Research on Corrosion Resistance of Steel Pipes in Water of Oilfield

Abstract

In order to provide a theoretical basis for reasonable material selection in oil and gas field, according to the actual situation of a water source well, materials N80, 3Cr, H13, 13Cr and super 13Cr were selected as the research objects. The microstructure and hardness of N80, 3Cr, H13, 13Cr and super 13Cr were studied by metallographic observation and hardness test. By simulating the actual corrosion environment of the water source well, the experiment of autoclave hanging sheet and detection of corrosion products by X ray diffraction and the CO2 corrosion resistance of N80, 3Cr, H13, 13Cr and super 13Cr were analyzed. Besides, some suggestions for material selection of oil and gas wells were put forward. It is found that super 13Cr has higher hardness and CO2 corrosion resistance, 13Cr and 3Cr are second. When selecting oil and gas field water well material, it is recommended to choose super 13Cr first, then 13Cr and 3Cr.