This document discusses the application of geographic information systems (GIS) techniques to exploration and production (E&P) data management and subsurface interpretation. It covers how GIS provides tools for data organization, visualization, querying, editing, spatial analysis, geoprocessing, and prediction. These capabilities allow GIS to be used across various stages of the E&P lifecycle including exploration, drilling, production, refining, transmission, and data management. The document concludes that using GIS in the oil and gas industry enables better decision making, cost savings and efficiency gains, and improved communication.