西南石油大学学报(自然科学版) ›› 2012, Vol. 34 ›› Issue (4): 147-152.

• 油气化学工程与化工 • Previous Articles     Next Articles

Synthesis and Characterization of Temperature-tolerant and Salt-resistantPolymer Hydrogel

Cui Sihua1，2, Zhang Suian1, Guan Baoshan2   

  1. 1. College of Petroleum Engineering，China Univefsity of Petroleum，Changping，Beijing 102249，China2. Research Institute of Petroleum Exploration and Development-Langfang，CNPC，Langfang，Hebei 065007，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-08-01 Published:2012-08-01

PDF (PC)

746

Abstract: A polymer hydrogel is studied which is available for high temperature and high salinity condition，the
SSS/AMPS/bentonite polymer hydrogel is prepared in the lab. The properties of the hydrogel are evaluated using the change
of water absorbency in salt solutions of different concentration，different temperatures and different time and the carrier fluid
is optimized. By single core flow experiment，the shutoff capacity and erode resistant of the block agent are studied. The
results show：the water absorbency and strength keep constant under 80130 ℃ for 60 days；the water absorbency can reach
12.00 gg􀀀1 in the salt solution of 30%；the polymer hydrogel has well property of temperature-tolerant and salt-resistant. The
hydrogel is not swollen in the oil containing 40% water inside within 3 hours. The shutoff efficiency of high permeable formation
and medium permeable formation are 99.96% and 96.41% respectively；the efficiency can still reach 95.12% and 94.43%
after 30PV eroding.

Key words: absorbent polymer hydrogel, temperature-tolerant, carrier fluid, water shutoff, polymer block agent

CLC Number: