Gas Hydrate Research: From the Laboratory to the Pipeline

Delgado-Linares, José G.; Koh, Carolyn A.

doi:10.1007/978-3-030-81186-0_1

Cited by 3 publications

(1 citation statement)

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“…The rocking cell experimental setup comprises two sapphire tubes in each cell immersed in a temperature-controlled water bath (Figure ). , Each sapphire tube (ID: 18.4 mm) has a stainless-steel ball (ID: 12.5 mm) that moves back and forth under dynamic conditions with a rocking motor. Inside the rocking cell, there is a pressure sensor (Omega, ±0.08%) and a temperature sensor measuring the water bath temperature (Omega, ±0.15°C).…”

Section: Experimental Methods and Materialsmentioning

confidence: 99%

Influence of Varying Underinhibition on Methanol in Gas Hydrate Agglomeration

Navaneetha Kannan,

Delgado-Linares,

Sun

et al. 2024

Energy Fuels

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The influence of methanol (MeOH) on gas hydrate agglomeration is investigated. The study addresses the knowledge gap in understanding how underinhibition and varying subcooling conditions affect gas hydrate agglomeration tendencies under different concentrations of MeOH in gas condensate systems, which is critical for improving hydrate management in the oil and gas industry. In systems underinhibited with MeOH, the hydrate volume percent (HVP) was higher than that obtained in the base system (without MeOH), indicating a higher rate of hydrate formation. The addition of MeOH produced an emulsion with smaller droplets compared to the base system. The new findings confirm that these smaller water droplets within the oil phase significantly increase hydrate formation rates in MeOH systems. The impact of subcooling with various MeOH concentrations (0, 12.5, 20, 25, and 30 wt %) was analyzed and allowed the categorization of the gas hydrate transportability/occurrence into three transition zones based on HVP: nonflowable gas hydrates, flowable underinhibited hydrate slurries, and full inhibition. A flowable underinhibited hydrate slurry is defined by the concentration of THI and the degree of subcooling that effectively reduces the risk of hydrate blockage in underinhibition conditions. Visual observations indicated differences in hydrate plug morphology, with the base system displaying solid plugs (hard) and systems underinhibited with methanol exhibiting permeable plugs (porous). Our findings indicate that MeOH-based systems demonstrate a reduced tendency for hydrate plugging and delayed nucleation under conditions of lower subcooling temperatures, highlighting the importance of temperature control in hydrate management.

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Section: Experimental Methods and Materialsmentioning

confidence: 99%