WELLBORE SURVEY USING OPTICAL FIBERS

摘要

A system and downhole tool for determining shape of a wellbore (1). A downhole tool includes a plurality of parallel optical fiber cores (8). Each of the cores is at least as long as a wellbore that is to be measured using the tool. Each of the cores includes a plurality of parallel optical fibers and each of the optical fibers comprising a Bragg Grating.