Reviewed is a corporate information system development project, which is currently being realized in Open Joint Stock Association "Surgutneftegas". One of the project features is an evolutionary character of involvement into corporation＇s unified information space of information and applied program systems of different origin, including technological processes management systems. Article is prepared on the basis of technical assignments and other documents on already realized and prospective projects of industrial department "SurgutASUneft" in the field of Open Joint Stock Association "Surgutneftegas" informatization.