Patent ID: 7341283
Filing Date: 2008-03-11
Classification: E21B,F16L

Abstract:
1. A flexible pipe joint for conveying production fluid greater than 180° F. in a subsea environment, the flexible pipe joint comprising: a body; an extension pipe; a laminated elastomeric flex element coupling the extension pipe to the body, the laminated elastomeric flex element having alternate elastomer layers and reinforcement layers, the elastomer layers including inner elastomer layers near to the extension pipe and outer elastomer layers away from the extension pipe, wherein the inner elastomer layers have greater shear area than the outer elastomer layers and the inner elastomer layers have a higher shear modulus than the outer elastomer layers to shift strain from the inner elastomer layers to the outer elastomer layers; and a heat shield disposed in the extension pipe in the vicinity of the laminated elastomeric flex element; wherein the heat shield includes non-metallic material inserted into the extension pipe and a multi-section ring engaging the extension pipe and disposed over the non-metallic material inserted into the extension pipe for retaining the non-metallic material inserted into the extension pipe.