Patent ID: 8936108
Filing Date: 2015-01-20
Classification: E21B

Abstract:
1. A downhole cutting system for providing high power laser to perform laser cutting operationswithin boreholes, the system comprising: a. a source for high powered laser energy capable of providing a high power laser beam having a power greater than about 10 kW; a chiller operably associated with the high power laser source; b. an optical fiber for transmitting the laser beam from the high power laser to a predetermined location in a borehole to perform a laser cutting operation; c. the optical fiber in optical communication with the high power laser source and in optical and mechanical association with a laser tool assembly containing laser optics; d. the optical fiber associated with a means to suppress Stimulated Brillouin Scattering arising from the transmission of the greater than about 10 kW laser beam; e. whereby substantially all power of the high power laser beam is delivered from the laser tool assembly to the predetermined location in the borehole to perform the laser cutting operation.