油藏各向异性对鱼骨状分支井产能影响分析

为了研究油藏各向异性对鱼骨状分支井产能的影响，基于空间变换理论将各向异性渗透率空间转换为各向同性渗透率空间，并应用鱼骨状分支井渗流模型进行产能预测。结果表明：油藏各向异性会导致鱼骨状分支井等压线分布发生明显偏转，各向异性程度越大，偏转越明显；水平面内垂直于主井筒方向的渗透率对鱼骨状分支井产能起决定作用，水平面内平行于主井筒方向的渗透率起次要作用；当水平面内渗透率各向异性较为明确时，应选择主井筒方向与最大渗透率方向垂直；当水平面内渗透率各向异性不明确时，选择的分支角度越大，越能消除水平面内渗透率各向异性不确定性带来的影响。

STUDY ON APPLICATION OF IONIC LIQUIDS AS CATALYST IN DESULFURIZATION OF FCC GASOLINE

Reducing sulfur content in FCC gasoline by using the complex of Brnsted acidic ionic liquid [BMIM]HSO4 and sulfuric acid as alkylation catalyst is introduced.The main factors for desulfurization rate of FCC gasoline such as reaction temperature，reaction time，acidity of complex catalyst，catalyst content and the amount of isoprene are studied.The results show that the desulfurization rate can be increased as the acidity of complex catalyst increases，and it may be increased obviously by adding a small amount of isoprene.Under the catalysis of 5% complex catalyst，the sulfur content of Shijiazhuang FCC gasoline can be reduced from 608mg/L to less than 105mg/L，and the content of Dagang FCC gasoline can be reduced from 122mg/L to 32mg/L by adding some isoprene at 30℃ when the reaction time is 120min，and the octan number of FCC gasoline is little changed.