Hello,
Always remember that everything on or in a lease is negotiable until you sign it. I recommend that you stay away from the 2 year extension at the end a 3 year lease term. Mayt things can happen in 3 years.
Also as was mentioned, the royalty owner pays nothing of the production expenses. Nothing. get a good royalty percentage and look at old leases for interesting contract clauses.
The following is a sponsored (paid) promotional notice:
If you own minerals in Texas or New Mexico, consider attending the NARO – Texas convention in San Antonio July 18-20, 2018. They have a great agenda, good speakers, and the cost is reasonable. This year also includes a special session for New Mexico mineral owners. The current agenda draft is attached, and a link to their signup and information page is http://www.naro-us.org/event-2824234
Attachment: 2018-04-30%20-%20NARO-TX%20Convention%20Agenda%20%28Hyatt%29%20invite.pdf