Abstract: By analyzing the production history and mechanism of hydrogen sulfide formation in a certain oilfield, a targeted hydrogen sulfide treatment plan for the production process is formulated, and two treatment agents are used on site to treat hydrogen sulfide pollution in the oilfield production process. The results of detecting the concentrations of SO42- , S2-, VFA and hydrogen sulfide in on-site production water indicate that both agents have significant treatment effects. In terms of hydrogen sulfide concentration and production, the treatment effect of Agent I is better than that of Agent II; both drugs have a promoting effect on the proliferation of beneficial bacteria NRB and the inhibitory effect on SRB.

Key words: sulfate reducing bacteria (SRB), volatile organic acids (VFA), hydrogen sulfide treatment, production process