High power laser perforating tools and systems
First Claim
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1. A high power laser perforating system for providing high power laser energy to locations in a borehole to perforate a casing, 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;
b. an optical fiber for transmitting the laser beam from the high power laser to a perforation location in a borehole;
c. the optical fiber in optical communication with a bottom hole assembly for delivering the laser beam to the location on a casing in a borehole to be perforated; and
,d. the optical fiber having a means to suppress Stimulated Brillouin Scattering arising from the transmission of the greater than 10 kW laser beam;
e. whereby, substantially all power of the high power laser beam is delivered from the bottom hole assembly to the perforation location on the casing.
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Abstract
Systems devices and methods for the transmission of 1 kW or more of laser energy deep into the earth and for the suppression of associated nonlinear phenomena. Systems, devices and methods for the laser perforation of a borehole in the earth. These systems can deliver high power laser energy down a deep borehole, while maintaining the high power to perforate such boreholes.
518 Citations
12 Claims
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1. A high power laser perforating system for providing high power laser energy to locations in a borehole to perforate a casing, the system comprising:
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a. a source for high powered laser energy capable of providing a high power laser beam having a power greater than about 10 kW; b. an optical fiber for transmitting the laser beam from the high power laser to a perforation location in a borehole; c. the optical fiber in optical communication with a bottom hole assembly for delivering the laser beam to the location on a casing in a borehole to be perforated; and
,d. the optical fiber having a means to suppress Stimulated Brillouin Scattering arising from the transmission of the greater than 10 kW laser beam; e. whereby, substantially all power of the high power laser beam is delivered from the bottom hole assembly to the perforation location on the casing. - View Dependent Claims (2, 3, 4)
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5. A high power laser perforating system for providing high power laser energy to locations in a borehole to perforate the borehole, the system comprising:
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a. a high powered laser source, capable of providing a high power laser beam, having at least about 10 kW of power; b. a means for suppressing nonlinear scattering phenomena from the high power laser beam; and
,c. a means for transmitting the laser beam from the high power laser source to a perforating location in the borehole; d. whereby, the high power laser beam is delivered to the perforating location in the borehole. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A laser perforating system for providing high power laser energy to a location in a well, the system comprising:
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a. a high powered laser, capable of providing a high power laser beam having at least about 10 kW of power; b. a first means for suppressing nonlinear scattering phenomena arising from the transmission of the at least about 10 kW laser beam, in association with the high power laser; c. a means for transmitting the laser beam from the high power laser to a location in a well to perform a perforating operation in the well; and
,d. a second means for suppressing nonlinear scattering phenomena arising from the transmission of the at least about 10 kW laser beam, in association with the means for transmitting; e. whereby, the high power laser energy is delivered to the location in the well to perform the perforating operation. - View Dependent Claims (12)
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Specification