Method and device for monitoring the subsoil of the earth under a target zone
AssigneeSercel
InventorsThomas Bardainne, Baptiste Rondeleux
Life of this patent
Estimating the term…
Abstract
In order to monitor the subsoil of the earth under a target zone, seismic waves coming from an identified mobile noise source are recorded by means of at least one pair of sensors disposed on either side of the target zone, time periods are selected corresponding to the alignments of the pairs of sensors with the noise source, a seismogram of the target zone is reconstructed by interferometry based on the recorded seismic waves and on the selected time periods and an image of the subsoil of the target zone is generated using the seismogram.
Claims19
A method for monitoring the subsoil of the earth under a target zone, the method comprising:
- recording for a period of time, with a pair of sensors, which are located on opposite sides of the target zone, seismic waves coming from an identified and mobile source of seismic noise, wherein the period of time is defined by a first moment in time, when a first point of contact between the source and the earth is on a straight line passing through a barycenter of the pair of sensors, and a second moment in time, when a last point of contact between the source and the earth is on the straight line;
- reconstructing a seismogram of the target zone by interferometry based on said recorded seismic waves and the period of time;
- and
- generating an image of the subsoil under the target zone using the seismogram for detecting an underground anomaly.
A device for monitoring the subsoil of the earth under a target zone, the device comprising:
- a pair of sensors located on opposite sides of the target zone, the pair of sensors being configured to record, for a period of time, seismic waves coming from an identified and mobile source of seismic noise, wherein the period of time is defined by a first moment in time, when a first point of contact between the source and the earth is on a straight line passing through a barycenter of the pair of sensors, and a second moment in time, when a last point of contact between the source and the earth is on the straight line;
- and
- a module configured to reconstruct a seismogram of the target zone by interferometry based on the recorded seismic waves and the period of time, and to generate an image of the subsoil under the target zone using the seismogram for detecting an underground anomaly.
Dependencies are inferred from the claim text.