US 11,999,901 B2
Multifunctional wax dispersant for subterranean chemical applications
Liang Xu, The Woodlands, TX (US); Sofia Sirak, Plymouth Meeting, PA (US); Iryna Zhuk, Warrington, PA (US); and Claudia Meister, Darmstadt (DE)
Assigned to Evonik Operations GmbH, Essen (DE)
Filed by Evonik Operations GmbH, Essen (DE)
Filed on Apr. 26, 2023, as Appl. No. 18/307,714.
Claims priority of application No. 22170499 (EP), filed on Apr. 28, 2022.
Prior Publication US 2023/0416596 A1, Dec. 28, 2023
Int. Cl. C09K 8/584 (2006.01); E21B 43/26 (2006.01)
CPC C09K 8/584 (2013.01) 20 Claims
 
1. A wax dispersant composition for subterranean applications, comprising:
a carrier medium, and
the following compounds:
A) a nonionic alcohol ethoxylate,
B) an alkylbenzene sulfonate, and
C) a bifunctional quaternary ammonium chloride salt of Formula (IV)

OG Complex Work Unit Chemistry
wherein A is a branched or unbranched C1 to C4 alkyl residue,
X is OY or NHY, and
Y is H, C1-C3 alkyl residue, C(═O)C(CH3)═CH2, C(═O)CH═CH2, C(═O)CH(CH3)CH3, or C(═O)CH2CH3,
wherein a weight ratio of a total amount of compound A) and compound B) to an amount of compound C) is from 7:1 to 25:1.