The receivership makes the job of getting paid significantly harder. It will also significantly decrease the marketability of your interest until it is out of the receivership. What likely happened was that an old relative owned these minerals. He/she died, likely out of state, and decades passed without much oil and gas activity, so it was all probably forgotten by various family members. Now, when the oil company is combing through the deed records to find who owns the minerals, the trail stops at the old relative. They “should” have made a diligent search, but what is diligent may be a little subjective. After all, Patch found you…why couldn’t they?
At any rate, if their search was not fruitful, they can petition a court to set up a receivership. The receiver acts on behalf of the missing owners until they are found. Royalties are paid to the receiver (or might just be suspended altogether), who holds them until the missing owners are found.
If the interest was not in receivership, but just being held in suspense, getting put in pay would be a chore, but not terribly difficult. You would need to establish how you are entitled to the interest as heir or beneficiary of whoever in the family once owned them. This would mean obtaining Affidavits of Heirship for family members who died without a Will, or obtaining probate proceedings for family who died with a Will that was probated.
For something in receivership, the process is more difficult. You will need all the same information, but you will also have to petition the court to have your claim recognized and out of receivership. Which also means that you might need to hire a lawyer. The million (or hundred) dollar question is…are your minerals worth more than what it will cost to do all this? Impossible to know unless you already have an idea what you own. I suppose you do have Patch’s offer as a starting point, but who knows how correct their math is, or if the number offered is indicative of what you’re currently owed, From what you have described, it sounds like it would be best for all your family to get together on this though, since your portion might be much smaller than the uncles, and alone, perhaps not worth the legal cost. If y’all decide you want legal help, there are sponsors on this forum who can help, and I recommend one of the attorneys, based in Austin. Sharp guy. There are also many other qualified lawyers in Texas who could help with the receivership, and most will show up with some Google searching.