Environmental Monitoring

ESG Introduces New Seismic Monitoring System

October 4, 2012

The hybrid combines near-surface microseismic arrays with a network of vertical downhole toolstrings, providing an integrated system to assess large and small magnitude seismicity.

KINGSTON, Ontario /PRNewswire/ -- ESG Solutions, an industry leader in microseismic technology and services, is pleased to introduce its new hybrid downhole/near-surface microseismic solution. Recent concerns surrounding the potential of oil and gas operations to induce larger magnitude events has highlighted a need to accurately detect seismicity greater than M0 in addition to small scale microseismic activity. ESG's patent-pending hybrid acquisition configuration deploys near-surface, or shallow-buried, microseismic arrays to complement downhole acquisition, providing a fully integrated solution to assess large and small magnitude seismicity in one comprehensive system.

"Seismic networks deployed to monitor production-related activity in reservoirs are designed to detect and analyze small-scale micro-earthquakes," said Dr. Ted Urbancic, EVP of Global Energy Services at ESG. "In particular, hydraulic fracturing and cyclic steam injection activities generate thousands of micro-earthquakes with magnitudes in the range of –M4 to M0. However, the geophones typically used in these networks cannot be optimized to record the lower frequency signals and longer window lengths associated with larger magnitude events, ranging from M0 to M4."

ESG's new Hybrid solution combines near-surface, or shallow-buried, microseismic arrays with a network of vertical downhole toolstrings. Not only does this configuration increase the physical field of coverage but also the use of accelerometers as near-surface sensors more accurately measures large magnitude events, widening the range of magnitudes that can be successfully evaluated with a single microseismic system. "This configuration provides for truly broadband microseismic acquisition, spanning signals from –4 to 4 in magnitude," says Urbancic.

ESG's Hybrid downhole/near-surface solution has been successfully applied to hydraulic fracturing operations throughout North America.

For more information, please visit the company's Web site.

About ESG Solutions
Founded in 1993, ESG Solutions (Engineering Seismology Group, or ESG) is a leading provider of microseismic instrumentation and data acquisition, analysis, and interpretation services for the oil and gas, mining, and geotechnical industries. As an independent provider of innovative microseismic solutions, ESG helps operators improve safety, optimize production, reduce costs, and mitigate risk associated with hydraulic fracturing, thermal enhanced oil recovery, underground and open-pit mining, natural gas and waste storage, carbon sequestration, and geotechnical applications. ESG is headquartered in Kingston (Canada), with offices in Calgary, Houston, Denver, Dubai, Amsterdam, Changsha, and Beijing.

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