Can royalties from the same Section and the same company be set at different levels for each well?

Hello Everyone,

I am new to this whole thing of mineral rights. My grandfather gave me his rights in 1983.

I have partial rights for the NE/4 of 4-19N-3W and Kirkpatrick Oil Company has 4 wells in this section. I am getting 3/16 for the one well that is on my property and 1/8 for the other 3 wells in the south end of the Section. Does this sound right? (I have not signed the Division Orders yet)

I was told that this was based on the 1940 Warranty Deed that explains that the 1/4 royalty rights kept by my Great Grandmother is:

"...and assigns forever an undivided one-fourth interest in and to the royalty (the ordinary one-eighth ordinarily left the grantor in oil and gas leases being the royalty above referred to) produced under any oil and gas lease now on said premises..."

I was told that the "Title Review" document stated that this is being interpreted "literally" meaning that It was agree back in 1940 that the fraction would be 1/8 forever. Does this sound right? (I have not signed the Division Orders yet)

Looking towards the future with you,

Rob