Development and application of a novel slow-released corrosion inhibitor

In view of the serious problem of corrosion caused by highly mineralized waste water in Dongxin Oilfield,a parent corrosion inhibitor was synthesized indoors.And a novel slow-released corrosion inhibitor GH-1 was developed by mixing the parent corrosion inhibitor with the expansion agent and adhesion agent.Its synthesis,preparative process,mechanisms of corrosion inhibitor and laboratory tests results were presented briefly.The experimental results show that the novel corrosion inhibitor releases composition slowly,the static corrosion inhibition rate and dynamic corrosion inhibition rate are both greater than 90%.The field tests show GH-1 can control average corrosion rate under 0.076 mm/a,its valid period is longer than 300 days.It has long valid period and excellent corrosion inhibition.And it is easy to work.