Autonomous Seismic Data Acquisition Unit
First Claim
1. A seismic data acquisition apparatus comprising:
- a) a memory;
b) a seismic sensor;
c) a temperature sensor;
d) a processor;
e) a plurality of digitally controlled temperature-compensated crystal oscillator (DC-TCXO) associated with a real-time clock; and
f) a data input/output interface.
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Accused Products
Abstract
A method, apparatus and system for acquiring land seismic data includes acquiring seismic data with a first autonomous seismic data acquisition unit and a second autonomous seismic data acquisition unit wherein each acquisition unit comprises a plurality of digitally controlled temperature-compensated crystal oscillators. Oscillator-based timing signals are acquired that are associated with the plurality of digitally controlled temperature-compensated crystal oscillators and a time correction is determined to apply to the seismic data acquired with the first autonomous seismic data acquisition unit. The time correction is determined using the oscillator-based timing signals from the first and second autonomous seismic data acquisition units.
49 Citations
20 Claims
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1. A seismic data acquisition apparatus comprising:
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a) a memory; b) a seismic sensor; c) a temperature sensor; d) a processor; e) a plurality of digitally controlled temperature-compensated crystal oscillator (DC-TCXO) associated with a real-time clock; and f) a data input/output interface. - View Dependent Claims (2, 3, 4, 5)
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6. A method for acquiring seismic data comprising:
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a) acquiring seismic data with a first autonomous seismic data acquisition unit and a second autonomous seismic data acquisition unit wherein each acquisition unit comprises a plurality of digitally controlled temperature-compensated crystal oscillators; b) acquiring oscillator-based timing signals associated with the plurality of digitally controlled temperature-compensated crystal oscillators; and c) determining a time correction to apply to the seismic data acquired with the first autonomous seismic data acquisition unit, the correction determined using the oscillator-based timing signals from the first and second autonomous seismic data acquisition units. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method for recording seismic data comprising:
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a) deploying a first and second autonomous seismic data acquisition unit for acquiring seismic signals; b) deploying a plurality of digitally controlled temperature-compensated crystal oscillators with the first and second autonomous seismic data acquisition unit to generate oscillator-based timing signals; c) using the oscillator-based timing signal to determine a time correction to apply to the seismic data acquired with the first autonomous seismic data acquisition unit based on the oscillator-based timing signals from the first and second autonomous seismic data acquisition units; and d) applying the determined time correction to the seismic data. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification