This paper presents the analysis results of a wide range of corrosion deposits, scale deposits, and sludge collected from various components within the oil and gas upstream well/production systems. The accumulation of corrosion deposits within equipment can lead to catastrophic failures and unplanned shutdowns of well/production operations. Therefore, understanding the nature of these deposits and identifying their composition is crucial. This study aims to identify the phases and compounds present in corrosion deposits and determine their source. Furthermore, the identification and characterization of these deposits assist clients in determining the underlying causes of corrosion, enabling the development of effective corrosion mitigation strategies. The X-ray Powder Diffraction (XRD) data presented in this paper serves as a valuable resource for clients during major problems and shutdowns, as no comprehensive database of this nature currently exists. The paper also outlines the sample preparation and analysis procedures employed to examine these corrosion deposits thoroughly.