US 12,305,769 B2
Delayed opening fluid communication valve
Colten T. Francis, Aledo, TX (US); Ian Beckett, Aledo, TX (US); and Andrew M. Eldridge, Fort Worth, TX (US)
Assigned to SUMMIT CASING SERVICES, LLC, Fort Worth, TX (US)
Filed by Summit Casing Services, LLC, Fort Worth, TX (US)
Filed on Sep. 21, 2022, as Appl. No. 17/949,578.
Prior Publication US 2024/0093798 A1, Mar. 21, 2024
Int. Cl. E21B 34/06 (2006.01); F16K 17/40 (2006.01); F16K 31/00 (2006.01)
CPC F16K 17/40 (2013.01) [F16K 31/001 (2013.01); E21B 34/063 (2013.01); E21B 2200/08 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A casing valve, comprising:
a first component configured to connect to a casing string;
a second component configured to connect to the casing string;
a mandrel disposed between the first component and the second component, the mandrel having a plurality of ports;
a housing disposed outside of the mandrel, the housing having a plurality of ports;
a piston disposed between the mandrel and the housing and configured to move in a first direction from a first position that forms a barrier between the ports of the mandrel and the ports of the housing to a second position that is adjacent to the ports of the mandrel and the ports of the housing; and
a dissolvable component configured to restrain the piston in the first position and to dissolve when exposed to a fluid to increase a lateral force on the piston, wherein the dissolvable component comprises a dissolvable seal.