Distributed Acoustic Sensing (DAS) fiber-optic systems can detect microseismic events during hydraulic fracturing of the same (in-well) or a neighboring (cross-well) treatment well. With a single non-deviated well, event locations are limited to determining the position of the event along the fiber and distance of the event from the fiber ? a unique 3D location cannot be obtained. While this limits our ability to estimate the source mechanism of events, we use patterns in the event amplitudes to categorize events into different types and determine the orientation of some nodal planes. The results show changes in amplitude patterns and nodal plane estimates for some stages.
Presentation Date: Wednesday, October 17, 2018
Start Time: 1:50:00 PM
Location: 212A (Anaheim Convention Center)
Presentation Type: Oral