Apparatus for advancing a wellbore using high power laser energy

摘要

Delivering high power laser energy to form a borehole deep into the earth using laser energy. Down hole laser tools, laser systems and laser delivery techniques for advancement, workover and completion activities. A laser bottom hole assembly (LBHA) for the delivery of high power laser energy to the surfaces of a borehole, which assembly may have laser optics, a fluid path for debris removal and a mechanical means to remove earth.

主权项

1. A laser bottom hole assembly comprising;
a. a first rotating housing; b. a second fixed housing; c. the first housing being rotationally associated with the second housing; d. a fiber optic cable for transmitting a laser beam, the cable having a proximal end and a distal end, the proximal end adapted to receive a laser beam from a laser source, the distal end optically associated with an optical assembly; e. at least a portion of the optical assembly fixed to the first rotating housing, whereby the fixed portion rotates with the first housing; f. a mechanical assembly fixed to the first rotating housing, whereby the assembly rotates with the first housing and is capable of applying mechanical forces to a surface of a borehole upon rotation; and, g. a fluid path associated with first and second housings, the fluid path having a distal and proximal opening, the distal opening adapted to discharge the fluid toward the surface of the borehole, whereby fluid for removal of waste material is transmitted by the fluid path and discharged from the distal opening toward the borehole surface to remove waste material from the borehole.