Nonmetallic materials (i.e., elastomers, plastics, and composites) are essential to transport and regulate flow of fluid from production sites to processing sites. In oil and gas production environments, the materials naturally encounter production liquids and gases, including natural gas (CH4, H2), crude oil, formation water, carbon dioxide (CO2), hydrogen sulfide (H2S), in addition to completion brines, organic/inorganic acids, and residual drilling muds. The selection of nonmetallic materials is critical to the structural integrity of oilfield equipment and the safety of rig workers not only in known notoriously hostile environments but also in regular oilfield operations and subsurface water and gas injection.