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The Corrib Field is a Triassic gas field located in the Slyne Trough Blocks 18/20 and 18/25 some 60 to 65 km off the County Mayo coastline in 350 m of water, offshore West Ireland. The Corrib Field contains a very dry sweet gas with an expected condensate yield of less than 0.5 bbls/mmscf, 0.3% CO2 and no H2S. The gas initially passes through the slug catcher where the bulk liquid separation takes place, and then an inlet separator, future refrigeration and into the hydrocarbon and water dew-pointing, which is achieved using a J-T process. The gas is then compressed, metered and odorised before export. Hydrocarbon condensate produced by the gas dew pointing system, together with any separated from the feed gas in the slug catcher/inlet separator, passes to the condensate stabilisation system. This comprises a two stage flash system with intermediate heating. The stabilised condensate is cooled in an air cooler and sent to storage. Condensate is used as fuel within the Terminal. Raw aqueous methanol recovered from the slug catcher inlet separator and dew-pointing system passes through a particulate filter into the methanol flash drum. From there it passes to the raw methanol storage tanks. Any condensate that separates out in the methanol flash drum is routed to condensate stabilisation system. The methanol is pumped from storage to the methanol still via the still feed / bottoms exchanger. The column overhead vapour product is condensed in forced draught air coolers, and flows to the product methanol storage tanks. Wastewater effluent is pumped to the produced water treatment facility. Fresh methanol for make-up is fed to the product methanol storage tanks by road tanker. The Corrib field contains a dry sweet gas with an expected condensate yield of less than 0.5 bbl/MMSCF, 0.3% CO2 and no H2S and is being developed as a long-range sub-sea tieback to the shore with the gas is received and treated to meet sales gas specification in the Onshore Terminal; sales gas is delivered into an export pipeline to end users within the Bord Gais Eireann (BGE) gas ring main. The Onshore Terminal is a grass roots facility with process and utility equipment to produce sales gas and will be operated by Enterprise Energy Ireland Limited. The gas plant consists of the following process facilities necessary to meet the export gas specification: * Inlet Reception * Gas Conditioning (with future refrigeration) * Sales Gas Compression * Fiscal Gas Metering * Odourisation and the following process support systems: * Condensate Stabilisation * Methanol Regeneration and Injection (with future expansion capabilities) To support these facilities, the following utility systems will be provided: * Fuel gas * Condensate fuel * Diesel * Heating Medium (TEG/water) * Produced water treatment and disposal (with future expansion capabilities) * Open and closed drains * Instrument and plant air * Nitrogen * Potable water * Firewater * Flare * Chemicals * Storage Power Generation (including emergency power). The facility will also provide the necessary chemical injection, control and power requirements to the subsea facilities via an umbilical provided by the Offshore Contractor. Scope Of Work And Services - Summary ASI Corrib JV's The scope of work for the project consists of the detailed design, engineering, procurement, supply, fabrication, installation, construction, calibration, testing, commissioning, then run-in and test run for utility systems and assistance to EEIL's operations team to start-up the hydrocarbons systems and carry out the performance tests. Acceptance of the facilities by EEIL occurs after completion of the Performance Tests. ASI will therefore have considerable involvement during the start up and test period. Enterprise operates the Corrib Field, on behalf of itself and its Co-venturers, Statoil and Marathon. The Onshore Terminal is a grass roots facility located in Bellanaboy, near Broadhaven, County Mayo, West Ireland. The terminal is to receive gas and liquids from the offshore Corrib field and process the gas to sales quality for export in to the Irish gas grid. The fluids arriving at the Terminal comprise hydrocarbon gas and condensate, aquifer and condensed water, together with methanol hydrate inhibitor. In addition, the fluids will contain corrosion inhibitor. The Terminal will consist of the onshore facilities to process the incoming fluids from the Corrib field.
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