Patent ID: 8225869

Claim:
A downhole depth locator system comprising: an integrally formed, singular elongated tubular member having an inner surface and an outer surface and extending between a first end of the tubular member and a second end of the tubular member, wherein a locating structure is formed along the inner surface of said tubular member between the first and second ends; and a locator tool comprising: an elongated shaft; a plurality of locator springs attached to the shaft wherein the locator springs are substantially parallel to and spaced about the shaft; wherein the locator springs are configured to compress to a first position and to expand to a second position; wherein the locator springs are biased to expand to the second position; wherein each locator spring includes a locating pad affixed thereto; wherein the locating pad is sized to engage with said internal locating structure; wherein the internal locating structure is sized to allow the locator springs to expand to the second position when said locating pad is engaged thereby; and a sensor for measuring the compression or expansion of at least one locator spring.