	US 11,732,177 B2
	Cement slurries, cured cement and methods of making and use of these
Simone Musso, Houston, TX (US); and Sivaprakash Shanmugam, Houston, TX (US)
Assigned to Saudi Arabian Oil Company, Dharhan (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Nov. 10, 2021, as Appl. No. 17/523,287.
Claims priority of provisional application 63/112,261, filed on Nov. 11, 2020.
Prior Publication US 2022/0145159 A1, May 12, 2022
Int. Cl. C09K 8/467 (2006.01); C04B 24/40 (2006.01); C04B 28/02 (2006.01); C08G 63/91 (2006.01); E21B 33/14 (2006.01); C04B 103/00 (2006.01)

CPC C09K 8/467 (2013.01) [C04B 24/405 (2013.01); C04B 28/02 (2013.01); C08G 63/916 (2013.01); C08G 63/918 (2013.01); E21B 33/14 (2013.01); C04B 2103/0067 (2013.01)]

16 Claims

1. A cement slurry comprising:

water;

a cement precursor material; and

an expanding agent comprising at least a poly(lactic acid)-metal oxide nanocomposite, where the metal oxide comprises MgO, CaO, or both, and the poly(lactic acid) comprises a carboxylic acid terminal group.