Hard-to-recover Reserves

Hard-to-recover (HTR) reserves start playing a bigger role in the operations of oil and gas companies. In general, these include economically marginal reserves in conventional reservoirs in case of traditional development by the existing level of technology, utilization of reserves and accessibility of territories under development. STC created its own classification of HTR reserves that takes into account various geological and technological constraints. Based on this classification, almost half of Gazprom Neft’s existing reserves are hard to recover.

Hard-to-recover Reserves

A ramp-up of HTR reserves development is essential for promoting growth and maintaining a high rate of production. One of the key objectives for STC is to identify and evaluate new technologies for development of this reserves category. STC has developed a procedure and related software that enable wide-scale calculations for economic assessment of potential extraction of HTR reserves, as well as for evaluation of the impact of using new technologies with due account to taxation requirements.

Back in 2011, the company initiated development of more than 160 mln tons of HTR reserves and expects to double this amount by 2020. For effective management of HTR reserves, Gazprom Neft employs cutting-edge technologies, such as drilling horizontal and multilateral wells, and uses multistage hydraulic fracturing.

Furthermore, Gazprom Neft organizes annual sectoral research conference on hard-to-recover reserves management.