The increasing popularity and advances in the development of GIS in recent years has increased its use manifold in almost all fields of life generally and in geosciences particularly, due to the robust integration of spatial features and tabular data, spatial analysis capability, intelligent maps, and a geographic user interface to the databases. This paper will present the case studies illustrating the benefits that can be derived from GIS and Remote Sensing technologies in the exploration and exploitation of hydrocarbons. Exploration Management System along with its front-end Geographic Information System, a graphical interface for quick analysis and decisions, was developed for upstream petroleum activities of Pakistan. It has not only helped to maintain its exploration monitoring data up-to-date for over a decade rather it has also proved useful in generating revenue through the services like data management and PPIS etc.