US 12,252,946 B2
Wellbore tubular anchor sub and seal for modular completion interface
Angus Barron, Aberdeenshire (GB); and Borisa Lajesic, Stavanger (NO)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jul. 6, 2023, as Appl. No. 18/218,894.
Prior Publication US 2025/0012157 A1, Jan. 9, 2025
Int. Cl. E21B 23/06 (2006.01); E21B 33/124 (2006.01); E21B 43/14 (2006.01)
CPC E21B 23/06 (2013.01) [E21B 33/124 (2013.01); E21B 43/14 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A selective anchor assembly for a downhole completion, comprising:
an anchor sub comprising a generally cylindrical shape, an outer surface, and an inner passage;
at least one button slip sealingly coupled to a corresponding piston port on the anchor sub, wherein the corresponding piston port is fluidically coupled to the inner passage; and
a seal assembly coupled to the anchor sub, comprising at least one seal unit, and configured to transition from a first position to a second position in response to a temperature change,
wherein the selective anchor assembly is configured to slidingly and sealingly engage a polish bore, and anchor to a shroud coupled to the polish bore in response to pressure applied to the inner passage, and
wherein the transition from the first position to the second position comprises reducing a distance between a downhole end of the anchor sub and an uphole end of the polish bore.