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Patent
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G01V 1/28 (2006.01) G01V 1/38 (2006.01)
Patent
CA 1215769
CIRCULAR SEISMIC ACQUISITION SYSTEM Abstract of the Disclosure A marine seismic survey is disclosed in which a plurality of steerage centers are selected for circular traversal thereabout by a marine vessel towing a streamer cable. While the vessel and the streamer are following a circular track about a steerage center, the feathering of the cable creates a separate concentric track line for each of the mid-points between the receivers included in the cable and the source. In this manner an areal cover- age is assured which requires no reliance on unpredictable and uncontrollable currents for the desired feathering. An additional important feature of the current disclosure is that there is little wasted time in which the survey vessel moves outside of the overall surveyed area. A preferred course tracking for the vessel is to move from the arc of one steerage course line to another in tangential fashion.
459471
Meredith & Finlayson
Tensor Geophysical Service Corporation
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