Corrib Gas Field

{{POV-check|date=December 2009}} The '''Corrib gas project''' ({{lang-ga|Tionscanamh Ghás Aiceanta na Coiribe.}}) entails the extraction of a [[natural gas]] deposit off the northwest coast of [[Ireland]]. The project includes a development of the Corrib gas field, and constructions of the natural gas pipeline and a gas processing plant. The project has attracted [[Corrib gas controversy|considerable opposition]]. ==History== The deepwater exploration licence No. 2/93 covering four blocks in the Slyne Trough was granted on 1 January 1993 for a period of 11 years to [[Enterprise Oil]] and its partners [[Saga Petroleum|Saga Petroleum Ireland Limited]], [[Statoil|Statoil Exploration (Ireland) Limited]], and [[Marathon Oil|Marathon International Petroleum Hibernia Limited]]. The licence was issued under the licensing terms for offshore oil and gas exploration and development 1992. The Corrib [[natural gas field]] was discovered in 1996. It was the first reported commercial natural gas discovery in Ireland since the [[Kinsale Head gas field]] was discovered in 1973. The first appraisal well was drilled in 1997. A number of consents and approvals to develop the Corrib Project were issued in 2001. In 2002, Enterprise Oil was acquired by [[Royal Dutch Shell]] who took over the operatorship of the project. Development of the project began in 2004, but it was delayed in 2005 when locals opposed the project. Shell announced the suspension of the project to facilitate further discussions with opposing parties. For a year, independent safety reviews were conducted to address various safety concerns in relation to the project. In 1999, Saga Petroleum became a part of [[Norsk Hydro]] and in 2007 a part of Statoil. In July 2009, [[Vermilion Energy]] acquired Marathon Oil's stake in the project. ==Development== Royal Dutch Shell proposed to develop the Corrib field as a sub-sea production facility with onshore processing. This method of development is claimed by Shell to be in line with best industry practice for gas fields of this type. The project includes development of offshore operations including the wells and subsea facilities, construction of offshore and onshore pipelines, and construction of onshore processing plant at [[Kilcommon|Bellanaboy]]. ===Gas field=== The Corrib gas field is located about {{convert|83|km}} off [[Erris Head]] in [[County Mayo]] in an area known as the [[Slyne-Erris Trough|Slyne Trough]] in water depths of {{convert|355|m}}. The gas is originating from [[Triassic]] Sandstone reservoir {{convert|3000|m}} below the seabed. Reserves in the field are believed to be about {{convert|1|Tcuft}}, 70% the volume of the Kinsale field. The natural gas in the Corrib Gas Field is a very pure form of gas, consisting of approximately 97% [[methane]] and [[ethane]]. The Corrib gas does not contain [[hydrogen sulfide]] and [[carbon dioxide]] makes up only 0.3% of the total amount of gas. The subsea production system is delivered by [[ABB Group|ABB]]. Production at the gas field will be remotely controlled from the Bellanaboy Bridge terminal. There are five production wells at the Corrib field drilled by [[Transocean]] Sedco 711 [[semi-submersible]] drilling rig. When in operation, each well is planned to have a so-called "christmas tree" structure above it that contains all control and monitoring equipment. Flexible individual flowlines will run from each well to a production manifold which will feed the gas into the main pipeline. There is no production platform installed in the field. ===Pipeline=== The pipeline from the Corrib field to the landfall at [[Glengad]] is planned to be approximately {{convert|83|km}} in length. The pipeline has a diameter of {{convert|20|in}} and it will operate at pressures of {{convert|90|–|110|bar}}. Work on the offshore section occurred in summer 2009 and involved over 7,000 lengths of pipe being welded together onboard the [[Solitaire (ship)|Solitaire]] pipelaying vessel. The onshore pipeline is still in the proposal phase but is expected to be some {{convert|9|km}} in length and run from landfall to the drying plant. ===Processing plant=== Gas will be processed at the processing plant {{convert|9|km}} inland near Bellanaboy Bridge. The purpose of the plant is to dry the gas and remove impurities. The plant has a capacity of 10 million standard cubic metres of purified gas per day. Processed gas will be fed to the [[Bord Gáis]] gas grid. The piping for the Onshore Processing Plant is manufactured by Phoenix Pipes Limited in Slane Co.Meath. ==Partners== [[Shell E&P Ireland]] is the operator of the project. The company holds 45% of equity. Other partners are Statoil Exploration (Ireland) Limited (36.5%), and the Vermilion