The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Feb. 13, 2023
Saudi Arabian Oil Company, Dhahran, SA;
King Abdullah University of Science and Technology, Thuwal, SA;
Carlos Daniel Rodriguez Hernandez, Thuwal, SA;
Ahmed Amr Mohamed Hafez Abdelaziz, Thuwal, SA;
Thomas Finkbeiner, Thuwal, SA;
Juan Carlos Santamarina, Thuwal, SA;
Mohammad Arfaj, Dhahran, SA;
Raed A. Alouhali, Dhahran, SA;
Timothy Eric Moellendick, Dhahran, SA;
SAUDI ARABIAN OIL COMPANY, Dhahran, SA;
KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY, Thuwal, SA;
Abstract
Lost circulation materials may be particles having a core-shell structure. Said particles may include: a core comprising an expandable material; and a shell around the core, the shell comprising an outer permeable membrane, an inner permeable membrane, and a hardenable material between the outer and inner permeable membranes; and wherein the core-shell structure is folded. The particles may be initially folded where, upon exposure to a stimulus, the core expands in volume (which unfolds the particles) and the shell increases in strength. The expanded particles can then clog large openings/apertures in the formation.