Oil and gas well pump components and method of coating such components

Patent metadata

Field	Value
Publication number	US-11346359-B2
Application number	US-201615070538-A
Country	US
Kind code	B2
Filing date	Mar 15, 2016
Priority date	Oct 30, 2015
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A centrifugal pump component for an oil and gas well pump includes a substrate with an outer surface configured to contact oil and gas well fluid. The component further includes a coating formed on at least a portion of the outer surface. The coating includes a combination of hard particles and a metal matrix.

First claim

What is claimed is:

1. A centrifugal pump component for an oil and gas well pump, said component comprising:
a substrate comprising an outer surface configured to contact oil and gas well fluid; and
a coating formed on at least a portion of said outer surface, wherein said coating comprises:
a metal matrix, wherein the metal matrix comprises nickel and phosphorus, wherein the phosphorous concentration is within a range from about 9 volume percent to about 12 volume percent; and
diamond particles, wherein the diamond particles are distributed throughout the metal matrix, and wherein a concentration of diamond particles within the metal matrix is within a range from approximately 25 volume percent to approximately 50 volume percent of the coating.

2. The component in accordance with claim 1 , wherein said diamond particles have a diameter within a range from approximately 0.5 micrometers (μm) to approximately 4 μm.

3. The component in accordance with claim 1 , wherein said coating comprises a diamond particle concentration of approximately 37 volume percent.

4. The component in accordance with claim 1 , wherein said coating has a thickness within a range from approximately 10 μm to approximately 152 μm.

5. The component in accordance with claim 1 , wherein said coating is formed by an electroless nickel plating process.

6. The component in accordance with claim 5 , wherein said coating is post-heat treated.

7. A centrifugal pump for an oil and gas well comprising:
at least one diffuser comprising a diffuser outer surface, wherein said diffuser outer surface is configured to contact oil and gas well fluid;
at least one impeller comprising an impeller outer surface, wherein said impeller outer surface is configured to contact oil and gas well fluid; and
a coating formed on at least a portion of each of said diffuser outer surface and said impeller outer surface, wherein said coating comprises:
a metal matrix, wherein the metal matrix comprises nickel and phosphorus, wherein the phosphorous concentration is within a range from about 9 volume percent to about 12 volume percent; and
diamond particles, wherein the diamond particles are distributed throughout the metal matrix, and wherein a concentration of diamond particles within the metal matrix is within a range from approximately 25 volume percent to approximately 50 volume percent of the coating.

8. The pump in accordance with claim 7 , wherein said impeller outer surface comprises an impeller shaft and said diffuser outer surface comprises a diffuser inner radial portion.

Assignees

• Baker Hughes Oilfield Operations Llc

Inventors

• Gray Dennis Michael
• Curtis Todd Charles
• Hong Lyon
• Kool Lawrence Bernard

Classifications

• F04D13/10

  adapted for use in mining bore holes · CPC title

• F04D29/2294 Primary

  for protection, e.g. against abrasion · CPC title

• C23C18/1662

  Use of incorporated material in the solution or dispersion, e.g. particles, whiskers, wires · CPC title

• C23C18/1692

  Heat-treatment · CPC title

• F04D29/448

  bladed diffusers · CPC title