Triggering distributed acoustic sensing downhole using an active fiber stretcher assembly

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United States of America Patent

PATENT NO 11977195
APP PUB NO 20230020858A1
SERIAL NO

17620269

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
HALLIBURTON ENERGY SERVICES INCP O BOX 819052 LEGAL INTELLECTUAL PROPERTY DEPARTMENT DALLAS TX 75381

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bland, Henry Clifford Calgary, CA 14 84
Ellmauthaler, Andreas Houston, US 43 362
LeBlanc, Michel Joseph Houston, US 54 228
Willis, Mark Elliott Katy, US 38 288
Wu, Xiang Singapore, SG 156 565

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