УДК 622.023/.276:553.982
(UDK 622.023/.276:553.982)
(RESULTS OF BENCH-SCALE STUDIES OF THE SAND-ROLLING PROCESS ON A LOW-DIMENSIONAL BULK MODEL OF A WEAKLY CONSOLIDATED RESERVOIR)
В статье представлены результаты лабораторных исследований, целью которых было установление степени влияния на процесс пескопроявления перепада давления при фильтрации, а также изучение влияния водо- и газонасыщенности коллектора на процесс выноса механических примесей. Программа исследований состояла из серии фильтрационных экспериментов, проведенных на маломерной модели с фиксированным гранулометрическим составом механических примесей, сходным с гранулометрическим составом примесей пласта-коллектора в условиях, моделирующих пластовые по давлению. В целях количественной оценки результатов определялись количество и гранулометрический состав взвешенных в жидкости частиц породы на выходе с лабораторного стенда, собранного авторами статьи на базе Санкт-Петербургского горного университета.
В результате исследований установлено, что увеличение водонасыщенности пласта-коллектора приводит к росту концентрации взвешенных частиц, тогда как при увеличении газонасыщенности значение данного показателя для фильтр-элементов с небольшими размерами щелей уменьшается. Выявлены зависимости количества, грануло-метрического состава вынесенных частиц и коэффициента относительного изменения проницаемости от перепада давления и насыщенности породы. Кроме того, отработана методика проведения фильтрационных экспериментов на насыпных моделях пласта для оценки эффективности работы скважинных фильтров в условиях активного выноса песка.
The paper presents the results of laboratory studies aimed at determining the extent to which filtration differential pressure affects the sand-exposure process, as well as studying the effect of water and gas saturation of the reservoir on the process of mechanical impurities carry-over. The research programme consisted of a series of filtration experiments carried out on a small-scale model with a fixed grain-size composition of mechanical impurities similar to that of the reservoir impurities under pressure-simulating reservoir conditions. In order to quantify the results, the quantity and particle size distribution of rock particles suspended in the fluid at the outlet of the laboratory bench assembled by the authors of the article at the Saint Petersburg Mining University was determined.
It was found as a result of the study that increasing water saturation of the reservoir bed leads to increasing concentration of suspended solids, while increasing gas saturation results in decreasing this parameter for the filter-elements with small slot sizes. The dependencies of the number and particle size distribution of the ejected particles and the coefficient of relative permeability change on the pressure drop and rock saturation have been found out. In addition, a technique was developed for conducting filtration experiments on bulk reservoir models to assess the efficiency of borehole filters under conditions of active sand outwash.
Д.С. Тананыхин1, e-mail: Tananykhin_DS@pers.spmi.ru
Т.И. Соловьев2, e-mail: SolovevTI@skn.rosneft.ru
М.И. Королев1, e-mail: korolevhik@yandex.ru
М.Б. Григорьев1, e-mail: makcum1298@mail.ru
Н.Н. Михайлов3, e-mail: folko200@mail.ru
1 Федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» (Санкт-Петербург, Россия).
2 ООО «СевКомНефтегаз» (Губкинский, Россия).
3 Федеральное государственное автономное образовательное учреждение высшего образования «Российский государственный университет нефти и газа (Национальный исследовательский университет) имени И.М. Губкина» (Москва, Россия).
D.S. Tananykhin1, e-mail: Tananykhin_DS@pers.spmi.ru
T.I. Soloviev2, e-mail: SolovevTI@skn.rosneft.ru
M.I. Korolev1, e-mail: korolevhik@yandex.ru
M.B. Grigoriev1, e-mail: makcum1298@mail.ru
N.N. Mikhailov3, e-mail: folko200@mail.ru
1 Federal State Budgetary Educational Institution of Higher Education “Saint Petersburg Mining University” (Saint Petersburg, Russia).
2 SevKomNeftegas LLC (Gubkinsky, Russia).
3 Federal State Autonomous Educational Institution for Higher Education “Gubkin Russian State University of Oil and Gas (National Research University)” (Moscow, Russia).
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Edelman I., Ivantsov N., Shandrygin A. et al. Approaches to Development of High-Viscosity Oil Fields in Arctic Conditions Using the Example of the Russkoe Field. Paper presented at the SPE Arctic and Extreme Environments Conference and Exhibition. Moscow, Russia, October 2011. Paper No: SPE-149917-MS. URL: https://doi.org/10.2118/149917-MS.
Soroush M., Roostaei M., Mohammadtabar M. et al. Design for Reliability: Purpose Driven Sand Control Methods for Cased and Perforated Wells. Paper presented at the SPE Annual Technical Conference and Exhibition. Virtual. October 2020. Paper No: SPE-201315-MS. URL: https://doi.org/10.2118/201315-MS.
King G.E. Sand Control Overview. Houston: King Engineering Company; 2009.
Betekhtin A.N., Kostin D.K., Tikhomirov E.V. et al. Laboratory Studies of Sand Control Systems Used for Heavy Oil Production from Unconsolidated Rocks. Paper presented at the SPE Russian Petroleum Technology Conference. Moscow, Russia, October 2017. Paper No: SPE-187879-MS. URL: https://doi.org/10.2118/187879-MS.
Grigorev M.B., Tananykhin D.S., Poroshin M.A. Sand Management Approach for a Field with High Viscosity Oil. Journal of Applied Engineering Science. 2020;18(1):64–69.
Al-Awad M.N., El-sayed A.H., Desouky S.E. Factors Affecting Sand Production from Unconsolidated Sandstone Saudi Oil and Gas Reservoir. Journal of King Saud University: Engineering Sciences. 1999;(11):151–172.
Mahmoudi M., Roostaei M., Fattahpour V. et al. Standalone Sand Control Failure: The Role of Wellbore and Near Wellbore Hydro-Thermo-Chemical Phenomenon on the Plugging and the Flow Performance Impairments of the Standalone Sand Screen. Paper presented at the SPE Thermal Well Integrity and Design Symposium. Banff, Alberta, Canada, November 2018. Paper No: SPE-193355-MS. URL: https://doi.org/10.2118/193355-MS.
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