So, has the well been completed “into the tanks/pipeline”? If so, generally look toward 90-120 days after end of month from 1st date of production. State of Texas statutes require payment no less frequent than annually, but you may have a clause in your lease to govern this more strictly, or at least you should! Is all your acreage in the unit, or is it a “lease” well. If “all in” a unit well, or a “lease well” with no Pugh Clause to enforce, then in either case you’ll have no acreage to get a “re-up” lease. If any acreage/depths are available upon expiration of the encumbent lease, those terms are negotiable at that time.