Downhole sand control screen system

Patent metadata

Field	Value
Publication number	US-12352136-B2
Application number	US-202117503604-A
Country	US
Kind code	B2
Filing date	Oct 18, 2021
Priority date	Feb 17, 2017
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

System and method of non-line-of-sight coating of a sand screen for use in wellbores during the production of hydrocarbon fluids from subterranean formations. The coatings can have uniformly coated internal and external surfaces.

First claim

What is claimed is:

1. A downhole system comprising:
a wellbore;
a sand screen placed within the wellbore, wherein the sand screen comprises a cylindrical woven mesh, the cylindrical woven mesh comprising an interior surface and an exterior surface, and wherein the cylindrical woven mesh is coated with a coating such that the coating on the interior surface and the exterior surface has a coating thickness of between 5 and 100 microns,
wherein the coating is uniform such that the coating thickness on the interior surface, the exterior surface, and a contour surface of the cylindrical woven mesh are all within 20 microns of each other,
wherein the coating comprises an infiltrated layer that is one or a combination of carbide, boride, nitride, carbo-nitride and silicide phases and the coating is formed by a chemical vapor infiltration process, and
wherein the coating is acid resistant and heat resistant to 800° F.

2. The downhole system of claim 1 , wherein the cylindrical woven mesh is one of: a perforated base pipe, a drainage layer, a filter media, and a protective jacket.

3. The downhole system of claim 2 , wherein the filter media is selected from the group consisting of: single-layer mesh screens, multilayer mesh screens, wire-wrapped screens, and slotted liners.

4. The downhole system of claim 3 , wherein the multilayer mesh screen is a 2-layer, 4-layer, 6-layer, or 8-layer mesh screen.

5. The downhole system of claim 1 , wherein a hardness of the coating is between 2500 Vickers and 5000 Vickers.

6. The downhole system of claim 1 , wherein the cylindrical woven mesh comprises carbon steel.

7. The downhole system of claim 1 , wherein the infiltrated layer of the coating is titanium carbide, titanium nitride, tungsten carbide, titanium di-boride, iron boride, nickel boride, silicon carbide, boron carbide, molybdenum boride, or a mixture thereof.

8. The downhole system of claim 7 , wherein the infiltrated layer of the coating comprises tungsten carbide.

9. The downhole system of claim 1 , wherein the coating thickness is in a range from about 5 microns to 50 microns.

10. The downhole system of claim 1 , wherein the coating thickness varies by no more than +/−15 microns.

11. The downhole system of claim 1 , wherein the coating thickness varies by no more than +/−10 microns.

12. The downhole system of claim 1 , wherein the coating thickness varies by no more than +/−5 microns.

Assignees

• Chevron Usa Inc

Inventors

• Davis Jeremy Alexander
• Lazo Antonio
• Sarrafi-Nour Reza
• Underdown David Reuel

Classifications

• C23C16/045

  Coating cavities or hollow spaces, e.g. interior of tubes; Infiltration of porous substrates · CPC title

• C23C16/30

  Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides · CPC title

• C23C16/38

  Borides · CPC title

• C23C18/1601

  Process or apparatus · CPC title

• C23C16/32

  Carbides · CPC title