US 12,392,219 B2
Ball deflector for float collar
Darko Arsoski, Angus (GB); Douglas Brian Farley, Missouri City, TX (US); and Christopher Hay, Aberdeen (GB)
Assigned to DOWNHOLE PRODUCTS LIMITED
Filed by DOWNHOLE PRODUCTS LIMITED, Aberdeen (GB)
Filed on May 6, 2024, as Appl. No. 18/656,053.
Claims priority of provisional application 63/516,551, filed on Jul. 31, 2023.
Prior Publication US 2025/0043638 A1, Feb. 6, 2025
Int. Cl. E21B 33/14 (2006.01); E21B 21/10 (2006.01)
CPC E21B 33/14 (2013.01) [E21B 21/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A float collar for use in a wellbore, comprising:
a float valve;
a tubular housing having a coupling formed at a longitudinal end thereof for assembly as part of a downhole tubular;
a sheath bonding the float valve to an inner surface of the housing within a flow bore thereof, the sheath having a bore formed therein; and
a ball deflector seated against a top of the sheath and having: an upper grate and a lower anchor engaged with an inner surface of the sheath adjacent the bore,
wherein:
the float valve, the sheath, and the ball deflector are made from materials drillable by a polycrystalline diamond compact (PDC) drill bit,
the grate has: an outer rim, an inner hub, a plurality of ribs connecting the rim and the hub, and a plurality of ports formed between the ribs
the anchor has an annular base and a split finger extending longitudinally from the base,
a lower portion of the finger has a plurality of circumferential teeth formed on an outer surface thereof,
the finger is biased toward a natural position, and
the teeth are engaged with the inner surface of the sheath with the finger in a retracted position, and
the base also has a plurality of circumferential teeth formed on an outer surface thereof engaged with the inner surface of the sheath.