Webinar – Microseismic measurements in geothermal; 3 February 2025
"Microseismic Measurements – Ensuring Fracture Model Represents Reality" - webinar by SPE Geothermal Technical Section
Carlo Cariaga
31 Jan 2025
Join this webinar by SPE GTTS on the 3rd of February on how microseismic measurements are evaluated to indicate subsurface processes in geothermal reservoirs.
Registration is open for a webinar organized by the SPE Geothermal Technical Section (GTTS) on “Microseismic Measurements – Ensuring Fracture Model Represents Reality.” The webinar details are as follows:
Date: 3 February 2025
Time: 0900H Houston Time (GMT -6)
Speaker: Jon Mckenna, Geological Engineer at MicroSeismic
Registration: Click here to register
Multi-stage, multi-well completions cause pore-pressures to increase around each stage treated, compound from earlier offset treatment stages, then dissipate as the injected fluid leaks off into the rock formation. Local stress changes illuminated by microseismic focal mechanisms can be used to create maps of high and low stresses which, in turn, can be used to guide a dynamic slurry propagation model and estimate fluid and proppant distribution from the injection. Injected slurry volumes respond to these stress changes which are dependent upon lag time from previously treated stages.
Case studies are presented to demonstrate these time-dependent changes which influence the modeled induced fractures from the stimulation. A geothermal example is presented from Nevada where microseismic events align with local faulting during pumping and increase in intensity during plant shutdown. Focal mechanisms of discrete events are inverted to solve the local stress state
Jonathan McKenna is a geological engineer at MicroSeismic, Inc. His work relies on micro seismic measurements during hydraulic stimulation to quantify dynamic stress changes in the reservoir and develops accurate fracture models to simulate proppant placement and forecast production. He holds a B.S. and a M.S. from the University of Georgia in Geology and Geophysics and a Ph.D. from the Colorado School of Mines in Geological Engineering. He has over 20 years of engineering geology experience, has published over 50 journal articles or abstracts and is the primary inventor of 3 U.S. patents.
Source: SPE Geothermal Technical Section
