The water injection system in oil fields contains various organic compounds as well as reducing and corrosive substances such as iron and sulfur, which provide favorable conditions for microbial growth. A variety of microorganisms, such as sulfate-reducing bacteria (SRB), iron bacteria, saprophytic bacteria, and others, can proliferate in large numbers, leading to severe corrosion of drilling equipment, injection pipelines, and other metal materials. This can result in pipeline blockages, damage to oil reservoirs, reduced oil production, and lower oil and gas quality, causing significant operational losses. The key to addressing microbial issues in oil fields is the use of biocides to control the bacteria causing these problems. Biocides are widely applied in various stages of oil and gas field development, production, and maintenance. Henning provides a range of biocides for oil and gas fields, effectively solving microbial contamination issues in petroleum and natural gas applications. Additionally, Henning offers weighting agents for oil and gas field drilling fluids, which help enhance the fluid density for better operational efficiency.