Acquiring near-zero offset survey data
AssigneeWesternGeco L.L.C.
InventorsHENK KEERS, ASLAUG STROEMMEN MELBOE, JON-FREDRIK HOPPERSTAD, JOHAN O.A. ROBERTSSON, JULIAN EDWARD KRAGH, MORTEN SVENDSEN, LUREN YANG, SVEIN ARNE FRIVIK
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Abstract
To acquire near-zero offset survey data, a survey source and a first streamer attached to the survey source are provided, where the first streamer has at least one survey receiver. A second streamer separate from the survey source and the first streamer includes survey receivers. Near-zero offset data is measured using the at least one survey receiver of the first streamer.
Claims10
A system to perform marine surveying, comprising:
- a marine vessel;
- a survey source towed by the marine vessel;
- a mini-streamer attached to the survey source, wherein the mini-streamer includes at least one survey receiver;
- and
- a main streamer towed by the marine vessel, wherein the main streamer has a plurality of survey receivers, and the main streamer is separate from the survey source and the mini-streamer,
- wherein the at least one survey receiver of the mini-streamer is configured to measure near-zero offset data.
An article comprising at least one computer-readable storage medium containing instructions that when executed cause a computer to:
- receive near-zero offset data from a survey receiver of a first streamer attached to a first survey source;
- receive measurement data from survey receivers of a second streamer separate from the first streamer and the first survey source;
- and
- process the measurement data from the survey receivers of the first streamer and second streamer.
An apparatus comprising:
- a survey source;
- a first streamer attached to the survey source, the first streamer having at least one survey receiver to measure near-zero offset data;
- and
- a second streamer having a length greater than the first streamer, the second streamer having survey receivers to receive survey measurement data.
Dependencies are inferred from the claim text.