In this chapter:
(1) “Commission” means the Railroad Commission of Texas.
(2) “Field” means an accumulation of oil or gas or both that is not in natural pressure communication or otherwise connected to any other accumulation of oil or gas or both.
(3) “New field” means a field that has been certified by the commission as a previously unrecognized and unidentified field.
(4) “Discovery well” means an oil or gas well by which a new field discovery is made.
(5) “Spud” means the initial penetration of the earth by the drill bit for an oil or gas well under proper permit from the commission.
(6) “Completed” means the well has been equipped to produce hydrocarbons and the commission has been notified as required by commission rules.