the potential for induced seismicity from oil and gas ... · injection wells and unconventional...
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GWPC Annual Forum
September 13, 2016
The Potential for Induced Seismicity
from Oil and Gas Wastewater
Injection Wells and Unconventional
Well Development in Pennsylvania
Lee Geologic
717.991.5620
Lee Geologic
717.991.5620
Joseph J. Lee, Jr., P.G
Geology & geologic structures
Areas of oil & gas development
Earthquake Catalogue
Oil and gas wastewater disposal by deep well injection
Areas of higher potential
Recent events
Pennsylvania Assessment
Once Upon a Time in 1859
www.dcnr.state.pa.us
www.dcnr.state.pa.us
www.dcnr.state.pa.us
Distribution of Active Class IID Wells
UIC Program in Pennsylvania
USGS Earth Quake Archive
01/01/1900 to 02/23/2016, M 1.0 to 7.0ANSS Comprehensive Catalog
Long Term Waste Management Planning
• Oil and Gas Program has utilized existing produced fluid/flowback data trends to develop a predictive model for waste generation in association with the Marcellus shale play: one mechanism for disposal of this waste is through deep well injection
Emerging Issues
Northwest PA Earthquakes & UIC Wells
Southwest PA Earthquakes & UIC Wells
Oil & Gas Management Reports Page
Northwest PA Earthquakes & UIC Wells
3/2014 Earthquakes , Poland Twp, OH
R. J. Skoumal, M. R. Brudzinski, and B. S. Currie, 2015
O4/25 – 26/16 Earthquakes Lawrence Cnty, PA
North Beaver ND Wells 7H, 9H, 10H, 12H
March to April Hydraulic
Fracturing
•North Beaver ND 7H & 9H jobs 03/31 – 4/16
• Base fluid volumes of 18.5M & 15M gallons.
•North Beaver ND 10H & 12H jobs 04/16 – 4/25
•Base fluid volumes of 13.2M & 15.1M gallons.
• Total vertical depths of 8,000 feet
•Basement 11,000 feet
O3/14 – 09/16 Earthquakes Lawrence Cnty, PA
RESULTS
•Low potential for induced seismicity from Class II
disposal well operations as presently occurring
• Increased interest interest in expansion of the number
of Class II wells for disposal in the future in some areas
•Increase monitoring in the state and improve
communication
•Better deep structure information is needed
•Assess potential in areas of Utica development in higher
stress zones
Lee Geologic
717.991.5620
Joseph J. Lee, Jr., P.G