Abstract: Wave impedance inversion is an important tool for reservoir study and lithology interpretation, in which sonic and density log curves are indispensable basic data, since their qualities directly affect those of the inversion and interpretation results. This paper makes analyses of the considerations of using Garden's relation and its processing procedure under special conditions. It draws a conclusion that fully effective application of Garden's relation can result in ideal sonic and density log curves.

Key words: (Garden' s relation), Application, Condition, Sonic logging, Formation density logging, Log