Primary Job Title CEO Primary Organization 
Tall City Exploration
Location Midland, Texas, United States Regions Southern US Gender Male
LinkedIn View on LinkedIn
Michael Oestmann has over 30 years of experience in all aspects of the oil and gas business, with a particular focus on company start-ups, exploration, asset management and development. Mr. Oestmann has experience in numerous geologic basins with primary focus in the Permian Basin and has a consistent record of increasing production in existing
fields, exploration success and company development and sale. Mr. Oestmann began his career with Exxon Co. USA in 1982 after graduating from Rice University with a bachelor’s degree in geology with a geophysics option. He worked 15 years with Exxon, 7 years with Titan/Pure Resources/Unocal, 2 years with Celero/Whiting, and 1 year with Lothian Oil in various exploration, development and senior management positions. In 2007 he co-founded Piedra Resources with private equity partners. Piedra sold its assets to a Berry Petroleum in 2011 for over $120 million. Mr. Oestmann began Tall City Exploration in May of 2012 with a $200 Million equity commitment from Denham Capital. He is also President of LJean Resources, LLC, an oil and gas and real estate company, and has co-founded and advises several oil field service, production and realty companies. He is a 30 year member of the AAPG and SEG, member of the PBGS (having served as President) WTGS and SPE. He is a certified geologist with the Texas Board of Professional Geoscientists and the DPA of the AAPG, and serves as an elder at Westway Church of Christ. He and Cathy, his wife of 28 years, live in Midland, Texas.
