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TRIGGERING DISTRIBUTED ACOUSTIC SENSING DOWNHOLE USING AN ACTIVE FIBER STRETCHER ASSEMBLY
TRIGGERING DISTRIBUTED ACOUSTIC SENSING DOWNHOLE USING AN ACTIVE FIBER STRETCHER ASSEMBLY
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机译:使用有源光纤担架组件触发井下井下的分布式声学感应
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摘要
An active fiber stretcher assembly can be used for data acquisition systems. A time-break signal can be detected that coincides with a seismic event emitted from a seismic controller. A predetermined waveform can be generated in response to detecting the time-break signal. The predetermined waveform may be encoded onto a fiber optic cable using a fiber stretcher. A data acquisition system connected to the fiber optic cable may detect the predetermined waveform on the fiber optic cable and initiate acquisition operations including: receiving, during the seismic event, light signals returning from a portion of the fiber optic cable in a subterranean environment; determining one or more characteristics of the subterranean environment from the light signals; and storing the one or more characteristics.
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