Offshore Field Development Projects
Western Isles
Operator:Dana Petroleum
Water Depth:155 m / 512 ft
Region:Europe - North Sea
Country:UK
Last Updated:Feb 14, 2014    (view update history)
Project Description
The Western Isles development is located 500 kilometers northeast of Aberdeen in 558 feet (170 meters) of water, compromising the Harris (formerly Rinnes) and Barra (formerly Melville) fields. Dana operates the development with a 65 percent stake, while Cieco holds the remaining 35 percent.

In April 2008, Dana made a discovery at the West Rinnes structure in Block 210/24a. The West Rinnes well 210/24a-11 reached a total measured depth of 6,470 feet (5,870 true vertical depth subsea), encountering a full Brent reservoir sequence. The well found excellent quality sands throughout the Brent sequence.

The East Rinnes appraisal well, 210/24a-11z, drilled by the Sedco 704 semisub to a total measured depth of 6,935 feet (2,114 meters), encountered a full Brent ...
The Western Isles development is located 500 kilometers northeast of Aberdeen in 558 feet (170 meters) of water, compromising the Harris (formerly Rinnes) and Barra (formerly Melville) fields. Dana operates the development with a 65 percent stake, while Cieco holds the remaining 35 percent.

In April 2008, Dana made a discovery at the West Rinnes structure in Block 210/24a. The West Rinnes well 210/24a-11 reached a total measured depth of 6,470 feet (5,870 true vertical depth subsea), encountering a full Brent reservoir sequence. The well found excellent quality sands throughout the Brent sequence.

The East Rinnes appraisal well, 210/24a-11z, drilled by the Sedco 704 semisub to a total measured depth of 6,935 feet (2,114 meters), encountered a full Brent reservoir sequence. A comprehensive set of electric wireline logs were acquired including pressure data and oil samples.

A year later, the operator further appraised the Rinnes structure. The South East Rinnes appraisal well, 210/24a-12, was drilled to a total measured depth of 7,310 feet (6,546 feet true vertical depth subsea). The South East Rinnes well found excellent quality sands, as predicted, within the Lower Brent sequence with a full oil column throughout the Brent reservoir and no oil-water contact. The data from the sidetrack well confirmed a total oil column of over 400 feet true vertical thickness in South East Rinnes area.

In 2010, the field was deemed commercially viable, which is estimated to hold 65 MMboe.

Field Development

As a result of the significant reserve size and the current status of local infrastructure, a floating production solution was selected for the development, with invitations to tender issued.

The field will be produced via a number of gas lifted oil production wells with pressure support being provided by water injection. A total of 12 wells (six oil producers and six water injectors) are envisaged in the initial phase of the development.

In November 2011, Aker Solutions received a contract to manufacture and deliver several subsea control modules and topside power units. Aker signed a contract for the project management, engineering, procurement and construction of several subsea systems. A total of nine subsea control modules is slated for delivery in 2Q 2013.

First production from the development is slated for 2015. Early production rates are expected to be about 40,000 bopd.
Activities
Status Updates
COSCO Yard Launches Western Isles FPSO Hull
Type: Development Activity

Feb. 2014 - Dana Petroleum announced the launch of the Western Isles FPSO hull at the COSCO yard in Qidong, China. The FPSO was built on Sevan Marines "teacup" design with a storage capacity of 400,000 barrels. When complete, the vessel will be deployed to Dana's Western Isles development that consists of the Barra and Harris fields in the UK North Sea. At least five production wells and four water injection wells will be tied back to the FPSO after it is moored on location. Installation of the FPSO is scheduled for late 2015 with production to begin soon after.

Dana Reaches Western Isles Milestone Early
Type: Development Activity

Sep. 2013 - Development drilling at Dana Petroleum’s Western Isles Development Project has started two months ahead of schedule, according to the operator. Dana contracted the Ocean Nomad (mid-water semisub) to carry out the drilling program. Western Isles is a $1.6 billion project centered around development of the Harris and Barra fields in block 210/24a east of the Shetland Islands. The fields will be developed subsea and tied back to a new-build floating, production, storage and offloading (FPSO) vessel. Subsea installation will begin in the summer of 2014. Installation of the FPSO is planned for the summer of 2015 with production startup soon after that. Western Isles is expected to produce more than 40,000 boe throughout its estimated 15-year field life.

Keel Layed for Western Isles FPSO
Type: Facility Construction

May. 2013 - Dana Petroleum and its partner, Cieco, recently participated in a keel laying ceremony for the $400-million floating, production and offloading (FPSO) vessel which will be used in the Western Isles development in the UK North Sea. The vessel is designed to displace 26,000 tons and will have a storage capacity of up to 400,000 barrels of oil. Maximum daily rate of production is expected to be 40,000 bopd. Delivery of the FPSO is scheduled to take place in late 2015 with production to follow soon after.

