# Terminology Question
**URL:** https://www.mineralrightsforum.com/t/terminology-question/6066
**Category:** Eagle Ford Shale
**Created:** [October 23, 2015, 4:17pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066 "2015-10-23T16:17:38Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@Melissa\_Nelson](https://www.mineralrightsforum.com/u/Melissa_Nelson)
#### Post date: [October 23, 2015, 4:17pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/1 "2015-10-23T16:17:38Z")
What does the interest type UMI stand for?
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### Author:  [@Eric\_C\_Camp](https://www.mineralrightsforum.com/u/Eric_C_Camp)
#### Post date: [October 23, 2015, 4:23pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/2 "2015-10-23T16:23:24Z")
Hi Melissa - UMI stands for Unleased Mineral Interest.
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### Author:  [@Charles\_Emery\_Tooke\_III](https://www.mineralrightsforum.com/u/Charles_Emery_Tooke_III)
#### Post date: [October 23, 2015, 4:24pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/3 "2015-10-23T16:24:25Z")
Hi, Melissa -
You didn’t go into what context you ran across “UMI”, but it could be Undivided Mineral Interest.
Hope this helps -
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### Author:  [@Erin\_Moses](https://www.mineralrightsforum.com/u/Erin_Moses)
#### Post date: [October 23, 2015, 4:33pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/4 "2015-10-23T16:33:58Z")
Undivided Mineral Interest - the percentage of minerals owned by the person
and RI is the Royalty Interest - the royalty interest owned (mineral interest x the royalty provided for in the lease)
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### Author:  [@Eric\_C\_Camp](https://www.mineralrightsforum.com/u/Eric_C_Camp)
#### Post date: [October 23, 2015, 4:39pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/5 "2015-10-23T16:39:44Z")
Gotcha. Then in that context, it would stand for Undivided Mineral Interest.
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### Author:  [@Charles\_Emery\_Tooke\_III](https://www.mineralrightsforum.com/u/Charles_Emery_Tooke_III)
#### Post date: [October 23, 2015, 4:57pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/6 "2015-10-23T16:57:09Z")
Your interest is a fraction of the minerals in a tract of land. If you own 10% of the minerals in a 40 acre tract of land, you own 4 acres of minerals in the 40 acre tract, or a 0.1 decimal interest.
It is Undivided, because you own part of the minerals in the entire 40 acre tract. If it were divided, you would own 100% of the minerals in a 4 acre tract.
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### Author:  [@Charles\_Emery\_Tooke\_III](https://www.mineralrightsforum.com/u/Charles_Emery_Tooke_III)
#### Post date: [October 23, 2015, 4:59pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/7 "2015-10-23T16:59:00Z")
My pleasure.
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### Author:  [@Eric\_C\_Camp](https://www.mineralrightsforum.com/u/Eric_C_Camp)
#### Post date: [October 23, 2015, 5:06pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/8 "2015-10-23T17:06:44Z")
Sure. You own an undivided mineral interest when you own part, but not all, of the minerals under a tract.
For example, let’s say your mother has four children and she owned all of the mineral in a 100 acre tract and she left them all to her children. Each of her children would individually own 1/4 (25%) of the minerals in the 100 acre tract. They would each individually own a 1/4 (25%) undivided mineral interest in the 100 acre tract. Such an interest can also be described as “25 net mineral acres” (being 1/4 of 100 acres) and as a 0.25 undivided mineral interest in the 100 acre tract.
If one of the children was to sign an Oil & Gas Lease with a 1/5 royalty, then that sibling would be entitled to 1/20 of the total production from the 100 acre tract (being a 1/5 royalty on the 1/4 undivided mineral interest).
On a Division Order it is important to show the size of the undivided mineral interest because it is part of the calculation of how much a particular person gets from the wells production. Let’s assume the 100 acre tract was part of a 400 acre unit or pool. The sibling that signed the Oil & Gas Lease would be entitled to 1/80 of the production from the pool (100 acres divided by 400 acres times the 1/4 undivided mineral interest times the 1/5 royalty).
Make sense?
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### Author:  [@Buddy\_Cotten](https://www.mineralrightsforum.com/u/Buddy_Cotten)
#### Post date: [October 24, 2015, 4:46am UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/9 "2015-10-24T04:46:51Z")
I have to admit that I have never seen that set of initials before. I would contact the operator to ask them exactly what they meant.
It is likely an undivided mineral interest, but why have it on a division order? That makes no sense, since you are paid on your share of production, not your mineral interest in a unit.
Best,
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### Author:  [@Buddy\_Cotten](https://www.mineralrightsforum.com/u/Buddy_Cotten)
#### Post date: [October 24, 2015, 5:27am UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/10 "2015-10-24T05:27:42Z")
Upon further reflection, I would make sure that the division order is on the state form and all references to the “UMI” are deleted.
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### Author:  [@system](https://www.mineralrightsforum.com/u/system)
#### Post date: [August 14, 2018, 11:28pm UTC](https://www.mineralrightsforum.com/t/terminology-question/6066/11 "2018-08-14T23:28:28Z")