Chevron U.s.a. Inc.

Triad National Security, LLC

Hakim Boukhalfa

Robert David Gilbertson

Harvey Edwin Goodman

Robert Clifford Roback

Robert Patrick Currier

Deryck Edward Matthew Williams

Rajesh S Nair

Scott W Imbus

Nathan James Welch

Artaches Migdissov

Timothy Leo Quirk

Andrew Strzelecki

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

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 temperature or pH. In specific embodiments, the smart gel is disposed within voids in a well and triggered to swell in order to seal the voids. One application of the smart gel sealant is to seal the casing of a well against the leakage of gas, such as HS.

Method for sealing a void in a well using smart gels

The present disclosure provides system and method embodiments for extracting and separating rare earth elements (REEs) from various starting materials and sources. The system and method embodiments disclosed herein facilitate efficient REE extraction, separation, and/or isolation, even when the REEs are present in a starting material at a relatively low level compared to undesirable metals co-present in the starting material. In at least some examples, the disclosed system and method embodiments may be used to recover one or more REEs from coal derived acid mine drainage.

System and method embodiments for element extraction and separation

Embodiments of the disclosure include swellable smart gel sealants. In certain embodiments, the smart gel sealants reversibly swell when exposed to a certain trigger, such as temperature or pH. In specific embodiments, the smart gel is disposed within voids in a well and triggered to swell in order to seal the voids. One application of the smart gel sealant is to seal the casing of a well against the leakage of gas, such as CO.

Method for sealing a void in a well using a smart gel sealant

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Santa Fe, NM, United States of America

Hakim Boukhalfa