Elastic and Anelastic Properties of KTB Hole Samples Under Simulated In-situ P-T Conditions: Effects of Fabric, Cracks,and Fluid (Pore) Pressure

德国超深大陆钻孔（KTB）项目为研究地壳岩石的地震和岩石物理性质提供了一个极好的机会。对钻孔样品的实验室研究，结合巴伐利亚Oberfalz的现场地震调查和测井数据，将能够对地震反射数据和地壳岩性、成分、微观结构、结构和孔隙流体存在的其他地球物理特征进行微调和增强解释。该项目涉及对KTB样品衰减特性的频率、孔隙压力和温度依赖关系的实验室研究，旨在确保解释地震和测井数据的重要联系。该结果还将补充现有的速度数据。要收集的数据对于了解在该地区遇到的强烈片理和裂缝岩石中的波传播至关重要。在模拟的原位流体含量、流体压力和温度条件下，对不同深度的KTB样品的衰减特性进行系统研究，将有助于将实验室结果与地下裂缝建模和估计地应力联系起来。＊＊＊

9319786 Manghnani The German super-deep continental bore-hole (KTB) project offers an excellent opportunity to study the seismic and petrophysical properties of crustal rocks. Laboratory studies of the bore-hole samples, combined with field seismic surveys in the Bavarian Oberfalz and well-log data, will enable fine-tuning and enhancement of interpretations of seismic reflection data and other geophysical signatures in terms of the crustal lithology, composition, microstructure, fabric, and presence of pore fluids. This project involves laboratory studies on the frequency, pore pressure, and temperature dependences of the attenuation properties of the KTB samples which are aimed at securing a vital linkage in interpreting seismic and well-log data. The results will also complement existing velocity data. The data to be collected are essential for understanding wave propagation in intensely foliated and cracked rocks encountered in this region. A systematic study of the attenuation properties of KTB samples from varying depths under simulated in-situ fluid content, fluid pressure, and temperature conditions will help in relating the laboratory results to subsurface crack modeling and in estimating in-situ stress. ***