US 11,939,681 B1
Plant composite corrosion inhibitor for oil field and preparation method thereof
San He, Chengdu (CN); YongLi Zou, Chengdu (CN); XinYue Cai, Chengdu (CN); YueYing Zhao, Chengdu (CN); MengYu Xie, Chengdu (CN); AnLin Yao, Chengdu (CN); and ZongMing Yuan, Chengdu (CN)
Assigned to Southwest Petroleum University, Chengdu (CN)
Filed by Southwest Petroleum University, Chengdu (CN)
Filed on Sep. 18, 2023, as Appl. No. 18/469,487.
Claims priority of application No. 202310839059.9 (CN), filed on Jul. 10, 2023.
Int. Cl. C23F 11/00 (2006.01); C23F 11/10 (2006.01); C23F 11/12 (2006.01)
CPC C23F 11/122 (2013.01) [C23F 11/00 (2013.01); C23F 11/10 (2013.01); C23F 11/12 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A plant composite corrosion inhibitor for an oil field, comprising the following in parts by mass: 15 parts to 25 parts of first plant ingredient extraction product, 9 parts to 18 parts of second plant ingredient extraction product, 6 parts to 9 parts of corrosion inhibition synergist, and 30 parts to 50 parts of organic solvent;
wherein the raw material of the first plant ingredient extraction product is marigold, and the raw materials of the second plant ingredient are luffa leaves, guava leaves and eclipta.