Marlan W. Downey, Founder

team-marlan-downeyMarlan is former President of the AAPG, an elected Fellow of the American Associates for the Advancement of Science, a Senior Fellow of the Institute for the study of Earth and Man at SMU, and a fellow of the Geological Society of the United Kingdom. Marlan was knighted by President Biya of Cameroon for his service to that country. He has been honored by the world’s largest geological society as “A Living Legend in the Oil and Gas Business” and has been a distinguished lecturer for several geosciences organizations. Marlan had a thirty-year career with Shell Oil in management and research, retiring as President of Shell (Pecten) International in 1987. After a brief retirement during which he founded Roxanna Oil Company, he joined ARCO, serving as President of ARCO International for seven years. After retiring from ARCO, he became Bartell Professor of Geoscience at the University of Oklahoma, and Chief Scientist at the Sarkeys Energy Center.

In 2000, he organized and chaired the Presidential Energy Policy Symposium in Washington, DC. In 2002, he received the R.H. Dott award for best geologic publication, and in 2003 he received the Hedberg Medal for outstanding scientific achievements. In 2005, he was honored as a “Legendary Oil Finder” by the Petroleum History Foundation. In 2008, Marlan received the Sidney Powers Memorial Award, the highest honor bestowed by the AAPG, for his outstanding contributions to oil and gas exploration.

Marlan has led exploration teams in 62 countries, has an extraordinary record of consistent successes in his sixty-year career.

Marlan W. Downey passed away on Memorial day May 29th, 2017.  He is survived by his sister Carol Beth, wife Marea Downey and his 6 children; 4 of whom are still very active at Roxanna.

Julie Garvin, President

Julie Garvin joined Roxanna Oil Company as President in July 2005, after a 23 year career with Marathon Oil Company. While at Marathon, Julie held the position of Exploration Manager for both Shelf and Deepwater Gulf of Mexico, where her and her teams were credited with the discovery of over 500 MMBO in new frontier exploration plays. Julie was later named Geoscience Advisor, Worldwide Exploration where she was responsible for providing strategic direction for Marathon’s U.S. and International exploration efforts.

Since joining Roxanna, Julie has been responsible for the generation and execution of major exploration projects for Roxanna’s industry partners and clients. To date, Roxanna has held both working and royalty interests in numerous plays in multiple basins in the US and Europe, culminating in over 1,000,000 gross acres.

Julie has been an invited speaker at industry forums, and has co-authored several papers. She serves on the Advisory Council for the University of Texas Jackson School of Geology, where she received a BS degree with honors in Geology in 1983.  She serves as an Independent Director of Foundation Energy Company and is Chairman of the Board of Roxanna Oil Company.



Paul Gucwa, Executive Vice President

paul-gucwa-headshot-optAs Executive Vice President Paul works with the Roxanna Oil team to manage the Company’s working and royalty interest properties and develop new projects to further grow the company.  He has broad geologic exposure, especially to North American basins and petroleum systems.  His area of expertise is structural geology/tectonics.

Paul has 40 years’ experience as a geoscientist and in technical and business management roles developing exploration and production projects throughout North America.  Paul began his career in 1974 and has served in a variety of positions, including Research Geologist at Marathon, Chief Geologist at BP and Manager of US Exploration at Marathon.  During Paul’s tenure at Marathon the domestic exploration program added in excess of 300 million net barrels of oil equivalent.  Paul retired from Marathon in 2000 and formed Texas 3 Star Energy Investment, LLC., a  privately held oil and gas exploration and consulting company focused on North America.  In 2005 he joined the Tetra Technologies oil and gas unit, Maritech Resources, where he contributed the geoscience work for the successful redevelopment of Timbalier Bay Field.  In June 2011 Paul joined Bahamas Petroleum Company, Plc, as Chief Operating Officer and remained in that role until joining Roxanna Oil in June of 2013

Paul received his undergraduate degree from Franklin and Marshall College, and his master’s and doctorate from The University of Texas at Austin.  He is also a graduate of the Wharton Advanced Management Program.

Paul serves as a member of the Advisory Council of the Jackson School of Geoscience at the University of Texas.

