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Oil/Gas/Fractional equivalent of decimal interest?


Mr. Scott,
  I inherited  20 producing mineral acres from my father that has passed. The well was drilled in 1982. My decimal interest is .0058593500. Can you help me put that into a fraction percent. It is in Custer Co . Oklahoma and I would think its a 640 spacing?

Assuming it's a 1/8 royalty (many old wells are) and a 640-spacing, your decimal indicates they are paying you on 30 acres. With a 3/16 royalty it would be 20 acres though.

Multiply the decimal by the spacing unit size, then divide by the royalty to get these acreage figures.

To express the decimal as a percentage you'd simply multiply it by 100, resulting in .585935%. The fractional equivalent would be 117187/20000000.

Hope this helps you out.
Frederick M. "Mick" Scott CMM, RPL
The Mineral Hub  


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Frederick M. Scott


Oil and gas leasing, lease negotiations, how to best deal with the oil and gas companies or their representatives, buying/selling mineral rights, forced-pooling, correlative rights, deeds and conveyances, and "post-production" costs. I am most experienced with Oklahoma properties and laws, but am able to answer questions concerning other oil and gas producing states in many cases.


I am a Certified Professional Mineral Manager (CMM) certified by the National Association of Royalty Owners (NARO) in Tulsa, OK. I am also a Registered Professional Landman (RPL) with the American Association of Professional Landmen (AAPL). I have managed my family's oil and gas properties in Oklahoma for over 10 years and have dealt with many landmen, title analysts, attorneys and other oil and gas professionals in the process. I have written several articles which have appeared in various oil and gas industry magazines and newsletters. I have negotiated and drafted leases, prepared deeds, affidavits, and other legal instruments relating to my own minerals, as well as performed title, legal research, and curative work for same. I have acquired a good deal of knowledge on the subjects of oil and gas law, mineral appraisal, and landwork over the past ten years, and also worked as a professional landman and lease buyer for a time. I've seen the business from "both sides" and therefore feel confident I can help out most of the folks who ask questions in this forum.

National Association of Royalty Owners (NARO); American Association of Professional Landmen (AAPL)

National Association of Royalty Owners "Action Report" (ROAR); NADOA Magazine, The Mineral Hub, Landman Magazine, and several royalty owner association group's newsletters.

Certified Mineral Manager (CMM), Registered Professional Landman (RPL)

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