US 11,885,316 B2
Pump fluid end with suction valve closure assist
Justin Lee Hurst, Duncan, OK (US); and David Mark Stribling, Duncan, OK (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Feb. 9, 2022, as Appl. No. 17/667,669.
Application 17/667,669 is a continuation of application No. 16/436,312, filed on Jun. 10, 2019, granted, now 11,280,326.
Prior Publication US 2022/0154705 A1, May 19, 2022
Int. Cl. F04B 7/02 (2006.01); F04B 53/12 (2006.01); F04B 53/10 (2006.01)
CPC F04B 7/0266 (2013.01) [F04B 53/1085 (2013.01); F04B 53/12 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A pump fluid end comprising:
a reciprocating element disposed at least partially within a reciprocating element bore of the pump fluid end;
a discharge valve assembly;
a suction valve assembly coupled with a front end of the reciprocating element such that movement of a suction valve member of the suction valve assembly away from the reciprocating element in a direction toward the discharge valve assembly opens the suction valve; and
a suction valve stop, wherein the suction valve stop is positioned within the reciprocating element bore such that the suction valve stop contacts and applies a closing force to the suction valve assembly when the suction valve assembly is stuck open at the end of a discharge stroke of the reciprocating element,
wherein, when the suction valve assembly is not stuck in an open position at the end of the discharge stroke, a minimum distance between the suction valve assembly and the suction valve stop is zero, such that the suction valve assembly contacts the suction valve stop with a closing force less than a rod load limit of a connecting rod coupled to the reciprocating element and the pump power end of the pump during normal operation of the pump.