My buddy just had a 2900' hole completed on his place. The sucker rods are in and they moved a pumpjack in this past week. When we checked out Saturday; the motor is a single cylinder NG unit fed off the wellhead...a Jumping Johnny.
Pop...pop...pop...pop..................BANG...pop...pop...
There used to be one of those across the valley from my grandparents' house when I was little. You could hear it echo through the woods. About once per second, a loud clap like two flat boards slapping together. Ah, memories.