Exxonmobil Research and Engineering Company

Exxonmobil Upstream Research Company

Srinivasan Rajagopalan

Mehmet Deniz Ertas

Adnan Ozekcin

Jeffrey Roberts Bailey

Tabassumul Haque

Bo Zhao

Hyun Woo Jin

Terris Field Walker

Donald N Schulz

Timothy D Shaffer

Victor DeFlorio

Arnold Lustiger

Lei Wang

Huaxing Zhou

Hyunwoo Jin

Erika Biediger

A multi-layer friction reducing tape, including: a foil layer including a metal, polymer, or hybrid-metal-polymer; an under layer disposed on the foil layer; an adhesion promoting layer contiguous with a surface of the under layer; a functional layer that includes a fullerene based composite, a diamond based material, diamond-like-carbon (DLC), or combinations thereof, wherein the functional layer is contiguous with a surface of the adhesion promoting layer; and a tape, including an adhesive layer and a backing material, wherein the adhesive layer is attached to a surface of the foil layer opposite the under layer.

Diamond-like-carbon based friction reducing tapes

The present disclosure relates to methods for preparing materials from heavy feedstocks. In particular, the disclosure provides a chemical process to convert heavy feedstocks with predominant polyaromatic hydrocarbon molecules or species, including the residues of petrochemical refining or extraction, into thermoset or thermoplastic materials that can be used alone or as a component in a composite material.

Methods for preparing materials from polyaromatic heavy feedstocks

Provided are low friction coatings with improved abrasion, wear resistance and methods of making such coatings. In one form, the coating includes: i) an under layer selected from the group consisting of CrN, TiN, TiAlN, TiAlVN, TiAlVCN, TiSiN, TiSiCN, TiAlSiN and combinations thereof, wherein the under layer ranges in thickness from 0.1 to 100 &#x3bc;m, ii) an adhesion promoting layer selected from the group consisting of Cr, Ti, Si, W, CrC, TiC, SiC, WC, and combinations thereof, wherein the adhesion promoting layer ranges in thickness from 0.1 to 50 &#x3bc;m and is contiguous with a surface of the under layer, and iii) a functional layer selected from the group consisting of a fullerene based composite, a diamond based material, diamond-like-carbon and combinations thereof, wherein the functional layer ranges from 0.1 to 50 &#x3bc;m and is contiguous with a surface of the adhesion promoting layer.

Low friction coatings with improved abrasion and wear properties and methods of making

Provided are coated oil and gas well production devices and methods of making and using such coated devices. In one form, the coated device includes one or more cylindrical bodies, hardbanding on at least a portion of the exposed outer surface, exposed inner surface, or a combination of both exposed outer or inner surface of the one or more cylindrical bodies, and a coating on at least a portion of the inner surface, the outer surface, or a combination thereof of the one or more cylindrical bodies. The coating includes one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating. The coated oil and gas well production devices may provide for reduced friction, wear, erosion, corrosion, and deposits for well construction, completion and production of oil and gas.

Coated oil and gas well production devices

Provided are coated sleeved oil and gas well production devices and methods of making and using such coated sleeved devices. In one form, the coated sleeved oil and gas well production device includes one or more cylindrical bodies, one or more sleeves proximal to the outer diameter or inner diameter of the one or more cylindrical bodies, hardbanding on at least a portion of the exposed outer surface, exposed inner surface, or a combination of both exposed outer or inner surface of the one or more sleeves, and a coating on at least a portion of the inner sleeve surface, the outer sleeve surface, or a combination thereof of the one or more sleeves. The coating includes one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating. The coated sleeved oil and gas well production devices may provide for reduced friction, wear, erosion, corrosion, and deposits for well construction, completion and production of oil and gas.

Coated sleeved oil and gas well production devices

Provided are drill stem assemblies with ultra-low friction coatings for subterraneous drilling operations. In one form, the coated drill stem assemblies for subterraneous rotary drilling operations include a body assembly with an exposed outer surface including a drill string coupled to a bottom hole assembly, a coiled tubing coupled to a bottom hole assembly, or a casing string coupled to a bottom hole assembly and an ultra-low friction coating on at least a portion of the exposed outer surface of the body assembly, hardbanding on at least a portion of the exposed outer surface of the body assembly, an ultra-low friction coating on at least a portion of the hardbanding, wherein the ultra-low friction coating comprises one or more ultra-low friction layers, and one or more buttering layers interposed between the hardbanding and the ultra-low friction coating. The coated drill stem assemblies disclosed herein provide for reduced friction, vibration (stick-slip and torsional), abrasion, and wear during straight hole or directional drilling to allow for improved rates of penetration and enable ultra-extended reach drilling with existing top drives.

Ultra-low friction coatings for drill stem assemblies

Growing community of inventors

Easton, PA, United States of America

Srinivasan Rajagopalan