Just got around 500 acres of minerals in Wagoner County. Worth anything?

I have parcels in the following locations:

16N 14E Section 15 SE/4 1/32 interest

16N 16E Section 25 SW/4 NE/4 and NE/4 SW/4 1/4th interest

16N 15E Section 14 SW/4 NW/4 1/4th interest

16N 15E Section 16 n/2 SE/4 and SW/4 SW/4 1/8th interest

16N 15E Section 9 E/2 NE/4 and E/2 NW/4 1/8th interest

Is there any activity in or around these parcels? How do I go about finding their worth? Etc. Please help.