Colorado oil and gas operator lookup.

How do I look up an oil and gas operator in Colorado?

Type the operator name from your check stub or division order above, or search the ECMC operator number. Colorado's active operator list is short compared to other states, a few hundred companies, so most searches resolve in one or two words. DJ Basin owners will find the major names here quickly.

What does Colorado ECMC publish about each operator?

For each operator: the ECMC operator number, company name, and mailing address. Colorado does not publish operator phone numbers or contact names in this file; the ECMC's own name and address search is the place to go for more, or ask us and we will look it up.

Why are there only a few hundred Colorado operators?

Because this is the ECMC's active operator list: companies currently approved to operate wells in Colorado. The state has consolidated heavily, and inactive or historical operators are not on it. If the name on your check stub is not here, the well has likely changed hands, and the ECMC's well records will show who runs it now.

The operator on my Colorado check stub is gone. What now?

Wells change hands constantly, and the company paying today may be several sales removed from the name you remember. Search the old name here with the active filter turned off, then check the well itself in Colorado ECMC records to see who operates it now. If the trail goes cold, or you think royalties are sitting in suspense under a relative's name, our guide to finding unclaimed royalties covers where that money hides, and you can ask us to trace it free.

Source: Colorado Energy and Carbon Management Commission active operator list, a public record. Berlin refreshes this copy weekly; last updated 2026-08-14, covering 248 Colorado operators. We reformat the agency's data for readability and do not alter it.