Inverse emulsion free‐radical polymerization of acrylamide terpolymer for enhanced oil recovery application in harsh reservoir conditions

• DOI: 10.1002/pen.24499
• Publication Date: 2017-01-19T22:23:21Z
• Authors: L. García‐Uriostegui; G. Pineda‐Torres; S. López‐Ramírez; J. Barragán‐Aroche; C. Durán‐Valencia
• Keywords: Thermogravimetric analysis; Emulsion polymerization

A free‐radical inverse emulsion polymerization formulation has been developed for preparation of acrylamide (AAm)/sodium 2‐acrylamido‐2‐methylpropanesulfonate (AMPSNa)/ N ‐vinylpyrrolidone (VP) terpolymers. An aqueous solution a blend monomers is emulsified in n ‐decane using Tween 85 (Tw85). Ammonium persulfate (APS) and dicumyl peroxide (DCP) were used as initiators water oil phases, respectively. The reactions catalyzed by temperature redox pair; the former achieved at 60°C latter adding tetramethylethylenediamine (TEMED) sodium bisulphite (BisNa) to activate initiator phase, type, stability, conversion, rate analyzed. obtained terpolymer was characterized elemental analysis, infrared spectroscopy (FTIR), 13 C nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), rheology. Thermal initiated with DCP showed best performance viscosity control agent polymeric precursor situ forming, mobility flow diversification, Both application enhanced recovery purposes harsh reservoir conditions are presented. POLYM. ENG. SCI., 57:1214–1223, 2017. © 2017 Society Plastics Engineers