Displaying items by tag: seismic survey
#MARINE WARNING - Shell E&P Ireland Limited is scheduled to carry out a 3D seismic survey off the west coast of Ireland over the Corrib Gas Field.
The planned start date of the survey is 1 June 2012 and, weather permitting, the survey should be completed around the middle of September 2012.
The seismic acquisition will comprise a two-boat operation; the M/V Ocean Pearl (call sign: LAGD6) will lay the ocean bottom cables on the seafloor and will collect all data records, while the M/V Malene Ostervold (call sign: LCIU3) will serve as the source vessel. In addition to the seismic vessels, a third vessel will act as a guard vessel.
Seismic acquisition will occur over a set of six active 12km long solid ocean bottom cables laid 400m apart on the sea bed at a depth of 350m by the M/V Ocean Pearl. At the end of each cable is a 1km lead-in section which is attached to a standalone buoy at surface. These buoys contain a power pack as well as a recording system.
Each buoy contains a radio-link with the cable-laying vessel for remote control of the buoy and for data quality control. Each buoy has a GPS receiver, so its location is well known to both seismic vessels. One by one these cables are 'rolled along', ie picked up from the northern edge of the active spread, and redeployed at the southern edge.
The M/V Malene Ostervold will be towing two seismic sources, and operating around the set of six active 12km long cables.
Radio navigation warnings will be given out daily by the Irish Coast Guard, giving the co-ordinates of the centre point of the working area for that day. All vessels will be listening on VHF Channel 16 throughout the project.
All vessels, particularly those engaged in fishing, are requested to give the seismic vessels a wide berth and keep a sharp lookout in the relevant areas.
Complete details including co-ordinates of the work area are included in Marine Notice No 17 of 2012, a PDF of which is available to read and download HERE.
#DALKEY ISLAND PROSPECT - An online petition organised by Protect Our Coast in protest over plans by Providence Resources to start exploratory drilling for oil and gas off Dalkey Island, in south Co. Dublin, has reached over 2,000 signatures to date, including support from overseas.
Providence Resources are seeking permission from the Department of Environment for a foreshore licence to carry out site investigation and drill testing in waters depths of 20-30m in the Kish Bank Basin, at the Dalkey Island 'Prospect'.
They propose drilling one exploratory well some 6kms offshore, though the exact location chosen for the well site is subject to results of seismic surveys. This particularly area lies closer to the coastline, as it is on the more westerly fringes of the exploratory block (33-21) zone.
The campaigners object to the proximity of the well site off Dalkey Island which is designated a Special Protection Area (SPA). The island is home to a resident herd of goats, is rich in birdlife, seals and cetaceans, notably bottlenose dolphins in neighbouring Killiney Bay, which have drawn recent media attention and aided the objectives of the campaign, see www.protectourcoast.net
In addition they oppose the drilling location given its closeness to a large urban population and the risk of an oil-spill and consequent effects to humans and the environment throughout Dublin Bay.
If granted, exploratory work is due to start this year, with Providence claiming the entire process would take up to six months, between survey and drilling operations. During part of that timeframe, up to two seismic vessels will be employed, prior to deploying a 'jack-up' rig to the well site.
Should the oil be commercially viable, the benefits of becoming self-sufficient and security of supply would be of significant economic benefit to Ireland. To date 100% of the country's oil and 95% of its gas is currently imported, and yet most of Ireland's natural resources are unexplored, according to Providence Resources.
Exploration is an expensive exercise and has no guarantee of discovery while the timeframe from discovery to production can typically take five to seven years.
"Yet," say Providence Resources, "the implications of discovering and utilising such a natural resource, and potentially becoming self-sufficient in energy terms, would be of significant economic benefit for Ireland Inc. in terms of taxation, employment, security of supply and skills development."
To read more information about Dalkey Island Prospect from Providence Resources, with maps, montages (including views from White Rock Beach) newsletters and video presentation visit www.providenceresources.com/dalkeyisland.aspx
As previously reported on Afloat.ie, the application for the foreshore license is currently on view in Dalkey and Dun Laoghaire Garda stations. The application contains maps, plans, and drawings which can be inspected, noting the public consultation process ends on Thursday 2nd February 2012.
In addition for information from the Department of Environment's website, click HERE. Those wishing to make an objection or representation of the sought license should make submissions to the Foreshore Unit of the department on close of business (also) on Thursday 2nd February 2012.
- Dalkey Island Prospect
- Dublin Bay News
- Providence Resources
- Protect Our Coast
- Dublin Bay Oil drilling
- Killiney Bay
- Dalkey Island
- Dalkey Island Goats
- Dalkey Dolphins
- Department of the Environment
- Foreshore License
- White Rock Beach
- Killiney Beach
- Kish Bank Basin
- Special Protection Area
- JackUp rig
- seismic survey
- Irish economy
- Online petition
- Well Site
- Exploratory Well Kish Bank Basin
- bottlenose dolphins
The latest Marine Notice from the DTTAS advises all seafarers off the south coast in the North Celtic Sea to give a wide berth to vessels conducting a 3D seismic survey next month.
The M/V Polarcus Samus (callsign C6XK8) will carry out the work over a three-week period commencing on 4 June.
The vessel will be accompanied by guard vessels M/V Nomad (EI5298), 4-Winds (HO3497) and Bravo Topaz (ZDKAP) and will be restricted in her ability to move while conducting the survey.
All vessels will be listening on VHF channel 16 throughout the survey.
Details of co-ordinates are included in a PDF of Marine Notice No 30 of 2011, which is available to read or download HERE.
The Department of Transport's latest marine notice advises seafarers off the west coast to keep a lookout while a 3D seismic survey is conducted over the next three weeks.
The vessel M/V Ramform Vanguard that will carry out the work will be towing 10 streamers 6km long and will have a minimum turning radius of 3km.
Due to this restriction in manoeuvrability, all boats in the area are requested to give the vessel a wide berth.
The vessel's planned locations are listed in the PDF of Marine Notice No 24 of 2011, which is available to read or download HERE.