Investigation of induced microseismicity at Valhall using the Life of Field Seismic array

K. Chambers*, J. M. Kendall, O. Barkved, J Kendall

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)

Abstract

Here we use data from the Life of Field Seismic (LoFS) surface array in conjunction with a migration-style approach to locate microseismic events in Valhall Field during 6.5 hours of hydraulic fracturing. We identify an event distribution that extends roughly 300 m vertically and 200 m horizontally with sources both within the chalk layer, containing the reservoir, and the overburden. However, the temporal distribution of the events is not consistent with the induced fracturing extending into the overburden. Instead, the synchronous increase in event activity with downhole pressure could be interpreted as evidence that elastic wavefronts originating from well activity trigger movement on faults where the in-situ stress is very close to that required for failure.

Original languageEnglish
Pages (from-to)290-295
Number of pages6
JournalLeading Edge
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Mar 2010

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