This paper presents the latest laboratory results on iron sulfide dissolver evaluation. The recently developed dissolvers were studied for their dissolving powers using iron sulfide scale solids and the corrosion rate to mild steel at elevated temperature. Based on these results, the technical gaps and future developments for iron sulfide dissolvers are discussed.
The formation brine in a giant carbonate reservoir had high total dissolved solids and high calcium ion concentration. The absence of any major sulfate-scaling problem in this field despite the seawater flood for more than 25 years is attributed to the injection of compatible aquifer waters before the onset of seawater injection.