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Новый метод рок-типизации диагенетически преобразованных карбонатных пород

Е. Швалюк, А. Чистяков, Н. Ба, А. Мухаметдинова, А. Рябухин, М. Спасенных

Оригинальная статья

DOI https://doi.org/10.18599/grs.2023.4.15

203-218
rus.
eng.

open access

Under a Creative Commons license

В статье проводится сопоставление эффективности применения существующих методов рок-типизации карбонатных пород и предлагается альтернативный классификатор.

Для рок-типизации карбонатного коллектора, подвергшегося интенсивному диагенезу, были использованы четыре известных индекса. Однако выделенные с их помощью рок-типы характеризовались низкими коэффициентами корреляции между ключевыми параметрами, использующимися для построения геологической модели и подсчета запасов. Авторами предложен новый индекс KØS, который рассчитывается как функция коэффициентов проницаемости (k), пористости (φ), и остаточной водонасыщенности (Swir). Влияние процессов осадконакопления и диагенеза на параметры нового индекса изучалось методами рентгеновской микротомографии (X-ray microCT) и ядерного-магнитного резонанса (NMR).

Сравнительный анализ предложенного индекса KØS с существующими показал, что у рок-типов, выделенных с его помощью, уравнения регрессии имеют наиболее высокие коэффициенты корреляции между подсчетными параметрами. Более того, каждый выделенный рок-тип обладает отличительной микроструктурой, что подтверждает правомерность предложенного подхода для классификации горных пород.

Так как все компоненты индекса KØS используются при подсчете запасов, и их определение входит в стандартные программы исследования керна, предлагаемый индекс может применяться практически на всех месторождениях углеводородов.

 

карбонатные породы, диагенез, рок-типизация, ЯМР, рентгеновская микротомография, характеристика пород-коллекторов, доломитизация, выщелачивание

 

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Елизавета Швалюк – аспирант, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11
e-mail: elizaveta.shvalyuk@skoltech.ru

Алексей Чистяков – профессор, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11

Нельсон Ба – магистрант, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11

Алия Мухаметдинова – старший научный сотрудник, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11

Антон Рябухин – инженер-исследователь, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11

Михаил Спасенных – профессор, Центр науки и технологий добычи углеводородов, Сколковский институт науки и технологий
Россия, 121205, Москва, ул. Сикорского, д. 11

 

Для цитирования:

Shvalyuk E., Thistiakov A., Bah N., Mukhametdinova A., Ryabukhin A., Spasennykh M. (2023). New rock typing method for diagenetically modified carbonate reservoirs. Georesursy = Georesources, 25(4), pp. 203–218. https://doi.org/10.18599/grs.2023.4.15

 

For citation:

Shvalyuk E., Thistiakov A., Bah N., Mukhametdinova A., Ryabukhin A., Spasennykh M. (2023). New rock typing method for diagenetically modified carbonate reservoirs. Georesursy = Georesources, 25(4), pp. 203–218. https://doi.org/10.18599/grs.2023.4.15