1. An information analysis system comprising: a processor; a database that stores phrase database including a phrase dictionary and a plurality of labeled phrases, and a wellbore database including wellbore information of a plurality of wellbores; and a memory that stores instructions that cause the processor to execute: a report receiver unit that receives a geology report from a user interface including text information of a plurality of types of geological characteristics of a plurality of rock samples along a first one of the wellbores; a phrase extraction unit that, for each type of the geological characteristics, extracts a plurality of phrases and a plurality of depths from the text information of the geological characteristics in the geology report based on the phrase dictionary in the phrase database; a phrase classification unit that, for each type of the geological characteristics, classifies the extracted phrases into a plurality of probabilities for the extracted phrases over the plurality of depths based on the labeled phrases in the phrase database; a numerical generation unit that, for each type of the geological characteristics, transforms the probabilities of the extracted phrases over the plurality of depths into a numerical vector or a numerical scalar based on the wellbore information so that the types of the geological characteristics are transformed into a plurality of numerical vectors or numerical scalars; and an output unit which receives a selection of one of the types of geological characteristics, and displays a visualization of the numerical vector or numerical scalar of the selected one of the types of the geological characteristics of the first one of the wellbores in relation with different numerical vectors or numerical scalars of ones of the plurality of wellbores stored in the wellbore database.