US 11,939,833 B2
Retrievable wiper plug with fishing neck
Gunnar Lende, Tananger (NO); and Khahlil Rehman, Tananger (NO)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on May 12, 2022, as Appl. No. 17/663,039.
Claims priority of provisional application 63/261,264, filed on Sep. 16, 2021.
Prior Publication US 2023/0084710 A1, Mar. 16, 2023
Int. Cl. E21B 33/12 (2006.01); E21B 31/00 (2006.01); E21B 33/14 (2006.01)
CPC E21B 33/12 (2013.01) [E21B 31/00 (2013.01); E21B 33/14 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wiper plug comprising:
an inner mandrel, wherein the inner mandrel has an inner diameter and an outer diameter;
one or more wiper cups located circumferentially around the inner mandrel; and
a fishing neck connected to a rear portion of the inner mandrel, wherein the fishing neck is secured to or formed as an integral part of the inner mandrel such that an upward force on the fishing neck by a fishing tool does not cause the fishing neck to separate from the inner mandrel and the wiper plug is wholly retrieved from a tubing string.