Overriding royalty interests

My family has overriding royalty rights in Brazos county. I have been reading the details and I don’t know which description is key. My documents describe the properties by abstract numbers and also tracts. What is the difference and which one should I use when referring to this land in Brazos county? I am just trying to find out if there is any new activity.

Abstract numbers should pin it down enough for someone to check permit activity there.