Weatherford Technology Holdings, LLC

David Peter Kippie

Thomas Floyd Bailey

Ram Kumar Bansal

Arthur Warren Meeks

Mohammed Aleemul Haq

Miroslav Mihalj

Maria F Paramo G

Bin Xiao

Fred Donham

Shawn Lu

Marcelo Comarin

Michael C Barry

Drilling fluids were developed including a base fluid, a weighting agent and/or a bridging agent, and a thickening agent, where the weighting agent and/or the bridging agent includes a particulate strontium carbonate having a desired distribution, for weighting agents, the distribution includes particles between 2&#x3bc; and 5000&#x3bc; and for bridging agents, the distribution is constructed from particles having specific sizes. Methods making and using the drilling fluids were also discovered.

Strontium carbonate bridging materials and methods for making and using same

A wellbore cleaning tool for removing irregularities along the inner surface of a wellbore tubular may include a top sub, a cutting assembly, and a bottom sub. The tool is operable to remove irregularities, such as debris, burrs, and jagged edges, along the inside of the wellbore tubular, and thereby provide a clean, inner surface finish. The tool may be actuated into a retracted position, an extended position, and/or a deactivated position.

Deburring mill tool for wellbore cleaning

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Abilene, TX, United States of America

David Peter Kippie