US 12,460,507 B2
Apparatus and method of reducing surge when running casing
Nathan Barrett Wyatt, Houston, TX (US); Lonnie Carl Helms, Houston, TX (US); Tor Sigve Saetre, Tananger (NO); and Frank Vinicia Acosta Villarreal, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Dec. 15, 2022, as Appl. No. 18/082,102.
Claims priority of provisional application 63/349,467, filed on Jun. 6, 2022.
Prior Publication US 2023/0392472 A1, Dec. 7, 2023
Int. Cl. E21B 4/16 (2006.01); E21B 34/06 (2006.01); E21B 34/14 (2006.01)
CPC E21B 34/063 (2013.01) [E21B 4/16 (2013.01); E21B 34/142 (2020.05); E21B 2200/06 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A downhole tool comprising:
a tool body having a tool body outer diameter;
a liner connected to the lower end of the tool body, the liner having a liner outer diameter that is larger than the tool body outer diameter;
a plurality of diverter ports defined in a wall of the tool body;
a closing sleeve detachably connected in the tool body in a first position; and
a frangible seat disposed in the closing sleeve and positioned to receive a closing ball, the closing sleeve detachable from the tool body and movable to a second position upon the application of a first pressure above the engaged closing ball, the frangible seat being breakable into a plurality of pieces that pass through the liner upon the application of a second pressure after the closing sleeve has moved to the second position in the tool body.