MAGNACIDE B Microbiocide Case Study in Australia

This case study details the application of Baker Hughes MAGNACIDE B microbiocide to control sulphate-reducing bacteria (SRB) in subsea pipelines on the northwest shelf of Australia. The operator faced challenges with ineffective biocide treatments, leading to uncontrolled SRB populations, high levels of hydrogen sulfide (H2S), and poor water quality for reinjection. The incumbent biocide was unable to manage SRB activity within acceptable limits, prompting the operator to seek assistance from Baker Hughes. The recommended MAGNACIDE B microbiocide was tested in a field trial, which resulted in a significant reduction of SRB populations by more than 99.999% and H2S levels below detectable limits. Additionally, the water quality improved, eliminating the need for frequent filter changes. The case study illustrates the successful implementation of the microbiocide treatment, which not only addressed the operational challenges but also resulted in cost savings of $97,000 USD in biocide treatments.