COSL has fully integrated advanced water-based and oil-based fluids systems, the cutting-edge fluids engineering software, the state-of-the-art fluids-assaying technique and advanced analysis equipment, with experienced and highly professional technical management, R&D, and technical support teams. The customers, at home and abroad, onshore and offshore, are assured of safe high-quality services that efficiently address engineering-design and optimization, performance testing, chemicals supply, and on-site service. All of them are compliance with API standards and specifications, by COSL highly experienced drilling/completion fluids engineers.

COSL was designated “Total S.A. International Pre-qualified Contractor” since 2013. COSL drilling and completion fluids services fully comply with all recognized international standards.