Session: Advances in Materials for Oil and Gas Production (Part III of III)
Sulfidation of Alloy C-276 level transmitter diaphragm in SAGD high pressure steam (C2026-00130)
Tuesday, March 17, 2026
3:30 PM - 4:00 PM Central
Location: 362 DE
Earn .5 PDH
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High pressure steam is injected into deep oil sands reservoir to heat up the bitumen, reduce the viscosity and make it flow more easily. The steam temperature typically ranges from 200 to 260 ºC. At this temperature range some hydrocarbon molecules decompose and produce light hydrocarbons, CO2, H2S etc. This vapour, mixed with the injected steam, returns through production wells from well casing and production fluid. It is typically sent back to the central process facilities (CPF) for further treatment before being used as fuel gas. CO2/H2S corrosion need to be considered and evaluated for the lines and equipment used for handling the produced vapour. In this paper two CO2/H2S corrosion prediction tools are used to predict corrosion based on typical produce vapour composition. According to the predicted corrosion rate, mitigation options are recommended. In the meantime, current mitigation practice at two SAGD sites and historical inspection data are reviewed and compared to the prediction.
