Hohn Engineering, PLLC

Billings, MT

Professional Organizations:

Society of Petroleum Engineers   SPE

Society of Petroleum Evaluation Engineers  SPEE

American Association of Petroleum Geologists


SEC Reserve Definitions

SPE/SPEE/AAPG/WPC Reserve Definitions


State Regulatory Agencies:

Montana Board of Oil and Gas Conservation

North Dakota Industrial Commission

South Dakota Department of Environment and Natural Resources

Wyoming Oil and Gas Conservation Commission

Colorado Oi and Gas Conservation Commission

Utah Division of Oil, Gas and Mining

Federal Regulatory Agencies:

BLM – Montana and Dakotas

BLM Wyoming

BLM Colorado

BLM Utah


Academic institutions:

Montana Tech

Colorado School of Mines

Rocky Mountain College


Our Community Activities:

Special K Ranch

Billings Symphony

Stillwater County Economic Development


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Why Choose Hohn Engineering?

We tell clients what they need to hear, not necessarily what they want to hear, because that is what professionals do.


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Why Choose Hohn Engineering?