Huge question there. First of all, don’t sell until you understand the value of what you have. If you just inherited, make sure that you have filed the probate in every county district clerk’s office where you have minerals. They need your address and a description of the minerals. Obviously, the buyers have tracked you down somehow, so that might already be done.
Then get informed about each of your counties and what is going on in them. Your list includes the SCOOP, STACK and MERGE plays. Read everything in the forum on those counties. Look up in the search (magnifying glass upper right) to see if your section-township-ranges have been mentioned.
Then look up the investor presentations of the operators in your area. You might start with Continental Resources, Newfield (just bought by Encana), Marathon, Gulfport, Devon, Cimarex to name a few.
Then come back and ask particular questions in each county. Depending upon where you are, you need to find out if you have royalties coming to you. Also, you want to ask the executor of the estate what the minerals were valued at at the time of death. Very important! If you sell and don’t have that number, you will be taxed for capital gains on the whole amount. If you have the step up value, then you will be taxed less. But I encourage you NOT to sell until you understand your situation. The minerals will still be there. You may make more in the long run by hanging onto them and becoming an informed mineral owner. It takes a bit of time, but is quite do-able. Even “not much” minerals can provide an income stream for a long time. Most offers are lowball, so if you eventually decide to sell, you need to know what to ask for.