Rheology of rock salt for salt tectonics modeling

作     者：Shi-Yuan Li Janos L.Urai 

作者机构：School of Petroleum Engineering China University of PetroleumBeijing Endogene Dynamik Faculty of Geo-Resources and Materials Technology RWTH Aachen University 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2016年第13卷第4期

页      面：712-724页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：RWTH Aachen University China University of Petroleum for the support of the work funded by the startup project of China University of Petroleum, Beijing (No.2462014YJRC041) supported by Science Foundation of China University of Petroleum, Beijing (No. C201601) 

主　　题：Rock salt rheology Power law creep Dislocation creep Modeling 

摘      要：Numerical modeling of salt tectonics is a rapidly evolving field; however, the constitutive equations to model long-term rock salt rheology in nature still remain controversial. Firstly, we built a database about the strain rate versus the differential stress through collecting the data from salt creep experiments at a range of temperatures（20–200 ℃） in laboratories. The aim is to collect data about salt deformation in nature, and the flow properties can be extracted from the data in laboratory ***, as an important preparation for salt tectonics modeling, a numerical model based on creep experiments of rock salt was developed in order to verify the specific model using the Abaqus package. Finally, under the condition of low differential stresses, the deformation mechanism would be extrapolated and discussed according to microstructure research. Since the studies of salt deformation in nature are the reliable extrapolation of laboratory data, we simplified the rock salt rheology to dislocation creep corresponding to power law creep（n = 5） with the appropriate material parameters in the salt tectonic modeling.