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US 10,627,534 B2Granted
Reconnaissance marine seismic surveys having reduced density of sail lines
AssigneeION Geophysical Corporation
InventorNikolaos Bernitsas
Life of this patent
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Abstract
Methods, systems, and apparatuses are disclosed for conducting reconnaissance marine seismic surveys. In one example method of acquiring a marine seismic survey, a plurality of streamers are towed behind an acquisition vessel, the plurality of streamers defining a swath. A source is towed behind the acquisition vessel, and at least one other source is towed outside of the swath of streamers.
Claims25
A method of acquiring a marine seismic survey, comprising:
- towing a plurality of streamers behind an acquisition vessel, the plurality of streamers defining a swath over a first region;
- towing at least a first seismic energy source behind the acquisition vessel;
- acquiring first seismic survey data resulting from the first seismic energy source for a central region located within the first region;
- towing at least a second seismic energy source outside of the swath of streamers;
- acquiring second seismic survey data resulting from the second seismic energy source for a first side region that includes a portion of the first region and extends outside of the first region, wherein the second seismic survey data is more sparse than the first seismic survey data based at least in part on the second seismic energy source being towed outside of the swath of streamers;
- and
- generating the marine seismic survey for a combined central and first side regions by combining the first seismic survey data and the second seismic survey data.
4 more elements
A method of acquiring a marine seismic survey, comprising:
- towing a plurality of streamers behind an acquisition vessel along a first sail line, the plurality of streamers defining a swath over a first region;
- towing a first seismic energy source behind the acquisition vessel;
- acquiring first seismic survey data resulting from the first seismic energy source for a first central region located within the first region;
- towing a second seismic energy source outside of and to a first side of the swath of streamers;
- acquiring second seismic survey data resulting from the second seismic energy source for a first side region that includes a portion of the first region and extends outside of the first region, wherein the second seismic survey data is more sparse than the first seismic survey data based at least in part on the second seismic energy source being towed outside of the swath of streamers;
- towing a third seismic energy source outside of and to a second side of the swath of streamers;
- acquiring third seismic survey data resulting from the third seismic energy source for a second side region that includes a portion of the first region and extends outside of the first region, wherein the third seismic survey data is more sparse than the first seismic survey data based at least in part on the third seismic energy source being towed outside of the swath of streamers;
- and
- generating the marine seismic survey for a combined first central, first side, and second side regions by combining the first seismic survey data, the second seismic survey data, and the third seismic survey data.
6 more elements
A non-transitory computer-readable medium storing code for acquiring a marine seismic survey, the code comprising instructions executable to:
- tow a plurality of streamers behind an acquisition vessel, the plurality of streamers defining a swath over a first region;
- tow at least a first seismic energy source behind the acquisition vessel;
- acquire first seismic survey data resulting from the first seismic energy source for a central region located within the first region;
- tow at least a second seismic energy source outside of the swath of streamers;
- acquire second seismic survey data resulting from the second seismic energy source for a first side region that includes a portion of the first region and extends outside of the first region, wherein the second seismic survey data is more sparse than the first seismic survey data based at least in part on the second seismic energy source being towed outside of the swath of streamers;
- and
- generate the marine seismic survey for a combined central and first side regions by combining the first seismic survey data and the second seismic survey data.
4 more elements
Dependencies are inferred from the claim text.