Method, system and device for acquiring corrosion rate of whole well section of casing based on logging information and medium

The invention discloses a method, system, device and medium for obtaining the corrosion rate of a whole well section of a casing based on logging information, and the method comprises the steps: extracting the minimum inner diameter value of each casing, and obtaining the wall thickness loss of the casings with different depths; acquiring the corrosion rate of the whole well section of the casing on the basis of the lost wall thickness of the casing with different depths; for a well with casing damage; the corrosion rate of the whole well section of the casing is updated, and the final casing breaking point/section corrosion rate is obtained; replacing the corrosion rate of the casing breaking point/section at the same depth with the corrosion rate of the non-casing breaking point/section in the whole well section corrosion rate based on the casing breaking point/section corrosion rate, and obtaining a final casing whole well section corrosion rate analysis result; and on the basis of single-well casing full-