| 摘要 |
<p>A method of reducing, preferably preventing, precipitation of asphalt from c rude oil. In one aspect crude oil is contacted in the borehole with at least one N,N-dialkylamide of a fatty acid having 8 to 22 c arbon atoms. In a second aspect, precipitation is reduce d during miscible flooding in an EOR process by adding to the flooding solvent at lea st one N,N-dialkylamide of a fatty acid having 8 to 22 c arbon atoms.</p> |
