Patent ID: 11891565
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 0:
1. A host-guest lost circulation material (LCM) composition for sealing lost circulation zones in wellbores, the LCM composition comprising:
an aqueous solution;
one or more linear polymer chains, the linear polymer chains comprising polyethylene glycols (PEG) with molecular weights greater than 2500 g/mol, polypropylene glycols (PPG), polydimethylsiloxanes (PDMS), or combinations thereof; and
one or more cyclic molecules comprising alpha cyclodextrin, beta cyclodextrin, gamma cyclodextrin, or combinations thereof, and wherein
the one or more cyclic molecules form a host-guest structure around the one or more linear polymer chains utilizing van der Waals forces, wherein the LCM composition does not comprise cement.