公开(公告)号：EP0012759B1

公开(公告)日：1982-05-05

申请号：EP79900314.0

申请日：1979-03-02

申请人： STEPAN CHEMICAL COMPANY

发明人： NUSSBAUM, Marvin, L. ,  KNAGGS, Edward, A.

IPC分类号： C07C143/02 ,  C07C143/16 ,  C07C143/24 ,  C09K7/00

CPC分类号： C07C309/62 ,  C09K8/584

摘要： Petroleum sulfonates yielding improved results in enhanced oil recover processes are comprised of a reaction product obtained from a mixture of a major proportion of a petroleum oil feed stock, such as a crude or a portion thereof, and a minor proportion of an additive, such as an oxygenated hydrocarbon, i.e., an oxo-alcohol or the like, reacted with SO3 under sulfonation conditions, mixed with about 0.50 to 20% (by reaction mixture weight) of water at the temperature in the range of about 50 to 150 C. for a relatively brief period of time and then neutralizing the resultant material with a base, such as NaOH. The neutralized petroleum sulfonated material thus obtained, which may or may not be extracted to remove unsulfonated organic material or salts, is then formulated into a slug for injection into an oil field for enhanced oil recovery.