| 摘要 |
<p>The method of recovering petroleum from a subterranean reservoir a polyepoxide condensate of at least one of: (a) a polyalkylene oxide adduct of a fusible, water-insoluble organic aromatic hydrocarbon solvent-soluble synthetic resin, wherein said resin has from between about 4 to about 15 phenolic groups and is an alkyl or cycloaliphatic substituted phenol-aldehyde condensate and (b) a polyether polyol including polyether amino polyols, said polyepoxide condensate at about 25 DEG C.: (i) being less than about 1% by volume soluble in water and in isooctane; (ii) having a solubility parameter in the range of between about 6.9 and about 8.5; and (iii) spreading at the interface between distilled water and refined mineral oil to form a film having a thickness no greater than about 20 Angstroms at a film pressure of about 16 dynes per cm.</p> |
