Rational Rock Physics for Improved Velocity Prediction and Reservoir Properties Estimation for Granite Wash (Tight Sands) in Anadarko Basin, Texas

IF 1 Q3 GEOCHEMISTRY & GEOPHYSICS
M. Durrani, K. Willson, Jingyi Chen, B. Tapp, J. Akram
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引用次数: 7

Abstract

Due to the complex nature, deriving elastic properties from seismic data for the prolific Granite Wash reservoir (Pennsylvanian age) in the western Anadarko Basin Wheeler County (Texas) is quite a challenge. In this paper, we used rock physics tool to describe the diagenesis and accurate estimation of seismic velocities of P and S waves in Granite Wash reservoir. Hertz-Mindlin and Cementation (Dvorkin’s) theories are applied to analyze the nature of the reservoir rocks (uncemented and cemented). In the implementation of rock physics diagnostics, three classical rock physics (empirical relations, Kuster-Toksoz, and Berryman) models are comparatively analyzed for velocity prediction taking into account the pore shape geometry. An empirical (-) relationship is also generated calibrated with core data for shear wave velocity prediction. Finally, we discussed the advantages of each rock physics model in detail. In addition, cross-plots of unconventional attributes help us in the clear separation of anomalous zone and lithologic properties of sand and shale facies over conventional attributes.
德克萨斯州Anadarko盆地花岗岩洗砂层(致密砂岩)速度预测与储层物性评价的合理岩石物理
由于其复杂的性质,从阿纳达科盆地西部(Wheeler County)丰富的Granite Wash储层(宾夕法尼亚时代)的地震数据中得出弹性特性是一个相当大的挑战。本文利用岩石物理工具对花岗岩冲洗岩储层的成岩作用进行了描述,并对其纵、横波地震速度进行了精确估计。应用赫兹-明德林和胶结(德沃金)理论分析储层岩石的性质(未胶结和胶结)。在岩石物理诊断的实施中,对比分析了三种经典岩石物理模型(经验关系模型、Kuster-Toksoz模型和Berryman模型)在考虑孔隙形状几何的情况下进行速度预测。用岩心数据标定了横波速度预测的经验(-)关系。最后,详细讨论了每种岩石物理模型的优点。此外,非常规属性的交叉图有助于我们明确区分砂页岩相的异常带和岩性特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
International Journal of Geophysics
International Journal of Geophysics GEOCHEMISTRY & GEOPHYSICS-
CiteScore
1.50
自引率
0.00%
发文量
12
审稿时长
21 weeks
期刊介绍: International Journal of Geophysics is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of theoretical, observational, applied, and computational geophysics.
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