The creation of Pakistan State Oil (PSO) can be traced back to the year 1974, when on January 1st; the government took over and merged Pakistan National Oil (PNO) and Dawood Petroleum Limited (DPL) as Premiere Oil Company Limited (POCL). 

Soon after that, on 3rd June 1974, Petroleum Storage Development Corporation (PSDC) came into existence. PSDC was then renamed as State Oil Company Limited (SOCL) on August 23rd 1976. Following that, the ESSO undertakings were purchased on 15th September 1976 and control was vested in SOCL. The end of that year (30th December 1976) saw the merger of the Premier Oil Company Limited and State Oil Company Limited, giving way to Pakistan state Oil (PSO).

After PSO’s inception, the corporate culture underwent a comprehensive renewal program which was fully implemented in 2004. This program over the years included the revamping of the organizational architecture, rationalization of staff, employee empowerment and transparency in decision making through cross functional teams. This new corporate renewal program has divided the company’s major operations into independent activities supported by legal, financial, informative and other services. Inorder to reinforce and monitor this structural change, related check and balances have been established by incorporating monitoring and control systems.
Human Resource Development became one of the main priorities on the company’s agenda under this corporate reform.

It is due to this effective implementation of corporate reform and consistent application of the best industrial practices and business development strategies, that PSO has been able to maintain its market leadership in a highly competitive business environment.

PSO Step By Step:

January 1, 1974

The federal government took over the management of PNO (Pakistan National Oil) and DPL (Dawood Petroleum Limited), renamed into POCL (Premier Oil Company Limited) under marketing of Petroleum Products (Federal Control Act, 1974)

June 3, 1974

The government incorporates “Petroleum Storage Development Corporation’ PSDC


August 23, 1976

PSCDC renamed to State Oil Company Limited (SOCL)

September 15, 1976

The Governement purchases ESSO undertakings, vests their control in SOCL

December 30, 1976

The Government merges PNO and POCL into SOCL (State Oil Company Limited) and renames it Pakistan State Oil Company Limited (PSO)


The new vision program is launched with the new logo of PSO.