Deep-water Coral Reefs

Acoustic recognition and geological setting
Cold water coral reefs, notably the stone coral Lophelia pertusa, have been found extensively in deep Arctic waters such as the Norwegian Sea. The use of multibeam echosounding, together with advanced visualisation and analysis tools, has been a key to many spectacular discoveries. The world's largest cold water coral reef - the Røst Reef - was mapped in detail in October 2002. Located in the dramatic setting of a large submarine slide, this provides an excellent example of how catastrophic geological processes can create special marine habitats. Another major reef complex - the Sula Reef - demonstrates how mounds select... (read more)
2008-01-01 01:00:00

GEBCO and Deep Water

Data Assembler, Converter, Interpreter and Disseminator
GEBCO uses deepwater survey data to produce bathymetry maps and grids. Published maps appear complete but are in fact based on very little data. Only a portion of the deep data that could potentially be put to use is contributed to the public domain. All would benefit were more data submitted to data centres. BackgroundWhile the general public thinks that all the seafloor has been mapped and many hydrographers and ocean scientists accept published maps and datasets as faithful representations of the deep-sea floor, in reality only a small percentage of the seafloor has ever been directly measured; estimates range... (read more)
2007-03-02 12:00:00

Deep-water Industry Event

The "mce Deepwater Development" 2009 technical conference is, for the first time, to be held in Copenhagen (Denmark). It features a packed technical programme and is supported by an exhibition showcasing the world's major companies operating within the deepwater sector.     Hosted by Maersk Oil and organised by Quest Offshore, this year's conference will see Maersk Oil's CEO, Thomas Thune Anderson, welcoming the international delegates and presenting the conference's keynote speech.   According to Quest Offshore, the current estimate of 2009 Global Deepwater Spend is USD164 billion, the oil price is hovering around USD40/bbl and major discoveries for example,... (read more)
2009-02-26 11:01:50

Deep-water Research Centre

Schlumberger has signed a joint cooperation agreement with the Universidade Federal do Rio de Janeiro (UFRJ) to build an international research centre on the university's campus. The agreement marks the first research and geosciences center to be located at UFRJ Technology Park. The partners will focus on research and development activities in the deep-water pre-salt environment.     The emphasis will be placed on the development of geosciences software for the exploration and production sector; new technologies to meet reservoir challenges in pre-salt environments; and the creation of a geophysical processing and interpretation Center of Excellence covering time-lapse seismic and... (read more)
2009-09-21 12:59:25

Deep-water Black-box Retrieval

A Game of Hunt-the-pinger Against the Clock
Restricted operating life, limited range and bearing ambiguity in deep water are the known limitations of current locator beacons mounted on aircraft. These problems raise important questions: what is the best method of locating existing pingers and what can replace them? In deep water, pinger detection equipment could be installed on a submarine. Alternatively, a transponder beacon can provide both range and bearing information, as well as demonstrate a significantly longer listening life. Although heavier and therefore not suitable for light aircraft, commercial aircraft could easily accommodate such beacons allowing easier retrieval of the aircraft black boxes. In the July/August... (read more)
2009-12-04 03:49:14

Oceaneering International Orders Six Deep-water DVLs

Rowe Technologies (USA) has received an order for six SeaPilot DVLs from Oceaneering International (USA). Rowe Technologies has also developed a 4,500-metre rated titanium SeaPilot DVL for deep-water deployments. The SeaPilot DVL provides a slightly smaller footprint when compared to other products in the market and also provides the industry's newest electronics platform. A leak detection sensor is integrated into the SeaPilot DVL .The leak sensor will provide ROV pilots with real time information on the status of the structural integrity of the DVL and will allow pilots the opportunity to shut down the DVL if the structural integrity is... (read more)
2014-08-26 12:34:45

Successful Deep Water Trials Alistar 3000

Further to a series of demonstrations conducted offshore Toulon, France, in December 2005 and March 2006, ECA has just completed 10-day deep water trials of Alistar 3000 AUV in GoM (Gulf of Mexico) for BP America Production Company. This trial was carried out as part of the BP Exploration and Production Technology Group field trial programme. Alistar 3000 is an Autonomous Underwater Vehicle (AUV) able to carry out pre-programmed inspection missions in deep water without need of a physical link to the surface. The deep water trials took place with the local support of ECA's partner in the USA, Harvey... (read more)
2006-09-06 12:00:00

From Test Tank to Deep Water

Sub-sea inspection using autonomous underwater vehicle (SPINAV)
SPINAV is an ongoing Joint Industry Project that is moving cutting-edge autonomous inspection technology from proof-of-concept trials in the test tank (completed November 2004) to an offshore trial using an unmodified commercial work-class ROV or AUV of opportunity. This article reviews the background to the technology and discusses details of the development process and wet trials. The initial part of this ongoing project, SPINAV-1, the proof-of-concept trial had several sponsors: BP, Subsea7, Conoco-Philips and the UK Government Department of Trade and Industry. SPINAV-2, the offshore work-up project, is now underway; started in July 2005 and running for twelve months, it... (read more)
2008-01-01 01:00:00

Deep-water Measurement Campaign Completed Offshore Portugal

A deep-water measurement campaign offshore Portugal has been completed by Metocean Services International (MSI), having achieved 100% data return across multiple mooring locations. MSI was contracted by Calecore, on behalf of Repsol, to profile currents at two separate locations in over 750m water depth. This project marks the first time the company has worked in Portuguese waters. The moorings consisted of multiple ADCPs and Aquadopp current meters, spaced across the full depth of the water column, in order to provide a high-resolution image of the complex current interactions at each location. Deployment took place from Calecore’s multi-role vessel Kommandor Calum... (read more)
2014-10-14 12:00:00

Sub-sea Global Fixing in Deep Water

Currently, the precision of sub-sea global positioning (of UUV and ROV) in deep water is considered to be lagging behind the precision and functionality of GPS-based surface positioning offshore. This is particularly apparent in the operationally favourable combination of high precision and concurrent geographical flexibility. For oil and gas-related offshore construction activities, the technical requirements (including positioning) of seabed documentation are today - in theory - irrespective of water depth, i.e. what is presently required (and achievable) in 300m will also be wanted in 3,000m water depth. But achieving this at 3,000m will still encounter technological, operational and resource related,... (read more)
2008-01-01 01:00:00
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