Subsea 7 Bags Western Isles Contract
Type: Development Activity

Jan. 2013 - Subsea 7 was recently awarded an engineering, procurement, construction and installation (EPIC) contract concerning Dana Petroleum's Western Isles project in block 210/24a of the UK North Sea. Under the contract the company will construct and install two 1.5-mile-long pipeline bundles and a 7-mile-long export pipeline. Engineering and project management are set to start immediately from Subsea 7's Aberdeen office with offshore work scheduled to begin in 2014. The Western Isles plan of development was approved by the UK Department of Energy and Climate Change in December 2012. It involves the subsea development of the Harris and Barra oilfields utilizing five production wells and four water injection wells with produced fluids being sent to an FPSO. Oil is expected to flow in 2015.

Western Isles Recieves DECC Green Light
Type: Operator Update

Dec. 2012 - Dana Petroleum has been given the green light by the Department of Energy and Climate Change to move ahead with the development of its Western Isles project to be located in block 210/24a of the UK North Sea. Western Isles will be a subsea development of at least five production, four water injection and two exploration wells tied-back to a new build FPSO. Installation of the FPSO will take place in 2015 with first oil to follow soon after. Sustained production is expected to plateau at 40,000 boepd. COSCO Nantong Shipyard recently received an order from Dana for a Sevan Marine teacup style FPSO with a storage capacity of 400,000 barrels.

Dana Moves Forward with Western Isles Project
Type: Development Activity

Jul. 2012 - Dana Petroleum has entered the detailed engineering design phase on the $1.5 billion Western Isles development project in the UK sector of the North Sea. The Western Isles project will develop two discovered oil fields called Harris and Barra, which lie 99 miles (160 kilometers) east of the Shetlands and 7 miles (12 kilometers) west of the Tern field. The development will consist of nine wells. Work on the detailed engineering design will begin immediately and the project is expected to receive full approval from the UK Government towards the end of 2012, with first oil production expected in 2015. The Harris and Barra fields are estimated to contain recoverable oil reserves of 45 million barrels, with upside potential in the area.

Sevan Marine Inks Western Isles FPSO Deal
Type: Facility Construction

Jul. 2012 - Dana Petroleum has selected Sevan Marine's FPSO technology for the Western Isles development project. Sevan Marine and Dana Petroleum have negotiated two agreements, one technology license agreement whereby Dana pays a license fee to Sevan for the right to use the proprietary Sevan Technology, and one Service Agreement under which Sevan will provide technical and administrative resources to Dana during the project. The development is expected to produce more than 40,000 barrels of oil equivalent each day and the project is expected to receive full approval from the UK government towards the end of 2012, with first oil production expected in 2015.

Aker Solutions to Deliver Equipment for Western Isles Development
Type: Subsea Equipment

Nov. 2011 - Dana Petroleum awarded Aker Solutions a contract to manufacture and deliver several subsea control modules and topside power units for the Western Isles project. The company has signed a contract for the project management, engineering, procurement and construction of several subsea systems. Aker will deliver nine subsea control modules, a master control system, one electrical power unit, one hydraulic unit, one subsea isolation valve panel, two topside umbilical termination units, two subsea distribution units, five electrical distribution boxes and 11 mounting bases. The work also includes offshore installation and commissioning support of all subsea control system equipment. The Western Isles Development project consists of the Barra and Harris oil fields, which lie in 492 to 558 feet (150 to 170 meters) of water, northeast of the Shetland Isles. Dana plans to develop the field through five producing and four water-injection wells tied-back to an FPSO. The operator anticipates sanctioning the project by year-end with production commencing in 2014.

Aker Grabs Subsea Contract for Western Isles Development
Type: Contract Award

Nov. 2011 - Aker Solutions received a contract from Dana Petroleum to manufacture and deliver several subsea control modules and topside power units for the Western Isles Development project. Aker signed a contract for the project management, engineering, procurement and construction of several subsea systems. A total of nine subsea control modules is slated for delivery in 2Q 2013. The Western Isles Development consists of the Harris and Barra fields, located in the UK sector of the North Sea in 558 feet (170 meters) of water. Dana Petroleum operates the development.

Dana Discovers Third Oil Field in Rinnes Area
Type: New Discovery

Feb. 2009 - Dana discovered a new oil field at the South East Rinnes structure in Block 210/24a in the UK Northern North Sea. The South East Rinnes well, 210/24a-12, was drilled to 6,546 feet (1,995 meters) TVD. The well targeted the Lower Brent reservoir sequence in a separate, untested structure between the Melville and East Rinnes oil fields.

