APPARATUS AND METHOD FOR STIMULATING A SUBTERRANEAN FORMATION

摘要

A method for stimulating a subterranean formation (14) which is penetrated b y a well bore (10) having casing (11) positioned therein so as to establish flui d communication between the formation and the well bore. Propellant (50) is secured to the outer surface (48) of a carrier (44) having a plurality of apertures (45) foamed therein. Detonating coral is positioned within said carrier and when ignited causes the propellant to ignite initially at each aperture. In this manner, the propellant is caused to burn in controlled, uniform manner. Upon burning, the propellant generates gasps which clean perforation s previously formed through the casing into the formation and which extend fluid communication between the formation and the well bore.