US 11,746,615 B2
Well treatment with barrier having plug in place
Nicholas W. McFarlin, Midland, TX (US); Ryan R. Bacsik, Houston, TX (US); and Nauman H. Mhaskar, Houston, TX (US)
Assigned to WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US)
Filed by WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US)
Filed on Jul. 11, 2022, as Appl. No. 17/861,686.
Application 17/861,686 is a continuation of application No. 17/618,047, granted, now 11,454,081, previously published as PCT/US2020/039075, filed on Jun. 23, 2020.
Claims priority of provisional application 62/872,828, filed on Jul. 11, 2019.
Prior Publication US 2022/0341279 A1, Oct. 27, 2022
Int. Cl. E21B 33/12 (2006.01); E21B 34/06 (2006.01); E21B 43/14 (2006.01)
CPC E21B 33/12 (2013.01) [E21B 34/063 (2013.01); E21B 43/14 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A well barrier for use in a subterranean well, the well barrier comprising:
an inner mandrel;
a flow passage extending longitudinally through the inner mandrel; and
a plug releasably secured relative to the inner mandrel, the plug blocking fluid flow through the flow passage, and the plug including a shoulder that prevents the plug from displacing completely through the inner mandrel in a first longitudinal direction, in which the plug is configured to release and displace out of the inner mandrel in response to application of a first positive pressure differential in the first longitudinal direction and in response to application of a second positive pressure differential in a second longitudinal direction opposite to the first longitudinal direction.