[UK] Captain

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escveritas
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[UK] Captain

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The Captain Field

The Captain field lies approximately 90 miles (145 km) north-east of Aberdeen, Scotland, in the Outer Moray Firth, in water depths of around 346 feet (105.5 m).

Discovered in 1977 in Block 13/22a, the Captain field achieved first production in March 1997, thanks to key technology developments in horizontal drilling and down-hole pumps in well bores.

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The field includes a wellhead protector platform and bridge linked platform connected to a floating production, storage and offloading (FPSO) vessel and two subsea manifolds tied back and connected to the platforms by a suite of pipelines.

Captain crude oil is offloaded from the FPSO offloading vessel to a dynamically positioned shuttle tanker and transported to customers. Captain gas is exported (and imported) via subsea pipeline to the Frigg UK Gas Transportation System and then on to St Fergus gas terminal.

In 2018, daily production averaged 25,800 barrels of liquids and 3.0 million cubic feet of natural gas.

Ithaca Energy continues to implement projects designed to sustain production and increase recovery at Captain. This includes active platform and subsea well in-fill drilling and completion programmes targeting key areas of the reservoir. Continued development drilling is expected through the next decade.

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The Next Phase of Development

A key project designed to increase recovery at the field is the Captain Enhanced Oil Recovery (EOR) project. As the most advanced polymerised water injection project in the UK North Sea, Ithaca Energy is using this innovative EOR technology to breathe new life into the billion-barrel field.

A Phased Approach

Polymer EOR has been trialled at the Captain field since 2010 to assess its potential and develop the best approach to any future deployment. This approach enabled plans to be to fine-tuned prior to progressing the project post sanction in September 2017.

The brownfield expansion has centred on the existing Captain infrastructure, located in a segment of the field supported by the existing platforms, known as Area A. The scope includes polymer injection in up to six long-reach horizontal wells, several brownfield work scopes, and the bulk provision of polymer designed for the specific reservoir conditions at Captain. The project has been utilising polymer for 2 years and performance is trending as expected.

Learnings from this first stage are being used to inform any future decisions for stage two of the project, which would involve EOR expansion into the subsea areas of the field.

Pioneering Technology

For many years, the Captain field has been under waterflood, meaning a lot of effort has been focused on water production and treatment. However, with bypassed oil remaining in place due to the way waterflood results in a “coning” effect in the reservoir, EOR presents an opportunity to unlock significant potential by reducing the mobility contrast between the polymerised water and viscous oil.

A series of pilots demonstrated that Captain’s reservoir conditions – pressure, temperature, type of rock and oil properties – were right for polymer EOR.

Maximising Economic Recovery

Captain EOR is a prime example of how technology can help increase the economic viability of smaller and more complex fields, develop more cost-effective solutions and better use data to drive improved decision making.

Captain is operated by Ithaca Energy (UK) Limited (85 percent); Dana Petroleum (E&P) Limited holds a 15 percent non-operated working interest in the field.
escveritas
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Re: [UK] Captain

Unread post by escveritas »

Ithaca Energy announces Captain Field EOR Stage 2 Sanction

Ithaca Energy, operator of the Captain field, is pleased to announce sanction of the Captain Enhanced Oil Recovery (EOR) Stage 2 project in the UK Central North Sea after receiving Field Development Plan Addendum consent from the Oil and Gas Authority (OGA).

EOR Stage 2 is the next phase of development at our Captain Field and is building on the success of EOR Stage 1. The project is designed to significantly increase hydrocarbon recovery by injecting polymerised water into the reservoir through additional subsea wells, subsea infrastructure and new topsides facilities.

Our Captain EOR project demonstrates our ability to deploy innovative technologies to access new areas, sustain production and increase resource capture. Stage 1 of the project has demonstrated that polymer EOR technology works, with the production response in line with or better than expected across all injection patterns, helping us maximise economic recovery within the UK Continental Shelf (UKCS).

Bill Dunnett, Chief Executive Officer, Ithaca Energy, said: “Consent for Captain EOR Stage 2 progresses the application of a technology that has already demonstrated an improved recovery rate and helps extend the life of the Captain field. This project underlines our long-term commitment to the North Sea and is a major demonstration of confidence in the viability of safe, long-term operations in this basin. Our Board and partners have sanctioned the capital investment to maximise the sustained performance of this asset. We have had great input and innovation from the supply chain to help optimise this project.”

Jongwoo Kim, Chief Executive Officer, Dana Petroleum, said: “Dana has maintained an interest in the Captain field for many years. It is particularly exciting to see how extensive research alongside the application of new technology is being used with great efficiency to enhance recovery. We are really pleased to have worked collaboratively with Ithaca Energy to support this important project.”

The Captain field was discovered in 1977, in Block 13/22a located on the edge of the outer Moray Firth. The billion-barrel field achieved first production in March 1997 – over 20 years ago – thanks to technology developments in horizontal drilling and down-hole pump technology. The installation comprises a Wellhead Protector Platform and Bridge Linked Platform connected to a Floating Production, Storage and Offloading vessel. Ithaca Energy holds 85% and is the operator of the Captain field, Dana Petroleum holds 15%.
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