| CPC E21B 29/10 (2013.01) [E21B 33/12 (2013.01); E21B 47/002 (2020.05); E21B 47/113 (2020.05); E21B 47/117 (2020.05); E21B 47/26 (2020.05); G01V 1/48 (2013.01); G01V 2210/6163 (2013.01)] | 6 Claims |

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1. An in-situ 3-dimensional (3D) laser head, comprising:
a reflector that is attached to a tubular inside of a wellbore engaged in a drilling operation;
two protectors attached to the tubular inside of the wellbore; and
a focused lens positioned between the two protectors, wherein the reflector is configured to reflect a laser beam towards the focused lens, and the reflector and the focused lens are vertically displaceable and rotatable to direct the laser beam, as a divergent beam, towards a cased hole leak on the wellbore, and wherein the laser beam is configured to generate a corresponding level of temperature at the cased hole leak according to a rock type of a formation at the cased hole leak.
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