Physical Rock Properties and the Geothermal Field of the Chesapeake Bay Impact Structure

切萨皮克湾撞击结构的物理岩石特性和地热场

• 批准号: 22507075
• 负责人: Professor Dr. Hans Jürgen Burkhardt
• 金额: --
• 依托单位: Geophysikalisches Institut (GPI)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/22507075?language=en
• 关键词: Physical; Rock; Properties; Geothermal; Field

A joint approach of extensive laboratory measurements of various physical rock properties on densely sampled cores and high resolution temperature measurements in the borehole, drilled in the inner basin of the Chesapeake Bay impact structure, will contribute to a better understanding of the influence of the impact on the petrophysical properties and on the geothermal and hydraulic fields. The experimental petrophysical data, supported by mineralogical and structural analysis, will be interpreted with respect to the internal structure of rocks by numerical modeling and by correlations between different parameters and used for calibration and control of geophysical borehole logs, as well as for constraints to geophysical interpretation and modeling of the impact structure. By means of densely measured thermal conductivity the heat flow density and its vertical variations will be determined and interpreted in terms of conductive and advective heat transport. Borehole temperature logs during transient conditions will provide information about fracture zones, contributing to the study of the hydraulic regime of the impact structure.

在切萨皮克湾撞击构造内盆地钻探的密集取样岩心上对各种岩石物理特性进行广泛的实验室测量，并在钻孔中进行高分辨率温度测量，这两种方法的联合使用将有助于更好地了解撞击对岩石物理特性以及地热和水力场的影响。实验岩石物理数据，由矿物学和结构分析支持，将解释相对于岩石的内部结构，通过数值建模和不同参数之间的相关性，并用于地球物理钻孔日志的校准和控制，以及地球物理解释和建模的影响结构的约束。通过密集测量的热导率的热流密度和它的垂直变化将被确定和解释的传导和平流热传输。瞬态条件下的钻孔温度记录将提供有关断裂带的信息，有助于研究冲击结构的水力状态。