US 11,667,851 B1
Nanoformulations and functionalized polymers for iron removal from crude oil
Leonardo Franca, Katy, TX (US); Tran M. Nguyen, Houston, TX (US); Brandon Vittur, Sugar Land, TX (US); Joseph Aresndorf, Conroe, TX (US); Radhika Suresh, Sugar Land, TX (US); Chad Pyle, Sugar Land, TX (US); and Rostyslav Dolog, Houston, TX (US)
Assigned to Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed by Baker Hughes Oilfield Operations LLC, Houston, TX (US)
Filed on Apr. 28, 2022, as Appl. No. 17/731,544.
Int. Cl. C10G 31/08 (2006.01); C10G 33/02 (2006.01); C10G 33/04 (2006.01)
CPC C10G 31/08 (2013.01) [C10G 33/02 (2013.01); C10G 33/04 (2013.01); C10G 2300/1033 (2013.01); C10G 2300/205 (2013.01); C10G 2300/80 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for removing metal from crude oil comprising:
adding to crude oil, a wash water, or an emulsion created by the mixing of crude oil with wash water, an effective amount of an additive composition to transfer a metal contaminant from a hydrocarbon phase to an aqueous phase, the additive composition comprising an active additive selected from the group consisting of nanoparticles, functionalized polymers, and combinations thereof
where the nanoparticles are selected from the group consisting of graphene oxide, titanium dioxide, zinc oxide, aluminum nitride, aluminum oxide, functionalized clays, deformable polymer latex, magnesium oxide, barium sulfate, polydimethylsiloxane, functionalized silica, ammonia-functionalized graphene oxide, TiO2-functionalized graphene, and combinations thereof, and
where the functionalized silica is functionalized with a functional group selected from the group consisting of sulfonate, sulfate, sulfosuccinate, thiosulfate, succinate, carboxylate, hydroxyl, glucoside, ethoxylate, propoxylate, phosphate, phosphonate, ethoxylate, ether, amines, amides and combinations thereof, and
where the functionalized polymers are selected from the group consisting of iodododecane-functionalized vinylpyrrolidone/vinylimidazole copolymers, sulfonated-functionalized vinylpyrrolidone/vinylimidazole copolymers, sulfonated polyether ether ketones, imidazole polymers, imidazole copolymers, 3-(1-pyridino)-1-propanesulfonate, sulfonated vinylimidazole/vinyl pyrrolidone copolymer, sulfonated vinylimidazole polymer, poly(ethylene glycol) diamine, octadecylphosphonic acid, polydimethoxysiloxane, deformable polymer latex, and combinations thereof; and
resolving the emulsion into the hydrocarbon phase and the aqueous phase in a refinery desalting process using electrostatic coalescence, where at least a portion of the metal contaminant is transferred to the aqueous phase.