Schlumberger Technology Corporation

Virendra Singh

Manuel P Marya

Jushik Yun

Alireza Zolfaghari

Tatiana Reyes Ayers

You Lu

A system may include a substrate having a tensile strength of at least 10,000 PSI at an ambient temperature. The system may also include a carbon rich layer deposited on the substrate, wherein the carbon rich layer comprises at least one of a carbide, a nitride, a boride, a silicide, an oxide, a sulfide, or a transition-metal or non-metal ceramic-forming element, wherein the carbon rich layer comprises a carbon content including spcarbon and spcarbon, wherein the carbon content has greater than 40% spcarbon, a sp/spratio of the carbon content is less than 1.5, or both. The carbon-rich layer is designed to reduce or prevent the formation of adherent scales on flow system surfaces used in well production, fluid injection or gas sequestration, and includes electrically-actuated downhole components having dynamic sliding surfaces.

Carbon rich layer for scale control

The disclosure provides for anti-scale deposition coatings for use on surface, such as on oilfield parts. The coating includes a first, sublayer of a metal, ceramic, or metal-ceramic composite, which is characterized in having a hardness in excess of 35 HRC. The coating includes a second, top layer over the first layer, that is a polymer. A surface of the first layer may be conditioned to have a roughened or patterned topology for receipt of and adherence with the at least one top layer. The first layer may provide the coating with hardness, and the at least one top layer may provide the coating with low-friction and anti-scale properties.

Anti-scale deposition hierarchical coatings for wellbore applications

An oilfield tool can include a composite structure that includes a reactive shape-memory alloy element disposed at least in part in a filler material.

Reactive super-elastic composite oilfield components

Embodiments of the present technology may include a tubular product for oilfield applications. The tubular product may include a tubular substrate, which may include a ferrous alloy. The tubular substrate may have an inner surface characterized by an inner diameter and an outer surface characterized by an outer diameter. The tubular product may also include a first layer deposited over at least one of the inner surface or the outer surface. The first layer may include aluminum. The tubular product may further include a second layer, which may include aluminum oxide formed by micro arc oxidation of a portion of the first layer.

Property enhancement of surfaces by electrolytic micro arc oxidation

A composite piezoelectric coating (CPC) method includes entraining a powder in a first carrier gas stream; heating a second carrier gas stream to a predetermined temperature; combining the first carrier gas stream and second carrier gas stream into a combined carrier gas stream; ejecting the combined carrier gas stream at a target at a predetermined velocity, and consolidating the powder on the target by impact of the ejected combined carrier gas stream with the target.

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Stafford, TX, United States of America

Virendra Singh