TY - JOUR ID - TI - Produced Water Deoxygenation: Investigation of Nitrogen Purging Scheme– Parametric Study – Part1 AU - Ibrahim Al Amri AU - Chandramouli Thotireddy, AU - Saada Al Shukaili AU - Wameath S. Abdul-Majeed AU - Salam K. Al-Dawery PY - 2022 VL - 40 IS - 9 [Cheringmical Enginee] SP - 1090 EP - 1104 JO - Engineering and Technology Journal مجلة الهندسة والتكنولوجيا SN - 16816900 24120758 AB - Produced water (PW) is water that comes out of the well with the crude oil duringcrude oil production. A well-known obstacle hindering the reuse of the producedwater in different sectors is the high dissolved oxygen (DO) content as it can causecorrosion and polymer degradation. This study reports the experimentalinvestigations for de-oxygenating samples of PW collected from Omani oil fieldsvia a gas lift unpacked and packed column. Two types of packing (polyethylenerushing rings and spherical glass balls) were used. Upon treating the PW samplesgrafted with different concentrations of polyacrylamide; 100-500 ppm, throughdifferent purging techniques at various N2 throughputs, a considerable reductionin the content of the dissolved oxygen (from saturation level to less than 1 ppm)was detected in the first duration (3 minutes). Upon examining purging durationsup to 300 minutes, the DO removal efficiency was slightly improved; however,residues of DO (approaching 0.5 ppm) were left unremoved, indicating thenecessity for elaborating another approach for treating the shallow DO levels

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