StarEnergy Albury Gas Storage Project
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Processing
We have previously considered siting the gas treatment facility on our existing operational site at Albury. However, recognising the need to minimize the amount of development within the Surrey Hills Area of Outstanding Natural Beauty (AONB), we have looked at other alternatives. The scheme as now proposed would see the development of the gas processing facility within the parish of Ripley. This is an intermediate location between the well site at Albury and the tie-in to the gas grid near West Horsley.
The site

The selected location for the proposed gas processing facility is adjacent to Furze Copse some 800 metres east of Send Prison. The site is arable land and is bordered on the northern, eastern and southern boundaries by trees providing screening. Access to the site is via an existing track from to the west of the site. The nearest villages are West Clandon approximately 1.5km to the west and West Horsley approximately 1km to the east. Send Prison is situated approximately 800 metres to the west. The location is shown on the project plan.We believe the new site for the gas processing facility has planning and environmental benefits including:

  • It minimises development within the AONB whilst still making the project technically and economically viable
  • The site is generally remote from residential population, reducing any potential visual and noise impacts on local people
  • The site is already partially screened and it will be possible to increase this with earth mounding and new tree planting.
Gas processing facility site
Gas processing facility site
the facilities

The gas processing facilities would comprise the above-ground equipment required to treat and compress the gas during injection and withdrawal. The site would occupy an area of some 3.5 hectares. It is anticipated that the tallest parts of the plant would not exceed the existing tree line. As the design develops further illustrations of the gas processing facilities will be posted on this site.

operation
The operation of the gas store depends upon the gas demand in the national gas market which determines whether the gas is injected or withdrawn. Although the gas processing facility must be available all year, it is expected to operate for approximately 70per cent of the time. It would be permanently manned and operated from a dedicated control room within the site. The same control room would also remotely operate all other project components from the wells at Albury to the AGI near West Horsley.
Injection

Natural gas taken from the gas grid would be metered as it enters the facility. The small quantity of odorising agent present in the gas drawn from the grid would be removed using a process which chemically reacts the odorising agent with a solid granular catalyst resulting in a spent and stable product. The gas would then be compressed to raise the pressure to reservoir pressure. The reservoir pressure will vary as it is filled from empty to full.

Withdrawal

During withdrawal, and depending on reservoir pressures, gas would initially free flow from the wellhead to the gas processing facility but as the reservoir pressure falls gas would be compressed to meet the gas grid pressure specification.

When in the reservoir the gas would contact water and natural gas liquids. After compression, the gas would, therefore, enter a dew point control process to reduce the water / liquid content to the level specified for entry into the grid.

Construction

The first phase of construction of the facility would involve clearance and profiling of the site, provision of foundations for the major structures and an engineered drainage system. A temporary construction camp would be set up.

Process plant would be transported to the site for erection and installation on an ‘as needed’ basis to avoid long-term storage. Off-site fabrication and pre-assembled units would also be utilised where possible to minimise work at site.

The construction phase of the gas processing facility would take about 18 months. Access routes would be identified to ensure minimal disruption from construction traffic.

Once installation of all project components was completed, the project would enter a commissioning phase when gas from the Scotia Gas Network was slowly introduced with the pressure gradually rising to the operating level. This phase would take about three months.

 

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Humbly Grove
Humbly Grove
Take a tour of our existing gas storage facility near Alton in Hampshire.

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The STore
A gas store in the existing underground depleted hydrocarbon reservoir at Albury

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WELLSITE
Drilling of four development wells and pipeline connections at the existing Albury well site

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PIPELINE
A five-mile (8.3 km) gas pipeline from the Albury well site to the gas processing facility (including an associated temporary pipe store and contractor’s yard at East Clandon)

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HOW IT WORKS
View the 3D Visualisation diagram
PROJECT PLAN
View the high resolution map as in PDF format. Make take a few minutes to load.
The production elements and proposed pipeline route. PDF approx 3mb.