Development of information technologies is the steady trend in the in the oil and gas business. To ensure the prompt receipt, storage and analysis of information, it is necessary to create a unified information system that permeates all divisions of the company and connects them into a coherently functioning mechanism. Such a structure of the management system allows obtaining reliable production and financial information throughout all business-units of oil and gas company: exploration – production – processing – transportation – sales – management.This article presents the experience of developing a drilling management information system (ISUB) module that minimizes the risks of complications and accidents during well drilling in order to reduce time and financial costs when drilling wells in the Zarubezhneft Group of Companies. The article describes the creation of a unified information space and tools for planning, monitoring and managing well construction for all levels of management of the Zarubezhneft group of companies through the implementation of the ISUB. In turn, the characteristics of the main blocks of the new module are given, its functional capabilities are described at all levels of well drilling management, and the information flows generated by the module are shown. A detailed overview of all new ISUB software blocks reveals the main technical characteristics and capabilities of this software product. The influence of new ISUB module on the technical and economic indicators of the enterprise is also disclosed. The first results of the development of the new module were summed up; results achieved were noted.