Drilling, perforating and formation analysis
First Claim
Patent Images
1. A system for use in transmitting light in a well bore, comprising:
- a seal adapted to substantially seal circumferentially around the well bore, and when substantially sealing, define an end of an isolated zone of the well bore;
a fluid light path comprising a fluid supplied into the isolated zone, the fluid adapted to displace less optically transmissive fluid residing in the well bore; and
at least one of a laser device adapted to output a laser beam at least partially overlapping the fluid light path or an emitted light receiver adapted to receive light emitted by a heated material at least partially through the fluid light path.
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Accused Products
Abstract
A system and method of drilling and/or perforating uses a laser beam to remove material, such as to perforate the casing, cement and formation or drill a well bore. The system and method can further or alternately encompass material analysis that can be performed without removing the material from the well bore. The analysis can be performed apart from or in connection with drilling operations and/or perforating the casing, cement and formation. The analysis can be used in a feed back loop to adjust material removal, adjust material analysis, determine the location of future material removal, and for other uses.
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Citations
27 Claims
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1. A system for use in transmitting light in a well bore, comprising:
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a seal adapted to substantially seal circumferentially around the well bore, and when substantially sealing, define an end of an isolated zone of the well bore; a fluid light path comprising a fluid supplied into the isolated zone, the fluid adapted to displace less optically transmissive fluid residing in the well bore; and at least one of a laser device adapted to output a laser beam at least partially overlapping the fluid light path or an emitted light receiver adapted to receive light emitted by a heated material at least partially through the fluid light path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of communicating light between a device positioned in a well bore and the earth formation, the method comprising:
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actuating a seal in the well bore to define an end of an isolated zone of the wellbore; receiving an optically transmissive fluid in the isolated zone and displacing less optically transmissive fluid residing in the well bore; and transmitting light between the earth formation and the device through the optically transmissive fluid. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A system for use in transmitting light in a well bore, comprising:
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a seal adapted to substantially seal circumferentially around the well bore, and when substantially sealing, define an end of an isolated zone of the well bore; a fluid light path comprising a fluid supplied into the isolated zone, the fluid adapted to displace less optically transmissive fluid residing in the well bore; and a second seal adapted to substantially seal circumferentially around the well bore, and being axially offset from the first mentioned seal, wherein the fluid light path comprises a fluid supplied into the isolated zone between the seals.
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25. A system for use in transmitting light in a well bore, comprising:
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a seal adapted to substantially seal circumferentially around the well bore, and when substantially sealing, define an end of an isolated zone of the well bore; a fluid light path comprising a fluid supplied into the isolated zone, the fluid adapted to displace less optically transmissive fluid residing in the well bore; a laser device adapted to output a laser beam; and a fiber optic array comprising a plurality of optical fibers arranged to receive the laser beam.
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26. A method of communicating light between a device positioned in a well bore and the earth formation, the method comprising:
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actuating a seal in the well bore to define an end of an isolated zone of the wellbore; receiving an optically transmissive fluid in the isolated zone and displacing less optically transmissive fluid residing in the well bore; transmitting light between the earth formation and the device with the optically transmissive fluid; and actuating a second seal axially offset from the first mentioned seal to define a second end of the isolated zone of the well bore.
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27. A method of communicating light between a device positioned in a well bore and the earth formation, the method comprising:
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actuating a seal in the well bore to define an end of an isolated zone of the wellbore; receiving an optically transmissive fluid in the isolated zone and displacing less optically transmissive fluid residing in the well bore; and transmitting light between the earth formation and the device with the optically transmissive fluid, wherein transmitting light comprises directing the light through a fiber optic array comprising a plurality of optical fibers.
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Specification