发明授权
US3998743A Method and solvent composition for stimulating the production of oil
from a producing well
失效
用于刺激来自生产井的油的生产的方法和溶剂组合物
- 专利标题： Method and solvent composition for stimulating the production of oil from a producing well
- 专利标题（中）： 用于刺激来自生产井的油的生产的方法和溶剂组合物
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申请号： US422657申请日： 1973-12-07
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公开(公告)号： US3998743A公开(公告)日： 1976-12-21
- 发明人: George P. Maly , John A. Landess, deceased , Thomas Foral
- 申请人： George P. Maly , John A. Landess, deceased , Thomas Foral
- 申请人地址： CA Brea
- 专利权人： Union Oil Company of California
- 当前专利权人： Union Oil Company of California
- 当前专利权人地址： CA Brea
- 主分类号： C09K8/524
- IPC分类号： C09K8/524 ; E21B43/25 ; C23G5/02
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.