【摘要】 针对渤海 SZ36-1油田油藏条件及其稠油的性质,通过稠油乳化降粘试验和填砂管驱油试验,确定了复合表面活性剂驱最佳配方为:0.6%十二烷基苯磺酸钠表面活性剂与0.3%助剂 BD-1,该配方与地层水有较好的配伍性。对该复合表面活性剂进行了稠油乳化降粘试验,当水加量为50%时,稠油粘度由2.004 Pa·s 降至0.038 Pa·s,总降粘率高达98.1%。物模驱油试验表明,该复合表面活性剂使采收率在水驱基础上提高19.88%。更多还原

【Abstract】 An optimal compound surfactant flooding composion for the oil reservoir conditions and heavy oil properties of Bohai SZ36-1 oilfield was determined in laboratory by the experiments of reducing viscosity by emulsification and flooding oil in sand-packed tube.Its formula was SDBS 0.6% and additive BD-1 0.3%.The surfactant flooding showed good compatibility with stratum water.The viscosity of the heavy oil was reduced 98.1% (from 2.004Pa·s to 0.038Pa·s) in emulsification reducing viscosity test with the com- pound surfactant when water addition was 50%.The physical model flooding test showed that recovery of heavy oil was raised 19.88% on the basis of water flooding by using the compound surfactant.更多还原