|
ИСТИНА |
Войти в систему Регистрация |
Интеллектуальная Система Тематического Исследования НАукометрических данных |
||
Initiation of Rock Fracture by Fluids of Different Viscositiesстатья
- Авторы: Kartseva TI, Smirnov VB, Patonin AV, Sergeev DS, Shikhova NM, Ponomarev AV, Stroganova SM, Mikhailov VO
- Журнал: Izvestiya. Physics of the Solid Earth
- Том: 58
- Номер: 4
- Год издания: 2022
- Издательство: Pleiades Publishing, Inc.
- Местоположение издательства: New York, USA
- Первая страница: 576
- Последняя страница: 590
- Оригинальные версии: ИНИЦИАЦИЯ РАЗРУШЕНИЯ ГОРНЫХ ПОРОД ФЛЮИДАМИ РАЗНОЙ ВЯЗКОСТИ
- DOI: 10.1134/S106935132204005X
- Аннотация: The acoustic emission (AE) patterns observed in laboratory conditions at the initiation of fracturein rock samples by fluids of different viscosities are revealed. A series of experiments with sandstones andgranites of order-of-magnitude different porosities and fluids of viscosities ranging within two orders of magnitudehave been conducted. The effects of fluid injection into dry samples and pore pressure increase in saturatedsamples are examined. Pore pressure was varied both in abrupt steps and in smooth increase-anddecreasecycles. In the case of fluid injection into dry samples, the time delay of AE activation correspondsto the fluid front propagation time calculated in the piston-type model of air displacement by a fluid in a porespace. In the case of fracture initiation by steps in pore fluid pressure in saturated samples, the time delay ofthe response is substantially longer than predicted by the linear piezo conductivity model with constanthydraulic diffusivity and significantly shorter than the time of fluid front propagation in a dry sample. Theexperiments with smooth variations in the pore pressure in saturated samples revealed characteristic changesin AE activity: the minimum b-values (slope of magnitude–frequency relationship) fall in the intervals of themaxima in acoustic responses, and the maximum b-values occur during the rise and fall phases of pore pressure.The results of the experiments on the rock samples of different porosities with fluids of different viscositiescan be useful in the analysis of field data both in the regions of anthropogenic seismicity associated withreservoir operation and fluid injection in wells and in the interpretation of the seismicity patterns due to tectonicand volcanic activity in the subduction zones.
- Добавил в систему: Смирнов Владимир Борисович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | экспертное заключение | Ekspertiza_Vyazkost_2611_220210141514_001.pdf | 521,2 КБ | 31 марта 2023 [MikhailovVO] |