The article considers the current state of regulatory documents (RD) in the field of core sampling and core studies in the oil and gas industry of the Russian Federation, assesses their relevance, and proposes measures to improve existing or develop missing RD. The current number of valid RD is limited, and they do not ensure standardization of work. Existing local RD developed by specialists of some oil and gas companies are not available to specialists of other companies, which causes difficulties in organizing work on submitting design documents to government agencies. There may be a situation when the same field is divided into two license areas, which belong to two different companies. Practice shows that the results of petrophysical and filtration experiments very often differ due to differences in the approaches used to sample preparation, the characteristics of the equipment used, the conditions of the experiments and the methods for assessing these parameters. When jointly reviewed by the State Reserves Committee and the Central Development Committee of the Russian Federation, the results from different laboratories may raise questions and difficulties in assessing their reliability. In Rosneft Oil Company the core sampling and core studies have a systematic nature. Since 2017, Rosneft Oil Company has used a RD that establishes uniform requirements for conducting core studies, for interaction between participants in the planning, organization and implementation of work on selection, transportation, storage, liquidation, as well as comprehensive core study during geological exploration and development of oil, gas and condensate fields, including offshore fields and fields with hard-to-recover hydrocarbon reserves.
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