String of Sensor Assemblies Having a Seismic Sensor and Pressure Sensor
First Claim
1. An apparatus comprising:
- an electrical medium; and
a string of sensor assemblies having corresponding outputs connected to the electrical medium, wherein at least one of the sensor assemblies includes;
a seismic sensor to measure seismic waves propagated through a subterranean structure;
a pressure sensor;
at least one matching circuit connected to an output of at least one of the seismic sensor and pressure sensor, wherein the at least one matching circuit is configured to suppress noise,wherein an output signal of the at least one matching circuit is connected to the electrical medium to produce a combined signal that is representative of characteristics of the subterranean structure and in which the noise is suppressed.
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Accused Products
Abstract
A system includes an electrical medium and a string of sensor assemblies having corresponding outputs connected to the electrical medium, where at least one of the sensor assemblies includes a seismic sensor to measure seismic waves propagated through a subterranean structure, and a pressure sensor. The sensor assembly further includes at least one matching circuit connected to an output of at least one of the seismic sensor and pressure sensor, where the at least one matching circuit is configured to suppress noise. An output signal of the at least one matching circuit is connected to the electrical medium to produce a combined signal that is representative of characteristics of the subterranean structure and in which the noise is suppressed.
61 Citations
21 Claims
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1. An apparatus comprising:
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an electrical medium; and a string of sensor assemblies having corresponding outputs connected to the electrical medium, wherein at least one of the sensor assemblies includes; a seismic sensor to measure seismic waves propagated through a subterranean structure; a pressure sensor; at least one matching circuit connected to an output of at least one of the seismic sensor and pressure sensor, wherein the at least one matching circuit is configured to suppress noise, wherein an output signal of the at least one matching circuit is connected to the electrical medium to produce a combined signal that is representative of characteristics of the subterranean structure and in which the noise is suppressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A sensor assembly comprising:
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a seismic sensor to measure seismic waves propagated through a subterranean structure; a pressure sensor; a first matching circuit connected to an output of the seismic sensor; a second matching circuit connected to an output of the pressure sensor; and a combining circuit configured to combine outputs of the first and second matching circuits to provide a combined signal, wherein the combined signal is representative of characteristics of the subterranean structure, and wherein noise experienced by the seismic sensor and pressure is suppressed in the combined signal. - View Dependent Claims (16, 17)
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18. A method comprising:
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deploying a string of sensor assemblies on a ground surface; connecting the sensor assemblies to an electrical medium; activating at least one seismic source; detecting seismic waves by seismic sensors in at least some of the sensor assemblies; detecting noise by at least one pressure sensor in at least one of the sensor assemblies; and combining an output of the at least one pressure sensor with an output of at least one of the seismic sensors to cause suppression of noise, wherein a matching circuit is provided to modify the output of the at least one pressure sensor or the output of the at least one seismic sensor to enable the noise suppression caused by the combining. - View Dependent Claims (19, 20, 21)
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Specification