Abstract: Compositions and methods are beneficial for use in downhole applications, especially oil and gas well bores. A composition includes an elastomer doped with a dopant. The presence of the dopant increases a rate of microbial degradation of the elastomer by a microbe. A method includes forming an article including a doped polymer. The doped polymer includes an elastomer doped with a dopant. The method also includes placing the article in a service environment. The presence of the dopant in the doped polymer increases a rate of microbial degradation of the elastomer by a microbe in the service environment.

Abstract: Compositions and methods are provided that are beneficial for use in downhole applications, especially oil and gas well bores. A composition includes an elastomer doped with a dopant. The presence of the dopant increases a rate of microbial degradation of the elastomer by a microbe. A method includes forming an article including a doped polymer. The doped polymer includes an elastomer doped with a dopant. The method also includes placing the article in a service environment. The presence of the dopant in the doped polymer increases a rate of microbial degradation of the elastomer by a microbe in the service environment.

Abstract: A seal or packing for use in dynamic or static applications subject to stretching, twisting or deforming forces, includes a body member forming the sealing and packing surfaces, together with an anti-extrusion reinforcing element incorporated in the body member. The anti-extrusion element is comprised of a helical round wire spring axially centered within a covering of an overlapping flat wire helical spring. The anti-extrusion elements are bounded or integrally joined to the body member at or near those locations thereon where extruding forces are likely to act.