Corrosion Mechanism and Protection of Production Fluid with Polymer

The effects of corrosive ions,polymer and bacteria in the production fluid on the behavior and degree of metal corrosion were investigated.It is found that high concentration of HCO-3,Cl- and SRB might be the major causes for corrosion.The polymer in production fluid had bad effect on corrosion inhibitor and largely increased the production of SRB,and thus indirectly induced the metal corrosion.A combination technology of polymer degradation reagent,corrosion inhibitor and bactericide was presented.A solid multifunctional and controlling-released corrosion inhibitor was formulated.