Supporting the global energy transition towards sustainable renewable energy, Roemex have used our expertise in upstream oil & gas to develop bespoke solutions for green energy worldwide.
 

Roemex have a range of chemicals designed specifically for the challenges of both the offshore wind and geothermal sectors, providing integrity management, corrosion control and flow assurance.  It was recognised that although there were some similarities to conventional energy markets, the global renewables market both deserves and needs the same bespoke, tailored product that is 100% fit for purpose.

Our commitment is to ensure that the renewable energy industry is supported properly, with a bespoke solution for the long term.  A commitment that can be demonstrable both from our unique product range & track record but also our long-term R&D programme, ensuring continually innovating and supporting the energy transition as it matures.

Geothermal

Roemex have developed a range of chemicals, monitoring, management & reporting services for the global deep geothermal market.  This range consists of inhibitors for corrosion and scaling, but also remedial treatments designed to reduce injection pressures to improve or restore re-injectivity.

This range of inhibitors have been designed exclusively for the geothermal market. 

Oilfield inhibitors are inherently unsuited to perform effectively in a water-based system.  The composition of the chemical and the nature of the molecules within, not only under-perform technically but can cause significant problems in the system, which usually manifest themselves as a flow assurance issue.  Common symptoms of which are blocked filters, an increase in injection pressure & reduction in flow rate.

Inhibitors for Corrosion & Scale

Roemex have developed a range of green inhibitors, specifically designed for geothermal brines.  These inhibitors control corrosion and if required carbonate and sulphate scaling, often with a combined or 2 in 1 product that utilises the existing injection line.  Effective corrosion & scale control is essential for geothermal plants to be economically viable.  Minimising production downtime and avoiding the significant cost of intervention to resolve an integrity or flow assurance failure.
 

The features of the Roemex GEOTECH range are:

• Effective corrosion and scale control of ESPs, production casing, surface infrastructure and re-injection casing.
• Cost effective from an OPEX aspect but also significantly reduces the need for costly intervention with associated downtime.
• Environmentally friendly with as many raw materials as possible derived from natural and sustainable sources.
• Fully REACH compliant

Service Quality & Support

Our background in providing Chemical Management Services (CMS) to our customers gives our customers a level of collaborative working and service quality that is globally renowned.  Typically, we would provide this service completely free of charge.

• Assess current system health, flow assurance, corrosion rates, microbiology & create action plan to mitigate any adverse impacts, if required.
• Create an implementation document, outlining performance, compatibility work & the workflow to implement Roemex inhibitors safely and with minimal disruption.
• Thereafter:
  • Confirm chemical injection rate is in line with implementation recommendations and start optimisation process
  • Report findings and advise on any potential recommendations
  • Assist with any troubleshooting i.e. product application, unknown deposit characterisation.
  • Sample brine and evaluate for residual inhibitor, ion analysis and bacterial content
  • Obtain process and corrosion monitoring data, process and generate clear output.

Remedial Treatment & Flow Assurance

Roemex, leveraging both our drilling & production flow assurance experience in upstream oil & gas have tailored existing chemistry to provide a bespoke solution to dissolve scale, organic and inorganic solids, drilling muds & “gunk”. 

This can be applied to both subsurface and surface infrastructure. 

Our remedial dissolver treatments are non-corrosive and are field proven in geothermal plants in Europe, to reduce injection pressure and restore flow rates to levels the plant experienced when newly commissioned.

For more information please contact renewables@roemex.com

Roemex proprietary corrosion inhibitor PROE-TEC™ has been used to protect ballast tanks, J-Tubes, Caissons, Jackets etc for 30+ years, without the need for any internal coating or paint or cathodic protection.  Because of this, the cost to prevent corrosion is significantly lower.

TPROE-TEC™, has got extensive global track record both in Oil & Gas and Offshore wind.  Over 200 deployments in oil and gas marine structures and 6 in offshore wind (PROE-TEC™).  The product contains quaternary ammonium compounds which are excellent film forming corrosion inhibitors. The dissolved product forms an amine film on exposed metal surfaces, thus protecting it from corrosion and microbiological growth.

From an environmental aspect, the product is CEFAS Silver with Sub Warning for the UK.  It also achieving the highest rating for Norway and Denmark waters, NEMS Yellow (Y0).

Long term corrosion protection is applicable under the following parameters:

• To treat ballast water (un-filtered raw seawater) to mitigate corrosion of bare, untreated carbon steel, for over 30 years.
• The chemical should be in an anaerobic environment and by design, no ingress/egress of air or seawater.  This will introduce fresh corrosive species as well as diluting/displacing the chemical.
• The chemical is compatible with paint and other marine coatings.
• The chemical will only provide corrosion protection to water wetted surfaces.  So, corrosion protection philosophy is usually either:  Displace air with nitrogen or make allowances for minor, uniformed corrosion in the head space until the oxygen present has been spent.
• The chemical will stop all marine growth, of which, decomposing organic material can generate H2S.  This is fatal if inhaled, extremely corrosive and a feed source for bugs and microbiological growth.
• Should assessments need to be made regarding the integrity of the steel ballast tank internals, a sample of the seawater can be taken and Roemex can assess any corrosion products in the water as well as the residual content of the “active” parts of the inhibitor.
• The chemical ensures compliance with the International Maritime Organisation, Ballast Water Management Convention.

Application / Deployment:

• The product is supplied as a solid with a water-soluble wrapping which can be placed inside the structure when fabricated and stay dormant until the compartment is ballasted.  The chemical will remain dormant inside the compartment until such time as it is water flooded.
• Alternatively, it can be dosed before or during flooding operations during installation.
• Assuming anerobic conditions, no top up required for 30 years.  However, if de-ballasting is needed, it can be “topped up” when re-ballasting.