CPC E21B 47/005 (2020.05) [E21B 33/138 (2013.01); E21B 47/07 (2020.05); G01N 25/72 (2013.01); G01N 33/383 (2013.01); E21B 2200/20 (2020.05)] | 20 Claims |
14. A method comprising:
deploying a fiber optic cable in a downhole portion of a wellbore;
circulating a fluid in the wellbore for creating thermal gradients in a radial direction and an axial direction;
collecting, from the fiber optic cable, temperature data at a first location along the fiber optic cable over a period of time;
collecting, from the fiber optic cable, temperature data at a second location along the fiber optic cable over the period of time in which the fluid is left static in the wellbore and is returning to a thermal equilibrium; and
determining that the temperature data at the first location deviates from the temperature data at the second location over the period of time.
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