Figure 6
From: Rock Physical Controls on Production-induced Compaction in the Groningen Field
Acoustic Emission (AE) count (left axis) and pore pressure (right axis) versus axial strain for the full depletion trajectory within a UPPD/M protocol. Sample tested is ZRP-3A_123DV. Note, that no AE activity can be seen during inflation-deflation steps, and that a clear kink in the global AE count versus strain trend can be observed around 14.5∙10−3 axial strain.
