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Nitrogen injection is widely applied to enhance oil recovery, but the corrosion failure risk of tubing and casing is increased by residual oxygen in nitrogen. In this study, the corrosion behaviors of P110 steel under dynamic conditions with different oxygen partial pressures (2.5–0.003 MPa) simulating high‐pressure (30 MPa) nitrogen injection were studied. The morphology and composition of corrosion...
The effect of polyacrylamide on corrosion behavior of N80 steel in the HPAM/H2S/CO2 environment was studied by using weight‐loss and electrochemical tests to simulate the environment of production wells in polymer flooding. The morphology and composition of corrosion scales were studied by scanning electron microscopy, energy dispersive X‐ray spectrometer, and X‐ray photoelectron spectroscopy. The...
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