Energy Trust (18.5% of equity). ==Controversy== {{Main|Corrib gas controversy}} [[Image:Gardaí, Corrib gas refinery, Erris, County Mayo.jpg|thumb|[[Gardaí]] guard the Bellanaboy terminal site from occupation by protesters]] Some opponents of the scheme cite concerns about the health, safety and environmental impact of the onshore aspects of the project. Others are concerned with alleged irregularities and precedents surrounding the project. Many groups, most notably the [[Rossport Five]] and [[Shell to Sea]] campaigns, oppose the current plans for the project, which they regard as dangerous despite assurances from Shell. A contrary position is taken by the group [[Pro Gas Mayo]]. There have been several films made about the project: * 'The Pipe' released 8 July 2010 at the Galway Film Festival and * 'Pipe Down' which was a prize winner at the Waterford Film Festival 2010 ====Pipeline route==== The upstream high pressure gas pipeline that will connect the wells to the inland processing site is planned to run through the area of [[Rossport]], close to local residences. A report by Dr. Richard Kupriewicz concluded that "the terrain makes escape routes for the clustered population essentially impossible in the event of a [pipeline] rupture". ====Discharges from drying process==== [[Broadhaven Bay]] is the proposed area to discharge toxic waste from the refining process Due to the bay’s circular tidal pattern and semi-enclosed nature this toxic waste is more likely to stay within the bay rather than be washed out to sea.{{Citation needed|date=September 2007}} ===Alleged violation of due process=== Planning permission was initially refused by Senior Planning Inspector Kevin Moore, of [[An Bord Pleanála]] (the Irish planning authority). His report stated in part: "[I]t is my submission that the proposed development of a large gas processing terminal at this rural, scenic, and unserviced area on a bogland hill some 8 kilometres inland from the Mayo coastland landfall location, with all its site development works difficulties, public safety concerns, adverse visual, ecological, and traffic impacts, and a range of other significant environmental impacts, defies any rational understanding of the term “sustainability”." In November 2009, An Bord Pleanála ordered Shell to redesign the pipeline and move its route away from homes saying it posed an "unacceptable risk". ==Tax== Claims of a tax yield of some €1.7 billion over the life of the field have been made by the Irish government based on data about the field's size and 2008 gas prices. Up to 2007, the Irish Petroleum Licensing Terms imposed a flat 25% income tax on gas production revenues. In August 2007, the top rate of tax on the most profitable fields was increased to 40%. The new licensing terms called for changes to the tax imposed based upon fields ' profit ratios (equal to the rate of profit less 25% divided by the accumulated level of capital investment). Where this ratio is greater than 4.5, an additional 15% tax was imposed, where it is between 3.0 and 4.5 an additional 10% was imposed and where the profit ratio is between 1.5 and 3.0, and additional 5% tax was added. Less profitable fields were not affected. ==Employment== The construction of the pipeline and plant is expected by Shell's economic consultants, Goodbody Economic Consultants, to create 800 temporary jobs and boost the local Mayo economy by approximately €181 million. The plant is expected by Shell to employ approximately 55 workers when operational. ==External links== * [http://www.thepipethefilm.com/ Trailer for 'The Pipe' released 8th July 2010 - Galway Film Festival] * [http://www.vimeo.com/8668733 'Pipe Down' film - winner - Waterford Film Festival 2010] *[http://www.corribgas.com/ Project Website] *[http://www.corribgaspipeline.ie/ Corrib Gas Pipeline] *[http://www.shell.com/home/content/ie-en/about_shell/shell_businesses/ep/corrib/about/dir_about_corrib.html/ Project Overview and History] *[http://www.publicinquiry.ie/pdf/Fiosru_2_HI_RES_Final.pdf Centre For Public Inquiry's review of events surrounding the Corrib gas project] *[http://www.offshore-technology.com/projects/corrib/ Technical details of the Corrib project from Shell's offshore-technology.com] *[http://www.publicinquiry.ie/pdf/Accufacts_Report_Hi_res.pdf Technical details of proposed pipeline from Accufacts Inc.] *[http://www.mayogasinfo.com/ Mayo Gas Info] *[http://www.dcmnr.gov.ie/TAG/Technical+Advisory+Group.htm Advantica's review of onshore pipeline] *[http://news.bbc.co.uk/1/hi/northern_ireland/4739831.stm Bitter dispute over gas pipeline] — [[BBC]] news article on controversy {{Shell oil}} {{Coord missing|County Mayo}} {{Use dmy dates|date=September 2010}} {{DEFAULTSORT:Corrib Gas Project}}