Abstract: Composite plug drill out. At least some example embodiments are methods including: drilling out a first composite plug which creates plug parts and opens a first segment having a first set of perforations through the casing; pumping diverter agent into the first segment to fluidly isolate a formation surrounding the wellbore; forcing plug parts and sand from the first segment to the surface; drilling out a second composite plug which creates plug parts and opens the second segment having a second set of perforations through the casing; pumping diverter agent into the second segment to fluidly isolate the second set of perforations against flow into the formation; and forcing plug parts and sand from the second segment to the surface.

Abstract: An oven includes single or multiple decks of longitudinal burners extending from an infeed end to an outfeed end of a body. The burners are slanted relative to a direction of a movable carrier such that a product traveling on the carrier will be heated continuously from one side to the other by a burner whose orientation is diagonal to the product's path of travel. The proportion of air and gas may be separately controlled for each deck. Furthermore, each burner may be individually controlled and monitored to maintain a desired temperature within the body. Latitudinal pilot runners extend across the width of the oven to ignite and maintain the longitudinal burners. Infrared burners above the top deck initially heat a product to either seal in or eliminate moisture. The invention further comprises a method for heating a product.