Patent ID: 8978749
Filing Date: 2015-03-17
Classification: E21B,F42D

Abstract:
1. A perforation tool assembly, comprising a perforation gun; and a mass energy absorber coupled to the perforation gun and configured to alter the propagation of mechanical energy released by firing one or more perforation guns, wherein the mass energy absorber comprises: a tool body, wherein the tool body is coupled to the perforation gun, wherein the tool body comprises a first end and a second end, and wherein a distance between the first end and the second end is fixed; a mass suspended within the tool body, wherein the mass is moveably suspended within the tool body; and at least one absorber, wherein the at least one absorber comprises a first absorber disposed between a first end of the mass and the first end of the tool body and a second absorber disposed between a second end of the mass and the second end of the tool body, wherein the mass is supported within the tool body by the first absorber and the second absorber, wherein the at least one absorber is disposed between the mass and the perforating gun, and wherein the first absorber has a different compliance than the second absorber.