Texas Natural Resources Code - NAT RES § 86.185. Prohibition Against Gas in Air

No gas from a gas well may be permitted to escape into the air after the expiration of 10 days from the time the gas is encountered in the gas well, or from the time of perforating the casing opposite a gas-bearing zone if casing is set through the zone, whichever is later, but the commission may permit the escape of gas into the air for an additional time if the operator of a well or other facility presents information to show the necessity for the escape; provided that the amount of gas which is flared under that authority is charged to the operator's allowable production. A necessity includes but is not limited to the following situations: