温8区块复合深部调驱体系的制备与评价

针对温米油田温8区块油藏地质条件，采用水驱流向改变剂／弱凝胶复合深部调驱技术。选用粒径为3～5mm水驱流向改变剂2^#用于复合调驱体系；并研制了适合该油藏条件的弱凝胶体系，确定了其最佳配方：聚合物HPAM浓度1000～1500mg／L，交联剂FO浓度300mg／L，交联剂GR20mg／L，稳定剂WD浓度100mg／L，除氧剂CY浓度100mg／L。通过岩心流动实验，评价水驱流向改变剂／弱凝胶复合深部调驱体系对吸水剖面的改善能力。结果表明，该复合调驱体系可大幅提高吸水剖面改善率，适用于温8区块的调驱作业。

Laboratory Study on Compound Deep Profile Modification and Oil Displacement System for Wen 8 Block

Aiming at the geological condition of Wen 8 block reservoir, using water flooding fluid diversion agent/ weak gel compound deep profile modification technology was determined. The 43 - 5 mm water flooding fluid diversion agent 2 # was selected for the deep profile modification system and the approprite weak gel system was developed.The optimum formula of the weak gel system was determined as follows：polymer HPAM 1 000 - 1 500mg/L, crosslinking agent FQ 300 mg/L, crosslinking agent GR 20 mg/L, stabilizer WD 100 mg/L, deoxidizer CY 100 mg/L. The modifying effects of the water flooding fluid diversion agent/weak gel compound deep profile modification system on water injection profile were evaluated in laboratory by core flow experiment. The results showed that the system obviously increased water injection profile improvement rate and was suitable for deep profile control and oil displacement in Wen 8 Block.