摘要
对微乳液洗提油砂油的方法进行了室内探索研究.实验油砂为辽河油田地表油砂,用微乳液多次洗提法测得含油量在15.7%～19.1%,平均17.3%.以煤油为油相,以含3.76%(质量分数,下同)十二烷基苯磺酸钠(DDBS)、正丁醇、氯化钠的水溶液为水相,在25℃按油水体积比1∶1混合,当醇加量(1.94%～2.50%)和盐度(1.34%～2.50%NaCl)分别增大时,形成的微乳液相态由Winsor Ⅰ型(上相)变为Winsor Ⅲ型(中相)再变为Winsor Ⅱ型(下相),当醇加量为2.4%时,在1.54%～2.20%宽盐度范围形成Winsor Ⅲ型微乳液,在25℃、固液比5∶25(g∶mL)条件下其洗油效率(以平均含油量为基准)在75.6%～88.9%之间变动,盐度为1.94%时相体积分数最大(0.65),洗油效率最高(88.9%).图1表2参7.
The way of bitumen （oil） recovery from oil sand by microemulsion washing is preliminarily investigated in laboratory. The surface oil sand samples are taken from Liaohe oil fields and their bitumen content is in range 15.7-19.0% with average value 17.3% as measured by multiple microemulsion washing. When the oil phase （kerosene） and the aqueous phase,3.76% solution of dodecyl benzene sulfonate （DDBS） containing butanol and NaCl, are mixed together in equal volume ratio at 25℃, the microemulsion formed changes from phase Winsor Ⅰ to Winsor Ⅲ to Winsor Ⅱ with increasing of butanol amount （1.94-2.50%） or salt （1.34 %-2.50 % ） added; microemulsion of phase Winsor Ⅲ is formed in a wide salinity range of 1.54-2.20 % at butanol dosage 2.4% and at 25℃ in ratio of oil sand to microemulsion 5 g：25 mL gives bitumen washing out efficiency, η, calculated on the basis of average bitumen content, changing in range 75.6-88.9%; the largest volume fraction of phase Winsor Ⅲ, 0.65, and the highest η value, 88.9%, are observed at salinity= 1.94%.
出处
《油田化学》
CAS
CSCD
北大核心
2005年第4期378-380,共3页
Oilfield Chemistry
