Chevron U.s.a. Inc.

Triad National Security, LLC

Deryck Edward Matthew Williams

Caleb Kimbrell Carroll

Jay Patrick Painter

Wangming Lu

Robert David Gilbertson

Hakim Boukhalfa

William Stephen Averill

Rajesh S Nair

Michael Ryan Fitzsimmons

Nathan James Welch

Timothy Leo Quirk

Khiem Nguyen

David Crenshaw Barrow

A wellhead bracing system for a subsea well includes a base plate assembly and a wellhead brace assembly. The base plate assembly comprises a top surface, a bottom surface, a base plate aperture, and a plurality of anchor holes. The wellhead brace assembly comprises a vertical plate assembly having a cylindrical shape, a horizontal plate assembly to which the vertical plate assembly is attached, and a vertical support assembly attached to an outer surface of the vertical plate assembly and attached to the top surface of the horizontal plate assembly. Horizontal plate holes of the horizontal plate assembly are configured to attach to studs on the top surface of the base plate to secure the wellhead brace assembly to the base plate assembly. The wellhead bracing system slides onto a wellhead of the subsea well and braces an exterior of the wellhead.

Wellhead bracing system

A method of making a cement composite can include contacting an aqueous solution comprising calcium ions with a carbon dioxide source producing a carbonated aqueous solution. Fine particles can be submerged in the carbonated aqueous solution to produce microaggregate particles comprising the fine particles coated with calcium carbonate. The microaggregate particles can be combined with cement particles to produce the cement composite. The cement composite can be used in cementing applications for hydrocarbon wells including for casing liners and well plugs.

Carbon dioxide sequestered cement for well cementing

Embodiments of the disclosure include swellable smart gel sealants and methods of using smart gel sealants. In certain embodiments, the smart gel sealants reversibly swell when exposed to a certain trigger, such as carbonic acid and/or sulfuric acid. In specific embodiments, the smart gel is comprised within a cement composition.

Method to enhance the self-sealing of well cement leakage pathways using a smart gel cement additive

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Houston, TX, United States of America

Deryck Edward Matthew Williams