One committee in ISO and one in CEN deals with topics related to the oil and gas industry.
ISO/TC 67 Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries
Useful ISO links
Overview on ISO standards for petroleum industry (pdf, A3 format)
Catalogue of international standards used in the petroleum and natural gas industries (OGP).
CEN/TC 12 Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries
Standardisation of the materials, equipment and offshore structures used in drilling, production, refining and the transport by pipelines of petroleum and natural gas, excluding on-land supply systems used by the gas supply industry and those aspects of offshore structures covered by IMO requirements (ISO/TC 8).
The standardisation is to be achieved wherever possible by the adoption of ISO standards.
Note: The CEN/TC 12 standards are mainly developed through the Vienna Agreement with ISO/TC 67.
Useful CEN links
CEN/TC 12 web site (including scope, structure, organisation, member list, published standards, work programme, etc.)