In 1959 and again in August 1960, major international oil companies cut posted prices (the reference price used to calculate taxes and royalties in many concession contracts). Many exporting governments saw the cuts as unilateral decisions that reduced national revenue and highlighted how little control producers had over pricing. This set the stage for oil-exporting states to coordinate policy.
Delegates from Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela met in Baghdad and agreed to form the Organization of the Petroleum Exporting Countries (OPEC). The goal was to coordinate petroleum policies and present a more unified position in dealings with multinational oil companies and oil-importing states. This marked a major shift toward producer-country cooperation in the global oil system.
At OPEC’s second meeting in Caracas, the founding members unanimously adopted the organization’s Statute (under Resolution II.6). The Statute formally defined OPEC’s aims, including harmonizing petroleum policies and pursuing more stable oil markets. This helped move OPEC from an initial political agreement to a rules-based organization.
Qatar joined OPEC in 1961, becoming the first country admitted after the five founders. Expansion mattered because it strengthened the idea that producer coordination could extend beyond the original group. It also began a pattern of gradual membership growth through the 1960s.
Indonesia and Libya joined OPEC in 1962, adding members from Southeast Asia and North Africa. Their admission broadened OPEC’s geographic scope and increased the share of global exports represented within the organization. More diverse membership also meant OPEC had to balance different national interests while pursuing common goals.
OPEC was registered with the United Nations in 1962, reinforcing its standing as a recognized intergovernmental organization. This helped legitimize OPEC as more than a temporary coalition and supported its efforts to speak collectively on international economic issues. Formal recognition also aided its ability to engage with other institutions and governments.
OPEC moved its headquarters from Geneva to Vienna on September 1, 1965. Establishing a stable headquarters supported a more permanent secretariat and regularized meetings and administration. The move also reflected OPEC’s intention to operate as a lasting international institution.
Abu Dhabi joined OPEC in 1967, reflecting the growing importance of Persian Gulf production within the organization. Adding major Gulf producers increased OPEC’s long-run capacity to influence global supply conditions. Later, the United Arab Emirates would assume Abu Dhabi’s membership.
During the Six-Day War, several Arab producers announced limits or embargoes on oil shipments to countries seen as supporting Israel. The action was uneven and short-lived, so it did not cause major supply disruption, but it showed how oil policy could be used as a diplomatic tool. These lessons influenced later efforts to coordinate Arab oil actions more effectively.
In January 1968, Kuwait, Libya, and Saudi Arabia signed an agreement in Beirut establishing the Organization of Arab Petroleum Exporting Countries (OAPEC). OAPEC aimed to promote cooperation in the petroleum industry among Arab exporters and reflected interest in tighter regional coordination after the 1967 embargo. While separate from OPEC, its creation shaped the wider “OPEC era” by adding another layer of producer organization.
At a June 1968 meeting in Vienna, OPEC recommended that member governments adopt principles supporting government participation in concession-holding companies where existing contracts did not provide for it. This was an early, explicit move toward greater state control over upstream oil operations (exploration and production). The declaration helped set policy direction for the more assertive producer-state actions of the 1970s.
Algeria joined OPEC in 1969, continuing the organization’s expansion beyond its original founders. Adding members increased OPEC’s representativeness among exporting states and strengthened information-sharing and coordination. By the end of the decade, OPEC had evolved from a new alliance into an established institution preparing for larger market and political challenges ahead.
Founding of OPEC and Early Years (1960–1969)