	US 12,264,281 B2
	Repairing wellbore cement structures and related compositions
Ashok Santra, Houston, TX (US); and Arthur Hale, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Aug. 9, 2023, as Appl. No. 18/446,819.
Prior Publication US 2025/0051629 A1, Feb. 13, 2025
Int. Cl. C09K 8/487 (2006.01); C04B 14/06 (2006.01); C04B 24/24 (2006.01); C04B 103/20 (2006.01); C04B 103/44 (2006.01); C04B 103/46 (2006.01)

CPC C09K 8/487 (2013.01) [C04B 14/06 (2013.01); C04B 24/24 (2013.01); C04B 2103/20 (2013.01); C04B 2103/44 (2013.01); C04B 2103/46 (2013.01); C04B 2201/50 (2013.01)]

14 Claims

1. A method comprising:

providing a cement structure in a wellbore, wherein the cement structure comprises: a cement and elastomer particles at 1% by weight of the cement (bwoc) to 25% bwoc;

applying heat to the cement structure to heat at least a portion of the elastomer particles above a melting point of an elastomer of the elastomer particles to cause at least a portion of the elastomer to melt and infiltrate into a defect in the cement structure; and

allowing the elastomer to cool below the melting point of the elastomer to yield a repaired cement structure.