Production Well Microbial Mitigation and H2S Risk Management

One Field has been eternally acknowledged as a sweet arena without the presence of any souring phenomena. On the other hand, the Sulfate Reducing Bacteria (SRB) growth which has been lately observed in the field Water Injection System played a major role in increasing the H₂S concentrations in particular A fields. The objective of this study is to mitigate the SRB growth in the A Water Injection System and manage the risk of the Hydrogen Sulfide (H₂S). In order to reduce the H₂S concentrations and the return the Fields back to their original states. Thereafter, Biocide Treatment usage; based on the thorough evaluation performed in both the Lab and Fields by collecting more than 100 samples from designated wellheads and identified sampling points in the field Water Injection System network. Biocide field trial for one year was conducted with a persistent monitoring program. It appealed that the Biocide Treatment is influential, efficient and functional, carving deeper in the SRB mitigation and H₂S risk management, the averaged H₂S concentrations and trends in the Fields are being controlled and minimized in both the oil and gas phases.