Vol. 8 pp. 314-326

S. P. Primina, S. S. Tokareva, A. V. Gulyaev, V. V. Sokovikov, V. A. Amosov

APPLICATION OF MULTILATERAL WELL DRILLING TECHNOLOGY IN LOW-PERMEABILITY ZONES OF MIXED SATURATION AT GAS AND GAS-CONDENSATE FIELDS (A CASE STUDY OF THE KOVYKTA GAS-CONDENSATE FIELD)

Annotation. The article presents the results of multilateral well drilling at the Kovykta gas-condensate field, where this technology is applied as the most promising completion method under conditions of high water influx risk. The Parfenovsky horizon, which serves as the reservoir for this field, is characterized by low permeability and a highly fractured structure. According to the project documentation, field development is carried out through drilling of horizontal wells followed by hydraulic fracturing. However, in mixed-saturation zones, hydraulic fracturing carries a risk of premature water breakthrough, which may negatively affect operational performance. The proposed alternative well design has proven its efficiency in low-permeability mixed-saturation zones without the risk of water inflow. Field gas-hydrodynamic survey data obtained under steady-state filtration conditions, along with their interpretation results, were used in the study. For production analysis across different scenarios, a geological-hydrodynamic model of the Kovykta gas-condensate field was employed.

Keywords: multilateral wells, low-permeability reservoir, hydrodynamic model, horizontal and lateral wellbores.

For citation: Primina S. P., Tokareva S. S., Gulyaev A. V., Sokovikov V. V., Amosov V. A. [Аpplication of multilateral well drilling technology in low-permeability zones of mixed saturation at gas and gas-condensate fields (a case study of the kovykta gas-condensate field)]. Upravlenie tekhnosferoi, 2024, vol. 8, issue 2, рр. 314–326. DOI: 10.35634/UdSU.2025.44.14.013. (In Russ.).

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About the Authors

Primina Svetlana Pavlovna

Candidate of Geological and Mineralogical Sciences, Associate Professor, Head of the Department of Oil and Gas Geology, Dean of the Faculty of Geology, IGU, 664011 Irkutsk, Lenin St., 3. Russia.

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Tokareva Svetlana Sergeevna

Senior Lecturer at the Department of Oil and Gas Geology, Faculty of Geology, IGU, 664011 Irkutsk, Lenin St., 3, Russia.

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Gulyaev, Alexander Vladimirovich

The leading geologist of the department of geological and technical measures of Gazprom Dobycha Irkutsk LLC, 664011 Irkutsk, Nizhnyaya Embankment street, 14. Russia.

Sokovikov Vasily Viktorovich

Head of the Geological and Technical Measures Department, Gazprom Dobycha Irkutsk, 664011 Irkutsk, Nizhnyaya Embankment St., 14, Russia.

Amosov Viktor Andreevich

4th year student of the Faculty of Geology, IGU, 05.03.01 (B) Geology, profile "Geology, development of oil and gas fields", 664011 Irkutsk, Lenin St., 3. Russia.

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