US 11,898,422 B2 · Diamond coating on the cone for expandable tubulars

Abstract

An expansion cone useful for expanding an expandable tubular, the expansion cone includes: a base material selected from a group consisting of alloyed steel, tungsten carbide coated alloyed steel, and cemented tungsten carbide; an intermediate buffering layer; and a coating deposited on an outer surface of the intermediate buffering layer; wherein the intermediate buffering layer is deposited between an outer surface of the steel alloy base material and the coating, wherein the intermediate buffering layer is one or more selected from a group consisting of Silicon (Si), Titanium (Ti), and silicon carbide (SiC), and wherein the coating is a diamond containing coating.

Claims8

Dependent claims

An expansion cone useful for expanding an expandable tubular, the expansion cone comprising:

a steel alloy base material having an upper cylindrical section, a lower cylindrical section, and a tapered section therebetween;
a plurality of pockets formed in at least the tapered section of the steel alloy base material;
a plurality of inserts disposed within the plurality of pockets, wherein the plurality of inserts comprise an outer surface layer or coating selected from a group consisting of nanocrystalline diamond, amorphous diamond, a diamond-like carbon, and mixtures thereof;
wherein an upper surface of each of the plurality of inserts is 1-50 microns above an outer surface of the steel alloy base material.

1 more element

Dependencies are inferred from the claim text.

Diamond coating on the cone for expandable tubulars

Life of this patent

Diamond coating on the cone for expandable tubulars

Life of this patent

Abstract

Claims8