Abstract: Seismic monitoring of microseismic events induced in oil or gas reservoirs is known as microseismic monitoring. The microseismic monitoring is used to understand process of hydraulic fracturing, one of the reservoir stimulation techniques. Microseismic monitoring of hydraulic fracturing has developed from stimulations in geothermal energy in so called hot dry rocks. The early interpretations were limited by available instrumentation both in geothermal as well as oil and gas industry. This talk will guide you through the early developments all the way to the state of the art understanding of hydraulic fracturing stimulation in shales. I will show how the opinion and interpretations evolved as the instrumentation and processing improved through time as this development may be common for many other newly emerging subjects. I will end my talk with presentation of a new geomechanical model of bedding plane slippage induced by hydraulic fractures in shale reservoirs to explain seismicity observed in hydraulic fracturing of a shale gas plays in the North America.
Bio: Leo Eisner was born in Prague in 1970. He spent six years as a Senior Research Scientist with Cambridge Schlumberger Research where he filed five patents and issued numerous publications. He joined MicroSeismic, Inc. in 2008 and was promoted to chief Geophysicist in 2009. In 2010 he has accepted honorary position of Purkyne Fellow at the Academy of Sciences of the Czech Republic in Prague. He is founder and since 2015 full time president of seismic service company Seimik s.r.o. He is a Continuous Education lecturer for SEG on microseismicity. His papers and extended abstracts cover a broad range of subjects, including the seismic ray method, finite-difference methods, seismological investigations of local and regional earthquakes and microearthquakes induced by hydraulic fracturing, etc.