KFU’s work presented at Potential of the North of Western Siberia: Resources and Technologies Conference
The event took place on June 3–4 in Tyumen.
The conference, organized by NOVATEK, was joined by employees of a number of Russian and foreign companies, universities, and research institutes, including CNOOC (China), RIPED (China), and Belorusneft.
The main topic of discussion was maintaining production levels at existing gas fields, including gas condensate fields.
The plenary session was entitled “The Second Life of Mature Fields.” Speakers included Andrey Panteleev, Deputy Governor of the Tyumen Region; Alexander Kalinin, First Deputy Governor of the Yamal-Nenets Autonomous Okrug; and Vadim Yakovlev, First Deputy Chairman of the Management Board of NOVATEK; Wu Baocheng, Deputy Director General of the China National Offshore Oil Corporation (CNOOC); and Alexey Vashkevich, Director General of the Gazprom Neft Scientific and Technical Center.
“The conference focused on the development of gas condensate fields. These fields are characterized by very complex dynamic condensation processes in the bottomhole zone of wells, which lead to the formation of so-called ‘condensate banks’ — an area where a significant volume of liquid accumulates, negatively affecting well productivity,” said one of the event participants, Vladislav Sudakov, Deputy Director for Marketing at the Gazprom Neft – KFU Center.
The report “Optimization of the cycling process at gas condensate fields using neural network technologies” was presented at the section “Increasing gas and condensate recovery” by Zalina Saptarova, Engineer at the Laboratory for the Study of the State and Evolution of Underground Reservoirs.
The cycling process is a method of developing gas condensate fields while maintaining reservoir pressure by reinjecting gas into the productive horizon.
“Most gas condensate fields in Russia are developed in a mode of reservoir energy depletion, while abroad, cycling technology has been used since the 1930s and 1940s and allows for higher condensate recovery rates of up to 95 percent,” said Saptarova.
The conference also presented the results of a joint study by representatives of KFU and Gazprom VNIIGAZ on assessing the contribution of inertial effects to the operation of wells with hydraulic fracturing. Neglecting such effects at the fracture design stage, emphasized Alexander Shandrygin, Chief Researcher at Gazprom VNIIGAZ, leads to overestimated values of its conductivity.
