Details

Autor(en) / Beteiligte

• Zhang, Lin
• Zhang, Changqing
• Yao, Zhigang
• Shen, Jie
• Han, Changwu
• Zhao, Xiaoliang
• Pan, Yi

Titel

Copolymer Grafted Nano Silica Particles for Enhanced Oil Recovery from Low-Permeability Reservoirs

Ist Teil von

• Chemistry and technology of fuels and oils, 2024-03, Vol.60 (1), p.59-68

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2024

Quelle

SpringerLink

Beschreibungen/Notizen

• Because of their small particle size, excellent stability, high temperature tolerance, and salt tolerance, polymer nanoparticles are attracting a lot of attention in low-permeability reservoirs. In this study, SiO2, acrylamide (AM), and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) were used to synthesize novel copolymer-grafted nano-silica particles (HPGN). HPGN’s overall performance in low-permeability reservoirs was evaluated. The results demonstrate that the viscosity of a 2000 mg/L HPGN solution at 50 °C is 75.8 mPa·s, with high stability under high temperature, high salt, and shear conditions. More notably, the displacement experiment proved that under the condition of 18450 mg/L, a 2000 mg/L HPGN solution enhanced the recovery rate by 21.89%. This research indicates that HPGN has great applicability potential in low-permeability reservoirs with high temperatures and salinities.