To ensure the maintenance and growth of cost-effective oil production in the fields of Western Siberia, in the face of an objective deterioration in the structure of current reserves, it is necessary to use modern, innovative approaches and development technologies. One of such technologies for LUKOIL-Western Siberia LLC was the development of hydrocarbon deposits in multilateral wells. Currently, the technical aspects of the construction of multilateral wells are not difficult. The method is applied on an industrial scale. More than 200 wells have been drilled in 24 fields. With such a significant number of multilateral wells constructed, it is worth noting that the practical experience of their application in the framework of regular development systems for individual independent oil deposits of LUKOIL-Western Siberia LLC is not so great. The reasons for this situation are obvious; the current drilling is largely confined to the oil deposits of the developed fields. Accordingly, there is the use of multilateral wells as part of already formed development systems. Maintaining reservoir pressure in most cases is carried out by directional injection wells. Injection of a working agent into injection wells with horizontal completion often has the status of pilot works. Placement of horizontal and multilateral wells is carried out in accordance with classical development systems designed for vertical wells or single-hole horizontal wells. An example of the design and formation of development systems for multilateral wells is the Pyakyakhinskoye field, the main oil facilities of which are fully drilled by multilateral wells. Formation pressure is maintained by injection horizontal wells. New fields of LUKOIL-Western Siberia LLC, such as: Imilorskoye, Zapadno-Pokamasovskoye, Vostochno-Ikilorskoye, are commissioned using multilateral wells as part of independent development systems. he large-scale use of multilateral wells requires the introduction of development systems adapted to the filtration conditions of formation fluids. The article presents the experience of designing and the actual implementation of development systems using multilateral wells in the fields of LUKOIL-Western Siberia LLC, conclusions and recommendations are made.
References
1. Bakirov D.L., Fattakhov M.M., Mnogozaboynye skvazhiny: prakticheskiy opyt Zapadnoy Sibiri (Multilateral wells: practical experience of Western Siberia), Tyumen': Tyumenskiy dom pechati Publ., 2015, 232 p.
2. Patent no. RU2016117788A, Oil deposit development method, Inventors: Zaytsev A.V., Mavletdinov M.G., Solyanov S.A.
