Varco I/p, Inc.

J W H Van Rijzingen

David Brian Mason

Rosmalen R Roling

An oil or gas well slip system is provided having a slip bowl with an interactive contact surface and a slip assembly having a mating interactive contact surface for slidable engagement with the slip bowl interactive contact surface, wherein the slip bowl and the slip assembly are each comprised of a first material. A second material is attached to the interactive contact surface of either the slip bowl or the slip assembly, wherein the second material is compositionally different from the first material to prevent cold welding between the slip bowl and the slip assembly and wherein the second material has little or no tendency to dissolve into the atomic structure of the first material.

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Oosterhout, Netherlands

J W H Van Rijzingen