Questions in 3-18N-13W and 10-18N-13W Blaine County

I am reaching out in hopes of getting some help on this site. My mother recently left me some mineral rights in Blaine County in the above sections. I am somewhat lost as to how I can find out more information about these areas, especially when it comes to determining net mineral acres and if there may be any current activity going on. I have searched on the OCC site without being able to find much. I am trying to determine how many net mineral acres I have because I have gotten a few offers to purchase them but I would like to know what I even have before making that call. If someone could point in a direction or assist me in any way I would appreciate the help!