Described are new and modernized components of information system of oil producing industrial-technological complex Open Joint Stock Association "Yuganskneftegas". Reviewed are system structure, its data base, under-system of well data processing, preparation of required geological reports, information-searching under-system, under-system of producing geological and technological maps, registration of electric submersible well equipment. Developed under-systems are typical, accessible for circulation at enterprises and oil companies of the country.