Geothermal and Petrophysical Investigations within the Chicxulub Scientific Drilling Project (CSDP)

本项目测量的数据将包括希克苏鲁布CSDP钻孔中的地热钻孔测量值、热特性实验室测量值以及该钻孔岩心样品的补充岩石物理特性。解释这些数据时，将特别考虑冲击对岩石物理性质的影响，重点是孔隙度和水力渗透率。除热测井外，业务处还将进行岩石物理测井，并将其纳入解释工作。通过记录钻井作业结束后温度恢复到原状的情况，将通过参考独立测量的岩石物理测井和实验室数据获得现场热导率和扩散率的相关信息。测量温度曲线中可能的水力效应将通过使用FD和FE方法的热工水力模型计算进行模拟。该项目与J.Safanda（捷克科学院）提出的地热CSDP项目密切合作，并与GFZ波茨坦地热小组密切联系，将有助于实现CSDP的主要科学目标。

The data to be measured in this project will comprise geothermal borehole measurements in the Chicxulub CSDP - drill hole and laboratory measurements of thermal properties as well as of supplementary petrophysical properties on core samples of this borehole. The data will be interpreted with special regard to the shock impact effects on the petrophysical properties of the rocks with emphasis on porosity and hydraulic permeability. Petrophysical logs, which will be performed in addition to the thermal logs by the Operational Service, will be incorporated into the interpretation. By recording the temperature recovery to undisturbed conditions after finish of drilling operations, information about the in situ thermal conductivity and diffusivity will be obtained by reference to the independently measured petrophysical logs and to the laboratory data. Possible hydraulic effects in the measured temperature profiles will be simulated by thermo-hydraulic model calculations using FD- and FE-methods. In narrow cooperation with the geothermal CSDP-project proposed by J. Safanda (Czech Academy of Sciences) and in a close contact to the geothermal group of the GFZ Potsdam the project will contribute to the major scientific goals of CSDP.