energy & environmental research center (eerc) · 2018. 10. 8. · relevant eerc experience. 5...
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Energy & Environmental Research Center (EERC)
PRODUCED GAS REINJECTION
2018 North Dakota Petroleum Council Annual Meeting
Fargo, North Dakota
Beth Kurz
Assistant Director for Integrated Analytical Solutions
EERC
© 2018 University of North Dakota Energy & Environmental Research Center.
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THE CONCEPT
• Can we temporarily store excess
produced gas in the subsurface to
help achieve gas capture
requirements?
• With NDIC funding, the EERC just
kicked off a 3-month study to evaluate
and simulate produced gas injection
into the subsurface.
– Focused examination of the Broom
Creek Formation (Minnelusa
Group)Source: Bluemle et al.,
1986; Murphy et al.,
2009.
Characterization, modeling,
and simulation of multiple
subsurface targets focused on:
• CO2 storage in brine
formations.
• CO2-based EOR in
conventional and
unconventional formations.
• Rich gas EOR in the Bakken.
• Saltwater disposal in the
Inyan Kara Formation
(Dakota Group).
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RELEVANT EERC
EXPERIENCE
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PLANNED SCOPE OF WORK
• Assess produced gas compositions, gathering options, compression requirements
and costs.
• Simulation of produced gas injection into the Broom Creek Formation to estimate:
– Site-specific compression needs.
– Injection rate.
– Storage potential.
– Plume extent and migration over time.
– Future recovery efficiency.
• High-level assessment of alternate targets for produced gas injection (e.g., carbonate
reef structures, conventional and unconventional oil reservoirs).
• Economic and regulatory assessment.
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TYPICAL SUBSURFACE TARGETS FOR NATURAL GAS
STORAGE
Source: API; http://www.energyinfrastructure.org/energy-101/natural-gas-storage
80% 10% 10%
AquifersSalt FormationsDepleted Fields
Source: EIA - Natural Gas Annual Respondent Query System (EIA-191 Data through 2016)
U.S UNDERGROUND NATURAL GAS STORAGE FACILITY, BY TYPE (DECEMBER 2016)
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POTENTIAL BENEFITS AND OPPORTUNITIES
• Subsurface injection of flared
gas could be a mechanism to
meet gas capture requirements.
– Could facilitate sustained
growth in oil production.
– May facilitate one or more of
the Governor’s oil and gas
industry challenges.
• Establishing gas storage
infrastructure could facilitate
petrochemical investment.
• Can state lands play a role?
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ANTICIPATED CHALLENGES
• Compression requirements,
equipment availability, and
associated costs.
• Temporal nature of gas
production and/or gas
composition.
• Regulatory clarity.
• Storage scale – DSU basis or at
intermediate gas-gathering
locations?
• Recovery efficiencies?
Project duration is 3 months, with a final report due December 31, 2018.
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STAY TUNED!
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CONTACT INFORMATION
Energy & Environmental Research Center
University of North Dakota
15 North 23rd Street, Stop 9018
Grand Forks, ND 58202-9018
www.undeerc.org
701.777.5050
Beth Kurz
Assistant Director for Integrated Analytical
Solutions