SEISMIC ACQUISITION SYSTEM INCLUDING A DISTRIBUTED SENSOR HAVING AN OPTICAL FIBER
First Claim
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1. A seismic acquisition system, comprising:
- a distributed optical sensor having an optical fiber for positioning outside a subterranean structure to be surveyed; and
an interrogation subsystem configured to;
generate a light signal to emit into the optical fiber;
receive, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from the subterranean structure and noise; and
output data corresponding to the backscattered light to a processing subsystem to determine a characteristic of the subterranean structure.
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Abstract
A seismic acquisition system includes a distributed optical sensor (having an optical fiber) and an interrogation subsystem configured to generate a light signal to emit into the optical fiber. The interrogation subsystem receives, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from a subterranean structure and noise. Output data corresponding to the backscattered light is provided to a processing subsystem to determine a characteristic of the subterranean structure.
24 Citations
21 Claims
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1. A seismic acquisition system, comprising:
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a distributed optical sensor having an optical fiber for positioning outside a subterranean structure to be surveyed; and an interrogation subsystem configured to; generate a light signal to emit into the optical fiber; receive, from the distributed optical sensor, backscattered light responsive to the emitted light signal, wherein the backscattered light is affected by one or both of seismic signals reflected from the subterranean structure and noise; and output data corresponding to the backscattered light to a processing subsystem to determine a characteristic of the subterranean structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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providing a distributed optical sensor having an optical fiber for performing a seismic survey of a subterranean structure; emitting light into the optical fiber; receiving backscattered light responsive to the emitted light from the optical fiber, wherein the backscattered light is affected by noise; and processing, by a processing subsystem, data relating to the backscattered light, wherein the data relating to the backscattered light represents one of;
(1) the noise, (2) the noise and seismic signals reflected from the subterranean structure, and (3) the seismic signals reflected from the subterranean structure with the noise attenuated. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification