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BP, Chevron, ConocoPhillips and Shell prepare for Clair phase 3 in UK

BP and partners voted Greater Clair Appraisal Program

2B1st_Project_Smart_Explorer_Sales_Pursuit_ToolIn March 2013, BP and its partners Chevron, ConocoPhillips and Shell decided to push back the horizon of the UK offshore Clair field beyond 2050 in voting for the appraisal program to eventually lead to the third phase of development of the field as Greater Clair standalone project.

Discovered in 1977, the Clair field lies by 140 meters of water depth approximately 75 kilometers west of the Shetlands Islands.

Covering 220 square kilometers, BP and its partners have estimated Clair to hold 8 billion barrels of oil equivalent (boe) of in-place reserves.

BP_Greater_Clair_Project_mapRegarding Clair recoverable reserves BP and its partners have always remained very cautious because of the complexity of the fractured reservoir.

For this reason, BP and its partners had decided to develop Clair in phases in order to accumulate experience from phase to phase.

In Clair BP and its partners share the working interest in such a way that:

 – BP 29% is the operator

 – Chevron 19%

 – ConocoPhillips 24%

 – Shell 28%

Clair phase 1 started operations in 2005 with only one platform to process and export the oil and gas through pipelines the Sullom Voe terminal in the Shetland Islands.

Clair phase 2, called Clair Ridge, is more ambitious and is designed around a complex of two new bridge-linked platforms to be installed upper north in the Clair field.

Requiring $7 billion capital expenditure, the Clair Ridge project should be completed in 2015 in order to start commercial operation in 2016 for a period of 40 years.

During this period, BP and its partners expects Clair Ridge to produce 640 million barrels of crude oil.

BP to deploy LoSal low salinity water injection process

Designed for production capacity to reach 120,000 b/d of oil, Clair Ridge has also been thought energy efficient as it will incorporate a:

 – Hub to tie-in and treat future expansion of the complex

 – Dual-fuel power generation

 – Waste heat recovery system

 – Low pressure gas capture and recycle

 – LoSal water injection unit for soft water-based enhanced oil recovery 

The LoSal water injection technique is a BP proprietary process using desalinated water for enhanced oil recovery purpose.

Tested successfully in Alaska since 2008 in the Endicott field, this LoSal process can improve the recovery rate of crude oil up to 6%.

BP_Clair_Ridge_ProjectIn Alaska where the sea water has naturally a low salinity, it was observed that the water injection was providing with excellent results.

Therefore Clair Ridge will be the first offshore project to embark a desalination unit to perform the LoSal technique at full scale.

The London-based AMEC is currently performing Clair Ridge engineering and project management services (EPMS) contract covering the detailed engineering, the construction and the installation of the platforms.

In respect with the improved knowledge of the reservoir and the deployment of new technologies, BP and its partners are looking to push ahead the recoverable reserves of the Clair field.

For these reasons, BP and its partners decided to proceed to two years appraisal program to prepare ground for Clair third phase as Greater Clair.

Estimated to cost $500 million, this appraisal program will start with five appraisal wells that could be extended to eight or twelve.

In the context of uncertainty on the characteristics of the oil and gas along the fractured reservoir, the appraisal program is expected to return to BP and its partners the indications to define the:

 – Size and nature of the processes to be mobilized to develop Greater Clair

 – Additional installation to be added to Clair Ridge to optimize production and extend the plateau production period.

Located in a region of the North Sea concentrating up to 17% of the UK oil and gas reserves, the Clair field should tell in 2015 to BP and its partners Chevron, ConocoPhillips and Shell how much capital expenditure to plan for the Greater Clair project that could come on stream in 2020.

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