REVIEW OF GAS HYDRATE PLUG DISSOCIATION IN OIL AND GAS PIPELINE: DOWNSTREAM PRESSURE REDUCTION APPROACH

Stanley Okonji, Godfrey Ariavie, Henry Egware, Collins Kwasi-Effah

Abstract

Hydrate plug dissociation in subsea pipelines is a challenging problem in oil and gas transport systems as limited options are available for remediation. Key concerns include technical, operational deferment and safety hazards that are associated with hydrate plug dissociation in oil and gas pipelines. This paper presents a comprehensive review of the physics of hydrate plugs remediation including a compilation of dissociation models, experimental work performed to date, and a detailed analysis on the problem of gas hydrate from a flow assurance perspective. Depressurization methods are critically reviewed, with influence of temperature, pressure, velocity and hydrate plug properties discussed with detail. Outstanding research questions for hydrate plug dissociation highlighted. Read full PDF

Keywords: Pipeline, Gas hydrate, Hydrate plug, Flow assurance, Oil and Gas

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