georesГеоресурсыGeoresources1608-50431608-5078Georesursy LLC10.18599/grs.2024.1.10geores-235Research ArticleСТАТЬИRESEARCH ARTICLESВосстановление проницаемости горной породы, ухудшенной жидкостью глушения скважин, с помощью ультразвуковых колебаний: экспериментальные исследованияRestoration of Rock Permeability Degraded by Well Killing Fluid Using Ultrasonic Vibrations: Experimental StudiesРябоконьЕ. П.RiabokonE. P.

Евгений Павлович Рябоконь – научный сотрудник кафедры нефтегазовых технологий

614990, Пермь, Комсомольский пр-т, д. 29

Evgenii P. Riabokon – Researcher, Department of Oil and Gas Technologies

29, Komsomolskiy ave., Perm, 614990

riabokon@pstu.ruТурбаковМ. С.TurbakovM. S.

Михаил Сергеевич Турбаков – канд. тех. наук, доцент, главный научный сотрудник кафедры нефтегазовых технологий

614990, Пермь, Комсомольский пр-т, д. 29

Mikhail S. Turbakov – Cand. Sci. (Engineering), Associate Professor, Chief Researcher, Department of Oil and Gas Technologies

29, Komsomolskiy ave., Perm, 614990

msturbakov@gmail.comГладкихЕ. А.GladkikhE. A.

Евгений Александрович Гладких – канд. тех. наук, старший научный сотрудник кафедры нефтегазовых технологий

614990, Пермь, Комсомольский пр-т, д. 29

Evgenii A. Gladkikh – Cand. Sci. (Engineering), Senior Researcher, Department of Oil and Gas Technologies

29, Komsomolskiy ave., Perm, 614990

gladkih.ea@mail.ruКожевниковЕ. В.KozhevnikovE. V.

Евгений Васильевич Кожевников – канд. тех. наук, старший научный сотрудник кафедры нефтегазовых технологий

614990, Пермь, Комсомольский пр-т, д. 29

Evgenii V. Kozhevnikov – Cand. Sci. (Engineering), Senior Researcher, Department of Oil and Gas Technologies

29, Komsomolskiy ave., Perm, 614990

kozhevnikov_evg@mail.ruГузевМ. А.GuzevM. A.

Гузев Михаил Александрович – доктор физ.-мат. наук, академик РАН, главный научный сотрудник кафедры нефтегазовых технологий

614990, Пермь, Комсомольский пр-т, д. 29

Mikhail A. Guzev – Dr. Sci. (Physics and Mathematics), Academician of the Russian Academy of Sciences, Chief Researcher, Department of Oil and Gas Technologies

29, Komsomolskiy ave., Perm, 614990

guzev@iam.dvo.ruПермский национальный исследовательский политехнический университетРоссияPerm National Research Polytechnic UniversityRussian Federation202406062024261118126Copyright © Рябоконь Е.П., Турбаков М.С., Гладких Е.А., Кожевников Е.В., Гузев М.А., 20242024Рябоконь Е.П., Турбаков М.С., Гладких Е.А., Кожевников Е.В., Гузев М.А.Riabokon E.P., Turbakov M.S., Gladkikh E.A., Kozhevnikov E.V., Guzev M.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.geors.ru/jour/article/view/235

В процессе эксплуатации скважин жидкости глушения ухудшают проницаемость пород в призабойной зоне пласта, что приводит к снижению дебита скважин. В работе экспериментально изучено влияние ультразвуковых колебаний на восстановление проницаемости осадочных пород на разработанном лабораторном стенде. В качестве фильтрующей пористой среды используются песчаники. Керосин используется в качестве фильтрующей жидкости. Раствор хлорида кальция используется в качестве жидкости для глушения скважин. Лабораторный эксперимент имитирует ухудшение проницаемости горной породы путем прокачки жидкости глушения через образцы горных пород. После создания зоны ухудшенной проницаемости образец горной породы промывается керосином в прямом направлении до стабилизации проницаемости. Затем выполняется фильтрация пластовой жидкости в прямом направлении в скважину, в которой установлен генератор ультразвуковых колебаний, посылающий колебания в прискважинную зону пласта в сторону фильтрующегося керосина. Фильтрация керосина осуществляется в условиях ультразвуковой вибрации. Выявлено, что в условиях ультразвуковых колебаний поровое пространство породы частично разблокируется, и проницаемость горных пород частично восстанавливается. Выполнен анализ механизма блокировки порового пространства жидкостью глушения скважин и восстановления проницаемости породы.

The operation of oil production wells is accompanied by the invasion of well killing fluids into a near wellbore zone while well intervention which deteriorates rock permeability and decreases well oil rate. In order to restore the permeability of the rock in the near wellbore zone of the formation, it is proposed in this work to use ultrasonic alternating loading during well inflow stimulation. To study the effect of alternating loading on the permeability of rocks, a laboratory set-up is developed and filtration experiments are carried out. The rock studied was sandstone of medium permeability. The experimental studies included four stages: filtration of the killing fluid (calcium chloride solution) in the forward direction (simulating well killing); keeping the sample in conditions of pumped kill fluid; filtration of kerosene in the opposite direction (simulating an inflow stimulation) until the maximum possible restoration of permeability; filtration of kerosene in the reverse direction under ultrasonic alternating loading conditions for additional permeability restoration. It was revealed, that under conditions of ultrasonic alternating loading, the pore space of the rock, previously blocked by particles of the killing fluid, is unblocked and the permeability of the samples is restored. An analysis was made of the mechanism of blocking the pore space with the killing fluid and restoring the permeability of the rock.

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The authors declare that there are no conflicts of interest present.