摘要
采用膜过滤分离试验,研究了不同絮凝剂配比、温度和压力条件下某油田油水中间层滤液变化规律。结果表明,絮凝剂A用量在3%～6%范围内对油水中间层过滤速率的影响比用量在6%～8%范围的大3～4.5倍,确定A剂用量为6%;B剂用量在25～100mg/L范围内,对过滤速率影响较小。提高温度可大大降低物料粘度,有利于提高过滤效率,且不同温度下油水中间层滤液量随时间变化特征符合高斯模型。提高过滤压力可提高过滤效率,每增加0.1MPa压力,在30min内可以增加5.5～12.5ml的滤液量。采用试验所得絮凝剂配比、温度和压力开展综合试验,可以实现94%的油回收率。
A film filtration and separation experiment was used to investigate the filtrate variation law of oil and water interlayer of certain oilfield under the condition of different flocculant proportion,temperature and pressure. The experiment results show that the influence to the interlayer filtration at dosage of 3%~6% of flocculant A solution is 3~4.5 times higher than that at the dosage of 6%~8%,the dosage of 6% of flocculant A is selected for the experiment,the dosage of flocculant B is 25~100 mg/L with low influence on the filtration rate.Temperature increase could decrease material viscosity greatly,which is beneficial for increasing filtration efficiency,and its variation as different temperatures is consistent with Gauss model. Increasing filtration pressure could improve filtration efficiency,when filtration pressure increased by 0.1 MPa,the filtrate could increase 5.5~12.5 ml within 30 minutes. Based on the optimum flocculant proportion,temperature and pressure from the above comprehensive experiments,oil recovery could be more than 94%.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2010年第2期144-147,共4页
Journal of Oil and Gas Technology
基金
国家高技术研究发展计划项目(2008AA06Z344)
关键词
油水分离
油田油水中间层
过滤分离
絮凝剂
温度
压力
oil and water interlayer
filtration and separation
flocculant
temperature
pressure
