Research progress of elemental sulfur deposition in high sulfur gas fields

Sulfur deposition occurs frequently with the continuous decrease of temperature and pressure during the development of high sulfur gas fields. Serious sulfur deposition will cause wellbore blockage, shut-in and shutdown of production, and will affect the safe and efficient operation of gathering and transportation systems. At present, most researches on sulfur deposition in sour gas fields mostly focus on wellbore, while the research on gathering and transportation system starts late. This article illuminates the mechanism of sulfur deposition in wellbore, gathering and transportation system, explores the main factors affecting sulfur deposition, and summarizes the current research status of sulfur deposition prediction methods. The research status of prediction methods and the key technical points for the deposition of elemental sulfur are summarized, and finally looks forward to the future research focus and development trend of sulfur deposition, so as to provide a certain reference for safe and efficient production of sour gas fields.