关键词:  凝胶, 酚醛树脂, 二乙烯三胺, 调剖 

Abstract:  With the water flooding reservoir in medium or high water cut stage, profile adjustment and water plugging measurement is crucial. The conventional profile adjustment system is limited by not sufficient temperature and salinity tolerance, poor stability and short valid period. A new type of diethylenetriamine phenol formaldehyde resin gel profile control system developed is introduced herein. The system’ s performance is excellent, suitable for temperature range 60-120 ℃ , sodium 250000 mg /L, calcium 5000 mg /L and pH > 5 environment. After 120 days in constant temperature box, gel viscosity retention rate is above 98% at 70℃ , and gel viscosity retention rate is more than 94. 7% in 90 - 120℃ environment. The field tests prove the new resin gel has improved the daily oil rate by 2. 0 t, 1200 in total. Compared with the conventional phenol formaldehyde resin gel profile control system, the new one has better applicability and more economic value.

Key words:  , phenol formaldehyde resin, diethylenetriamine, profile adjustment