IP Library › Granted Patent US 12,258,850
Granted Patent B2
US 12,258,850 · App. 18/678,884 · Granted Mar 25, 2025

Fluid end

Inventors: Kelcy Jake Foster (Sulphur, OK); Micheal Cole Thomas (Azle, TX); Christopher Todd Barnett (Stratford, OK); Nicholas Son (Davis, OK); John Keith (Ardmore, OK)
Assignee: Kerr Machine Co.
E21B43/2607F04B53/164F04B53/22
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Quick Facts
Patent No.
US 12,258,850
App. No.
18/678,884
Granted
Mar 25, 2025
Kind
B2
Abstract

A fluid end assembly made of a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a plurality of individual components joined together in a row. Two sets of fasteners are used to secure various components of each fluid end section together. When the fluid end section is assembled, a first set of fasteners is in a spaced relationship with and faces a second set of fasteners. At least one component making up the multi-piece fluid end section is configured to have a plurality of stay rods attached thereto. The stay rods interconnect the fluid end assembly and a power end assembly.

Claims (57)

1. A fluid end, comprising:

a first fluid end section, comprising:

a housing having a substantially horizontal longitudinal axis, the housing comprising:

a first section; and

a second section, joined to the first section by a first plurality of fasteners;

wherein a substantially horizontal bore extends through the first section and the second section along the substantially horizontal longitudinal axis; and

a stuffing box attached to the second section of the housing by a second plurality of fasteners;

in which an end of each of the first plurality of fasteners faces an end of each of the second plurality of fasteners.

2. The fluid end of claim 1 , further comprising a fluid routing plug, in which the fluid routing plug is disposed within the substantially horizontal bore.

3. The fluid end of claim 1 , in which the first section is defined by:

a first suction bore in communication with the substantially horizontal bore, disposed above the substantially horizontal longitudinal axis; and

a second suction bore in communication with the substantially horizontal bore, disposed below the substantially horizontal longitudinal axis.

4. The fluid end of claim 1 , in which the first section is defined by:

a first discharge bore in communication with the substantially horizontal bore, disposed above the substantially horizontal longitudinal axis; and

a second discharge bore in communication with the substantially horizontal bore, disposed below the substantially horizontal longitudinal axis.

5. The fluid end of claim 4 , in which the first section is defined by:

a first suction bore in communication with the substantially horizontal bore, disposed above the substantially horizontal longitudinal axis; and

a second suction bore in communication with the substantially horizontal bore, disposed below the substantially horizontal longitudinal axis.

6. The fluid end of claim 5 , further comprising a fluid routing plug disposed within the substantially horizontal bore, wherein the first discharge bore and second discharge bore are disposed entirely on a first side of the fluid routing plug.

7. The fluid end of claim 6 , in which the first suction bore and second suction bore intersect the substantially horizontal bore at a location along a length of the fluid routing plug.

8. The fluid end of claim 1 further comprising:

a second fluid end section, identical to the first fluid end section, and in side-by-side relationship with the first fluid end section.

9. The fluid end of claim 1 , further comprising:

five fluid end sections, each fluid end section being the fluid end section of claim 1 , wherein the five fluid end sections are arranged in side-by-side relationship.

10. A pump, comprising:

a power end;

five plungers, each of the five plungers driven by the power end; and

the fluid end of claim 9 , wherein:

each of the five plungers is disposed in the substantially horizontal bore of one and only one of the five fluid end sections.

11. A pump, comprising:

a power end;

at least one plunger driven by the power end, and;

the fluid end of claim 1 , in which the at least one plunger is disposed within the substantially horizontal bore.

12. A fluid end comprising:

a fluid end section, comprising:

a housing having a horizontal bore formed through the housing, extending along a longitudinal axis, the housing comprising a flanged section;

a stuffing box attached to the housing using a plurality of fasteners; and

a retainer attached to the stuffing box using the plurality of fasteners;

in which the plurality of fasteners extend through the flanged section of the housing, the stuffing box, and the retainer such that:

a first end of each of the plurality of fasteners projects from the flanged section; and

an opposed second end of each of the plurality of fasteners projects from the retainer.

13. The fluid end of claim 12 , in which the plurality of fasteners is characterized as a second plurality of fasteners, in which:

the housing comprises a first section and a second section, wherein the first section and second section are joined by a first plurality of fasteners.

14. The fluid end of claim 13 , in which an end of each of the first plurality of fasteners faces a first end of each of the second plurality of fasteners.

15. The fluid end of claim 12 , further comprising a fluid routing plug disposed within the horizontal bore, wherein a first discharge bore and a second discharge bore are disposed entirely on a first side of the fluid routing plug.

16. The fluid end of claim 12 , wherein the fluid end section is characterized as a first fluid end section, and further comprising:

a second fluid end section that is identical to the first fluid end section, wherein the first fluid end section and second fluid end section are in side-by-side relationship.

17. A pump, comprising:

a power end configured to reciprocate a plunger, and

the fluid end of claim 12 ,

wherein the plunger is disposed within the horizontal bore of the fluid end section.

18. The pump of claim 17 further comprising:

a plurality of stay rods extending between the power end and the fluid end section.

19. The pump of claim 17 in which the housing is defined by:

a first discharge outlet in communication with the horizontal bore; and

a second discharge outlet in communication with the horizontal bore;

wherein the first discharge outlet is disposed above the longitudinal axis and the second discharge outlet is disposed below the longitudinal axis.

Continuity (6)
Continuation 18488435 · Oct 17, 2023
Provisional Application 63508577 · Jun 16, 2023
Provisional Application 63506222 · Jun 5, 2023
Provisional Application 63422637 · Nov 4, 2022
Provisional Application 63416644 · Oct 17, 2022
Related Publication 20240309742A1 · Sep 19, 2024
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