What would be the best position to look for in Drilling rig jobs with my experiance?

This is in regard to my husband.. so if I sound stupid about something.. just remember I'm a girl.. and know nothing about this stuff!!

My husband is looking for a better paying job. We see to be stuck in a rut with financial issue running wild!

He has 7 years experience in his current job as a well operator for House wells/ irrigation wells.. specializes in submersible pumps. He does all the things your suppose to do.. or know how to do with these types of wells hence the 7 years experience. This is just not very good pay where we are from and we are ready to be out of the rut.

Is there ANY specific jobs he should look at that will better qualify him with his already experience for the drilling rig.. or would he just be better starting out as a rig hand?? Don't know where to start.. and I don't think he has prior experience with drilling rigs for oil so this would be his first.

Sorry if I sound like im a blabbering mess.. just need a little help and a finger to point us in the right direction!!! Thanks in advance!