大庆油田N区三元复合驱油试验的研究与评价

讨论了大庆油田在N区进行国产表面活性剂植物油羧酸盐三元复合驱矿场试验。大庆油田三元复合驱采用进口磺酸盐类表面活性剂,其成本较高,为了降低成本,提高经济效益,大庆油田首次在N 区应用植物油表面活性剂。试验采用PBH-808E羧酸盐作为表面活性剂,通过室内岩心驱油实验及实际矿场实验,对三元复合驱试验结果进行分析。结果表明,三元复合驱可在水驱基础上提高原油采收率20%以上;原油乳化是影响驱油效果的重要因素;通过跟踪调整体系黏度,提高试验效果。试验结果对大庆油田三元复合驱技术的发展起到积极作用。

Study and Evaluation of ASP Flooding in Daqing Oilfield

The field experiment of Alkali Surfactant Polymer flooding utilizing domestic plant oil carboxylate surfactant firstly on the N block in Daqing oilfield is investigated. Imported sulphonate surfactant used as ASP flooding in Daqing oilfield utilizing is more costly. To reduce cost and increase economic efficiency, plant oil surfactant was firstly employed on the N block in Daqing oilfield. In this experiment, PBH 808E carboxylate was used as surface active agent. The test results of asp flooding through indoor core displacement experiment and field experiment were analyzed. It presented that the oil recovery of ASP flooding was more than 20 percent compared with water flooding. Oil emulsification was important to effect oil recovery efficiency. Tracking and adjusting system viscosity can get better trial result. Study and evaluation in this test have a positive effect on the research of ASP flooding in Daqing oilfield.