Article investigates the problem of development of GIS technologies and their usage during regulatory decision taking on different levels, particularly in major oil and gas companies. There are examples of effective usage of Web-GIS in Ukraine and abroad. The necessity of large-scale implementation of GIS technologies and portal solutions in the system of National Joint Stock Company «Naftogaz of Ukraine» is grounded.
Thus, geoinformation technologies use on some enterprises which are the system members of National joint-stock company «Naftogaz of Ukraine» in different degree, but they grounds on different platforms and are not united in single geoinformation system which would allow to do a complex data analysis and accept effective management decisions as in regional as in state scales.
Keywords: GIS, infrastructure of oil and gas industry, web portal, database, interface.