公开(公告)号：US3998743A

公开(公告)日：1976-12-21

申请号：US422657

申请日：1973-12-07

申请人： George P. Maly ,  John A. Landess, deceased ,  Thomas Foral

发明人： George P. Maly ,  John A. Landess, deceased ,  Thomas Foral

IPC分类号： C09K8/524 ,  E21B43/25 ,  C23G5/02

CPC分类号： C09K8/524 ,  Y10S507/929 ,  Y10S507/93 ,  Y10S507/931

摘要： A method and solvent composition for removing viscous crude oil, waxes, asphaltenes and resin precipitates of petroleum origin from oil wells, flow lines and pore spaces of oil-bearing formations. The solvent composition is a mixture of about 45 to about 85 volume percent of a normally liquid aliphatic hydrocarbon boiling in the range of about 120.degree. F. to about 550.degree. F., between about 5 to 45 volume percent of a normally liquid aromatic hydrocarbon, between about 0.5 to about 6 volume percent of an ether of an aliphatic polyhydric alcohol, and between about 1 to about 15 volume percent of a lower alkyl monohydric alcohol.

摘要翻译： 一种用于从石油井，含油层的流线和孔隙中除去石油来源的粘性原油，蜡，沥青质和树脂沉淀物的方法和溶剂组合物。 溶剂组合物是约45至约85体积％的在约120°F至约550°F范围内沸腾的通常为液体的脂族烃的混合物，约5-45体积％的常规液体芳烃 ，约0.5至约6体积％的脂族多元醇醚和约1至约15体积％的低级烷基一元醇。