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Active Mapping Of Geologic Structures Using Microseismicity And Their Role In Large Magnitude Occurrences Associated With Water FloodingNormal access

Authors: I. Nizkous and T. Urbancic
Event name: Seventh EAGE Workshop on Passive Seismic 2018
Session: PSW Poster Session 2
Publication date: 26 March 2017
DOI: 10.3997/2214-4609.201800054
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 850.09Kb )
Price: € 20

Summary:
Capturing information on geologic structures in reservoirs into geo-cellular models traditionally has relied on the use of seismic data when no surficial evidence is found. In many ways, the resolution of these data sets may be insufficient to identify not only structures that could affect reservoir performance but the dynamic response to the common production and enhanced oil recovery. Conventional seismic structural interpretation has no additional information about how these structures behave in the presence of a dynamic stress field resulting from different injection based EOR approaches, for example, water flood, steam or gas operations. In this paper, we outline how long term micro-earthquake monitoring of a reservoir can not only be used to identify these potentially hazardous geologic structures, but through collective behavior of micro-earthquakes we can identify the spatial variability in deformation and stress associated with any particular fault zone, which consists of several active parts that can behave differently over time.


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