American Oil and Gas Reporter - February 2016 - 61

SpecialReport: Improved Oil Recovery
terpretations. A conformance control strategy also will be essential to positively influence production.
There is great reason to be optimistic about the future of EOR
in tight oil formations such as the Bakken. The results of EERC
laboratory studies suggest significant potential for high rates of
oil mobilization using both CO2 and produced field gas injection
under the right conditions.
The results of the lab studies, combined with rigorous statistical analysis of well production data and associated modeling
efforts, confirm the notion that fluid mobility within the reservoir is controlled by fractures. As more knowledge is gained about
the nature and distribution of fracture networks in the Bakken,
the industry will be in a better position to predict and ultimately influence fluid mobility.
New field tests are necessary to develop a more complete understanding of those conditions. Thoughtful and creatively engineered field tests within a well-characterized geologic setting
will yield the fundamental knowledge needed to take Bakken oil
production to the next level.
❒
Editor's Note: The co-authors acknowledge the support of the
U.S. Department of Energy National Energy Technology Laboratory, the North Dakota Industrial Commission (the Oil & Gas
Research Council and Lignite Energy Council), the North
Dakota Geological Survey, Continental Resources, Marathon Oil
Co., Hess Corp., Exxon-Mobil/XTO, Kinder-Morgan, Schlumberger, Computer Modelling Group, and Baker-Hughes.

JAMES A. SORENSON is a principal geologist at the Energy & Environmental Research Center at the University of
North Dakota. Since 2009, he has conducted a variety of research projects to develop an improved understanding of the
Bakken petroleum system and the potential for carbon dioxide EOR. In 2011, Sorensen conducted an assessment of North
American tight oil resources that was included as a section in
the National Petroleum Council's report to the U.S. secretary
of energy on the potential of North America's abundant oil and
natural gas resources. Sorensen holds a B.S. in geology from
the University of North Dakota.
JOHN A. HAMLING is a principal engineer and oil field operations group lead at the Energy & Environmental Research
Center at the University of North Dakota. He leads a multidisciplinary team of scientists and engineers working to develop and implement monitoring, verification and accounting
concepts for large-scale (more than 1 million tons per year)
CO2 storage and EOR operations at the Bell Creek oil field
in Montana. Prior to joining the EERC, Hamling worked as
a reservoir evaluation engineer at Schlumberger. He holds a
B.S. in mechanical engineering from the University of North
Dakota.

FEBRUARY 2016 61



American Oil and Gas Reporter - February 2016

Table of Contents for the Digital Edition of American Oil and Gas Reporter - February 2016

Contents
American Oil and Gas Reporter - February 2016 - Cover1
American Oil and Gas Reporter - February 2016 - Cover2
American Oil and Gas Reporter - February 2016 - Contents
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American Oil and Gas Reporter - February 2016 - Cover3
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