International Association of Oil & Gas Producers
The International Association of Oil & Gas Producers (OGP) is a global forum in which members identify and share best practices to achieve improvements in health, safety, the environment, security, social responsibility, engineering and operations. The association was formed in 1974 to develop effective communications between the upstream industry and an increasingly complex network of international regulators. Originally called the E&P Forum, in 1999 the name International Association of Oil & Gas Producers (OGP) was adopted. Most of the world’s leading publicly traded, private and state-owned oil & gas companies, oil & gas associations and major upstream service companies are members. OGP members produce more than half the world’s oil and about one third of its gas.
Co-operation with other bodies 
OGP also represent the interests of the upstream industry before international regulators and legislators in UN bodies such as the International Maritime Organization and the Commission for Sustainable Development. OGP also works with the World Bank and with the International Organization for Standardization (ISO). It is also accredited to a range of regional bodies that include OSPAR, the Helsinki Commission and the Barcelona Convention, and provides a conduit for advocacy and debate between the upstream industry and the European Union (EU). This involves regular contact with the European Commission and the European Parliament.
European Petroleum Survey Group 
In 2005, OGP absorbed the European Petroleum Survey Group or EPSG, (1986–2005) into its structure. EPSG was a scientific organization with ties to the European petroleum industry consisting of specialists working in applied geodesy, surveying, and cartography related to oil exploration. EPSG compiled and disseminated the EPSG Geodetic Parameter Set, a widely used database of Earth ellipsoids, geodetic datums, geographic and projected coordinate systems, units of measurement, etc.