Using Gassmann Equation Predict Marine Sediment Porosity
Hou Zhengyu
Guo Changsheng
Wang Jingqiang
Fu Yongtao
Li Tiegang
Abstract：Porosity is one of the most important parameters for oil exploration and ocean topographic survey.The prediction of porosity in marine sediments has always been a difficulty.In this paper,the Gassmann equation was rearranged and utilized to estimate porosity based on the relationship between porosity and compressional wave velocity.The compressional wave velocity was measured on the deck based on the core samples collected in the southern South China Sea,and the porosity was measured in the laboratory.Porosity calculated using Gassmann equation was compared with that measured in laboratory.The results show that Gassmann equation can better predict the seafloor sediment porosity,and that is particularly accurate at shallow wa-ter areas.The sensitivity of Gassmann equation was studied by error norm method,and the results show that compressional wave velocity is the most influential parameter for porosity prediction.
Keywords：porosityGassmann equationseafloor sedimentcompressional wave velocitypetroleum geologymarine geology
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1198-1205 )