Seismic timing control system
AssigneeWestern Geophysical Company of America
InventorBen B. Thigpen
Life of this patent
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Abstract
A method for optimizing the acoustic signal-to-noise ratio during a useful maximal-length recording cycle within the time frame of a minimal-length recording episode. To implement the method, during an intermittent-tow seismic operation, the noise level due to cable manipulation during an entire recording episode is monitored. A quiet-window of a desired length is established by adjusting the length of the interval during which the seismic cable is at rest. The initiation of a recording cycle is adjusted relative to the quiet window to take maximum advantage of the quiet period.
Claims3
In an intermittent-tow seismic exploration operation wherein a seismic detector cable is towed in a body of water behind a ship and is manipulated in a timed sequence of events during a recording episode, a method for initiating a recording cycle, comprising the steps of:
- continuously measuring and displaying the RMS cable-noise level during a recording episode;
- establishing a desired steady-state cable-noise quiet-window said recording episode;
- positioning the start of a recording cycle with respect to said quiet window to optimize the acoustic signal-to-noise ratio during a useful maximal-length recording cycle within the time frame of a minimal-length recording episode.
Dependencies are inferred from the claim text.