Tex. Nat. Res. Code § 52.181

The owner of a permit or combination of permits may relinquish to the state a permit or combination of permits or any whole survey or whole tract included in a permit at any time before obtaining a lease therefor by having such relinquishment recorded in the counties in which the land or part thereof is situated, and by filing it in the land office within 60 days after its execution, with a filing fee set by the commissioner in an amount not less than $1.