Downhole well integrity reconstruction in the hydrocarbon industry

1. A method for downhole well integrity reconstruction in a hydrocarbon reservoir, comprising:

positioning, a laser head at a first subterranean location, wherein the laser head is attached to a tubular inside of a wellbore;

directing, by the laser head, a laser beam towards a cased hole leak on the wellbore;

determining a type of rock around the leak; and

sealing the cased hole leak using the laser beam according to the determined type of rock around the leak.

2. The method of claim 1 , wherein the laser head includes a reflector and a focused lens, and wherein the method further comprises: rotating the reflector and the focused lens to aim at the leak.

3. The method of claim 1 , wherein the laser head further includes an insulated cable that protects optical fibers, and wherein the optical fibers conduct the laser beam.

4. The method of claim 1 , wherein the leak is sealed while the tubular is engaged in a drilling operation or a tripping operation.

5. The method of claim 1 , further comprising: receiving a command from a controller that is communicatively coupled with the laser head, and wherein the laser head is positioned at the first subterranean location in response to the command.

6. The method of claim 1 , wherein the first subterranean location is determined based on images generated by an imaging tool that operates inside the wellbore.

7. The method of claim 1 , wherein the tubular is a drill pipe.

8. The method of claim 2 , wherein the laser head further includes a protector that blocks debris for the focused lens.