This book is a compilation of selected papers from the 4th International Petroleum and Petrochemical Technology Conference (IPPTC 2020). The proceedings focus on Static & Dynamic Reservoir Evaluation and Management; Drilling, Production and Oilfield Chemistry; Storage, Transportation and Flow Assurance; Refinery and Petrochemical Engineering; Machinery, Materials and Corrosion Protection. The conference not only provides a platform to exchanges experience, but also promotes the development of scientific research in oil & gas exploration and production. The main audience for the work includes industry experts, leading engineers, researchers and technical managers as well as university scholars.