Where to search for wells I may not know about

We inherited mineral rights in 17 counties OK, usually a few tracts in each county. We are reading up and learning all about how to handle these and transferring over the KNOWN leases that have active wells with several of them, known since Jan 2019. We only know this through royalty checks that had been coming in. Some others may still have active leases - we have thick files to sort through as it seems all leases and other records were kept.
*Where can I find current active leases for each property? *I was advised there may be wells we don’t know about at this point and we need to find out, that may have started during the year of probate. Would the companies not get notified of new ownership and where to send division orders/royalties? Do we need to also contact all leasing companies to transfer the leases? *Where to even search for wells we don’t know about?

Thank you!