WATER INJECTION CHEMICALS FOR ENHANCED OIL RECOVERY (EOR)

During the secondary recovery phase in oil production, water injection is critical to maintain reservoir pressure and ensure continued hydrocarbon output. However, injected water—whether sourced from production fluids, rivers, borewells, or the sea—often contains impurities and microbial contaminants that can damage pipelines, reduce efficiency, and promote scaling and corrosion. Thermax offers a comprehensive range of water injection treatment chemicals to combat these challenges and ensure smooth, cost-effective operations.

Key Chemical Solutions for Injection Water Treatment

Injection Water Corrosion Inhibitors

Imidazoline-based amine surfactants.

• Protects pipelines and injection systems from corrosion caused by various water sources

Scale Inhibitors

Custom-formulated polymers (ter-polymers, tetra-polymers).

• With/without organophosphonates to control scale-forming minerals in injected water

Biocides

Effective blends with quaternary compounds and surfactants.

• Controls SRB (sulfate-reducing bacteria) and GAnB, preventing microbial corrosion and biofilm formation

H₂S Scavengers

Cyclic amine and glycol-based formulations.

• Eliminates hydrogen sulfide (H₂S) from water and gas streams for safer operations

Oxygen Scavengers

Bisulfite-based solutions.

• Removes dissolved oxygen from injection water to reduce oxidation and corrosion risk

Antifoams

Silicon and glycol-based defoamers.

• Reduces foam in both water and oil phases to improve fluid handling

Coagulants, Flocculants & Clarifiers

Polymers and iron-based compounds.

• Treats suspended solids in river, seawater, or borewell sources to meet injection quality standards