Roger K. Soderberg is a professional geologist with over 30 years of experience in petroleum exploration and evaluation. He has a proven track record of generating drillable prospects and identifying reserves that have resulted in economic drilling opportunities and reserve additions. His expertise includes property acquisitions and divestitures as well as geologic interpretations used in reserve consulting. He has held geological advisory and management roles with major oil and gas companies.

1. ROGER K. SODERBERG, CPG 3640
Edmond, OK 73034 405.420.2063
TX Licensed Professional Geologist #2170
GEOLOGICAL CONSULTANT
Prospect Generation | Property Evaluation | Field Studies
Petroleum Geologist with demonstrated success generating drillable, economic, proved undeveloped
locations. Expertise includes well-documented background in property acquisitions and divestitures as well as
generating geologic interpretations and displays used for reserve additions with industry reserve consulting
companies.
EXPERIENCE
CHESAPEAKE ENERGY CORP., Oklahoma City, OK 2014 – 2015
Geological Advisor, Eastern Gulf Coast
Oversaw generation of liquids rich plays and prospects in Eastern Gulf Coast Business Unit.
• Ensured smooth transition for new employees by effectively mentoring young geoscientists in the
business unit.
• Generated large liquids rich play in Upper Jurassic section of North Louisiana that would provide
economic drilling opportunities for 3 – 4 years.
APACHE CORP., Tulsa, OK 2011 – 2014
Senior Geological Advisor, Anadarko Basin
Oversaw integration and development of significant portion of Cordillera acquisition ($2.85B) covering
northern Roger Mills and Ellis counties, Oklahoma.
• Identified approximately 150 horizontal Tonkawa, 40 horizontal Upper Marmaton, and 60 horizontal
Cleveland development locations in area of responsibility. Increased number of rig lines drilling horizontal
development wells from 2 to 6 in within 15 months.
o Net CAPEX attributable to area of Anadarko basin was approximately $200M for 2014 ($170M
operated and $30M non-operated).

2. • Drilled and or participated in 52 horizontal Tonkawa, Cleveland, or Marmaton wells in 2013. 2014 budget
estimates were 50 – 60 wells. Coordinated all aspects of project, including Expert Witness testimony for
regulatory hearings with the Oklahoma Corporation Commission (OCC), staking and filing, geological
support for reserve determination and attaining management approval.
PETROHAWK ENERGY, Tulsa, OK 2010 – 2011
Chief Geologist, N. La. Conventional Resources
Oversaw evaluation and disposition of all conventional assets in North Louisiana.
• Conducted complete field study of Elm Grove-Caspiana complex.
• Performed petrophysical evaluation, utilizing HDS software on 750 operated wells.
• Identified 17 operated wells with un-booked reserves, resulting in addition of 21 BCFE gross / 7 BCFE net
for 2010 (NSAI).
• Identified 148 non-operated wells with un-booked reserves representing 112 BCFE.
• Implemented horizontal Cotton Valley (Davis) drilling program in Elm Grove field (2011) that resulted in
one horizontal well being drilled.

3. ROGER K. SODERBERG 405.420.2063 PAGE TWO
SAMSON RESOURCES, Tulsa, OK 2004 – 2010
Exploration Advisor 2008 – 2010
Performed technical review of all East Texas Division exploratory Projects.
• Completed basin-wide study for horizontal resource play.
Senior District Geologist, East Texas Division SEUS 2004 – 2008
Generated and developed commercially viable prospects in North Louisiana and South Arkansas.
• Generated and leased approximately 15 prospects (Pettet, Cotton Valley, Bossier, Haynesville and
Smackover) in North Louisiana and Southern Arkansas.
• Drilled 17 wells; 88% success rate (15 / 17).
• Conducted 3 field studies / field redevelopments in area of responsibility.
• Coordinated geological evaluation of 1 property acquisition in North Louisiana.
J. M. HUBER CORP., Houston, TX 1997 – 2004
Senior Staff Geoscientist / Geological Manager
Evaluated offshore acquisitions, performing field studies, and integrated 3-D seismic data with subsurface well
control.
• Drilled 67 wells; 96% success rate (64 / 67).
• Led geological evaluation which identified 2 large producing fields for acquisition.
• Interpreted 3-D seismic data, integrating subsurface well control over 4 fields, resulting in addition of
132.8 BCFE.
ADDITIONAL EXPERIENCE
BATTELLE PANTEX, Amarillo, TX
Environmental Restoration Group Leader / Modeling Section Manager
Oversaw assimilation and modeling of all environmental data collected at Pantex Plant.
• Supervised subcontractors collecting subsurface hydrogeologic data.
SEAGULL MIDCON, INC., Amarillo, TX
Exploration Manager
Managed the development drilling program covering 1.3K producing properties.

4. • Achieved 90% success rate on 26 / 29 wells drilled.
• Added 34.4 BCFE of proved reserves (Degolyer and MacNaughton) while producing 17 BCFE, utilizing a
$10MM capital budget.
• Managed technical staff of 11 (geologists, geophysicists, and support staff).
MESA OP. LIMITED PARTNERSHIP, Amarillo, TX
Senior Geologist-Midcontinent Coordinator / Supervisor, Geology
Added value to producing properties by identifying economically viable drilling locations and behind pipe pay.
• Drilled or recommended for participation 32 wells – 28 successful completions, achieving 88% success
rate.
• Performed 10 field studies in Midcontinent yielding over 150 PUD locations on Mesa acreage.
• Led geological evaluation team for successful acquisition of Tenneco Midcontinent (700 BCF), identifying
additional 100 BCFE of undeveloped reserves.

5. ROGER K. SODERBERG 405.420.2063 PAGE THREE
MESA PETROLEUM CO., Houston, TX
Senior Geologist / District Geologist
Identified new exploratory plays in South and East Texas.
• Drilled or recommended for participation 10 wells – 10 successful completions; 100% success rate (South
Texas).
• Performed exploratory prospect generation in East Texas and onshore Texas Gulf Coast.
CHEVRON U.S.A., INC.
Exploration Geologist, New Orleans, LA
Generated new prospects and extended fields in Tuscaloosa trend of South Louisiana and Cotton Valley
trend of East Texas.
• Selected to initiate an Economic Evaluations program for geologists at Chevron.
Development Geologist, Lafayette, LA
Performed wellsite evaluations for all exploratory and development wells drilled in the Eastern Region.
• Conducted field studies for 4 offshore and 1 onshore field, integrating subsurface well data with seismic
data.
• Drilled 12 wells- – 12 wells were economic completions; a 100% success rate.
EDUCATION
− Master of Science (MS), Geology / Geophysics, University of Kentucky, Lexington, KY
− Bachelor of Science (BS), Geology, University of Kentucky, Lexington, KY
AWARDS
− Co-recipient, A. I. Levorson Award, Best Paper Award at AAPG Section Meeting
PUBLICATIONS
− Principal Author, Bouger Gravity Map of Kentucky: Western Sheet
− Principal Author, Geophysical Evidence of Deep Basin in Western Kentucky: AAPG Vol. 65-2

6. ADDITIONAL QUALIFICATIONS
− Extensive experience utilizing PETRA, Geographix, SMT, and Landmark mapping packages
− 12 years of 2-D and 3-D seismic interpretation experience
− Extensive log analysis experience, training and working with Dr. George Asquith

7. ADDITIONAL QUALIFICATIONS
− Extensive experience utilizing PETRA, Geographix, SMT, and Landmark mapping packages
− 12 years of 2-D and 3-D seismic interpretation experience
− Extensive log analysis experience, training and working with Dr. George Asquith