Deepwater trial tests low-dosage hydrate inhibitor

In a deepwater field test, Shell Exploration & Production Co. says it demonstrated that low-dosage hydrate inhibitors (LDHIs) provide effective flow assurance.Its presentations at the recent Offshore Technology Conference in Houston indicated that LDHIs are an alternative to thermodynamic hydrate inhibitors, such as methanol and glycol. Although methanol and glycol are proven inhibitors, the logistics of transportation and storage have a negative impact on operating and capital expenditures, according to Shell.Need for inhibitionBoth subsea gas and oil flowlines require some hydrate inhibition, especially in deepwater environments. Typical gas flowlines do not have insulation and require ...

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