Аннотация. Баженовская свита, распространённая на территории свыше 1 млн. км 2 , содержит в себе колоссальные ресурсы нефти. Промышленная разработка данного объекта, в отличие от сланцевых формаций США, была начата относительно недавно, это связано со сложными геолого-физическими условиями залегания свиты. Однако, ежегодное повышение спроса на энергоресурсы и снижение «традиционных» запасов нефти возобновило интерес нефтедобывающих компаний к нетрадиционным ресурсам углеводородов. Высокие пластовые температуры и давления, отсутствие «традиционных» коллекторов, низкие значения фильтрационно-емкостных свойств-это часть проблем, с которыми приходится сталкиваться специалистам при освоении запасов баженовской свиты. Применение методов интенсификации притока нефти из пластов баженовской свиты требует тщательного подхода к проведению лабораторных экспериментов, подбору химических реактивов и технологий, которые повысят вероятность улучшения фильтрационно-емкостных свойств призабойной зоны и не навредят нефтепромысловому оборудованию и технике.

There has been an increased interest in horizontal wells production logging using markers due to objective difficulties not only in conducting geophysical production logging and data interpretation, but also because existing technologies provide bottom hole data only for a very short time period when the PLT complex is in the well. Marker technologies enable users to obtain data in a much larger volume and practically non-stop for several years without changing the well mode of operation. This in turn allows for analyzing the influence of many external factors on the horizontal well intervals operation. This article presents the experience of marker technologies that were tested and implemented at Gazpromneft PJSC sites from 2016 to 2019, and is aimed at the systematization of objectives and requirements for the technology, as well as addressing important issues during the tendering procedures for the oil producing companies.

Significant progress in technologies development of well completion and stimulation allowed to involve in the development of reserves which 10 years ago were considered unpromising due to the too low reservoir permeability. Particularly significant influence of modern achievements on shale beds, which were previously not seriously considered as possible objects for hydrocarbon production. The success of shale oil production in the United States inspires oil companies around the world to study the possibility for the development of such objects. On the territory of the Russian Federation is perhaps the largest area of shale formation of the world – Bazhenov formation. In 2016, PJSC Gazprom Neft for the first time for the Bazhenov formation implemented a full cycle of construction of a horizontal well with a Multi-Stage Fracturing, which on the level of the applied technological solutions is not inferior to the American analogues used in the United States for shale oil production. The length of the horizontal section of the well was more than 1000 m; the 114 mm liner OD was run in and cemented. The cementing operation was carried out with liner rotation, and the cement blend itself contained specially selected additives which were designed to ensure high resistance of the cement stone to the damaging effects from multi-stage fracturing. The experience in drilling and cementing, completion and production operation of the well turned out to be positive, and in 2018, a pilot project started drilling a whole series of horizontal wells with multi-stage fracturing at two well sites. During the implementation of the project was found a stable relationship between the well production and the efficiency of fracturing, which is significantly affected by the isolation the anulus.

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