Title: Improving Event Location Accuracy with Anisotropic Velocity Models
Date: February 19, 2013 at 10:00AM CST
Presenter: Carl Neuhaus, Petroleum Engineer, MicroSeismic, Inc.
Summary:
This month’s webcast focuses on the application of an anisotropic velocity model in determining microseismic event locations from surface-acquired passive seismic data. The Thomsen parameters ε and δ were determined to accurately locate calibration shots to their known location. Hydraulic fracture events were then imaged and compared to their locations derived from processing incorporating an isotropic velocity model. We will show that the anisotropic model improved the absolute average error in calibration shot positioning, in all directions, by almost 30% and the events imaged depicted a more dense and confined zone of microseismic activity.