Nick Downey, Operations Manager

Nick DowneyNick Downey studied geology at Southern Methodist University in Dallas and completed their post-graduate level course, “Business of Petroleum Geology.”  He then moved into business where he completed “Masters in Entrepreneurship”; Nick then started several successful businesses.  He continued to take on Oil and Gas Industry courses including ESRI:GIS, Division Orders, Shale Development and Shale Fracturing Fundamentals, Petroleum Geology, PHDWin to name a few with several other technical web classes including Petrophysics of Carbonates and Heterogeneity in Carbonate Reservoirs.

Nick joined Roxanna Oil Company in February of 2013 as Administrations Manager where his business and geological talents contribute importantly to Roxanna’s success.  He currently manages the operating wing of Roxanna as well as assisting in the project generation, marketing, land and legal documents, through well planning, drilling, completions and production management… Nick is fortunate to work from concept to commerciality and enjoys learning from the best and brightest everyday here at Roxanna.

Nick is the youngest of Marlan Downey’s (company founder) 6 children.  He is a member of the Houston Geological Society, the Society of Petroleum Engineers, the American Association of Petroleum Geologist since 2007, the Houston and Dallas section of the Young Professionals Network, and a Texas Notary Public since 2015.  He is the President of Roxstar Enterprises, LLC and the owner of One Hit Quit fight wear.

Alex Downey, Asset Manager

Alex Downey

Alex began his career with Roxanna as a consulting GIS specialist in 2006, and joined full time in 2011. He began his training in 2005 while attending Southern Methodist University. He continued this specialized training in GIS at Brookhaven College.  He has completed Oil and Gas Industry courses in ESRI:GIS, Division Orders, Shale Development and Shale Fracturing Fundamentals, Petroleum Geology, PHDWin and several other technical web classes including Petrophysics of Carbonates and Heterogeneity in Carbonate Reservoirs, as well as SMU’s post-graduate level course, “Business of Petroleum Geology”, where Alex received special commendation.

In 2007, Alex formed Petroleum GIS, a company specializing in digitizing oil and gas data, creating custom base maps, managing large databases, and analyzing geospatial data for use by related industry professionals. He has been involved in major GIS mapping projects in Wyoming, Idaho, Utah, Texas, New York, Pennsylvania, West Virginia, Oklahoma, Nevada, and Illinois.  Alex currently works at Roxanna Oil as their Operations Manager.

Avery Arendale, Geologist


Avery graduated Cum Laude from Texas Tech University (TTU) in Lubbock, Texas with a B.S. in Geosciences and a Minor in Petroleum Geology in the spring of 2011. She was a recipient of the faculty nominated, merit-based Energy Cup Scholarship from the Geosciences Department at TTU. Avery completed two geology and industry business internships upon graduation with both Pedernales Energy LLC and Walter Oil and Gas Company in Houston, Texas. She had the privilege to work on projects onshore in south Texas marker Lobo sands, the Marietta and Ardmore Basins of Oklahoma in the Woodford shale and Hunton limestone, the Williston Basin of Montana, and offshore in the Gulf of Mexico, West Delta Louisiana. Her senior thesis project entitled ‘Constraining The Onset of Cretaceous Peraluminous Magmatism in The Ruby Mountains, Nevada’ was chosen to be presented at the Joint Geoscience Society of America (GSA) Section meeting – Rocky Mountain and Cordilleran May 2011.

Avery began her Masters of Science at Rice University in Houston, Texas in Geosciences with a focus in Petroleum Geology in Fall of 2012. Her graduate geoscience internship and thesis work was completed at Hess Corporation with the Global New Business Development Team in the summer of 2013 working in the Marcellus and Utica/Point Pleasant Appalachian shales. She analyzed porosity and the change in porosity in these shales with respect to thermal maturity utilizing petrophysical and pyrolysis core data. Her thesis was entitled ‘Porosity Change as a Function of Thermal Maturity in The Ordovician Point Pleasant Shale, Ohio, USA.’ Avery graduated with her Masters in May of 2014 and began working at Roxanna working with Julie on the Las Animas Arch of southeastern Colorado