性和一致性在地震储层表征方法中至关重要，而地震岩石物理学是实现测井和地震域之间数据一致性的推荐工作流程。本文使用地震岩石物理学工作流程改进伊朗西南部 Fahliyan 组碳酸盐岩油藏的测井和孔隙几何解释。岩石物理解释测井、岩石物理和井地震联系分析被集成到建议的工作流程中。我们的实施包括修改岩石物理测井解释和更新孔隙几何特征以获得更好的连接质量。我们首先提出了一种基于 P 波和 S 波速度的改进的孔隙类型表征方法，用于量化孔隙几何形状。然后，相应地估计地震测井，并将结果用于井到地震分析。此外，通过对岩石物理解释的测井记录以及计算出的孔隙几何形状进行迭代，可以提高连接井的质量。对于具有高质量数据的区间，我们的工作流程提高了实测和模拟地震测井结果之间的一致性。对于有问题测井的间隔，我们提出的工作流程的应用导致成功替换不良数据，随后导致改进的小波估计和连井结果。在这两种情况下，都实现了对孔隙几何形状的更高量化，