US 12,139,659 B2
Compositions and methods for well cementing
Bipin Jain, Sugar Land, TX (US); and Shameed Ashraf, Kuala Lumpur (MY)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Sep. 26, 2023, as Appl. No. 18/474,926.
Application 18/474,926 is a division of application No. 17/643,692, filed on Dec. 10, 2021, granted, now 11,932,804.
Prior Publication US 2024/0018408 A1, Jan. 18, 2024
Int. Cl. C09K 8/42 (2006.01); C04B 28/10 (2006.01); C09K 8/467 (2006.01)
CPC C09K 8/424 (2013.01) [C04B 28/10 (2013.01); C09K 8/467 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A composition, comprising:
water;
a viscosifying agent, wherein the viscosifying agent comprises hydrophobically modified biopolymers comprising:
acetone-formaldehyde-sodium-bisulfate polymer; and
D-Glucopyranuronic acid, polymer with 6-deoxy-L-mannose, D-glucose, and D-mannose, calcium potassium sodium salt; and
an expanding agent comprising calcined magnesium oxide.