SYSTEMS, TOOLS AND METHODS FOR HIGH POWER LASER SURFACE DECOMMISSIONING AND DOWNHOLE WELDING

摘要

There are provided using high power laser systems for performing decommissioning welding and repair of structures in boreholes, off-shore, and other remote and hazardous locations. In a particular embodiment the laser system is a Class I system.

主权项

1. A high power laser tool for deployment in a tubular to be cut, the tool comprising:
a. a first assembly, and a second assembly; b. a spar having a length and mechanically and rotationally associating the second assembly and the first assembly, thereby defining a distance between the second assembly and the first assembly; and, whereby the second assembly is rotatable with respect to the first assembly; c. the second assembly comprising a housing, the housing comprising an optics assembly in optical communication with a high power optical fiber and a laser beam exit port, wherein the optics assembly defines a laser beam path exiting the housing through the laser beam exit port; and, d. the first assembly comprising a means for rotating the spar and an engagement device, wherein upon deployment of the tool the first assembly is capable engaging the tubular and rotating the spar and the second assembly to cut the tubular with a laser beam at a predetermined depth.