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An operator in the Rockies was facing many problems with their low-pressure, plunger lift-assisted gas wells. Frequent slickline jobs were being performed to clean out the wells and confirm if and when the tubing needed to be replaced. After pulling the tubing, the team found severe iron sulfide (FeS) buildup on the inner wall of the casing and outer surface of the tubing, as well as solid deposition on the inside of the production tubing. See Figure 1. Additionally, the wells were designed with multizone completions, causing incompatible produced waters to mix from the different zones and form calcium carbonate and barium sulfate scale. In need of a safe and economical chemical treatment to combat these ongoing challenges, the operator reached out to multiple service providers for a new solution.

After surveying the field conditions and ongoing problems, Baker Hughes, a GE company (BHGE), recommended its new FUSE™ WCW3444 triple combination product. This offering is the first of its kind, with the ability to mitigate iron sulfide, corrosion, and scale with a single chemical treatment. Pleased with the initial testing results, the operator agreed to trial the new product on 50 wells.

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Challenges & Results


  • Low pressure, plunger lift-assisted gas wells
  • Severe iron sulfide buildup, under-deposit corrosion, and scaling problems


  • Prevented future FeS, corrosion, and scale deposition
  • Reduced required slickline frequency from 30-day intervals to 90-day intervals, saving $70,000 USD