Estimating in situ mechanical properties of sediments containing gas hydrates

摘要

A method for constructing elastoplastic property correlations in multicomponent particulate systems. The method includes obtaining parameters from geophysical data of a sediment-hydrate system, where the parameters include s_hyd and p_c, and where s_hyd is a hydrate saturation and p_c is a confining pressure. The method further includes determining a Young's modulus (E) of the sediment-hydrate system using the parameters and a correlation, where the correlation is; $$ \frac{E}{p_c}=90.58+\frac{78.90}{{\alpha }^{0.5831}}+\frac{800.4s_{\mathrm{hyd}}^{1.371}}{{\alpha }^{1.022}},$$and where α=p_c/c and c is a scaling variable with dimensions of pressure. The method further includes adjusting a field operation based on the Young's modulus of the sediment-hydrate system.