You can look up your wells on the North Dakota Oil and Gas Division site. https://www.dmr.nd.gov/oilgas/findwellsvw.asp Your section is part of a larger unit that goes into section 8 as well. Oil companies frequently change names. Equinor is the new name for StatOil. The spacing is for 4 sections, so do you have acreage in 6 or 7? The Little Muddy wells belong to them. They are operated by Nine Point. They are spudded in section 6 & 8. Your original lease may have been with one company, but when the wells were unitized, you may have been included in a larger unit. There are a lot of wells in 5 & 8, so see what the check stub says with regards to the other wells. Sometimes, there are catch up royalties when they do additional title work.