Integrated fiber optic monitoring system for a wellsite and method of using same
First Claim
1. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
- a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing;
a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and
a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein said housing has an internal channel and external slots and wherein said floating fibers are disposed in said channel and said fixed fibers are disposed in said slots.
2 Assignments
0 Petitions
Accused Products
Abstract
Integrated fiber optic monitoring techniques for a wellsite are provided. A fiber optic cable is provided with a tubular housing having a channel and a plurality of slots, a plurality of optical fibers may be floatingly positionable in the channel for measuring at least one first wellsite parameter and a plurality of optical fibers fixedly may be positionable in each of the slots for measuring at least one second wellsite parameter. The tubular housing is positionable into a wellbore adjacent a tubing therein. Pairs of the fixed and floating optical fibers may be spliced together to perform Stimulated Brillouin measurements.
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Citations
15 Claims
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1. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein said housing has an internal channel and external slots and wherein said floating fibers are disposed in said channel and said fixed fibers are disposed in said slots. - View Dependent Claims (2)
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3. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein at least one of the plurality of floating optical fibers is coupled to a sensor for measuring the at least one wellsite parameter.
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4. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein pairs of the plurality of fixed optical fibers and the plurality of floating optical fibers are selectively coupled whereby an optical loop is formed for transmitting therebetween.
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5. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein the plurality of fixed optical fibers measure at least one wellsite parameter using one of Stimulated Brillouin techniques, Fiber Bragg Gratings, distributed acoustic sensing (DAS) measurements and combinations thereof.
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6. An integrated fiber optic cable for a wellsite having a tubing positionable in a wellbore extending into a subterranean formation, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable into the wellbore adjacent the tubing; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; and a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter, wherein the floating optical fibers are disposed in a gel and the fixed optical fibers are adhered to the housing. - View Dependent Claims (7)
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8. A fiber optic monitoring system for a wellsite, the fiber optic cable comprising:
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a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable at the wellsite; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter; and at least one surface interrogation unit operatively couplable to the fiber optic cable for sending optical signals into at least one of said floating and fixed optical fibers and receiving a return signal indicative of a measured wellsite parameter. - View Dependent Claims (9)
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10. A method of monitoring a wellsite, the method comprising:
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a) positioning a fiber optic cable at the wellsite, the fiber optic cable comprising; a tubular housing having at least one of either an internal longitudinal channel or a plurality of external longitudinal slots, the tubular housing positionable at the wellsite; a plurality of floating optical fibers floatingly positionable in at least one of said channel or slots for measuring at least one first wellsite parameter; a plurality of fixed optical fibers fixedly positionable in at least one of said channel or slots for measuring at least one second wellsite parameter; b) measuring at least one wellsite parameter by sending optical signals into at least one of said floating and fixed optical fibers and receiving a return signal indicative of a measured wellsite parameter; and c) transmitting the measured wellsite parameter to a surface interrogation unit. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification