Long offset acquisition

Abstract

A vessel is configured to tow a marine seismic source, a spread of standard-offset streamers, and a long-offset streamer in a manner such that: a standard streamer maximum offset, measured from the at least one source to an aft-most receiver in the standard-offset streamers, is not more than 20 km; and a long-offset streamer maximum offset, measured between the at least one source and an aft-most receiver in the long-offset streamer, is longer than the standard streamer maximum offset and is between 12 km and 40 km. In some embodiments, the long-offset streamer and the standard-offset streamers are coupled to a same spreader line. In other embodiments, the long-offset streamer is coupled to the vessel by a long-offset lead-in line. In still other embodiments, the standard-offset streamers are coupled to a first spreader line, and the long-offset streamer is coupled to a second spreader line disposed aft of the first spreader line.

Dependencies are inferred from the claim text.