Patent ID: 7234895

Claim:
A method of indicating at least one characteristic of at least a portion of a containment system providing a barrier adjacent a selected region of a subterranean formation, the method comprising: forming a barrier by providing a plurality of casing strings, wherein each of the plurality of casing strings is laterally adjoined to at least one other adjacent casing string of the plurality of casing strings by way of an interlocking structure; disposing at least one electrically conductive element along at least a portion of a length of at least one of the plurality of casing strings forming the barrier; substantially filling at least one interlocking structure extending between two laterally adjacent casing strings of the plurality with barrier filler material performing a first electrical time domain reflectometry using the at least one electrically conductive element to determine at least one characteristic associated with the barrier prior to substantially filling the at least one interlocking structure with the barrier filler material; and performing at least a second electrical time domain reflectometry process subsequent to substantially filling the at least one interlocking structure with the barrier filler material.