Disclaimer National Offshore Petroleum Information Management System
Spatial Representation of Survey Data in NOPIMS
While every effort is made to ensure that surveys are correctly located on the map, their location is only an aid to search and discovery of survey data. Proper submitted navigation/position data associated with the survey should be used to correctly locate a survey.
Surveys are spatially represented in NOPIMS by their post-plot navigation (i.e. actual survey data acquired and not the planned or pre-plot navigation).
3D surveys are spatially represented by their full fold data polygon (i.e. actual seismic data coverage), if this is not available the four sided binning polygon will be used instead. This means that the data coverage for a survey will most likely be less than its spatial representation.
2D surveys are spatially represented by “ends-and-bends” lines derived from the P1/90 processed navigation. For some older surveys, or where proper P1/90 navigation is not available, the survey lines are derived from digitized maps or other navigation data of unknown source, but verified against other available information.
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