The Mechanism Study of Sewage Scaling in Gas Filed Containing H₂S

Abstract:

Sewage Scaling in the process of sewage transfer in gas field containing hydrogen sulfide is one of the major problems in the gas field production. So to study the scaling mechanism of sewage containing hydrogen sulfide is necessary and can provide thought for antiscale of transfer pipelines. The study shows that as a result of the corrosion effect of hydrogen sulfide, it makes increases of roughness in the pipe inner surface and increases of small particles in the sewage, promotes crystallization of the scale crystal, and changes the structure and size of the scale crystal. The slow oxidation of hydrogen sulfide produces elemental sulfur particles, promotes the crystallization of more scale crystals, and increases the amount of scale formation. The changes of pH value in the sewage change the concentration of hydrogen sulfide ions in sewage containing hydrogen sulfide, change the sewage corrosion, and thus change the composition of sewage scaling. Under the condition of containing hydrogen sulfide, sewage presents the characteristic of corrosion first and scaling later,then corrosion promotes the scaling, and the scale contains more corrosion products.

• Periodical: Advanced Materials Research (Volumes 834-836)
• Pages: 445-449
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.834-836.445
• Online since: October 2013
• Authors: Xue Yuan Long, Chong Fei Ding
• Keywords: Gas Field Sewage, Hydrogen Sulfide, Scaling Mechanism

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