Assets scheduled for abandonment / decommissioning around the world all have one thing in common, removal of hazardous contaminates is required so decommissioning can be performed safely, and metals recyclers can manage the steel.  Although how clean is clean is still being decided in regard to how much mercury can remain in the steel the oil and gas industry has set some targets.  This group of 400-Series chemicals are formulated to meet these targets and have been through bench trials and used successfully on full scale projects.

Powerful alkaline surface cleaners (e.g. ISCT 400-66) and scale removers with various proprietary blends of surfactants, chelants, corrosion inhibitors, pH adjustment agents, sequestering agents and hydrogen sulfide scavengers that allow rapid penetration and reduction of heavy metals in hydrocarbon processing systems. Each formula can be adjusted based on mass removal criteria, hydrocarbon loading, depositional environment, scale composition, metallurgy, depth profile and application approach.

Strong acid blends/scale removal formulas (e.g. ISCT 400-69) with controlled foaming, select corrosion inhibitors, wetting agents, oxidants, hydrogen sulfide scavengers and hydrogen embrittlement inhibitors that allow controlled penetration and scale removal to metal substrates. Additional oxidizers can be added in the field based on mercury mass, distribution, species and depth profile. Each formula can be modified based on mass removal criteria, hydrocarbon loading, depositional environment, scale composition, metallurgy, depth profile and application approach.