巴基斯坦石油集团(PSO)的创建可以追溯到1974年1月1日。政府接管了巴基斯坦国家石油公司(PNO)和达伍德石油有限公司(DPL)，将其合并为Premiereoil Company Limited (POCL)，并设立旗下子公司PSO润滑油集团。
此后不久,1974年6月3日，石油存储开发公司(PSDC)成立。1976年8月23日，PSDC被更名为State Oil company Limited(SOCL)。此后，1976年9月15日购买了ESSO事业，并将控制权归属于SOCL，那年年底(1976年12月30日)，Premier Oil company Limited和State Oil companyLimited合并，让位给巴基斯坦国家石油公司旗下子公司PSO润滑油集团。
在PSO成立之后，公司文化经历了全面的更新计划，该计划于2004年全面实施。多年来，该计划包括组织结构的调整，员工合理化，员工授权以及跨职能团队的决策透明化。这个新的公司续订计划将公司的主要业务划分为独立的活动，并通过法律；财务，信息和其他服务来支持。为了加强和监视这种结构性变化，已通过合并监视和控制系统来建立相关的制衡。
正是由于公司改革的有效实施以及最佳工业实践和业务发展战略的不断应用，PSO才得以在竞争激烈的润滑油业务环境中保持其市场领导地位。

The establishment of Pakistan Petroleum Group (PSO) dates back to January 1,1974.The government took overPakistan National Petroleum Corporation (PNO) and Dawood Petroleum Co., Ltd.(DPL), merged them into premieroil Company Limited (POCl), and established its subsidiary PSO lubricating oil group.
Shortly thereafter, on June 3,1974, the petroleum storage and development company (PSDC) was established.OnAugust 23,1976,PSDC was renamed State oil Company Limited (SOcl). Thereafter, on September 15,1976, thecompany purchased Esso business and vested the control in SOCI. At the end of that year(December 30,1976),Premier oil Company Limited and State oil Company Limited merged and gave way to PSO lubricating oil group, asubsidiary of Pakistan National Petroleum Corporation.
After the establishment of PSO, the company's culture has undergone a comprehensive renewal plan, which wasfully implemented in 2004.Over the years, the plan includes the adjustment of organizational structure, rationaliza-tion of employees, employee authorization and transparency of decision-making of cross functional teams.Thenew company renewal plan divides the company's main business into independent activities and is supported bylegal, financial, information and other services. In order to strengthen and monitor this structural change, relevantchecks and balances have been established through the consolidation of monitoring and control systems.
lt is due to the effective implementation of the company's reform and the continuous application of best industrialpractices and business development strategies that PSO can maintain its market leading position in the highlycompetitive lubricating oil business environment.