| CPC G01H 9/004 (2013.01) [G01V 1/226 (2013.01); G01V 8/16 (2013.01)] | 16 Claims |
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1. A system, comprising:
a hybrid sensor array configured to be deployed in a borehole environment, wherein the hybrid sensor array comprises a plurality of fiber-optic sensors and a plurality of particle motion sensors, wherein the plurality of fiber-optic sensors is configured to measure strain fields in response to a seismic wavefield traveling along the hybrid sensor array, wherein the plurality of particle motion sensors is configured to measure particle motions in response to the seismic wavefield, and wherein the seismic wavefield is produced by a seismic source; and
a control system comprising an interrogator, a seismic recorder, a memory, and one or more processors, wherein the interrogator comprises a light source and a light recorder, wherein the light source is configured to provide source light signals for the plurality of fiber-optic sensors, wherein the light recorder is configured to receive light signals associated with measured strain fields from the plurality of fiber-optic sensors and convert the light signals into fiber sensor data, wherein the seismic recorder is configured to receive and convert the particle motions into particle motion data, and wherein the memory stores instructions that, when executed by the one or more processors, cause the one or more processors to:
receive the fiber sensor data from the light recorder;
receive the particle motion data from the seismic recorder;
estimate calibrated strain data based on the fiber sensor data and the particle motion data;
estimate first particle velocity data based on the calibrated strain data;
merge the first particle velocity data and the particle motion data into second particle velocity data;
process the second particle velocity data as single-component particle motion data; and
output the second particle velocity data as the single-component particle motion data.
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