I checked DrillingInfo as to recent lease filings.
Attached PDF shows Duval Co lease filings (purple dots).
Not much in Jim Wells Co - three areas in northern part of the county stretching from Orange Grove to San Diego.
Companies filing include Stalker, Nye, McGovern and several groups I have never heard of (brokers?)
Mark, thank you for taking the time to do this. I hope to get rid of those inherited minerals before I die. LOL.