Autonomous Underwater Vehicle (AUV) Survey and Inspection
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Autonomous Underwater Vehicle (AUV) Survey Services:
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C & C’s newest Autonomous Underwater Vehicle survey technology, C-Surveyor VI, incorporates an innovative payload that offers unique capabilities for the inspection of pipelines and subsea infrastructure. In addition to a side scan sonar, multibeam echosounder, and sub-bottom profiler, the C-Surveyor VI is integrated with a 3-D bathymetric laser, a camera photo mosaic system, a hydrocarbon detector, and a magnetometer.
The C-Surveyor VI captures three-dimensional "point cloud” renderings at five-millimeter resolution of pipelines, subsea infrastructure, and surrounding geomorphology. Combined with high-resolution photo mosaics, this innovative capability is used to inspect and document the survey life-cycles of pipelines and peripheral seafloor assets. Additional information on pipeline survey life-cycle management can be found at Pipeline 4D.
Geohazard Surveys
These surveys identify any conditions at the seabed or in the foundation zone where hazardous subsurface features or unstable soil conditions exist. C & C’s customized sensor suite provides unmatched data quality to identify potential geohazards including submarine landslides, debris flows, shallow gas accumulation, faults, mud volcanoes, and methane hydrates.
Pipeline Surveys
Pipeline surveys are performed to assess the seafloor and subsurface for geologic features and to identify any man-made hazards and obstructions that may impact potential archaeological resources, or have an adverse effect on the proposed pipeline activities. AUVs are ideal for pipeline route surveys due to their agility and efficiency. AUV survey data is developed into reports and alignment sheets for pipeline, flowline, and umbilical routing. Learn about C & C's Pipeline 4D services.
As-Built Surveys
As-built surveys verify the condition of the pipeline shortly after its construction. Periodic inspection surveys reduce risk by providing documented evidence of the existence or absence of spans, cathode erosion, leaks, movement, and damage. C & C provides cost-effective deepwater AUV pipeline inspection surveys with engineering quality 3-D bathymetric laser data and high-resolution photo mosaics.Learn about C & C's Pipeline 4D services.
Block Studies
AUV surveys are conducted in the deepwater Gulf of Mexico prior to any operations involving oil and gas exploration and production. This data is used for archaeological assessments and to identify seafloor and subsurface features that may have an adverse effect on drilling operations. Potential geological surface hazards may include faults, gas vents, surface channels, furrows, sinkholes, hydrate mounds, unstable slopes, and reefs. Subsurface geologic hazards may include gas-charged sediments, faults shallow-water flow, and buried channels.
Archaeological Assessment Surveys
Historic Marine Archaeological Assessments are required in the Gulf of Mexico where proposed bottom-disturbing activities may impact submerged archaeological resources including pipeline, flowline, umbilical, anchor, and platform placement. C & C’s AUVs meet or exceed archaeological assessment data requirements and offer advanced onboard sensor options should further investigation be warranted.
Unique sensors complement C & C's standard AUV payload suite. These include abathymetric 3-D laser, a camera photo mosaic system, and a magnetometer. The bathymetric laser collects high-density 3-D point cloud data at a resolution of five millimeters. The camera photo mosaicing system delivers photomosaics with rapid view, zoom, and search capabilities. A magnetometer detects ferrous objects, which is beneficial data for marine archaeological assessments.
Archaeological Site Surveys
Sites of known archaeological significance are mapped and documented in unparalleled detail and precision with C & C’s new AUV sensor suite, which includes:
- 3-D laser bathymetry
- Camera mosaicing
- Magnetometer
- Side scan sonar
- Sub-bottom profiler
- Multibeam bathymetry
Correlating these complementary data sets provides accurate identification and verification of site artifacts, debris field mapping, and precise target measurements.
Government and Academic Surveys
C & C’s AUVs have been employed for a variety of government and academic survey projects. These include scientific expeditions for NOAA's Office of Ocean Exploration to perform deepwater coral mapping, historic shipwreck surveys, and geotechnical investigations. Notable AUV projects include detailed mapping of the German Submarine U-166 in the Gulf of Mexico, locating the historic HMS Ark Royal near Gibraltar, and finding two missing aircraft lost off the archipelago of Los Roques, Venezuela, one of which was carrying Italian fashion design CEO Vittoio Missoni and his wife Maurizia Castiglioni.
Deepwater Benthic Community Surveys
AUV camera assessments provide ground-truthing of deepwater benthic communities to identify and localize, or disprove, their presence. Deepwater benthic communities may include clams, mussels, tubeworms, and other organisms that thrive in the absence of sunlight.
C & C's Autonomous Underwater Vehicle provides documented assessments of deepwater benthic communities, which meet or exceed regulatory requirements to maximize leaseholders' development options
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