Evaluation of Biocorrosion Caused by Chemical Reactivity of Sulfate-Reducing Bacteria (SRB) in Petroleum Wells in the Algerians Hassi Messaoud Region

Abstract

This work presents a study on the issue of bacterial biocorrosion in oil production equipment within the fields of Hassi Massoud. Biocorrosion is exacerbated by the presence of sulfate-reducing bacteria developed in the Albian waters, which are responsible for numerous challenges encountered in oil installations. The objective of this study is twofold: firstly, to monitor the issue of bacterial corrosion using chemical methods involving the detection of sulfate-reducing bacteria (BSR) in Albian water samples according to APIR38 standards. Secondly, to assess bacterial corrosion through ultrasonic control and the Coupon method to test the efficiency of the corrosion inhibitor NORUST 720. The detection of BSR in water samples taken from the W1C treatment station and the MDHA6 well yields positive results, indicating the presence of BSR bacteria in oil installations with a concentration of 10⁵ germs/ml. The injected inhibitor NORUST 720 in the collection and desalination network proves effective in limiting the impact of sulfate-reducing bacteria (BSR). This is corroborated by the corrosion coupon test, where the corrosion rate is estimated at 0.018 mm/year.The ultrasonic and radiographic corrosion monitoring of the line between wells MD488 and MD E2C reveals a nominal thickness of 2.74 mm