A composition is provided which, when applied to a metal surface, forms a corrosion-inhibiting film thereon. The composition comprises the reaction product of a first component selected from an epoxy resin, an epoxidized alkene and a substrate having at least one displaceable halogen, and a second component comprising a monomercaptan in a hydrocarbon diluent. The composition is applied by contacting the metal surface with the composition. The composition is particularly useful in the treatment of down- well metal surfaces in oil and gas wells to inhibit the corrosion of the metal under highly corrosive conditions, and is effective even in the presence of polymeric permeability control agents such as aqueous polyacrylamides.
本发明提供了一种组合物,当应用于
金属表面时,可在其上形成一层腐蚀抑制膜。 该组合物包括选自环氧
树脂、环氧化烯和具有至少一种可置换卤素的基质的第一组分与包括烃类稀释剂中的单
硫醇的第二组分的反应产物。 通过将
金属表面与该组合物接触来应用该组合物。 该组合物特别适用于处理油气井中的井下
金属表面,以抑制
金属在高腐蚀性条件下的腐蚀,即使在存在聚合物渗透性控制剂(如
水性聚
丙烯酰胺)的情况下也有效。