Feb 09, 2024

Mark Ulmer

  • Petroleum Engineer
  • Highlands Ranch, CO
Full time Other

Personal Summary

I am a highly experienced and skilled Petroleum Engineer with a strong background in operations, project management, and consulting. With an MBA, MS, and PE licenses, I bring a comprehensive understanding of the oil and gas industry and a proven track record of success. Throughout my career, I have excelled in managing all aspects of operations, including drilling, completions, production, and facilities. I have a passion for problem-solving and have consistently achieved impressive results, such as significantly increasing production while reducing costs. With my expertise and leadership abilities, I am confident in my ability to make a valuable contribution to any organization in the petroleum engineering field.


  • Extensive knowledge of drilling, completions, and production operations
  • Strong background in reservoir engineering and analysis
  • Proficient in budgeting, financial analysis, and reporting
  • Excellent problem-solving and decision-making abilities
  • Effective leadership and team management skills
  • Expertise in regulatory compliance and permitting

Licenses and certifications

  • Professional Engineer - Petroleum, State of Colorado (#40830)
  • Professional Engineer - Petroleum, State of North Dakota (#28732)
  • Professional Engineer - Petroleum, State of Texas (#139445)
  • Professional Engineer - Petroleum, State of Wyoming (#18194)
  • SPE Certified Petroleum Engineer

Work Experience

Mar 2016 - Present Samson Oil & Gas Limited

Responsible for every aspect of Samson’s operations including drilling, completions, production, facilities, pipelines, marketing, reservoir engineering, and more. Managed all day-to-day decisions and problem-solving, state and federal reporting, budgeting, and reserves reporting. Achieved significant operational highlights, including increasing production to over 1,500 bopd while reducing lifting costs and LOE.

COO and Partner
Aug 2013 - Present Versa Energy, LLC

Founded and managed an Operating company, overseeing accounting, administration, budgeting, engineering, insurance, mergers and acquisitions, and field operations. Utilized cash flows from non-op assets to drive the company's success.

President and Owner
Mar 2007 - Present Ulmer Energy, LLC

Handled all business aspects as a bonded Operator and a Non-Operating Working Interest Owner with assets in Montana and North Dakota. Managed accounting, business development, engineering, geology, marketing, and all operations.


Juris Doctor
Vermont Law School
Master of Science - Finance
University of Colorado
Master of Business Administration
University of Colorado
Certificate of Entrepreneurial Studies
University of Colorado
Bachelor of Science - Mechanical Engineering
Colorado School of Mines
Bachelor of Science - Petroleum Engineering
Colorado School of Mines