TY - JOUR
T1 - High-molar mass acrylamide-co-diacetoneacrylamide graft copolymers as viscosity enhancer for polymer flooding oil recovery
AU - Tamsilian, Yousef
AU - Agirre, Amaia
AU - Fernandez, Mercedes
AU - Sheng, James J.
AU - Tomovska, Radmila
N1 - Funding Information:
The authors gratefully acknowledge the financial support by Spanish Government (CTQ2016-80886-R) and Basque Government (GV IT999-16). It would be also appreciated the instruments and faculty member's grant supports by Shahid Chamran University of Ahvaz, Grant No. SCU.EC98.33983, Contract No. 98/3/05/14909.
Funding Information:
The authors gratefully acknowledge the financial support by Spanish Government ( CTQ2016-80886-R ) and Basque Government ( GV IT999-16 ). It would be also appreciated the instruments and faculty member's grant supports by Shahid Chamran University of Ahvaz , Grant No. SCU.EC98.33983 , Contract No. 98/3/05/14909 . Appendix A
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/2
Y1 - 2020/2
N2 - One of the most widely applied enhanced oil recovery processes is the polymer flooding, in which aqueous solution of polymer viscosifier is introduced in oil reservoirs to increase the recuperation of the remaining oil. From the current challenges of this process, it can be referred to a high cost of materials regarding their substantially required amount and the low impact on the mobility ratio during the process due to the reduction of solution viscosity at high temperatures and high salinity environments. The purpose of this study is to investigate the concept of acrylamide-based thermosassociating copolymer (TAP), with a specific morphology and chemistry (hydrophilic main backbone made of polyacrylamide with grafted amide functionalized pending chains) as viscosity enhancer at harsh conditions of high temperature and salinity. For that aim, a specific TAP microstructure was targeted (very high molar mass linear polymer chains with improved copolymer homogeneity). It is achieved in this study throughout applying the reaction engineering approach, such as synthesis in semi-batch mode or/and in heterogeneous dispersed media. As a result, the synthesized TAP presented excellent behavior as viscosity enhancer especially under high temperature and salinity conditions with improved performance in comparison to TAP synthesized by a conventional solution polymerization approach and to actual commercial high molar mass acrylamide-based polymer.
AB - One of the most widely applied enhanced oil recovery processes is the polymer flooding, in which aqueous solution of polymer viscosifier is introduced in oil reservoirs to increase the recuperation of the remaining oil. From the current challenges of this process, it can be referred to a high cost of materials regarding their substantially required amount and the low impact on the mobility ratio during the process due to the reduction of solution viscosity at high temperatures and high salinity environments. The purpose of this study is to investigate the concept of acrylamide-based thermosassociating copolymer (TAP), with a specific morphology and chemistry (hydrophilic main backbone made of polyacrylamide with grafted amide functionalized pending chains) as viscosity enhancer at harsh conditions of high temperature and salinity. For that aim, a specific TAP microstructure was targeted (very high molar mass linear polymer chains with improved copolymer homogeneity). It is achieved in this study throughout applying the reaction engineering approach, such as synthesis in semi-batch mode or/and in heterogeneous dispersed media. As a result, the synthesized TAP presented excellent behavior as viscosity enhancer especially under high temperature and salinity conditions with improved performance in comparison to TAP synthesized by a conventional solution polymerization approach and to actual commercial high molar mass acrylamide-based polymer.
KW - High temperature and high salinity oil reservoirs
KW - Inverse-miniemulsion polymerization
KW - Rheological properties
KW - Semi-batch process
KW - Thermoassociating copolymer
UR - http://www.scopus.com/inward/record.url?scp=85077505235&partnerID=8YFLogxK
U2 - 10.1016/j.polymertesting.2020.106332
DO - 10.1016/j.polymertesting.2020.106332
M3 - Article
AN - SCOPUS:85077505235
VL - 82
JO - Polymer Testing
JF - Polymer Testing
SN - 0142-9418
M1 - 106332
ER -