Novel CO{sub 2}-thickeners for improved mobility control

Enick, Robert M. ; Beckman, Eric J. ; Hamilton, Andrew

National Petroleum Technology Program (U.S.)

关键词: Oil Wells;    02 Petroleum;    Styrene;    Fluorinated Aliphatic Hydrocarbons;    Displacement Fluids;   

DOI  :  10.2172/750877
RP-ID  :  DOE/BC/15108-5
RP-ID  :  AC26-98BC15108
RP-ID  :  750877

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objective of this study was to design, synthesize, and characterize thickening agents for dense carbon dioxide and to evaluate their solubility and viscosity-enhancing potential in CO{sub 2}. Hydrocarbon-fluorocarbon random copolymers, sulfated hydrocarbon-fluorocarbon random copolymers, semifluorinated trialkyltin fluorides and small hydrogen-bonding compounds were evaluated. Random copolymers of styrene and heptadecafluorodecyl acrylate were characterized by high solubility ion dense carbon dioxide and the most substantial increases in solution viscosity. Falling cylinder viscometry results indicated that the 29%styrene--71%fluoroacylate bulk-polymerized copolymer induced 2--250 fold increases in viscosity at copolymer concentrations of 0.2--5.0wt%.