VWS Westgarth - Sulphate Reduction Systems

Able to draw on over 110 years of water treatment and desalination experience, VWS Westgarth is an expert in the supply of water treatment process plant. Today, VWS Westgarth is the largest single supplier / operator of sulphate reduction membrane systems, and with its recent purchase by Veolia Water Solutions and Technologies is now able to utilise the specialist R&D and process abilities of the world's largest water treatment company.

SULPHATE REDUCTION FOR PRETREATMENT OF SEAWATER INJECTION

Sulphate reduction offers two main advantages in waterflood injection operations:

• Injecting normal high sulphate seawater into the reservoir that has formation water containing barium and strontium results in the formation of sulphate precipitation
• Removing sulphate from injected seawater this scaling potential is prevented

By reducing the source of sulphur - the food source of thermophylic sulphate reducing bacteria - the threat of well souring is removed. Sulphate removal is now accepted in the industry as being both effective and cost-efficient especially in oil developments where chemical injection or well workover is problematic and / or expensive.

VWS Westgarth's capability to provide the full topsides sea water system maximises plant efficiency and availability through process designs covering:

• Sea water lift and coarse filtration
• Chlorine generation
• Process pumps
• Pre-treatment systems (membrane and muti-media)
• Membrane process systems (SRP, SWRO (washwater, service water, potable water)
• Deaeration (vacuum, gas strip, nitrogen strip)
• Chemical storage and injection
• Water injection pump systems
• Nitrogen generation and blanketing
• Seawater cooling / heat exchange

The Westgarth solution, complete with piping, valves, instrumentation, analysers and integrated common control system, can be supplied as a single lift module or as a series of sub-assembly modules as per the requirements of the client.

The strength of VWS Westgarth's product range lies in the superiority of design, materials and components. Our use of high standard and exotic materials maximises plant life and reliability, even in the most demanding of offshore conditions.