Физико-химические особенности фильтрации углеводородного флюида в нефтематеринских породах: адсорбция и диффузия

Достоверные данные об относительной проницаемости низкопроницаемых нефтематеринских пород пластов имеют ключевое значение для оптимизации разработки и эксплуатации месторождений за счет повышения точности гидродинамических моделей. Основными трудностями при изучении подобных систем являются ограниченность экспериментальных данных, обусловленная недоступностью кернового материала, а также неприменимость стандартных лабораторных методик из-за ряда свойств изучаемых объектов, таких как низкая пористость и проницаемость, высокое содержание органического вещества, включая кероген.

Исследование влияния таких факторов, как сверхнизкое межфазное натяжение, адсорбция и диффузия, на транспорт флюидов в условиях моделируемого пласта является крайне важным. Однако на сегодняшний день механизмы адсорбции и диффузии углеводородных газов остаются недостаточно изученными в научной литературе.

Цель данного обзора — предоставить всесторонний анализ опубликованных работ по адсорбции и диффузии газа в низкопроницаемых нефтематеринских породах. В рамках данной работы, была проведена оценка влияния различных свойств пород на поведение флюидов в наномасштабных порах и выделены будущие направления для дальнейших исследований. Предложенный обзор способствует улучшению интеграции данных адсорбции и диффузии углеводородных газов в гидродинамических моделях, тем самым повышая точность оценки извлекаемых запасов и снижая экономические риски при разработке труднопостроенных месторождений.

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