Patent ID: 11898422
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Surface technology, coating (Chemistry)
Classification: CPC E  C | IPC C  E

Claim 0:
1. 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.