A system comprising a plurality of unmanned tow vessels 302a-d including a first vessel towing one or more source element (116, fig 1) and a second vessel towing one or more streamers (120, fig 1). Vessels traverse a first sail path 316 in an ordered formation, actuating the source(s) and collecting data via the streamer(s). Vessels turn towards a second sail path 318, which they traverse in a second, differently ordered formation, actuating the source element(s) and collecting data via the streamer(s). During the first formation vessels may be aligned in a direction perpendicular to the sail path. First and second formations may be mirror images. Fig 4 shows another aspect wherein unmanned tow vessels 402 are positioned in a crossline direction, having one or more streamers and source elements 404, comprising different numbers of, but at least one low (404c) and at least one high frequency source (404a). Fig 4 shows another aspect wherein there is at least one mid (404b), high (404a) and low (404c) frequency source(s), which are towed at different source densities with the low-frequency source(s) being towed at a lower source density than at least one of the mid or high frequency sources.
Performing geophysical surveys using unmanned tow vessels
16.08.2017
Patent
Elektronische Ressource
Englisch
PERFORMING GEOPHYSICAL SURVEYS USING UNMANNED TOW VESSELS
Europäisches Patentamt | 2020
|Performing geophysical surveys using unmanned tow vessels
Europäisches Patentamt | 2019
|Performing geophysical surveys using unmanned tow vessels
Europäisches Patentamt | 2018
|PERFORMING GEOPHYSICAL SURVEYS USING UNMANNED TOW VESSELS
Europäisches Patentamt | 2018
|3D HIGH-RESOLUTION GEOPHYSICAL SURVEYS
British Library Online Contents | 2012
|