Patent ID: 8191633

Claim:
A downhole tool, comprising: an annular body having a valve assembly disposed therein, the valve assembly comprising: a first member preventing flow in a first direction through the annular body; a second member preventing flow in a second direction through the annular body, wherein the second member is free to move along at least a majority of a longitudinal extent of the annular body and comprises a degradable material that is temperature dependent, pressure dependent, or both temperature and pressure dependent; and a shoulder disposed on an inner diameter of the body between the first and second members, the shoulder having a first end contoured to sealingly engage an outer contour of the first member and a second end contoured to sealingly engage an outer contour of the second member; and an element system disposed about the annular body, wherein the element system is disposed beneath the shoulder, and the first and second members engage the first and second ends of the shoulder above the element system.