Patent ID: 9435333
Filing Date: 2016-09-06
CPC Classification: F04B,F05C,Y10T

Claim Text:
1. A method comprising: providing a well service pump; providing a fluid end body that comprises a corrosion resistant alloy (a) having a fatigue limit of at least 75 ksi and (b) comprising chromium as an alloying element at 5% or greater by weight of the corrosion resistant alloy; installing the fluid end body in the well service pump; and pumping an aqueous-based fluid through the fluid end body, wherein the fatigue limit is greater than or equal to a tensile stress assumed by the fluid end body when the well service pump operates at maximum working pressure while pumping the aqueous-based fluid, wherein the aqueous-based fluid has a salt concentration of about 4% by weight or greater.