en.Wedoany.com Reported - Clariant's low-dosage hydrate inhibitor technology, HYTREAT ECO, designed for deepwater operations in the North Sea, has proven its compliance with OSPAR environmental requirements during offshore field deployment, replacing traditional methanol or monoethylene glycol (MEG) solutions under extreme conditions with subcooling up to 25°C.
HYTREAT ECO is an anti-agglomerant low-dosage hydrate inhibitor (LDHI-AA) that works by keeping hydrate particles dispersed and allowing them to flow smoothly through the production system. Field trial data show that the technology achieves reliable flow assurance at dosages below 1% to 2% of water volume, significantly lower than traditional methanol or monoethylene glycol (MEG) solutions, while fully meeting OSPAR environmental requirements for the North Sea.
The technology has been deployed on offshore oil fields in Norway and the UK. In Norway, it enabled the successful restart of a mature asset—by managing continuously rising water production and reducing reliance on glycol regeneration capacity, the asset was brought online smoothly after a 24-hour shutdown under conditions within the hydrate stability zone, while maintaining produced water quality within discharge standards. This achievement brought the technology to Technology Readiness Level 7 (TRL7). In the UK, HYTREAT ECO replaced subsea methanol injection in a gas condensate field under extreme subcooling conditions, with riser shutdown subcooling reaching 25°C at 130 barg, providing effective control during both normal operations and cold restart scenarios.
The lower chemical dosage reduces chemical consumption, offshore logistics, storage, and handling requirements, which is expected to lower emissions associated with chemical transport and use, further minimizing the operational footprint of deepwater hydrate management.
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