Patent ID: 10260310

Abstract:
A high pressure high temperature packer features an actuation assembly of a plurality of rings rotationally locked to a mandrel and initially spaced apart. A pressure actuated piston responsive to tubing pressure pushes the actuation rings together. Spring discs also rotationally locked to the mandrel are between pairs of actuation rings that feature a circumferential protrusion. On application of axial force the protrusion engages a sloping portion of the spring disc and moves the sloping portion toward a more vertical orientation. A corrugated tube surrounds the spring discs with a curled end of each spring disc engaged to an internal tube corrugation. A seal element is on the external corrugations of the tube. The spring discs expand the tube to bring the sealing element and external tube peaks to the borehole wall. Slots in the spring disc allow irregular growth of the tube to conform to surface irregularities.