Dana Makes Oil Discovery at East Rinnes
Type: New Discovery

May. 2008 - Dana Petroleum announced the discovery of the East Rinnes Oil Field in Block 210/24a in the UK Northern North Sea. The East Rinnes discovery well, 210/24a-11z, was drilled with Sedco 704 to a total measured depth of 6,935 feet (6,144 feet true vertical depth subsea) and encountered a full Brent reservoir sequence. A comprehensive set of electric wireline logs has been acquired including pressure data and oil samples.

Dana Strikes Oil at West Rinnes Prospect
Type: New Discovery

Apr. 2008 - Dana has discovered oil at the West Rinnes structure in Block 210/24a in the UK Northern North Sea. The structure is located just 5 kilometers from the Dana operated Hudson producing oil field and 2.5 kilometers from Dana's Melville oil field. The Dana operated Rinnes well, 210/24a-11 has been drilled to a total measured depth of 6,470 feet (5,870 true vertical depth subsea) and encountered a full Brent reservoir sequence. A comprehensive set of wireline log data has been acquired including pressure data and oil samples. The well was drilled by the Sedco 704.

Barra (Melville)
Under Development - 2011 to -

Western Isles FPSO
Under Construction - Dec 2012 to -

Prospect - Nov 2010 to Dec 2012

Harris (Rinnes)
Under Development - Nov 2011 to -

Discovery (Appraised) - Feb 24, 2009 to Nov 2011

Dana Petroleum announced the discovery of a new oil field, with its well at the South East Rinnes structure in Block 210/24a in the UK Northern North Sea.

Appraisal Drilling - Dec 28, 2008 to Feb 23, 2009

Stena Spey drilled exploration well 210/24a-12

Discovery (Appraised) - May 2008 to Dec 27, 2008

Well 210/24a-11z was drilled to TD 6,935ft (6,144 TVD subsea)encountered a full Brent reservoir sequence. A comprehensive set of electric wireline logs has been acquired including pressure data and oil samples.

Appraisal Drilling - Apr 2008 to May 2008

Transocean's Sedco 704 drilled exploration well 210/24a-11z

Discovery (Drilled) - Apr 24, 2008 to Apr 25, 2008

Rinnes well, 210/24a-11 rilled to TD 6,470ft (5,870 TVD subsea) & encountered full Brent reservoir sequence. A comprehensive set of wireline log data has been acquired including pressure data and oil samples.

Exploratory Drilling - Mar 12, 2008 to Apr 23, 2008

Transocean's Sedco 704 drilled exploration well 210/24a-11

Update History
The SubseaIQ Team works everyday to provide you with the latest information on the offshore field development market. The following table provides you with a detailed record of each addition and update made to this project by the SubseaIQ team.
UPDATE TYPE DATE DAYS AGO
Facility Updated Feb 14, 2014 68
Field Updated Feb 14, 2014 68
Activity Added Feb 14, 2014 68
Field Updated Sep 04, 2013 231
Activity Added Sep 04, 2013 231
Field Updated Jun 25, 2013 302
Facility Updated May 29, 2013 329
Activity Added May 29, 2013 329
Field Updated Jan 08, 2013 470
Facility Updated Jan 08, 2013 470
Activity Added Jan 08, 2013 470
Facility Updated Dec 19, 2012 490
Facility Status Updated Dec 19, 2012 490
Facility Status Added Dec 19, 2012 490
Field Updated Dec 18, 2012 491
Facility Updated Dec 18, 2012 491
Activity Added Dec 17, 2012 492
Field Updated Dec 17, 2012 492
Field Updated Jul 13, 2012 649
Facility Updated Jul 13, 2012 649
Project Description Updated Jul 13, 2012 649
Activity Added Jul 13, 2012 649
Field Status Added Mar 01, 2012 783
Field Status Updated Mar 01, 2012 783
Field Updated Mar 01, 2012 783
Project Description Added Mar 01, 2012 783
Facility Added Mar 01, 2012 783
Facility Status Added Mar 01, 2012 783
Facility Updated Mar 01, 2012 783
Field Updated Dec 29, 2011 846
Activity Added Nov 17, 2011 888
Field Added Nov 17, 2011 888
Field Status Added Nov 17, 2011 888
Activity Added Feb 24, 2009 1884
Activity Added Apr 23, 2008 2191

    Project Update History Search - View all the lastest updates made by the SubseaIQ team.
 
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Facility Name Western Isles FPSO
Duty Oil/Gas
Operator Dana Petroleum
Current Status Under Construction since 2012
Host Type FPSO
Water Depth 155 m / 512 ft
Dev.Cost n/a
 
Region UK
 
Location 210/24a
 
Field Name Barra (Melville)
Discovery Date
Block 210/24a
Reserve Type Gas
Current Status Under Development
Production Start
Water Depth 150 m / 495 ft
Field Name Harris (Rinnes)
Discovery Date Apr 2008
Block 210/24a
Reserve Type Oil
Current Status Under Development
Production Start
Water Depth 155 m / 512 ft