Новые достижения в области бурения в песчаниковых, сланцевых и карбонатных формациях на примере исследования пяти крупных месторождений в Месопотамском бассейне Ирака

Новые достижения в области бурения в песчаниковых, сланцевых и карбонатных формациях на примере исследования пяти крупных месторождений в Месопотамском бассейне Ирака

Автор: Аль-дуджайли А.Н.

Журнал: Горные науки и технологии @gornye-nauki-tekhnologii

Рубрика: Геология месторождений полезных ископаемых

Статья в выпуске: 4 т.9, 2024 года.

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Проблемы бурения в Месопотамском бассейне (нефтегазоносном бассейне Персидского залива) (южная часть Ирака) разнообразны и касаются таких вопросов, как потери бурового раствора, поломка долота и дифференциальный прихват. Цель настоящего исследования заключается в анализе указанных проблем по всему стратиграфическому разрезу в исследуемом районе. Согласно полученным результатам долота MMD65R, EQH16R и SF74R отлично проявили себя для бурения 16-дюймового профиля, а долото MSi616L показало наибольшую эффективность в 12¼-дюймовом профиле. Для 8½-дюймового профиля было успешно использовано долото MMD65R, а для остальных участков этого профиля применялось EQH12DR. Для долота MMD54 зарегистрированы отличные показатели - наибольшая механическая скорость бурения (ROP) 26,9 м/ч в горизонтальных профилях скважины. Потери бурового раствора чаще всего наблюдались в основании формаций Даммам, Рус, Танума, Мишриф, Харта, Шуайба и Зубейр. Для формаций Зубейр и Мишриф рекомендуется плотность бурового раствора 1,28 г/см3. Кроме того, во избежание пульсации или свабирования скважины спускоподъемные операции необходимо выполнять с контролируемой скоростью. Концентрация хлористого калия должна поддерживаться в пределах от 3 до 5 %. Для изоляции пластов формаций Мишриф и Зубейр следует спустить и правильно установить 7-дюймовую эксплуатационную обсадную колонну с перекрыванием для предотвращения возможного сообщения между нижними водоносными зонами и приповерхностными областями поглощения.

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Углеводороды, месторождение, запасы, бассейн, формация, добыча, бурение, скважина, производительность, раствор, авария, потери бурового раствора, коллектор, долото, план бурения, крутящий момент, управление, месопотамский бассейн, ирак

Короткий адрес: https://sciup.org/140308542

IDR: 140308542   |   DOI: 10.17073/2500-0632-2023-08-146

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