Non-double couple microseismic events - Evidence from the laboratory

I. A.Vera Rodriguez, S. Stanchits

Результат исследований: Глава в книге, отчете, сборнике статейМатериалы для конференциирецензирование

1 Цитирования (Scopus)

Аннотация

Source mechanism is an attribute of interest in acoustic emission (AE) analysis which has been used to determine the nature of failure during laboratory experiments. In this abstract, we present the results of the moment tensor inversion of AEs recorded during the hydraulic fracturing of a Colton sandstone block at triaxial stress conditions. The source geometries given by the biaxial decomposition of the moment tensor solutions contain a family of auxiliary planes lying parallel to the orientation of the main hydraulic fracture's plane. During fracture propagation, most AEs were concentrated near the edge of the fracture, reflecting a tensile stress regime with opening angles mostly around 30 degrees. After breakdown, the pumps were reversed to withdraw fluid from the borehole. At this point, the stress field became compressive with AEs distributed across the complete face of the hydraulic fracture showing source mechanisms that reflected the closing of the fracture's plane. Closing angles were in general lower in magnitude than opening angles.

Язык оригиналаАнглийский
Название основной публикации79th EAGE Conference and Exhibition 2017
ИздательEuropean Association of Geoscientists and Engineers, EAGE
ISBN (электронное издание)9789462822177
СостояниеОпубликовано - 2017
Опубликовано для внешнего пользованияДа
Событие79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter - Paris, Франция
Продолжительность: 12 июн. 201715 июн. 2017

Серия публикаций

Название79th EAGE Conference and Exhibition 2017

Конференция

Конференция79th EAGE Conference and Exhibition 2017: Energy, Technology, Sustainability - Time to Open a New Chapter
Страна/TерриторияФранция
ГородParis
Период12/06/1715/06/17

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