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- Title
高温油藏耐盐聚合物P(AM/MAPS)驱油剂的制备与性能评价.
- Authors
宁长元; 张亮; 潘若生; 康万利; 李哲; 杨红斌; 周博博; 蒋海壮
- Abstract
With the application of polymer flooding, partially hydrolyzed polyacrylamide (HPAM) has the problems of easy hydrolysis and low viscosity in high-temperature and high-salinity (HTHS) reservoir. To meet the requirement of harsh reservoir, a salt-resistant monomer 3-(N-allyl-N-methylamino) propane-1-sulfonate sodium (MAPS) was synthesized using allyl chloride and sodium N-methyl taurate as main materials, and MAPS and acrylamide (AM) were further copolymerized to form a novel salt-resistant polymer P (AM/MAPS). The product was characterized by infrared spectroscopy and nuclear magnetic hydrogen spectroscopy. The effects of concentration, temperature, salinity and shear rate on the viscosity of P (AM/MAPS) were studied by rheometer. The results showed that the viscosity of P (AM/MAPS) solution with mass concentration of 2000 mg/L reached 14.20mPa·s under the conditions of the temperature of 85 ℃ and salinity of 3×104 mg/L. In one-dimensional displacement experiment with permeability of 527.73×10-3μm²s and pack tube, P (AM/MAPS) could enhanced oil recovery by 13.42% on the basis of water flooding, and the total recovery rate of the double-pipe parallel core with permeability of 882.79 × 10-3, 422.53×10-3μm² could enhanced by 9.27%. The salt-resistant polymer P (AM/MAPS) could be efficiently used in polymer flooding technology for HTHS reservoir to enhanced oil recovery.
- Subjects
NUCLEAR spectroscopy; ENHANCED oil recovery; ALLYL chloride; INFRARED spectroscopy; PETROLEUM reservoirs; POLYMERS; ACRYLAMIDE
- Publication
Oilfield Chemistry, 2023, Vol 40, Issue 3, p460
- ISSN
1000-4092
- Publication type
Article
- DOI
10.19346/j.cnki.1000-4092.2023.03.013